Merge pull request #125 from MarginaliaSearch/live-search

Add near real-time crawling from RSS feeds to supplement the slower batch based crawls

code/common/config/java/nu/marginalia/nodecfg/NodeConfigurationService.java

@@ -3,6 +3,7 @@ package nu.marginalia.nodecfg;
 import com.google.inject.Inject;
 import com.zaxxer.hikari.HikariDataSource;
 import nu.marginalia.nodecfg.model.NodeConfiguration;
+import nu.marginalia.nodecfg.model.NodeProfile;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -20,10 +21,10 @@ public class NodeConfigurationService {
         this.dataSource = dataSource;
     }
 
-    public NodeConfiguration create(int id, String description, boolean acceptQueries, boolean keepWarcs) throws SQLException {
+    public NodeConfiguration create(int id, String description, boolean acceptQueries, boolean keepWarcs, NodeProfile nodeProfile) throws SQLException {
         try (var conn = dataSource.getConnection();
              var is = conn.prepareStatement("""
-                     INSERT IGNORE INTO NODE_CONFIGURATION(ID, DESCRIPTION, ACCEPT_QUERIES, KEEP_WARCS) VALUES(?, ?, ?, ?)
+                     INSERT IGNORE INTO NODE_CONFIGURATION(ID, DESCRIPTION, ACCEPT_QUERIES, KEEP_WARCS, NODE_PROFILE) VALUES(?, ?, ?, ?, ?)
                      """)
         )
         {
@@ -31,6 +32,7 @@ public class NodeConfigurationService {
             is.setString(2, description);
             is.setBoolean(3, acceptQueries);
             is.setBoolean(4, keepWarcs);
+            is.setString(5, nodeProfile.name());
 
             if (is.executeUpdate() <= 0) {
                 throw new IllegalStateException("Failed to insert configuration");
@@ -43,7 +45,7 @@ public class NodeConfigurationService {
     public List<NodeConfiguration> getAll() {
         try (var conn = dataSource.getConnection();
              var qs = conn.prepareStatement("""
-                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, KEEP_WARCS, DISABLED
+                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, KEEP_WARCS, NODE_PROFILE, DISABLED
                      FROM NODE_CONFIGURATION
                      """)) {
             var rs = qs.executeQuery();
@@ -58,6 +60,7 @@ public class NodeConfigurationService {
                         rs.getBoolean("AUTO_CLEAN"),
                         rs.getBoolean("PRECESSION"),
                         rs.getBoolean("KEEP_WARCS"),
+                        NodeProfile.valueOf(rs.getString("NODE_PROFILE")),
                         rs.getBoolean("DISABLED")
                 ));
             }
@@ -72,7 +75,7 @@ public class NodeConfigurationService {
     public NodeConfiguration get(int nodeId) throws SQLException {
         try (var conn = dataSource.getConnection();
              var qs = conn.prepareStatement("""
-                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, KEEP_WARCS, DISABLED
+                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, KEEP_WARCS, NODE_PROFILE, DISABLED
                      FROM NODE_CONFIGURATION
                      WHERE ID=?
                      """)) {
@@ -86,6 +89,7 @@ public class NodeConfigurationService {
                         rs.getBoolean("AUTO_CLEAN"),
                         rs.getBoolean("PRECESSION"),
                         rs.getBoolean("KEEP_WARCS"),
+                        NodeProfile.valueOf(rs.getString("NODE_PROFILE")),
                         rs.getBoolean("DISABLED")
                 );
             }
@@ -98,7 +102,7 @@ public class NodeConfigurationService {
         try (var conn = dataSource.getConnection();
              var us = conn.prepareStatement("""
                      UPDATE NODE_CONFIGURATION
-                     SET DESCRIPTION=?, ACCEPT_QUERIES=?,  AUTO_CLEAN=?, PRECESSION=?, KEEP_WARCS=?, DISABLED=?
+                     SET DESCRIPTION=?, ACCEPT_QUERIES=?,  AUTO_CLEAN=?, PRECESSION=?, KEEP_WARCS=?, DISABLED=?, NODE_PROFILE=?
                      WHERE ID=?
                      """))
         {
@@ -108,7 +112,8 @@ public class NodeConfigurationService {
             us.setBoolean(4, config.includeInPrecession());
             us.setBoolean(5, config.keepWarcs());
             us.setBoolean(6, config.disabled());
-            us.setInt(7, config.node());
+            us.setString(7, config.profile().name());
+            us.setInt(8, config.node());
 
             if (us.executeUpdate() <= 0)
                 throw new IllegalStateException("Failed to update configuration");

code/common/config/java/nu/marginalia/nodecfg/model/NodeConfiguration.java

@@ -6,6 +6,7 @@ public record NodeConfiguration(int node,
                                 boolean autoClean,
                                 boolean includeInPrecession,
                                 boolean keepWarcs,
+                                NodeProfile profile,
                                 boolean disabled
                                 )
 {

code/common/config/java/nu/marginalia/nodecfg/model/NodeProfile.java

@@ -0,0 +1,28 @@
+package nu.marginalia.nodecfg.model;
+
+public enum NodeProfile {
+    BATCH_CRAWL,
+    REALTIME,
+    MIXED,
+    SIDELOAD;
+
+    public boolean isBatchCrawl() {
+        return this == BATCH_CRAWL;
+    }
+    public boolean isRealtime() {
+        return this == REALTIME;
+    }
+    public boolean isMixed() {
+        return this == MIXED;
+    }
+    public boolean isSideload() {
+        return this == SIDELOAD;
+    }
+
+    public boolean permitBatchCrawl() {
+        return isBatchCrawl() ||isMixed();
+    }
+    public boolean permitSideload() {
+        return isMixed() || isSideload();
+    }
+}

code/common/config/test/nu/marginalia/nodecfg/NodeConfigurationServiceTest.java

@@ -2,6 +2,7 @@ package nu.marginalia.nodecfg;
 
 import com.zaxxer.hikari.HikariConfig;
 import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.nodecfg.model.NodeProfile;
 import nu.marginalia.test.TestMigrationLoader;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Tag;
@@ -46,8 +47,8 @@ public class NodeConfigurationServiceTest {
 
     @Test
     public void test() throws SQLException {
-        var a = nodeConfigurationService.create(1, "Test", false, false);
+        var a = nodeConfigurationService.create(1, "Test", false, false, NodeProfile.MIXED);
-        var b = nodeConfigurationService.create(2, "Foo", true, false);
+        var b = nodeConfigurationService.create(2, "Foo", true, false, NodeProfile.MIXED);
 
         assertEquals(1, a.node());
         assertEquals("Test", a.description());

code/common/db/resources/db/migration/V24_11_0_001__add_node_profile.sql

@@ -0,0 +1 @@
+ALTER TABLE WMSA_prod.NODE_CONFIGURATION ADD COLUMN NODE_PROFILE VARCHAR(255) DEFAULT 'MIXED';

code/common/process/build.gradle

@@ -1,34 +0,0 @@
-plugins {
-    id 'java'
-
-    id 'jvm-test-suite'
-}
-
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
-    }
-}
-
-apply from: "$rootProject.projectDir/srcsets.gradle"
-
-dependencies {
-    implementation libs.notnull
-
-    implementation libs.bundles.slf4j
-    testImplementation libs.bundles.slf4j.test
-
-    implementation libs.guava
-    implementation libs.guava
-    implementation dependencies.create(libs.guice.get()) {
-        exclude group: 'com.google.guava'
-    }
-    implementation libs.bundles.mariadb
-    implementation libs.commons.lang3
-
-    implementation libs.snakeyaml
-
-    testImplementation libs.bundles.slf4j.test
-    testImplementation libs.bundles.junit
-    testImplementation libs.mockito
-}

code/common/process/java/nu/marginalia/process/control/ProcessAdHocTaskHeartbeat.java

@@ -1,7 +0,0 @@
-package nu.marginalia.process.control;
-
-public interface ProcessAdHocTaskHeartbeat extends AutoCloseable {
-    void progress(String step, int progress, int total);
-
-    void close();
-}

code/common/process/readme.md

@@ -1,4 +0,0 @@
-# Process
-
-Basic functionality for a Process. Processes must include this dependency to ensure
-their loggers are configured properly!

code/common/process/resources/log4j2.properties

@@ -1,9 +0,0 @@
-log4j2.isThreadContextMapInheritable=true
-status = info
-appender.console.type = Console
-appender.console.name = LogToConsole
-appender.console.layout.type = PatternLayout
-appender.console.layout.pattern = %highlight{%-5level}{FATAL=red, ERROR=red, WARN=yellow} %c{1}- %msg{nolookups}%n
-appender.console.filter.http.type = MarkerFilter
-rootLogger.level = info
-rootLogger.appenderRef.console.ref = LogToConsole

code/common/service/java/nu/marginalia/process/ProcessConfiguration.java

@@ -1,4 +1,4 @@
-package nu.marginalia;
+package nu.marginalia.process;
 
 import java.util.UUID;
 

code/common/service/java/nu/marginalia/process/ProcessConfigurationModule.java

@@ -1,4 +1,4 @@
-package nu.marginalia;
+package nu.marginalia.process;
 
 import com.google.inject.AbstractModule;
 import com.google.inject.name.Names;

code/common/service/java/nu/marginalia/process/ProcessMainClass.java

@@ -0,0 +1,102 @@
+package nu.marginalia.process;
+
+import com.google.gson.Gson;
+import nu.marginalia.mq.MessageQueueFactory;
+import nu.marginalia.mq.MqMessage;
+import nu.marginalia.mq.inbox.MqInboxResponse;
+import nu.marginalia.mq.inbox.MqSingleShotInbox;
+import nu.marginalia.service.ConfigLoader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.SQLException;
+import java.util.Optional;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+public abstract class ProcessMainClass {
+    private static final Logger logger = LoggerFactory.getLogger(ProcessMainClass.class);
+
+    private final MessageQueueFactory messageQueueFactory;
+    private final int node;
+    private final String inboxName;
+
+    static {
+        // Load global config ASAP
+        ConfigLoader.loadConfig(
+                ConfigLoader.getConfigPath("system")
+        );
+    }
+
+    private final Gson gson;
+
+    public ProcessMainClass(MessageQueueFactory messageQueueFactory,
+                            ProcessConfiguration config,
+                            Gson gson,
+                            String inboxName
+                            ) {
+        this.gson = gson;
+        new org.mariadb.jdbc.Driver();
+        this.messageQueueFactory = messageQueueFactory;
+        this.node = config.node();
+        this.inboxName = inboxName;
+    }
+
+
+    protected <T> Instructions<T> fetchInstructions(Class<T> requestType) throws Exception {
+
+        var inbox = messageQueueFactory.createSingleShotInbox(inboxName, node, UUID.randomUUID());
+
+        logger.info("Waiting for instructions");
+
+        var msgOpt = getMessage(inbox, requestType.getSimpleName());
+        var msg = msgOpt.orElseThrow(() -> new RuntimeException("No message received"));
+
+        // for live crawl, request is empty for now
+        T request = gson.fromJson(msg.payload(), requestType);
+
+        return new Instructions<>(msg, inbox, request);
+    }
+
+
+    private Optional<MqMessage> getMessage(MqSingleShotInbox inbox, String expectedFunction) throws InterruptedException, SQLException {
+        var opt = inbox.waitForMessage(30, TimeUnit.SECONDS);
+        if (opt.isPresent()) {
+            if (!opt.get().function().equals(expectedFunction)) {
+                throw new RuntimeException("Unexpected function: " + opt.get().function());
+            }
+            return opt;
+        }
+        else {
+            var stolenMessage = inbox.stealMessage(msg -> msg.function().equals(expectedFunction));
+            stolenMessage.ifPresent(mqMessage -> logger.info("Stole message {}", mqMessage));
+            return stolenMessage;
+        }
+    }
+
+
+    protected static class Instructions<T> {
+        private final MqMessage message;
+        private final MqSingleShotInbox inbox;
+        private final T value;
+        Instructions(MqMessage message, MqSingleShotInbox inbox, T value)
+        {
+            this.message = message;
+            this.inbox = inbox;
+            this.value = value;
+        }
+
+        public T value() {
+            return value;
+        }
+
+        public void ok() {
+            inbox.sendResponse(message, MqInboxResponse.ok());
+        }
+        public void err() {
+            inbox.sendResponse(message, MqInboxResponse.err());
+        }
+
+    }
+
+}

code/common/service/java/nu/marginalia/process/control/FakeProcessHeartbeat.java

@@ -3,6 +3,8 @@ package nu.marginalia.process.control;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.Collection;
+
 /** Dummy implementation of ProcessHeartbeat that does nothing */
 public class FakeProcessHeartbeat implements ProcessHeartbeat {
     private static final Logger logger = LoggerFactory.getLogger(FakeProcessHeartbeat.class);
@@ -30,6 +32,11 @@ public class FakeProcessHeartbeat implements ProcessHeartbeat {
                 logger.info("Progress: {}, {}/{}", step, progress, total);
             }
 
+            @Override
+            public <T> Iterable<T> wrap(String step, Collection<T> collection) {
+                return collection;
+            }
+
             @Override
             public void close() {}
         };

code/common/service/java/nu/marginalia/process/control/ProcessAdHocTaskHeartbeat.java

@@ -0,0 +1,12 @@
+package nu.marginalia.process.control;
+
+import java.util.Collection;
+
+public interface ProcessAdHocTaskHeartbeat extends AutoCloseable {
+    void progress(String step, int progress, int total);
+
+    /** Wrap a collection to provide heartbeat progress updates as it's iterated through */
+    <T> Iterable<T> wrap(String step, Collection<T> collection);
+
+    void close();
+}

code/common/service/java/nu/marginalia/process/control/ProcessAdHocTaskHeartbeatImpl.java

@@ -2,11 +2,13 @@ package nu.marginalia.process.control;
 
 
 import com.zaxxer.hikari.HikariDataSource;
-import nu.marginalia.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.sql.SQLException;
+import java.util.Collection;
+import java.util.Iterator;
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 
@@ -69,6 +71,35 @@ public class ProcessAdHocTaskHeartbeatImpl implements AutoCloseable, ProcessAdHo
         logger.info("ProcessTask {} progress: {}%", taskBase, progress);
     }
 
+    /** Wrap a collection to provide heartbeat progress updates as it's iterated through */
+    @Override
+    public <T> Iterable<T> wrap(String step, Collection<T> collection) {
+        return () -> new Iterator<>() {
+            private final Iterator<T> base = collection.iterator();
+            private final int size = collection.size();
+            private final int updateInterval = Math.max(1, size / 100); // update every 1% of the collection, or at least once
+            private int pos = 0;
+
+            @Override
+            public boolean hasNext() {
+                boolean ret = base.hasNext();
+                if (!ret) {
+                    progress(step, size, size);
+                }
+                return ret;
+            }
+
+            @Override
+            public T next() {
+                // update every 1% of the collection, to avoid hammering the database with updates
+                if (pos++ % updateInterval == 0) {
+                    progress(step, pos, size);
+                }
+                return base.next();
+            }
+        };
+    }
+
     public void shutDown() {
         if (!running)
             return;
@@ -185,6 +216,5 @@ public class ProcessAdHocTaskHeartbeatImpl implements AutoCloseable, ProcessAdHo
     public void close() {
         shutDown();
     }
-
 }
 

code/common/service/java/nu/marginalia/process/control/ProcessHeartbeatImpl.java

@@ -4,17 +4,18 @@ package nu.marginalia.process.control;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import com.zaxxer.hikari.HikariDataSource;
-import nu.marginalia.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.Closeable;
 import java.sql.SQLException;
 import java.util.concurrent.TimeUnit;
 
 /** This service sends a heartbeat to the database every 5 seconds.
  */
 @Singleton
-public class ProcessHeartbeatImpl implements ProcessHeartbeat {
+public class ProcessHeartbeatImpl implements ProcessHeartbeat, Closeable {
     private final Logger logger = LoggerFactory.getLogger(ProcessHeartbeatImpl.class);
     private final String processName;
     private final String processBase;
@@ -169,5 +170,9 @@ public class ProcessHeartbeatImpl implements ProcessHeartbeat {
             }
         }
     }
+
+    public void close() {
+        shutDown();
+    }
 }
 

code/common/service/java/nu/marginalia/process/control/ProcessTaskHeartbeatImpl.java

@@ -2,7 +2,7 @@ package nu.marginalia.process.control;
 
 
 import com.zaxxer.hikari.HikariDataSource;
-import nu.marginalia.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

code/common/service/java/nu/marginalia/service/ConfigLoader.java

@@ -9,11 +9,11 @@ import java.util.Properties;
 
 public class ConfigLoader {
 
-    static Path getConfigPath(String configName) {
+    public static Path getConfigPath(String configName) {
         return WmsaHome.getHomePath().resolve("conf/properties/" + configName + ".properties");
     }
 
-    static void loadConfig(Path configPath) {
+    public static void loadConfig(Path configPath) {
         if (!Files.exists(configPath)) {
             System.err.println("No config file found at " + configPath);
             return;

code/common/service/java/nu/marginalia/service/ProcessMainClass.java

@@ -1,20 +0,0 @@
-package nu.marginalia.service;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public abstract class ProcessMainClass {
-    private static final Logger logger = LoggerFactory.getLogger(ProcessMainClass.class);
-
-    static {
-        // Load global config ASAP
-        ConfigLoader.loadConfig(
-                ConfigLoader.getConfigPath("system")
-        );
-    }
-
-    public ProcessMainClass() {
-        new org.mariadb.jdbc.Driver();
-    }
-
-}

code/common/service/java/nu/marginalia/service/ServiceId.java

@@ -13,7 +13,10 @@ public enum ServiceId {
 
     Dating("dating-service"),
     Status("setatus-service"),
-    Explorer("explorer-service");
+    Explorer("explorer-service"),
+
+    NOT_A_SERVICE("NOT_A_SERVICE")
+    ;
 
     public final String serviceName;
 

code/common/service/java/nu/marginalia/service/server/NodeStatusWatcher.java

@@ -4,6 +4,7 @@ import com.google.inject.Inject;
 import com.google.inject.name.Named;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.nodecfg.NodeConfigurationService;
+import nu.marginalia.nodecfg.model.NodeProfile;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageBaseType;
 import org.slf4j.Logger;
@@ -56,7 +57,9 @@ public class NodeStatusWatcher {
 
     private void setupNode() {
         try {
-            configurationService.create(nodeId, "Node " + nodeId, true, false);
+            NodeProfile profile = NodeProfile.MIXED;
+
+            configurationService.create(nodeId, "Node " + nodeId, true, false, profile);
 
             fileStorageService.createStorageBase("Index Data", Path.of("/idx"), nodeId, FileStorageBaseType.CURRENT);
             fileStorageService.createStorageBase("Index Backups", Path.of("/backup"), nodeId, FileStorageBaseType.BACKUP);

code/execution/api/java/nu/marginalia/executor/client/ExecutorClient.java

@@ -182,4 +182,10 @@ public class ExecutorClient {
         }
     }
 
+    public void restartExecutorService(int node) {
+        channelPool.call(ExecutorApiBlockingStub::restartExecutorService)
+                .forNode(node)
+                .run(Empty.getDefaultInstance());
+    }
+
 }

code/execution/api/src/main/protobuf/executor-api.proto

@@ -17,6 +17,8 @@ service ExecutorApi {
   rpc downloadSampleData(RpcDownloadSampleData) returns (Empty) {}
   rpc calculateAdjacencies(Empty) returns (Empty) {}
   rpc restoreBackup(RpcFileStorageId) returns (Empty) {}
+
+  rpc restartExecutorService(Empty) returns (Empty) {}
 }
 
 service ExecutorCrawlApi {

code/execution/build.gradle

@@ -15,15 +15,15 @@ dependencies {
     // These look weird but they're needed to be able to spawn the processes
     // from the executor service
 
-    implementation project(':code:processes:website-adjacencies-calculator')
+    implementation project(':code:processes:export-task-process')
     implementation project(':code:processes:crawling-process')
+    implementation project(':code:processes:live-crawling-process')
     implementation project(':code:processes:loading-process')
     implementation project(':code:processes:converting-process')
     implementation project(':code:processes:index-constructor-process')
 
     implementation project(':code:common:config')
     implementation project(':code:common:model')
-    implementation project(':code:common:process')
     implementation project(':code:common:db')
     implementation project(':code:common:linkdb')
 
@@ -42,7 +42,6 @@ dependencies {
     implementation project(':code:processes:crawling-process:model')
     implementation project(':code:processes:crawling-process:model')
     implementation project(':code:processes:crawling-process:ft-link-parser')
-    implementation project(':code:execution:data-extractors')
     implementation project(':code:index:index-journal')
     implementation project(':code:index:api')
     implementation project(':code:processes:process-mq-api')

code/execution/data-extractors/readme.md

@@ -1,7 +0,0 @@
-Contains converter-*like* extraction jobs that operate on crawled data to produce export files.
-
-## Important classes
-
-* [AtagExporter](java/nu/marginalia/extractor/AtagExporter.java) - extracts anchor texts from the crawled data.
-* [FeedExporter](java/nu/marginalia/extractor/FeedExporter.java) - tries to find RSS/Atom feeds within the crawled data.
-* [TermFrequencyExporter](java/nu/marginalia/extractor/TermFrequencyExporter.java) - exports the 'TF' part of TF-IDF.

code/execution/java/nu/marginalia/actor/ExecutorActor.java

@@ -1,29 +1,38 @@
 package nu.marginalia.actor;
 
+import nu.marginalia.nodecfg.model.NodeProfile;
+
+import java.util.Set;
+
 public enum ExecutorActor {
-    CRAWL,
+    CRAWL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    RECRAWL,
+    RECRAWL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    RECRAWL_SINGLE_DOMAIN,
+    RECRAWL_SINGLE_DOMAIN(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    CONVERT_AND_LOAD,
+    PROC_CONVERTER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    PROC_CONVERTER_SPAWNER,
+    PROC_CRAWLER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    PROC_LOADER_SPAWNER,
+    PROC_EXPORT_TASKS_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    PROC_CRAWLER_SPAWNER,
+    ADJACENCY_CALCULATION(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    MONITOR_PROCESS_LIVENESS,
+    EXPORT_DATA(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    MONITOR_FILE_STORAGE,
+    EXPORT_SEGMENTATION_MODEL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    ADJACENCY_CALCULATION,
+    EXPORT_ATAGS(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    CRAWL_JOB_EXTRACTOR,
+    EXPORT_TERM_FREQUENCIES(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    EXPORT_DATA,
+    EXPORT_FEEDS(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    EXPORT_SEGMENTATION_MODEL,
+    EXPORT_SAMPLE_DATA(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    EXPORT_ATAGS,
+    DOWNLOAD_SAMPLE(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    EXPORT_TERM_FREQUENCIES,
+
-    EXPORT_FEEDS,
+    PROC_LOADER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD),
-    PROC_INDEX_CONSTRUCTOR_SPAWNER,
+    RESTORE_BACKUP(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD),
-    CONVERT,
+    CONVERT(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD),
-    RESTORE_BACKUP,
+
-    EXPORT_SAMPLE_DATA,
+    CONVERT_AND_LOAD(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.REALTIME, NodeProfile.SIDELOAD),
-    DOWNLOAD_SAMPLE,
+    MONITOR_PROCESS_LIVENESS(NodeProfile.BATCH_CRAWL, NodeProfile.REALTIME, NodeProfile.MIXED, NodeProfile.SIDELOAD),
-    SCRAPE_FEEDS,
+    MONITOR_FILE_STORAGE(NodeProfile.BATCH_CRAWL, NodeProfile.REALTIME, NodeProfile.MIXED, NodeProfile.SIDELOAD),
-    UPDATE_RSS;
+    PROC_INDEX_CONSTRUCTOR_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.REALTIME, NodeProfile.MIXED, NodeProfile.SIDELOAD),
+
+    LIVE_CRAWL(NodeProfile.REALTIME),
+    PROC_LIVE_CRAWL_SPAWNER(NodeProfile.REALTIME),
+    SCRAPE_FEEDS(NodeProfile.REALTIME),
+    UPDATE_RSS(NodeProfile.REALTIME);
 
     public String id() {
         return "fsm:" + name().toLowerCase();
@@ -33,4 +42,9 @@ public enum ExecutorActor {
         return "fsm:" + name().toLowerCase() + ":" + node;
     }
 
+    ExecutorActor(NodeProfile... profileSet) {
+        this.profileSet = Set.of(profileSet);
+    }
+
+    public Set<NodeProfile> profileSet;
 }

code/execution/java/nu/marginalia/actor/ExecutorActorControlService.java

@@ -10,11 +10,14 @@ import nu.marginalia.actor.state.ActorStateInstance;
 import nu.marginalia.actor.state.ActorStep;
 import nu.marginalia.actor.task.*;
 import nu.marginalia.mq.MessageQueueFactory;
+import nu.marginalia.nodecfg.NodeConfigurationService;
+import nu.marginalia.nodecfg.model.NodeConfiguration;
 import nu.marginalia.service.control.ServiceEventLog;
 import nu.marginalia.service.server.BaseServiceParams;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.sql.SQLException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
@@ -28,18 +31,23 @@ public class ExecutorActorControlService {
     public Map<ExecutorActor, ActorPrototype> actorDefinitions = new HashMap<>();
     private final int node;
 
+    private final NodeConfiguration nodeConfiguration;
+
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
     @Inject
     public ExecutorActorControlService(MessageQueueFactory messageQueueFactory,
+                                       NodeConfigurationService configurationService,
                                        BaseServiceParams baseServiceParams,
                                        ConvertActor convertActor,
                                        ConvertAndLoadActor convertAndLoadActor,
                                        CrawlActor crawlActor,
+                                       LiveCrawlActor liveCrawlActor,
                                        RecrawlSingleDomainActor recrawlSingleDomainActor,
                                        RestoreBackupActor restoreBackupActor,
                                        ConverterMonitorActor converterMonitorFSM,
                                        CrawlerMonitorActor crawlerMonitorActor,
+                                       LiveCrawlerMonitorActor liveCrawlerMonitorActor,
                                        LoaderMonitorActor loaderMonitor,
                                        ProcessLivenessMonitorActor processMonitorFSM,
                                        FileStorageMonitorActor fileStorageMonitorActor,
@@ -51,16 +59,20 @@ public class ExecutorActorControlService {
                                        ExportSampleDataActor exportSampleDataActor,
                                        ExportTermFreqActor exportTermFrequenciesActor,
                                        ExportSegmentationModelActor exportSegmentationModelActor,
+                                       ExportTaskMonitorActor exportTasksMonitorActor,
                                        DownloadSampleActor downloadSampleActor,
                                        ScrapeFeedsActor scrapeFeedsActor,
                                        ExecutorActorStateMachines stateMachines,
-                                       UpdateRssActor updateRssActor) {
+                                       UpdateRssActor updateRssActor) throws SQLException {
         this.messageQueueFactory = messageQueueFactory;
         this.eventLog = baseServiceParams.eventLog;
         this.stateMachines = stateMachines;
         this.node = baseServiceParams.configuration.node();
 
+        this.nodeConfiguration = configurationService.get(node);
+
         register(ExecutorActor.CRAWL, crawlActor);
+        register(ExecutorActor.LIVE_CRAWL, liveCrawlActor);
         register(ExecutorActor.RECRAWL_SINGLE_DOMAIN, recrawlSingleDomainActor);
 
         register(ExecutorActor.CONVERT, convertActor);
@@ -71,6 +83,8 @@ public class ExecutorActorControlService {
         register(ExecutorActor.PROC_CONVERTER_SPAWNER, converterMonitorFSM);
         register(ExecutorActor.PROC_LOADER_SPAWNER, loaderMonitor);
         register(ExecutorActor.PROC_CRAWLER_SPAWNER, crawlerMonitorActor);
+        register(ExecutorActor.PROC_LIVE_CRAWL_SPAWNER, liveCrawlerMonitorActor);
+        register(ExecutorActor.PROC_EXPORT_TASKS_SPAWNER, exportTasksMonitorActor);
 
         register(ExecutorActor.MONITOR_PROCESS_LIVENESS, processMonitorFSM);
         register(ExecutorActor.MONITOR_FILE_STORAGE, fileStorageMonitorActor);
@@ -91,6 +105,11 @@ public class ExecutorActorControlService {
     }
 
     private void register(ExecutorActor process, RecordActorPrototype graph) {
+
+        if (!process.profileSet.contains(nodeConfiguration.profile())) {
+            return;
+        }
+
         var sm = new ActorStateMachine(messageQueueFactory, process.id(), node, UUID.randomUUID(), graph);
         sm.listen((function, param) -> logStateChange(process, function));
 

code/execution/java/nu/marginalia/actor/proc/ExportTaskMonitorActor.java

@@ -0,0 +1,29 @@
+package nu.marginalia.actor.proc;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
+import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessService;
+import nu.marginalia.service.module.ServiceConfiguration;
+
+@Singleton
+public class ExportTaskMonitorActor extends AbstractProcessSpawnerActor {
+
+    @Inject
+    public ExportTaskMonitorActor(Gson gson,
+                                  ServiceConfiguration configuration,
+                                  MqPersistence persistence,
+                                  ProcessService processService) {
+        super(gson,
+                configuration,
+                persistence,
+                processService,
+                ProcessInboxNames.EXPORT_TASK_INBOX,
+                ProcessService.ProcessId.EXPORT_TASKS);
+    }
+
+
+}

code/execution/java/nu/marginalia/actor/proc/LiveCrawlerMonitorActor.java

@@ -0,0 +1,29 @@
+package nu.marginalia.actor.proc;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
+import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessService;
+import nu.marginalia.service.module.ServiceConfiguration;
+
+@Singleton
+public class LiveCrawlerMonitorActor extends AbstractProcessSpawnerActor {
+
+    @Inject
+    public LiveCrawlerMonitorActor(Gson gson,
+                                   ServiceConfiguration configuration,
+                                   MqPersistence persistence,
+                                   ProcessService processService) {
+        super(gson,
+                configuration,
+                persistence,
+                processService,
+                ProcessInboxNames.LIVE_CRAWLER_INBOX,
+                ProcessService.ProcessId.LIVE_CRAWLER);
+    }
+
+
+}

code/execution/java/nu/marginalia/actor/proc/ScrapeFeedsActor.java

@@ -10,6 +10,8 @@ import nu.marginalia.actor.state.ActorResumeBehavior;
 import nu.marginalia.actor.state.ActorStep;
 import nu.marginalia.actor.state.Resume;
 import nu.marginalia.model.EdgeDomain;
+import nu.marginalia.nodecfg.NodeConfigurationService;
+import nu.marginalia.nodecfg.model.NodeProfile;
 import nu.marginalia.service.control.ServiceEventLog;
 import nu.marginalia.service.module.ServiceConfiguration;
 import org.jsoup.Jsoup;
@@ -39,6 +41,7 @@ public class ScrapeFeedsActor extends RecordActorPrototype {
     private final Duration pollInterval = Duration.ofHours(6);
 
     private final ServiceEventLog eventLog;
+    private final NodeConfigurationService nodeConfigurationService;
     private final HikariDataSource dataSource;
     private final int nodeId;
 
@@ -54,8 +57,8 @@ public class ScrapeFeedsActor extends RecordActorPrototype {
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
             case Initial() -> {
-                if (nodeId > 1) {
+                if (nodeConfigurationService.get(nodeId).profile() != NodeProfile.REALTIME) {
-                    yield new End();
+                    yield new Error("Invalid node profile for RSS update");
                 }
                 else {
                     yield new Wait(LocalDateTime.now().toString());
@@ -177,10 +180,12 @@ public class ScrapeFeedsActor extends RecordActorPrototype {
     public ScrapeFeedsActor(Gson gson,
                             ServiceEventLog eventLog,
                             ServiceConfiguration configuration,
+                            NodeConfigurationService nodeConfigurationService,
                             HikariDataSource dataSource)
     {
         super(gson);
         this.eventLog = eventLog;
+        this.nodeConfigurationService = nodeConfigurationService;
         this.dataSource = dataSource;
         this.nodeId = configuration.node();
     }

code/execution/java/nu/marginalia/actor/proc/UpdateRssActor.java

@@ -11,6 +11,8 @@ import nu.marginalia.api.feeds.RpcFeedUpdateMode;
 import nu.marginalia.mq.MqMessage;
 import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.nodecfg.NodeConfigurationService;
+import nu.marginalia.nodecfg.model.NodeProfile;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 import java.time.Duration;
@@ -25,13 +27,19 @@ public class UpdateRssActor extends RecordActorPrototype {
     private final Duration updateInterval = Duration.ofHours(24);
     private final int cleanInterval = 60;
 
+    private final NodeConfigurationService nodeConfigurationService;
     private final MqPersistence persistence;
 
     @Inject
-    public UpdateRssActor(Gson gson, FeedsClient feedsClient, ServiceConfiguration serviceConfiguration, MqPersistence persistence) {
+    public UpdateRssActor(Gson gson,
+                          FeedsClient feedsClient,
+                          ServiceConfiguration serviceConfiguration,
+                          NodeConfigurationService nodeConfigurationService,
+                          MqPersistence persistence) {
         super(gson);
         this.feedsClient = feedsClient;
         this.nodeId = serviceConfiguration.node();
+        this.nodeConfigurationService = nodeConfigurationService;
         this.persistence = persistence;
     }
 
@@ -55,9 +63,8 @@ public class UpdateRssActor extends RecordActorPrototype {
     public ActorStep transition(ActorStep self) throws Exception {
         return switch (self) {
             case Initial() -> {
-                if (nodeId > 1) {
+                if (nodeConfigurationService.get(nodeId).profile() != NodeProfile.REALTIME) {
-                    // Only run on the first node
+                    yield new Error("Invalid node profile for RSS update");
-                    yield new End();
                 }
                 else {
                     // Wait for 5 minutes before starting the first update, to give the system time to start up properly

code/execution/java/nu/marginalia/actor/task/ExportAtagsActor.java

@@ -3,50 +3,68 @@ package nu.marginalia.actor.task;
 import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
-import nu.marginalia.extractor.AtagExporter;
-import nu.marginalia.extractor.ExporterIf;
-import nu.marginalia.storage.model.*;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqapi.tasks.ExportTaskRequest;
+import nu.marginalia.process.ProcessOutboxes;
+import nu.marginalia.process.ProcessService;
 import nu.marginalia.storage.FileStorageService;
+import nu.marginalia.storage.model.FileStorageId;
+import nu.marginalia.storage.model.FileStorageState;
+import nu.marginalia.storage.model.FileStorageType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.time.LocalDateTime;
 
 @Singleton
 public class ExportAtagsActor extends RecordActorPrototype {
     private final FileStorageService storageService;
-    private final ExporterIf atagExporter;
+    private final ActorProcessWatcher processWatcher;
+    private final MqOutbox exportTasksOutbox;
+    private final Logger logger = LoggerFactory.getLogger(getClass());
 
     public record Export(FileStorageId crawlId) implements ActorStep {}
-    public record Run(FileStorageId crawlId, FileStorageId destId) implements ActorStep {}
+    public record Run(FileStorageId crawlId, FileStorageId destId, long msgId) implements ActorStep {
+        public Run(FileStorageId crawlId, FileStorageId destId) {
+            this(crawlId, destId, -1);
+        }
+    }
+
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
             case Export(FileStorageId crawlId) -> {
-                var storage = storageService.allocateStorage(FileStorageType.EXPORT, "atag-export", "Anchor Tags " + LocalDateTime.now());
+                var storage = storageService.allocateStorage(FileStorageType.EXPORT, "atags-export", "Atags " + LocalDateTime.now());
 
                 if (storage == null) yield new Error("Bad storage id");
                 yield new Run(crawlId, storage.id());
             }
-            case Run(FileStorageId crawlId, FileStorageId destId) -> {
+            case Run(FileStorageId crawlId, FileStorageId destId, long msgId) when msgId < 0 -> {
                 storageService.setFileStorageState(destId, FileStorageState.NEW);
 
-                try {
+                long newMsgId = exportTasksOutbox.sendAsync(ExportTaskRequest.atags(crawlId, destId));
-                    atagExporter.export(crawlId, destId);
+                yield new Run(crawlId, destId, newMsgId);
-                    storageService.setFileStorageState(destId, FileStorageState.UNSET);
-                }
-                catch (Exception ex) {
-                    storageService.setFileStorageState(destId, FileStorageState.DELETE);
-                    yield new Error("Failed to export data");
             }
+            case Run(_, FileStorageId destId, long msgId) -> {
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
 
+                if (rsp.state() != MqMessageState.OK) {
+                    storageService.flagFileForDeletion(destId);
+                    yield new Error("Exporter failed");
+                }
+                else {
+                    storageService.setFileStorageState(destId, FileStorageState.UNSET);
                     yield new End();
                 }
+            }
+
             default -> new Error();
         };
     }
 
-
     @Override
     public String describe() {
         return "Export anchor tags from crawl data";
@@ -55,11 +73,13 @@ public class ExportAtagsActor extends RecordActorPrototype {
     @Inject
     public ExportAtagsActor(Gson gson,
                             FileStorageService storageService,
-                            AtagExporter atagExporter)
+                            ProcessOutboxes processOutboxes,
+                            ActorProcessWatcher processWatcher)
     {
         super(gson);
+        this.exportTasksOutbox = processOutboxes.getExportTasksOutbox();
         this.storageService = storageService;
-        this.atagExporter = atagExporter;
+        this.processWatcher = processWatcher;
     }
 
 }

code/execution/java/nu/marginalia/actor/task/ExportFeedsActor.java

@@ -5,8 +5,11 @@ import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorStep;
-import nu.marginalia.extractor.ExporterIf;
+import nu.marginalia.mq.MqMessageState;
-import nu.marginalia.extractor.FeedExporter;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqapi.tasks.ExportTaskRequest;
+import nu.marginalia.process.ProcessOutboxes;
+import nu.marginalia.process.ProcessService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
@@ -19,11 +22,17 @@ import java.time.LocalDateTime;
 @Singleton
 public class ExportFeedsActor extends RecordActorPrototype {
     private final FileStorageService storageService;
+    private final ActorProcessWatcher processWatcher;
+    private final MqOutbox exportTasksOutbox;
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
-    private final ExporterIf feedExporter;
     public record Export(FileStorageId crawlId) implements ActorStep {}
-    public record Run(FileStorageId crawlId, FileStorageId destId) implements ActorStep {}
+    public record Run(FileStorageId crawlId, FileStorageId destId, long msgId) implements ActorStep {
+        public Run(FileStorageId crawlId, FileStorageId destId) {
+            this(crawlId, destId, -1);
+        }
+    }
+
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
@@ -33,20 +42,25 @@ public class ExportFeedsActor extends RecordActorPrototype {
                 if (storage == null) yield new Error("Bad storage id");
                 yield new Run(crawlId, storage.id());
             }
-            case Run(FileStorageId crawlId, FileStorageId destId) -> {
+            case Run(FileStorageId crawlId, FileStorageId destId, long msgId) when msgId < 0 -> {
                 storageService.setFileStorageState(destId, FileStorageState.NEW);
 
-                try {
+                long newMsgId = exportTasksOutbox.sendAsync(ExportTaskRequest.feeds(crawlId, destId));
-                    feedExporter.export(crawlId, destId);
+                yield new Run(crawlId, destId, newMsgId);
-                    storageService.setFileStorageState(destId, FileStorageState.UNSET);
-                }
-                catch (Exception ex) {
-                    storageService.setFileStorageState(destId, FileStorageState.DELETE);
-                    yield new Error("Failed to export data");
             }
+            case Run(_, FileStorageId destId, long msgId) -> {
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
 
+                if (rsp.state() != MqMessageState.OK) {
+                    storageService.flagFileForDeletion(destId);
+                    yield new Error("Exporter failed");
+                }
+                else {
+                    storageService.setFileStorageState(destId, FileStorageState.UNSET);
                     yield new End();
                 }
+            }
+
             default -> new Error();
         };
     }
@@ -60,11 +74,13 @@ public class ExportFeedsActor extends RecordActorPrototype {
     @Inject
     public ExportFeedsActor(Gson gson,
                             FileStorageService storageService,
-                            FeedExporter feedExporter)
+                            ActorProcessWatcher processWatcher,
+                            ProcessOutboxes outboxes)
     {
         super(gson);
         this.storageService = storageService;
-        this.feedExporter = feedExporter;
+        this.processWatcher = processWatcher;
+        this.exportTasksOutbox = outboxes.getExportTasksOutbox();
     }
 
 }

code/execution/java/nu/marginalia/actor/task/ExportSampleDataActor.java

@@ -5,7 +5,11 @@ import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorStep;
-import nu.marginalia.extractor.SampleDataExporter;
+import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqapi.tasks.ExportTaskRequest;
+import nu.marginalia.process.ProcessOutboxes;
+import nu.marginalia.process.ProcessService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
@@ -18,11 +22,17 @@ import java.time.LocalDateTime;
 @Singleton
 public class ExportSampleDataActor extends RecordActorPrototype {
     private final FileStorageService storageService;
+    private final ActorProcessWatcher processWatcher;
+    private final MqOutbox exportTasksOutbox;
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
-    private final SampleDataExporter dataExporter;
     public record Export(FileStorageId crawlId, int size, String name) implements ActorStep {}
-    public record Run(FileStorageId crawlId, FileStorageId destId, int size, String name) implements ActorStep {}
+    public record Run(FileStorageId crawlId, FileStorageId destId, int size, String name, long msgId) implements ActorStep {
+        public Run(FileStorageId crawlId, FileStorageId destId, int size, String name) {
+            this(crawlId, destId, size, name, -1);
+        }
+    }
+
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
@@ -35,28 +45,29 @@ public class ExportSampleDataActor extends RecordActorPrototype {
                 if (storage == null) yield new Error("Bad storage id");
                 yield new Run(crawlId, storage.id(), size, name);
             }
-            case Run(FileStorageId crawlId, FileStorageId destId, int size, String name) -> {
+            case Run(FileStorageId crawlId, FileStorageId destId, int size, String name, long msgId) when msgId < 0 -> {
                 storageService.setFileStorageState(destId, FileStorageState.NEW);
 
-                try {
+                long newMsgId = exportTasksOutbox.sendAsync(ExportTaskRequest.sampleData(crawlId, destId, size, name));
-                    dataExporter.export(crawlId, destId, size, name);
+                yield new Run(crawlId, destId, size, name, newMsgId);
+            }
+            case Run(_, FileStorageId destId, _, _, long msgId) -> {
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
+
+                if (rsp.state() != MqMessageState.OK) {
+                    storageService.flagFileForDeletion(destId);
+                    yield new Error("Exporter failed");
+                }
+                else {
                     storageService.setFileStorageState(destId, FileStorageState.UNSET);
-                }
-                catch (Exception ex) {
-                    storageService.setFileStorageState(destId, FileStorageState.DELETE);
-
-                    logger.error("Failed to export data", ex);
-
-                    yield new Error("Failed to export data");
-                }
-
                     yield new End();
                 }
+            }
+
             default -> new Error();
         };
     }
 
-
     @Override
     public String describe() {
         return "Export RSS/Atom feeds from crawl data";
@@ -65,11 +76,13 @@ public class ExportSampleDataActor extends RecordActorPrototype {
     @Inject
     public ExportSampleDataActor(Gson gson,
                                  FileStorageService storageService,
-                                 SampleDataExporter dataExporter)
+                                 ProcessOutboxes processOutboxes,
+                                 ActorProcessWatcher processWatcher)
     {
         super(gson);
         this.storageService = storageService;
-        this.dataExporter = dataExporter;
+        this.processWatcher = processWatcher;
+        this.exportTasksOutbox = processOutboxes.getExportTasksOutbox();
     }
 
 }

code/execution/java/nu/marginalia/actor/task/ExportTermFreqActor.java

@@ -5,45 +5,62 @@ import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorStep;
-import nu.marginalia.extractor.ExporterIf;
+import nu.marginalia.mq.MqMessageState;
-import nu.marginalia.extractor.TermFrequencyExporter;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqapi.tasks.ExportTaskRequest;
+import nu.marginalia.process.ProcessOutboxes;
+import nu.marginalia.process.ProcessService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
 import nu.marginalia.storage.model.FileStorageType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.time.LocalDateTime;
 
 @Singleton
 public class ExportTermFreqActor extends RecordActorPrototype {
     private final FileStorageService storageService;
-    private final ExporterIf exporter;
+    private final ActorProcessWatcher processWatcher;
+    private final MqOutbox exportTasksOutbox;
+    private final Logger logger = LoggerFactory.getLogger(getClass());
+
     public record Export(FileStorageId crawlId) implements ActorStep {}
-    public record Run(FileStorageId crawlId, FileStorageId destId) implements ActorStep {}
+    public record Run(FileStorageId crawlId, FileStorageId destId, long msgId) implements ActorStep {
+        public Run(FileStorageId crawlId, FileStorageId destId) {
+            this(crawlId, destId, -1);
+        }
+    }
 
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
             case Export(FileStorageId crawlId) -> {
-                var storage = storageService.allocateStorage(FileStorageType.EXPORT, "term-freq-export", "Term Frequencies " + LocalDateTime.now());
+                var storage = storageService.allocateStorage(FileStorageType.EXPORT, "term-freq", "Term Frequencies " + LocalDateTime.now());
 
                 if (storage == null) yield new Error("Bad storage id");
                 yield new Run(crawlId, storage.id());
             }
-            case Run(FileStorageId crawlId, FileStorageId destId) -> {
+            case Run(FileStorageId crawlId, FileStorageId destId, long msgId) when msgId < 0 -> {
                 storageService.setFileStorageState(destId, FileStorageState.NEW);
 
-                try {
+                long newMsgId = exportTasksOutbox.sendAsync(ExportTaskRequest.termFreq(crawlId, destId));
-                    exporter.export(crawlId, destId);
+                yield new Run(crawlId, destId, newMsgId);
-                    storageService.setFileStorageState(destId, FileStorageState.UNSET);
-                }
-                catch (Exception ex) {
-                    storageService.setFileStorageState(destId, FileStorageState.DELETE);
-                    yield new Error("Failed to export data");
             }
+            case Run(_, FileStorageId destId, long msgId) -> {
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
 
+                if (rsp.state() != MqMessageState.OK) {
+                    storageService.flagFileForDeletion(destId);
+                    yield new Error("Exporter failed");
+                }
+                else {
+                    storageService.setFileStorageState(destId, FileStorageState.UNSET);
                     yield new End();
                 }
+            }
+
             default -> new Error();
         };
     }
@@ -57,11 +74,13 @@ public class ExportTermFreqActor extends RecordActorPrototype {
     @Inject
     public ExportTermFreqActor(Gson gson,
                                FileStorageService storageService,
-                               TermFrequencyExporter exporter)
+                               ProcessOutboxes processOutboxes,
+                               ActorProcessWatcher processWatcher)
     {
         super(gson);
         this.storageService = storageService;
-        this.exporter = exporter;
+        this.processWatcher = processWatcher;
+        this.exportTasksOutbox = processOutboxes.getExportTasksOutbox();
     }
 
 }

code/execution/java/nu/marginalia/actor/task/LiveCrawlActor.java

@@ -0,0 +1,108 @@
+package nu.marginalia.actor.task;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.IndexLocations;
+import nu.marginalia.actor.ExecutorActor;
+import nu.marginalia.actor.ExecutorActorStateMachines;
+import nu.marginalia.actor.prototype.RecordActorPrototype;
+import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.api.feeds.FeedsClient;
+import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqapi.crawling.LiveCrawlRequest;
+import nu.marginalia.process.ProcessOutboxes;
+import nu.marginalia.process.ProcessService;
+import nu.marginalia.storage.FileStorageService;
+import org.apache.commons.io.FileUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.Duration;
+import java.util.Objects;
+
+@Singleton
+public class LiveCrawlActor extends RecordActorPrototype {
+
+    // STATES
+    private final ActorProcessWatcher processWatcher;
+    private final MqOutbox mqLiveCrawlerOutbox;
+    private final ExecutorActorStateMachines executorActorStateMachines;
+    private final FeedsClient feedsClient;
+    private final Logger logger = LoggerFactory.getLogger(getClass());
+
+    private final FileStorageService fileStorageService;
+
+    public record Initial() implements ActorStep {}
+    public record Monitor(String feedsHash) implements ActorStep {}
+    public record LiveCrawl(String feedsHash, long msgId) implements ActorStep {
+        public LiveCrawl(String feedsHash) { this(feedsHash, -1); }
+    }
+
+    @Override
+    public ActorStep transition(ActorStep self) throws Exception {
+        logger.info("{}", self);
+        return switch (self) {
+            case Initial() -> {
+                yield new Monitor("-");
+            }
+            case Monitor(String feedsHash) -> {
+                for (;;) {
+                    String currentHash = feedsClient.getFeedDataHash();
+                    if (!Objects.equals(currentHash, feedsHash)) {
+                        yield new LiveCrawl(currentHash);
+                    }
+                    Thread.sleep(Duration.ofMinutes(15));
+                }
+            }
+            case LiveCrawl(String feedsHash, long msgId) when msgId < 0 -> {
+                // Clear the index journal before starting the crawl
+                Path indexJournalLocation = IndexLocations.getIndexConstructionArea(fileStorageService).resolve("index-journal");
+                if (Files.isDirectory(indexJournalLocation)) {
+                    FileUtils.deleteDirectory(indexJournalLocation.toFile());
+                }
+
+                long id = mqLiveCrawlerOutbox.sendAsync(new LiveCrawlRequest());
+                yield new LiveCrawl(feedsHash, id);
+            }
+            case LiveCrawl(String feedsHash, long msgId) -> {
+                var rsp = processWatcher.waitResponse(mqLiveCrawlerOutbox, ProcessService.ProcessId.LIVE_CRAWLER, msgId);
+
+                if (rsp.state() != MqMessageState.OK) {
+                    yield new Error("Crawler failed");
+                }
+
+                // Build the index
+                executorActorStateMachines.initFrom(ExecutorActor.CONVERT_AND_LOAD, new ConvertAndLoadActor.Rerank());
+
+                yield new Monitor(feedsHash);
+            }
+            default -> new Error("Unknown state");
+        };
+    }
+
+    @Override
+    public String describe() {
+        return "Actor that polls the feeds database for changes, and triggers the live crawler when needed";
+    }
+
+    @Inject
+    public LiveCrawlActor(ActorProcessWatcher processWatcher,
+                          ProcessOutboxes processOutboxes,
+                          FeedsClient feedsClient,
+                          Gson gson,
+                          ExecutorActorStateMachines executorActorStateMachines, FileStorageService fileStorageService)
+    {
+        super(gson);
+        this.processWatcher = processWatcher;
+        this.mqLiveCrawlerOutbox = processOutboxes.getLiveCrawlerOutbox();
+        this.executorActorStateMachines = executorActorStateMachines;
+        this.feedsClient = feedsClient;
+        this.fileStorageService = fileStorageService;
+    }
+
+
+}

code/execution/java/nu/marginalia/actor/task/TriggerAdjacencyCalculationActor.java

@@ -5,53 +5,59 @@ import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqapi.tasks.ExportTaskRequest;
+import nu.marginalia.process.ProcessOutboxes;
 import nu.marginalia.process.ProcessService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.atomic.AtomicBoolean;
-
 @Singleton
 public class TriggerAdjacencyCalculationActor extends RecordActorPrototype {
 
+    private final ActorProcessWatcher processWatcher;
+    private final MqOutbox exportTasksOutbox;
     private final Logger logger = LoggerFactory.getLogger(getClass());
-    private final ProcessService processService;
-    private final ExecutorService executor = Executors.newSingleThreadExecutor();
 
-    public record Run() implements ActorStep {}
+    public record Run(long msgId) implements ActorStep {
+        public Run() {
+            this(-1);
+        }
+    }
 
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
-        return switch (self) {
+        return switch(self) {
-            case Run() -> {
+            case Run(long msgId) when msgId < 0 -> {
-                AtomicBoolean hasError = new AtomicBoolean(false);
+                long newMsgId = exportTasksOutbox.sendAsync(ExportTaskRequest.adjacencies());
-                var future = executor.submit(() -> {
+                yield new Run(newMsgId);
-                    try {
-                        processService.trigger(ProcessService.ProcessId.ADJACENCIES_CALCULATOR, "load");
             }
-                    catch (Exception ex) {
+            case Run(long msgId) -> {
-                        logger.warn("Error triggering adjacency calculation", ex);
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
-                        hasError.set(true);
-                    }
-                });
-                future.get();
 
-                if (hasError.get()) {
+                if (rsp.state() != MqMessageState.OK) {
-                    yield new Error("Error triggering adjacency calculation");
+                    yield new Error("Exporter failed");
                 }
+                else {
                     yield new End();
                 }
+            }
+
             default -> new Error();
         };
     }
 
+
     @Inject
     public TriggerAdjacencyCalculationActor(Gson gson,
-                                            ProcessService processService) {
+                                            ProcessOutboxes processOutboxes,
+                                            ActorProcessWatcher processWatcher) {
         super(gson);
-        this.processService = processService;
+
+        this.exportTasksOutbox = processOutboxes.getExportTasksOutbox();
+        this.processWatcher = processWatcher;
+
     }
 
     @Override

code/execution/java/nu/marginalia/execution/ExecutorGrpcService.java

@@ -15,9 +15,12 @@ import nu.marginalia.service.module.ServiceConfiguration;
 import nu.marginalia.service.server.DiscoverableService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.time.Duration;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
 import java.time.format.DateTimeFormatter;
@@ -32,6 +35,8 @@ public class ExecutorGrpcService
     private final ServiceConfiguration serviceConfiguration;
     private final ExecutorActorControlService actorControlService;
 
+    private static final Logger logger = LoggerFactory.getLogger(ExecutorGrpcService.class);
+
     @Inject
     public ExecutorGrpcService(ActorApi actorApi,
                                FileStorageService fileStorageService,
@@ -240,5 +245,22 @@ public class ExecutorGrpcService
         }
     }
 
+    @Override
+    public void restartExecutorService(Empty request, StreamObserver<Empty> responseObserver) {
+        responseObserver.onNext(Empty.getDefaultInstance());
+        responseObserver.onCompleted();
+
+        logger.info("Restarting executor service on node {}", serviceConfiguration.node());
+
+        try {
+            // Wait for the response to be sent before restarting
+            Thread.sleep(Duration.ofSeconds(5));
+        }
+        catch (InterruptedException e) {
+            logger.warn("Interrupted while waiting for restart", e);
+        }
+
+        System.exit(0);
+    }
 
 }

code/execution/java/nu/marginalia/process/ProcessOutboxes.java

@@ -13,6 +13,8 @@ public class ProcessOutboxes {
     private final MqOutbox loaderOutbox;
     private final MqOutbox crawlerOutbox;
     private final MqOutbox indexConstructorOutbox;
+    private final MqOutbox liveCrawlerOutbox;
+    private final MqOutbox exportTasksOutbox;
 
     @Inject
     public ProcessOutboxes(BaseServiceParams params, MqPersistence persistence) {
@@ -44,6 +46,22 @@ public class ProcessOutboxes {
                 params.configuration.node(),
                 params.configuration.instanceUuid()
         );
+
+        liveCrawlerOutbox = new MqOutbox(persistence,
+                ProcessInboxNames.LIVE_CRAWLER_INBOX,
+                params.configuration.node(),
+                params.configuration.serviceName(),
+                params.configuration.node(),
+                params.configuration.instanceUuid()
+        );
+
+        exportTasksOutbox = new MqOutbox(persistence,
+                ProcessInboxNames.EXPORT_TASK_INBOX,
+                params.configuration.node(),
+                params.configuration.serviceName(),
+                params.configuration.node(),
+                params.configuration.instanceUuid()
+        );
     }
 
 
@@ -60,4 +78,8 @@ public class ProcessOutboxes {
     }
 
     public MqOutbox getIndexConstructorOutbox() { return indexConstructorOutbox; }
+
+    public MqOutbox getLiveCrawlerOutbox() { return liveCrawlerOutbox; }
+
+    public MqOutbox getExportTasksOutbox() { return exportTasksOutbox; }
 }

code/execution/java/nu/marginalia/process/ProcessService.java

@@ -3,14 +3,14 @@ package nu.marginalia.process;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.WmsaHome;
-import nu.marginalia.adjacencies.WebsiteAdjacenciesCalculator;
 import nu.marginalia.converting.ConverterMain;
 import nu.marginalia.crawl.CrawlerMain;
 import nu.marginalia.index.IndexConstructorMain;
+import nu.marginalia.livecrawler.LiveCrawlerMain;
 import nu.marginalia.loading.LoaderMain;
-import nu.marginalia.service.ProcessMainClass;
 import nu.marginalia.service.control.ServiceEventLog;
 import nu.marginalia.service.server.BaseServiceParams;
+import nu.marginalia.task.ExportTasksMain;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.slf4j.Marker;
@@ -37,23 +37,24 @@ public class ProcessService {
     private final int node;
 
 
-    public static ProcessService.ProcessId translateExternalIdBase(String id) {
+    public static ProcessId translateExternalIdBase(String id) {
         return switch (id) {
-            case "converter" -> ProcessService.ProcessId.CONVERTER;
+            case "converter" -> ProcessId.CONVERTER;
-            case "crawler" -> ProcessService.ProcessId.CRAWLER;
+            case "crawler" -> ProcessId.CRAWLER;
-            case "loader" -> ProcessService.ProcessId.LOADER;
+            case "loader" -> ProcessId.LOADER;
-            case "website-adjacencies-calculator" -> ProcessService.ProcessId.ADJACENCIES_CALCULATOR;
+            case "export-tasks" -> ProcessId.EXPORT_TASKS;
-            case "index-constructor" -> ProcessService.ProcessId.INDEX_CONSTRUCTOR;
+            case "index-constructor" -> ProcessId.INDEX_CONSTRUCTOR;
             default -> null;
         };
     }
 
     public enum ProcessId {
         CRAWLER(CrawlerMain.class),
+        LIVE_CRAWLER(LiveCrawlerMain.class),
         CONVERTER(ConverterMain.class),
         LOADER(LoaderMain.class),
         INDEX_CONSTRUCTOR(IndexConstructorMain.class),
-        ADJACENCIES_CALCULATOR(WebsiteAdjacenciesCalculator.class)
+        EXPORT_TASKS(ExportTasksMain.class),
         ;
 
         public final String mainClass;
@@ -64,10 +65,11 @@ public class ProcessService {
         List<String> envOpts() {
             String variable = switch (this) {
                 case CRAWLER -> "CRAWLER_PROCESS_OPTS";
+                case LIVE_CRAWLER -> "LIVE_CRAWLER_PROCESS_OPTS";
                 case CONVERTER -> "CONVERTER_PROCESS_OPTS";
                 case LOADER -> "LOADER_PROCESS_OPTS";
                 case INDEX_CONSTRUCTOR -> "INDEX_CONSTRUCTION_PROCESS_OPTS";
-                case ADJACENCIES_CALCULATOR -> "ADJACENCIES_CALCULATOR_PROCESS_OPTS";
+                case EXPORT_TASKS -> "EXPORT_TASKS_PROCESS_OPTS";
             };
             String value = System.getenv(variable);
 

code/functions/live-capture/api/java/nu/marginalia/api/feeds/FeedsClient.java

@@ -11,10 +11,15 @@ import nu.marginalia.service.discovery.property.ServicePartition;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 import javax.annotation.CheckReturnValue;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.function.BiConsumer;
 
 @Singleton
 public class FeedsClient {
@@ -23,7 +28,9 @@ public class FeedsClient {
     private final MqOutbox updateFeedsOutbox;
 
     @Inject
-    public FeedsClient(GrpcChannelPoolFactory factory, MqPersistence mqPersistence, ServiceConfiguration serviceConfiguration) {
+    public FeedsClient(GrpcChannelPoolFactory factory,
+                       MqPersistence mqPersistence,
+                       ServiceConfiguration serviceConfiguration) {
 
         // The client is only interested in the primary node
         var key = ServiceKey.forGrpcApi(FeedApiGrpc.class, ServicePartition.any());
@@ -46,6 +53,25 @@ public class FeedsClient {
         }
     }
 
+    public void getUpdatedDomains(Instant since, BiConsumer<String, List<String>> consumer) throws ExecutionException, InterruptedException {
+        channelPool.call(FeedApiGrpc.FeedApiBlockingStub::getUpdatedLinks)
+                .run(RpcUpdatedLinksRequest.newBuilder().setSinceEpochMillis(since.toEpochMilli()).build())
+                .forEachRemaining(rsp -> consumer.accept(rsp.getDomain(), new ArrayList<>(rsp.getUrlList())));
+    }
+
+    public record UpdatedDomain(String domain, List<String> urls) {
+        public UpdatedDomain(RpcUpdatedLinksResponse rsp) {
+            this(rsp.getDomain(), new ArrayList<>(rsp.getUrlList()));
+        }
+    }
+
+    /** Get the hash of the feed data, for identifying when the data has been updated */
+    public String getFeedDataHash() {
+        return channelPool.call(FeedApiGrpc.FeedApiBlockingStub::getFeedDataHash)
+                .run(Empty.getDefaultInstance())
+                .getHash();
+    }
+
     /** Update the feeds, return a message ID for the update */
     @CheckReturnValue
     public long updateFeeds(RpcFeedUpdateMode mode) throws Exception {

code/functions/live-capture/api/src/main/protobuf/feeds.proto

@@ -7,7 +7,22 @@ option java_multiple_files=true;
 
 service FeedApi {
   rpc getFeed(RpcDomainId) returns (RpcFeed) {}
+  rpc getFeedDataHash(Empty) returns (RpcFeedDataHash) {}
   rpc updateFeeds(RpcUpdateRequest) returns (Empty) {}
+  rpc getUpdatedLinks(RpcUpdatedLinksRequest) returns (stream RpcUpdatedLinksResponse) {}
+}
+
+message RpcUpdatedLinksRequest {
+  int64 sinceEpochMillis = 1;
+}
+
+message RpcUpdatedLinksResponse {
+  string domain = 1;
+  repeated string url = 2;
+}
+
+message RpcFeedDataHash {
+  string hash = 1;
 }
 
 message RpcDomainId {

code/functions/live-capture/java/nu/marginalia/rss/db/FeedDb.java

@@ -11,11 +11,16 @@ import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.BufferedInputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
+import java.security.MessageDigest;
+import java.time.Instant;
+import java.util.Base64;
 import java.util.List;
 import java.util.Optional;
+import java.util.function.BiConsumer;
 
 @Singleton
 public class FeedDb {
@@ -45,6 +50,18 @@ public class FeedDb {
         }
     }
 
+    /** Constructor for testing */
+    public FeedDb(Path dbPath) {
+        feedDbEnabled = true;
+        readerDbPath = dbPath;
+
+        try {
+            reader = new FeedDbReader(readerDbPath);
+        } catch (Exception e) {
+            reader = null;
+        }
+    }
+
     public boolean isEnabled() {
         return feedDbEnabled;
     }
@@ -112,7 +129,7 @@ public class FeedDb {
         }
 
         try {
-            Path dbFile = Files.createTempFile(WmsaHome.getDataPath(), "rss-feeds", ".tmp.db");
+            Path dbFile = Files.createTempFile(readerDbPath.getParent(), "rss-feeds", ".tmp.db");
             return new FeedDbWriter(dbFile);
         } catch (Exception e) {
             logger.error("Error creating new database writer", e);
@@ -141,4 +158,34 @@ public class FeedDb {
         }
     }
 
+    public String getDataHash() throws Exception {
+        MessageDigest digest = MessageDigest.getInstance("MD5");
+
+        byte[] buffer = new byte[4096];
+
+        try (var inputStream = new BufferedInputStream(Files.newInputStream(readerDbPath))) {
+            int rb;
+
+            while ((rb = inputStream.read(buffer)) >= 0) {
+                digest.update(buffer, 0, rb);
+            }
+        }
+
+        return Base64.getEncoder().encodeToString(digest.digest());
+    }
+
+    public void getLinksUpdatedSince(Instant since, BiConsumer<String, List<String>> consumer) throws Exception {
+        if (!feedDbEnabled) {
+            throw new IllegalStateException("Feed database is disabled on this node");
+        }
+
+        // Capture the current reader to avoid concurrency issues
+        FeedDbReader reader = this.reader;
+
+        if (reader == null) {
+            throw new NullPointerException("Reader is not available");
+        }
+
+        reader.getLinksUpdatedSince(since, consumer);
+    }
 }

code/functions/live-capture/java/nu/marginalia/rss/db/FeedDbReader.java

@@ -12,9 +12,11 @@ import java.nio.file.Path;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.SQLException;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
+import java.util.function.BiConsumer;
 
 public class FeedDbReader implements AutoCloseable {
     private static final Logger logger = LoggerFactory.getLogger(FeedDbReader.class);
@@ -99,4 +101,27 @@ public class FeedDbReader implements AutoCloseable {
     }
 
 
+    public void getLinksUpdatedSince(Instant since, BiConsumer<String, List<String>> consumer) {
+        try (var stmt = connection.prepareStatement("SELECT FEED FROM feed")) {
+            var rs = stmt.executeQuery();
+
+            while (rs.next()) {
+                FeedItems items = deserialize(rs.getString(1));
+
+                List<String> urls = new ArrayList<>();
+                for (var item : items.items()) {
+                    if (item.getUpdateTimeZD().toInstant().isAfter(since)) {
+                        urls.add(item.url());
+                    }
+                }
+
+                if (!urls.isEmpty()) {
+                    consumer.accept(items.domain(), new ArrayList<>(urls));
+                    urls.clear();
+                }
+            }
+        } catch (SQLException e) {
+            logger.error("Error getting updated links", e);
+        }
+    }
 }

code/functions/live-capture/java/nu/marginalia/rss/model/FeedItem.java

@@ -55,6 +55,11 @@ public record FeedItem(String title,
         return zonedDateTime.map(date -> date.format(DATE_FORMAT)).orElse("");
     }
 
+    public ZonedDateTime getUpdateTimeZD() {
+        return ZonedDateTime.parse(date, DATE_FORMAT);
+    }
+
+
     @Override
     public int compareTo(@NotNull FeedItem o) {
         return o.date.compareTo(date);

code/functions/live-capture/java/nu/marginalia/rss/model/FeedItems.java

@@ -1,7 +1,6 @@
 package nu.marginalia.rss.model;
 
 import java.util.List;
-import java.util.Optional;
 
 public record FeedItems(String domain,
                         String feedUrl,
@@ -17,17 +16,4 @@ public record FeedItems(String domain,
     public boolean isEmpty() {
         return items.isEmpty();
     }
-
-    public Optional<FeedItem> getLatest() {
-        if (items.isEmpty())
-            return Optional.empty();
-
-        return Optional.of(
-                items.getFirst()
-        );
-    }
-
-    public Optional<String> getLatestDate() {
-        return getLatest().map(FeedItem::date);
-    }
 }

code/functions/live-capture/java/nu/marginalia/rss/svc/FeedFetcherService.java

@@ -70,7 +70,7 @@ public class FeedFetcherService {
         this.serviceHeartbeat = serviceHeartbeat;
         this.executorClient = executorClient;
 
-        rssReader.addHeader("User-Agent", WmsaHome.getUserAgent().uaIdentifier() + "  RSS Feed Fetcher");
+        rssReader.addHeader("User-Agent", WmsaHome.getUserAgent().uaIdentifier());
     }
 
     public enum UpdateMode {

code/functions/live-capture/java/nu/marginalia/rss/svc/FeedsGrpcService.java

@@ -14,6 +14,8 @@ import nu.marginalia.service.server.DiscoverableService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.time.Instant;
+import java.util.List;
 import java.util.Optional;
 
 public class FeedsGrpcService extends FeedApiGrpc.FeedApiImplBase implements DiscoverableService  {
@@ -64,6 +66,45 @@ public class FeedsGrpcService extends FeedApiGrpc.FeedApiImplBase implements Dis
         responseObserver.onCompleted();
     }
 
+    @Override
+    public void getFeedDataHash(Empty request, StreamObserver<RpcFeedDataHash> responseObserver) {
+        if (!feedDb.isEnabled()) {
+            responseObserver.onError(new IllegalStateException("Feed database is disabled on this node"));
+            return;
+        }
+
+        try {
+            String hash = feedDb.getDataHash();
+            responseObserver.onNext(RpcFeedDataHash.newBuilder().setHash(hash).build());
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            logger.error("Error getting feed data hash", e);
+            responseObserver.onError(e);
+        }
+    }
+
+    @Override
+    public void getUpdatedLinks(RpcUpdatedLinksRequest request, StreamObserver<RpcUpdatedLinksResponse> responseObserver) {
+        Instant since = Instant.ofEpochMilli(request.getSinceEpochMillis());
+
+        try {
+            feedDb.getLinksUpdatedSince(since, (String domain, List<String> urls) -> {
+                RpcUpdatedLinksResponse rsp = RpcUpdatedLinksResponse.newBuilder()
+                        .setDomain(domain)
+                        .addAllUrl(urls)
+                        .build();
+                responseObserver.onNext(rsp);
+            });
+
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            logger.error("Error getting updated links", e);
+            responseObserver.onError(e);
+        }
+    }
+
     @Override
     public void getFeed(RpcDomainId request,
                         StreamObserver<RpcFeed> responseObserver)

code/functions/live-capture/test/nu/marginalia/rss/db/FeedDbReaderTest.java

@@ -0,0 +1,34 @@
+package nu.marginalia.rss.db;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Path;
+import java.sql.SQLException;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+class FeedDbReaderTest {
+
+    @Tag("flaky") // will only work on ~vlofgren, not on CI; remove test  when this feature is stable
+    @Test
+    void getLinksUpdatedSince() throws SQLException {
+        var reader = new FeedDbReader(Path.of("/home/vlofgren/rss-feeds.db"));
+        Map<String, List<String>> links = new HashMap<>();
+
+        reader.getLinksUpdatedSince(Instant.now().minus(10, ChronoUnit.DAYS), links::put);
+
+        System.out.println(links.size());
+        for (var link : links.values()) {
+            if (link.size() < 2) {
+                System.out.println(link);
+            }
+        }
+
+        reader.close();
+
+    }
+}

code/functions/live-capture/test/nu/marginalia/rss/db/FeedDbTest.java

@@ -0,0 +1,36 @@
+package nu.marginalia.rss.db;
+
+import nu.marginalia.rss.model.FeedItem;
+import nu.marginalia.rss.model.FeedItems;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+
+class FeedDbTest {
+
+    @Test
+    public void testDbHash() throws Exception{
+        Path dbPath = Files.createTempFile("rss-feeds", ".db");
+        try {
+            FeedDb db = new FeedDb(dbPath);
+
+            try (var writer = db.createWriter()) {
+                writer.saveFeed(new FeedItems("foo", "bar", "baz", List.of(
+                        new FeedItem("title1", "link1", "description1", "content1"),
+                        new FeedItem("title2", "link2", "description2", "content2")
+                )));
+
+                db.switchDb(writer);
+            }
+
+            var hash = db.getDataHash();
+            Assertions.assertFalse(hash.isBlank());
+        } finally {
+            Files.delete(dbPath);
+        }
+
+    }
+}

code/index/build.gradle

@@ -67,7 +67,6 @@ dependencies {
     testImplementation libs.bundles.junit
     testImplementation libs.mockito
     testImplementation libs.commons.lang3
-    testImplementation project(':code:common:process')
     testImplementation project(':code:libraries:array')
 
     testImplementation platform('org.testcontainers:testcontainers-bom:1.17.4')

code/index/index-forward/build.gradle

@@ -20,7 +20,7 @@ dependencies {
     implementation project(':code:index:query')
     implementation project(':code:index:index-journal')
     implementation project(':code:common:model')
-    implementation project(':code:common:process')
+    implementation project(':code:common:service')
     implementation project(':code:processes:converting-process:model')
 
     implementation libs.bundles.slf4j

code/index/index-reverse/build.gradle

@@ -21,8 +21,8 @@ dependencies {
     implementation project(':code:index:query')
     implementation project(':code:index:index-journal')
     implementation project(':code:common:model')
+    implementation project(':code:common:service')
     implementation project(':code:processes:converting-process:model')
-    implementation project(':code:common:process')
 
     implementation project(':third-party:parquet-floor')
     implementation project(':third-party:commons-codec')

code/processes/converting-process/build.gradle

@@ -21,7 +21,6 @@ tasks.distZip.enabled = false
 apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
-    implementation project(':code:common:process')
 
     implementation project(':third-party:porterstemmer')
     implementation project(':third-party:count-min-sketch')

code/processes/converting-process/ft-anchor-keywords/build.gradle

@@ -14,9 +14,9 @@ apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
     implementation project(':code:common:config')
+    implementation project(':code:common:service')
     implementation project(':code:common:model')
     implementation project(':code:common:db')
-    implementation project(':code:common:process')
     implementation project(':code:processes:converting-process:ft-keyword-extraction')
     implementation project(':code:libraries:language-processing')
     implementation project(':code:libraries:term-frequency-dict')

code/processes/converting-process/ft-anchor-keywords/java/nu/marginalia/atags/source/AnchorTagsSourceFactory.java

@@ -2,10 +2,10 @@ package nu.marginalia.atags.source;
 
 import com.google.inject.Inject;
 import com.zaxxer.hikari.HikariDataSource;
-import nu.marginalia.ProcessConfiguration;
 import nu.marginalia.WmsaHome;
 import nu.marginalia.atags.model.DomainLinks;
 import nu.marginalia.model.EdgeDomain;
+import nu.marginalia.process.ProcessConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

code/processes/converting-process/java/nu/marginalia/converting/ConverterMain.java

@@ -4,8 +4,6 @@ import com.google.gson.Gson;
 import com.google.inject.Guice;
 import com.google.inject.Inject;
 import com.google.inject.Injector;
-import nu.marginalia.ProcessConfiguration;
-import nu.marginalia.ProcessConfigurationModule;
 import nu.marginalia.converting.model.CrawlPlan;
 import nu.marginalia.converting.model.WorkDir;
 import nu.marginalia.converting.processor.DomainProcessor;
@@ -17,14 +15,14 @@ import nu.marginalia.converting.writer.ConverterWriter;
 import nu.marginalia.io.CrawledDomainReader;
 import nu.marginalia.io.SerializableCrawlDataStream;
 import nu.marginalia.mq.MessageQueueFactory;
-import nu.marginalia.mq.MqMessage;
+import nu.marginalia.mqapi.converting.ConvertRequest;
-import nu.marginalia.mq.inbox.MqInboxResponse;
+import nu.marginalia.process.ProcessConfiguration;
-import nu.marginalia.mq.inbox.MqSingleShotInbox;
+import nu.marginalia.process.ProcessConfigurationModule;
+import nu.marginalia.process.ProcessMainClass;
 import nu.marginalia.process.control.ProcessHeartbeat;
 import nu.marginalia.process.control.ProcessHeartbeatImpl;
 import nu.marginalia.process.log.WorkLog;
 import nu.marginalia.process.log.WorkLogEntry;
-import nu.marginalia.service.ProcessMainClass;
 import nu.marginalia.service.module.DatabaseModule;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.util.SimpleBlockingThreadPool;
@@ -34,13 +32,13 @@ import org.apache.logging.log4j.util.Strings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.sql.SQLException;
 import java.util.Collection;
 import java.util.List;
 import java.util.Optional;
-import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Function;
@@ -50,12 +48,9 @@ import static nu.marginalia.mqapi.ProcessInboxNames.CONVERTER_INBOX;
 public class ConverterMain extends ProcessMainClass {
     private static final Logger logger = LoggerFactory.getLogger(ConverterMain.class);
     private final DomainProcessor processor;
-    private final Gson gson;
     private final ProcessHeartbeat heartbeat;
-    private final MessageQueueFactory messageQueueFactory;
     private final FileStorageService fileStorageService;
     private final SideloadSourceFactory sideloadSourceFactory;
-    private final int node;
 
     public static void main(String... args) throws Exception {
 
@@ -70,8 +65,9 @@ public class ConverterMain extends ProcessMainClass {
 
             logger.info("Starting pipe");
 
-            converter
+            Instructions<ConvertRequest> instructions = converter.fetchInstructions(ConvertRequest.class);
-                    .fetchInstructions()
+
+            converter.createAction(instructions)
                     .execute(converter);
 
             logger.info("Finished");
@@ -83,6 +79,65 @@ public class ConverterMain extends ProcessMainClass {
         System.exit(0);
     }
 
+    private Action createAction(Instructions<ConvertRequest> instructions) throws SQLException, IOException {
+        var request = instructions.value();
+        final Path inputPath = request.getInputPath();
+
+        return switch (request.action) {
+            case ConvertCrawlData -> {
+                var crawlData = fileStorageService.getStorage(request.crawlStorage);
+                var processData = fileStorageService.getStorage(request.processedDataStorage);
+
+                var plan = new CrawlPlan(null,
+                        new WorkDir(crawlData.asPath().toString(), "crawler.log"),
+                        new WorkDir(processData.asPath().toString(), "processor.log")
+                );
+
+                yield new ConvertCrawlDataAction(plan, instructions);
+            }
+            case SideloadEncyclopedia -> {
+                var processData = fileStorageService.getStorage(request.processedDataStorage);
+
+                yield new SideloadAction(
+                        sideloadSourceFactory.sideloadEncyclopediaMarginaliaNu(inputPath, request.baseUrl),
+                        processData.asPath(),
+                        instructions);
+            }
+            case SideloadDirtree -> {
+                var processData = fileStorageService.getStorage(request.processedDataStorage);
+
+                yield new SideloadAction(
+                        sideloadSourceFactory.sideloadDirtree(inputPath),
+                        processData.asPath(),
+                        instructions);
+            }
+            case SideloadWarc -> {
+                var processData = fileStorageService.getStorage(request.processedDataStorage);
+
+                yield new SideloadAction(
+                        sideloadSourceFactory.sideloadWarc(inputPath),
+                        processData.asPath(),
+                        instructions);
+            }
+            case SideloadReddit -> {
+                var processData = fileStorageService.getStorage(request.processedDataStorage);
+
+                yield new SideloadAction(
+                        sideloadSourceFactory.sideloadReddit(inputPath),
+                        processData.asPath(),
+                        instructions);
+            }
+            case SideloadStackexchange -> {
+                var processData = fileStorageService.getStorage(request.processedDataStorage);
+
+                yield new SideloadAction(
+                        sideloadSourceFactory.sideloadStackexchange(inputPath),
+                        processData.asPath(),
+                        instructions);
+            }
+        };
+    }
+
     @Inject
     public ConverterMain(
             DomainProcessor processor,
@@ -94,13 +149,12 @@ public class ConverterMain extends ProcessMainClass {
             ProcessConfiguration processConfiguration
             )
     {
+        super(messageQueueFactory, processConfiguration, gson, CONVERTER_INBOX);
+
         this.processor = processor;
-        this.gson = gson;
         this.heartbeat = heartbeat;
-        this.messageQueueFactory = messageQueueFactory;
         this.fileStorageService = fileStorageService;
         this.sideloadSourceFactory = sideloadSourceFactory;
-        this.node = processConfiguration.node();
 
         heartbeat.start();
     }
@@ -220,45 +274,44 @@ public class ConverterMain extends ProcessMainClass {
         }
     }
 
-    private abstract static class ConvertRequest {
+    private abstract static class Action {
-        private final MqMessage message;
+        final Instructions<?> instructions;
-        private final MqSingleShotInbox inbox;
 
-        private ConvertRequest(MqMessage message, MqSingleShotInbox inbox) {
+        public Action(Instructions<?> instructions) {
-            this.message = message;
+            this.instructions = instructions;
-            this.inbox = inbox;
         }
 
         public abstract void execute(ConverterMain converterMain) throws Exception;
 
         public void ok() {
-            inbox.sendResponse(message, MqInboxResponse.ok());
+            instructions.ok();
         }
         public void err() {
-            inbox.sendResponse(message, MqInboxResponse.err());
+            instructions.err();
         }
     }
 
-    private static class SideloadAction extends ConvertRequest {
+    private static class SideloadAction extends Action {
 
         private final Collection<? extends SideloadSource> sideloadSources;
         private final Path workDir;
 
         SideloadAction(SideloadSource sideloadSource,
                        Path workDir,
-                       MqMessage message, MqSingleShotInbox inbox) {
+                       Instructions<?> instructions) {
-            super(message, inbox);
+            super(instructions);
             this.sideloadSources = List.of(sideloadSource);
             this.workDir = workDir;
         }
 
         SideloadAction(Collection<? extends SideloadSource> sideloadSources,
                        Path workDir,
-                       MqMessage message, MqSingleShotInbox inbox) {
+                       Instructions<?> instructions) {
-            super(message, inbox);
+            super(instructions);
             this.sideloadSources = sideloadSources;
             this.workDir = workDir;
         }
+
         @Override
         public void execute(ConverterMain converterMain) throws Exception {
             try {
@@ -272,11 +325,12 @@ public class ConverterMain extends ProcessMainClass {
         }
     }
 
-    private static class ConvertCrawlDataAction extends ConvertRequest {
+    private static class ConvertCrawlDataAction extends Action {
         private final CrawlPlan plan;
 
-        private ConvertCrawlDataAction(CrawlPlan plan, MqMessage message, MqSingleShotInbox inbox) {
+        private ConvertCrawlDataAction(CrawlPlan plan,
-            super(message, inbox);
+                                       Instructions<?> instructions) {
+            super(instructions);
             this.plan = plan;
         }
 
@@ -294,94 +348,4 @@ public class ConverterMain extends ProcessMainClass {
         }
     }
 
-
-    private ConvertRequest fetchInstructions() throws Exception {
-
-        var inbox = messageQueueFactory.createSingleShotInbox(CONVERTER_INBOX, node, UUID.randomUUID());
-
-        var msgOpt = getMessage(inbox, nu.marginalia.mqapi.converting.ConvertRequest.class.getSimpleName());
-        var msg = msgOpt.orElseThrow(() -> new RuntimeException("No message received"));
-
-        try {
-            var request = gson.fromJson(msg.payload(), nu.marginalia.mqapi.converting.ConvertRequest.class);
-
-            // will be null on ConvertCrawlData
-            final Path inputPath = request.getInputPath();
-
-            return switch (request.action) {
-                case ConvertCrawlData -> {
-                    var crawlData = fileStorageService.getStorage(request.crawlStorage);
-                    var processData = fileStorageService.getStorage(request.processedDataStorage);
-
-                    var plan = new CrawlPlan(null,
-                            new WorkDir(crawlData.asPath().toString(), "crawler.log"),
-                            new WorkDir(processData.asPath().toString(), "processor.log")
-                    );
-
-                    yield new ConvertCrawlDataAction(plan, msg, inbox);
-                }
-                case SideloadEncyclopedia -> {
-                    var processData = fileStorageService.getStorage(request.processedDataStorage);
-
-                    yield new SideloadAction(
-                            sideloadSourceFactory.sideloadEncyclopediaMarginaliaNu(inputPath, request.baseUrl),
-                            processData.asPath(),
-                            msg, inbox);
-                }
-                case SideloadDirtree -> {
-                    var processData = fileStorageService.getStorage(request.processedDataStorage);
-
-                    yield new SideloadAction(
-                            sideloadSourceFactory.sideloadDirtree(inputPath),
-                            processData.asPath(),
-                            msg, inbox);
-                }
-                case SideloadWarc -> {
-                    var processData = fileStorageService.getStorage(request.processedDataStorage);
-
-                    yield new SideloadAction(
-                            sideloadSourceFactory.sideloadWarc(inputPath),
-                            processData.asPath(),
-                            msg, inbox);
-                }
-                case SideloadReddit -> {
-                    var processData = fileStorageService.getStorage(request.processedDataStorage);
-
-                    yield new SideloadAction(
-                            sideloadSourceFactory.sideloadReddit(inputPath),
-                            processData.asPath(),
-                            msg, inbox);
-                }
-                case SideloadStackexchange -> {
-                    var processData = fileStorageService.getStorage(request.processedDataStorage);
-
-                    yield new SideloadAction(
-                            sideloadSourceFactory.sideloadStackexchange(inputPath),
-                            processData.asPath(),
-                            msg, inbox);
-                }
-            };
-        }
-        catch (Exception ex) {
-            inbox.sendResponse(msg, MqInboxResponse.err(ex.getClass().getSimpleName() + ": " + ex.getMessage()));
-
-            throw ex;
-        }
-    }
-
-    private Optional<MqMessage> getMessage(MqSingleShotInbox inbox, String expectedFunction) throws SQLException, InterruptedException {
-        var opt = inbox.waitForMessage(30, TimeUnit.SECONDS);
-        if (opt.isPresent()) {
-            if (!opt.get().function().equals(expectedFunction)) {
-                throw new RuntimeException("Unexpected function: " + opt.get().function());
-            }
-            return opt;
-        }
-        else {
-            var stolenMessage = inbox.stealMessage(msg -> msg.function().equals(expectedFunction));
-            stolenMessage.ifPresent(mqMessage -> logger.info("Stole message {}", mqMessage));
-            return stolenMessage;
-        }
-    }
-
 }

code/processes/converting-process/java/nu/marginalia/converting/processor/DomainProcessor.java

@@ -1,7 +1,6 @@
 package nu.marginalia.converting.processor;
 
 import com.google.inject.Inject;
-import nu.marginalia.atags.AnchorTextKeywords;
 import nu.marginalia.atags.model.DomainLinks;
 import nu.marginalia.atags.source.AnchorTagsSource;
 import nu.marginalia.atags.source.AnchorTagsSourceFactory;
@@ -37,7 +36,6 @@ public class DomainProcessor {
     private final DocumentProcessor documentProcessor;
     private final SiteWords siteWords;
     private final AnchorTagsSource anchorTagsSource;
-    private final AnchorTextKeywords anchorTextKeywords;
     private final GeoIpDictionary geoIpDictionary;
 
     private final Logger logger = LoggerFactory.getLogger(getClass());
@@ -46,12 +44,10 @@ public class DomainProcessor {
     public DomainProcessor(DocumentProcessor documentProcessor,
                            SiteWords siteWords,
                            AnchorTagsSourceFactory anchorTagsSourceFactory,
-                           AnchorTextKeywords anchorTextKeywords,
                            GeoIpDictionary geoIpDictionary) throws SQLException
     {
         this.documentProcessor = documentProcessor;
         this.siteWords = siteWords;
-        this.anchorTextKeywords = anchorTextKeywords;
         this.anchorTagsSource = anchorTagsSourceFactory.create();
         this.geoIpDictionary = geoIpDictionary;
 

code/processes/converting-process/java/nu/marginalia/converting/sideload/SideloaderProcessing.java

@@ -51,10 +51,6 @@ public class SideloaderProcessing {
                 "NP",
                 "",
                 body,
-                Integer.toHexString(url.hashCode()),
-                url,
-                "",
-                "SIDELOAD",
                 false,
                 null,
                 null

code/processes/converting-process/java/nu/marginalia/converting/writer/ConverterBatchWriter.java

@@ -27,6 +27,8 @@ public class ConverterBatchWriter implements AutoCloseable, ConverterBatchWriter
     private final SlopDomainLinkRecord.Writer domainLinkWriter;
     private final SlopDocumentRecord.Writer documentWriter;
 
+    private int ordinalOffset = 0;
+
     private static final Logger logger = LoggerFactory.getLogger(ConverterBatchWriter.class);
 
     public ConverterBatchWriter(Path basePath, int batchNumber) throws IOException {
@@ -46,6 +48,11 @@ public class ConverterBatchWriter implements AutoCloseable, ConverterBatchWriter
         documentWriter = new SlopDocumentRecord.Writer(ProcessedDataFileNames.documentFileName(basePath), batchNumber);
     }
 
+    /** Sets the lowest ordinal value for the documents in this batch */
+    public void setOrdinalOffset(int ordinalOffset) {
+        this.ordinalOffset = ordinalOffset;
+    }
+
     @Override
     public void write(ConverterBatchWritableIf writable) throws IOException {
         writable.write(this);
@@ -79,7 +86,7 @@ public class ConverterBatchWriter implements AutoCloseable, ConverterBatchWriter
             throws IOException
     {
 
-        int ordinal = 0;
+        int ordinal = ordinalOffset;
 
         String domainName = domain.toString();
 

code/processes/converting-process/test/nu/marginalia/converting/ConvertingIntegrationTest.java

@@ -147,10 +147,6 @@ public class ConvertingIntegrationTest {
                     "",
                     "",
                     readClassPathFile(p.toString()),
-                    Double.toString(Math.random()),
-                    "https://memex.marginalia.nu/" + file,
-                    null,
-                    "",
                     false,
                     null,
                     null

code/processes/converting-process/test/nu/marginalia/converting/ConvertingIntegrationTestModule.java

@@ -3,9 +3,9 @@ package nu.marginalia.converting;
 import com.google.inject.AbstractModule;
 import com.google.inject.name.Names;
 import nu.marginalia.LanguageModels;
-import nu.marginalia.ProcessConfiguration;
 import nu.marginalia.WmsaHome;
 import nu.marginalia.converting.processor.ConverterDomainTypes;
+import nu.marginalia.process.ProcessConfiguration;
 import nu.marginalia.service.module.ServiceConfiguration;
 import org.mockito.Mockito;
 

code/processes/converting-process/test/nu/marginalia/converting/sideload/reddit/RedditSideloaderTest.java

@@ -2,10 +2,10 @@ package nu.marginalia.converting.sideload.reddit;
 
 import com.google.inject.AbstractModule;
 import com.google.inject.Guice;
-import nu.marginalia.ProcessConfiguration;
 import nu.marginalia.converting.ConverterModule;
 import nu.marginalia.converting.processor.ConverterDomainTypes;
 import nu.marginalia.converting.sideload.SideloadSourceFactory;
+import nu.marginalia.process.ProcessConfiguration;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;

code/processes/crawling-process/build.gradle

@@ -21,7 +21,6 @@ tasks.distZip.enabled = false
 apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
-    implementation project(':code:common:process')
 
     implementation project(':code:common:db')
     implementation project(':code:common:model')

code/processes/crawling-process/java/nu/marginalia/crawl/CrawlerMain.java

@@ -5,8 +5,6 @@ import com.google.inject.Guice;
 import com.google.inject.Inject;
 import com.google.inject.Injector;
 import com.zaxxer.hikari.HikariDataSource;
-import nu.marginalia.ProcessConfiguration;
-import nu.marginalia.ProcessConfigurationModule;
 import nu.marginalia.UserAgent;
 import nu.marginalia.WmsaHome;
 import nu.marginalia.atags.model.DomainLinks;
@@ -25,15 +23,15 @@ import nu.marginalia.io.CrawledDomainReader;
 import nu.marginalia.io.CrawlerOutputFile;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.mq.MessageQueueFactory;
-import nu.marginalia.mq.MqMessage;
-import nu.marginalia.mq.inbox.MqInboxResponse;
-import nu.marginalia.mq.inbox.MqSingleShotInbox;
 import nu.marginalia.parquet.crawldata.CrawledDocumentParquetRecordFileWriter;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfigurationModule;
+import nu.marginalia.process.ProcessMainClass;
 import nu.marginalia.process.control.ProcessHeartbeatImpl;
 import nu.marginalia.process.log.WorkLog;
-import nu.marginalia.service.ProcessMainClass;
 import nu.marginalia.service.module.DatabaseModule;
 import nu.marginalia.storage.FileStorageService;
+import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.util.SimpleBlockingThreadPool;
 import okhttp3.ConnectionPool;
 import okhttp3.Dispatcher;
@@ -46,8 +44,10 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 import java.security.Security;
-import java.sql.SQLException;
+import java.util.ArrayList;
-import java.util.*;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -59,14 +59,12 @@ public class CrawlerMain extends ProcessMainClass {
 
     private final UserAgent userAgent;
     private final ProcessHeartbeatImpl heartbeat;
-    private final MessageQueueFactory messageQueueFactory;
     private final DomainProber domainProber;
     private final FileStorageService fileStorageService;
     private final AnchorTagsSourceFactory anchorTagsSourceFactory;
     private final WarcArchiverFactory warcArchiverFactory;
     private final HikariDataSource dataSource;
     private final DomainBlacklist blacklist;
-    private final Gson gson;
     private final int node;
     private final SimpleBlockingThreadPool pool;
 
@@ -96,16 +94,17 @@ public class CrawlerMain extends ProcessMainClass {
                        HikariDataSource dataSource,
                        DomainBlacklist blacklist,
                        Gson gson) throws InterruptedException {
+
+        super(messageQueueFactory, processConfiguration, gson, CRAWLER_INBOX);
+
         this.userAgent = userAgent;
         this.heartbeat = heartbeat;
-        this.messageQueueFactory = messageQueueFactory;
         this.domainProber = domainProber;
         this.fileStorageService = fileStorageService;
         this.anchorTagsSourceFactory = anchorTagsSourceFactory;
         this.warcArchiverFactory = warcArchiverFactory;
         this.dataSource = dataSource;
         this.blacklist = blacklist;
-        this.gson = gson;
         this.node = processConfiguration.node();
 
         pool = new SimpleBlockingThreadPool("CrawlerPool",
@@ -144,13 +143,14 @@ public class CrawlerMain extends ProcessMainClass {
             );
             var crawler = injector.getInstance(CrawlerMain.class);
 
-            var instructions = crawler.fetchInstructions();
+            var instructions = crawler.fetchInstructions(nu.marginalia.mqapi.crawling.CrawlRequest.class);
             try {
-                if (instructions.targetDomainName != null) {
+                var req = instructions.value();
-                    crawler.runForSingleDomain(instructions.targetDomainName, instructions.outputDir);
+                if (req.targetDomainName != null) {
+                    crawler.runForSingleDomain(req.targetDomainName, req.crawlStorage);
                 }
                 else {
-                    crawler.runForDatabaseDomains(instructions.outputDir);
+                    crawler.runForDatabaseDomains(req.crawlStorage);
                 }
                 instructions.ok();
             } catch (Exception ex) {
@@ -166,6 +166,10 @@ public class CrawlerMain extends ProcessMainClass {
         System.exit(0);
     }
 
+    public void runForDatabaseDomains(FileStorageId fileStorageId) throws Exception {
+        runForDatabaseDomains(fileStorageService.getStorage(fileStorageId).asPath());
+    }
+
     public void runForDatabaseDomains(Path outputDir) throws Exception {
 
         heartbeat.start();
@@ -285,6 +289,11 @@ public class CrawlerMain extends ProcessMainClass {
         }
     }
 
+
+    public void runForSingleDomain(String targetDomainName, FileStorageId fileStorageId) throws Exception {
+        runForSingleDomain(targetDomainName, fileStorageService.getStorage(fileStorageId).asPath());
+    }
+
     public void runForSingleDomain(String targetDomainName, Path outputDir) throws Exception {
 
         heartbeat.start();
@@ -410,70 +419,6 @@ public class CrawlerMain extends ProcessMainClass {
 
     }
 
-
-
-    private static class CrawlRequest {
-        private final Path outputDir;
-        private final MqMessage message;
-        private final MqSingleShotInbox inbox;
-
-        private final String targetDomainName;
-
-        CrawlRequest(String targetDomainName,
-                     Path outputDir,
-                     MqMessage message,
-                     MqSingleShotInbox inbox)
-        {
-            this.message = message;
-            this.inbox = inbox;
-            this.outputDir = outputDir;
-            this.targetDomainName = targetDomainName;
-        }
-
-
-        public void ok() {
-            inbox.sendResponse(message, MqInboxResponse.ok());
-        }
-        public void err() {
-            inbox.sendResponse(message, MqInboxResponse.err());
-        }
-
-    }
-
-    private CrawlRequest fetchInstructions() throws Exception {
-
-        var inbox = messageQueueFactory.createSingleShotInbox(CRAWLER_INBOX, node, UUID.randomUUID());
-
-        logger.info("Waiting for instructions");
-
-        var msgOpt = getMessage(inbox, nu.marginalia.mqapi.crawling.CrawlRequest.class.getSimpleName());
-        var msg = msgOpt.orElseThrow(() -> new RuntimeException("No message received"));
-
-        var request = gson.fromJson(msg.payload(), nu.marginalia.mqapi.crawling.CrawlRequest.class);
-        var crawlStorage = fileStorageService.getStorage(request.crawlStorage);
-
-        return new CrawlRequest(
-                request.targetDomainName,
-                crawlStorage.asPath(),
-                msg,
-                inbox);
-    }
-
-    private Optional<MqMessage> getMessage(MqSingleShotInbox inbox, String expectedFunction) throws SQLException, InterruptedException {
-        var opt = inbox.waitForMessage(30, TimeUnit.SECONDS);
-        if (opt.isPresent()) {
-            if (!opt.get().function().equals(expectedFunction)) {
-                throw new RuntimeException("Unexpected function: " + opt.get().function());
-            }
-            return opt;
-        }
-        else {
-            var stolenMessage = inbox.stealMessage(msg -> msg.function().equals(expectedFunction));
-            stolenMessage.ifPresent(mqMessage -> logger.info("Stole message {}", mqMessage));
-            return stolenMessage;
-        }
-    }
-
     public record CrawlSpecRecord(@NotNull String domain, int crawlDepth, @NotNull List<String> urls) {
 
         public CrawlSpecRecord(String domain, int crawlDepth) {

code/processes/crawling-process/java/nu/marginalia/crawl/retreival/CrawlDelayTimer.java

@@ -19,8 +19,13 @@ public class CrawlDelayTimer {
     private final long delayTime;
 
     public CrawlDelayTimer(long delayTime) {
+        if (delayTime <= 0) {
+            this.delayTime = DEFAULT_CRAWL_DELAY_MIN_MS;
+        }
+        else {
             this.delayTime = delayTime;
         }
+    }
 
     /** Call when we've gotten an HTTP 429 response.  This will wait a moment, and then
      * set a flag that slows down the main crawl delay as well. */
@@ -41,6 +46,10 @@ public class CrawlDelayTimer {
         Thread.sleep(delay.toMillis());
     }
 
+    public void waitFetchDelay() {
+        waitFetchDelay(0);
+    }
+
     public void waitFetchDelay(long spentTime) {
         long sleepTime = delayTime;
 

code/processes/crawling-process/java/nu/marginalia/crawl/warc/WarcArchiverFactory.java

@@ -1,8 +1,8 @@
 package nu.marginalia.crawl.warc;
 
 import com.google.inject.Inject;
-import nu.marginalia.ProcessConfiguration;
 import nu.marginalia.nodecfg.NodeConfigurationService;
+import nu.marginalia.process.ProcessConfiguration;
 import org.apache.commons.io.IOUtils;
 
 import java.io.IOException;

code/processes/crawling-process/model/build.gradle

@@ -20,7 +20,6 @@ dependencies {
     implementation project(':code:common:model')
     implementation project(':code:common:db')
     implementation project(':code:common:config')
-    implementation project(':code:common:process')
     implementation project(':code:index:api')
     implementation project(':code:processes:crawling-process:ft-content-type')
     implementation project(':code:libraries:language-processing')

code/processes/crawling-process/model/java/nu/marginalia/io/crawldata/format/ParquetSerializableCrawlDataStream.java

@@ -148,10 +148,7 @@ public class ParquetSerializableCrawlDataStream implements AutoCloseable, Serial
                 "",
                 nextRecord.headers,
                 bodyString,
-                Long.toHexString(hash.hashNearlyASCII(bodyString)), // this field isn't actually used, maybe we can skip calculating it?
+                // this field isn't actually used, maybe we can skip calculating it?
-                nextRecord.url,
-                null,
-                "",
                 nextRecord.cookies,
                 lastModified,
                 etag));

code/processes/crawling-process/model/java/nu/marginalia/model/crawldata/CrawledDocument.java

@@ -4,7 +4,7 @@ import nu.marginalia.model.EdgeUrl;
 import org.apache.commons.lang3.StringUtils;
 import org.jetbrains.annotations.Nullable;
 
-public class CrawledDocument implements SerializableCrawlData {
+public final class CrawledDocument implements SerializableCrawlData {
     public String crawlId;
 
     public String url;
@@ -21,16 +21,6 @@ public class CrawledDocument implements SerializableCrawlData {
 
     public String documentBody;
 
-    @Deprecated
-    public String documentBodyHash;
-
-    @Deprecated
-    public String canonicalUrl;
-    public String redirectUrl;
-
-    @Deprecated
-    public String recrawlState;
-
     /**
      * This is not guaranteed to be set in all versions of the format,
      * information may come in CrawledDomain instead
@@ -40,7 +30,7 @@ public class CrawledDocument implements SerializableCrawlData {
     public String lastModifiedMaybe;
     public String etagMaybe;
 
-    public CrawledDocument(String crawlId, String url, String contentType, String timestamp, int httpStatus, String crawlerStatus, String crawlerStatusDesc, @Nullable String headers, String documentBody, String documentBodyHash, String canonicalUrl, String redirectUrl, String recrawlState, Boolean hasCookies, String lastModifiedMaybe, String etagMaybe) {
+    public CrawledDocument(String crawlId, String url, String contentType, String timestamp, int httpStatus, String crawlerStatus, String crawlerStatusDesc, @Nullable String headers, String documentBody, Boolean hasCookies, String lastModifiedMaybe, String etagMaybe) {
         this.crawlId = crawlId;
         this.url = url;
         this.contentType = contentType;
@@ -50,10 +40,6 @@ public class CrawledDocument implements SerializableCrawlData {
         this.crawlerStatusDesc = crawlerStatusDesc;
         this.headers = headers;
         this.documentBody = documentBody;
-        this.documentBodyHash = documentBodyHash;
-        this.canonicalUrl = canonicalUrl;
-        this.redirectUrl = redirectUrl;
-        this.recrawlState = recrawlState;
         this.hasCookies = hasCookies;
         this.lastModifiedMaybe = lastModifiedMaybe;
         this.etagMaybe = etagMaybe;
@@ -120,7 +106,7 @@ public class CrawledDocument implements SerializableCrawlData {
     }
 
     public String toString() {
-        return "CrawledDocument(crawlId=" + this.crawlId + ", url=" + this.url + ", contentType=" + this.contentType + ", timestamp=" + this.timestamp + ", httpStatus=" + this.httpStatus + ", crawlerStatus=" + this.crawlerStatus + ", crawlerStatusDesc=" + this.crawlerStatusDesc + ", headers=" + this.headers + ", documentBody=" + this.documentBody + ", documentBodyHash=" + this.documentBodyHash + ", canonicalUrl=" + this.canonicalUrl + ", redirectUrl=" + this.redirectUrl + ", recrawlState=" + this.recrawlState + ", hasCookies=" + this.hasCookies + ", lastModifiedMaybe=" + this.lastModifiedMaybe + ", etagMaybe=" + this.etagMaybe + ")";
+        return "CrawledDocument(crawlId=" + this.crawlId + ", url=" + this.url + ", contentType=" + this.contentType + ", timestamp=" + this.timestamp + ", httpStatus=" + this.httpStatus + ", crawlerStatus=" + this.crawlerStatus + ", crawlerStatusDesc=" + this.crawlerStatusDesc + ", headers=" + this.headers + ", documentBody=" + this.documentBody + ", hasCookies=" + this.hasCookies + ", lastModifiedMaybe=" + this.lastModifiedMaybe + ", etagMaybe=" + this.etagMaybe + ")";
     }
 
     public static class CrawledDocumentBuilder {
@@ -133,9 +119,6 @@ public class CrawledDocument implements SerializableCrawlData {
         private String crawlerStatusDesc;
         private @Nullable String headers;
         private String documentBody;
-        private String documentBodyHash;
-        private String canonicalUrl;
-        private String redirectUrl;
         private String recrawlState;
         private Boolean hasCookies;
         private String lastModifiedMaybe;
@@ -189,23 +172,6 @@ public class CrawledDocument implements SerializableCrawlData {
             return this;
         }
 
-        @Deprecated
-        public CrawledDocumentBuilder documentBodyHash(String documentBodyHash) {
-            this.documentBodyHash = documentBodyHash;
-            return this;
-        }
-
-        @Deprecated
-        public CrawledDocumentBuilder canonicalUrl(String canonicalUrl) {
-            this.canonicalUrl = canonicalUrl;
-            return this;
-        }
-
-        public CrawledDocumentBuilder redirectUrl(String redirectUrl) {
-            this.redirectUrl = redirectUrl;
-            return this;
-        }
-
         @Deprecated
         public CrawledDocumentBuilder recrawlState(String recrawlState) {
             this.recrawlState = recrawlState;
@@ -228,11 +194,11 @@ public class CrawledDocument implements SerializableCrawlData {
         }
 
         public CrawledDocument build() {
-            return new CrawledDocument(this.crawlId, this.url, this.contentType, this.timestamp, this.httpStatus, this.crawlerStatus, this.crawlerStatusDesc, this.headers, this.documentBody, this.documentBodyHash, this.canonicalUrl, this.redirectUrl, this.recrawlState, this.hasCookies, this.lastModifiedMaybe, this.etagMaybe);
+            return new CrawledDocument(this.crawlId, this.url, this.contentType, this.timestamp, this.httpStatus, this.crawlerStatus, this.crawlerStatusDesc, this.headers, this.documentBody, this.hasCookies, this.lastModifiedMaybe, this.etagMaybe);
         }
 
         public String toString() {
-            return "CrawledDocument.CrawledDocumentBuilder(crawlId=" + this.crawlId + ", url=" + this.url + ", contentType=" + this.contentType + ", timestamp=" + this.timestamp + ", httpStatus=" + this.httpStatus + ", crawlerStatus=" + this.crawlerStatus + ", crawlerStatusDesc=" + this.crawlerStatusDesc + ", headers=" + this.headers + ", documentBody=" + this.documentBody + ", documentBodyHash=" + this.documentBodyHash + ", canonicalUrl=" + this.canonicalUrl + ", redirectUrl=" + this.redirectUrl + ", recrawlState=" + this.recrawlState + ", hasCookies=" + this.hasCookies + ", lastModifiedMaybe=" + this.lastModifiedMaybe + ", etagMaybe=" + this.etagMaybe + ")";
+            return "CrawledDocument.CrawledDocumentBuilder(crawlId=" + this.crawlId + ", url=" + this.url + ", contentType=" + this.contentType + ", timestamp=" + this.timestamp + ", httpStatus=" + this.httpStatus + ", crawlerStatus=" + this.crawlerStatus + ", crawlerStatusDesc=" + this.crawlerStatusDesc + ", headers=" + this.headers + ", documentBody=" + this.documentBody +  ", recrawlState=" + this.recrawlState + ", hasCookies=" + this.hasCookies + ", lastModifiedMaybe=" + this.lastModifiedMaybe + ", etagMaybe=" + this.etagMaybe + ")";
         }
     }
 }

code/processes/crawling-process/model/java/nu/marginalia/model/crawldata/CrawledDomain.java

@@ -1,8 +1,9 @@
 package nu.marginalia.model.crawldata;
 
 import java.util.List;
+import java.util.Objects;
 
-public class CrawledDomain implements SerializableCrawlData {
+public final class CrawledDomain implements SerializableCrawlData {
     public String domain;
 
     public String redirectDomain;
@@ -11,6 +12,7 @@ public class CrawledDomain implements SerializableCrawlData {
     public String crawlerStatusDesc;
     public String ip;
 
+    @Deprecated // This used to be populated, but is no longer
     public List<CrawledDocument> doc;
 
     /**
@@ -29,15 +31,6 @@ public class CrawledDomain implements SerializableCrawlData {
         this.cookies = cookies;
     }
 
-    public static CrawledDomainBuilder builder() {
-        return new CrawledDomainBuilder();
-    }
-
-    public int size() {
-        if (doc == null) return 0;
-        return doc.size();
-    }
-
     public String getDomain() {
         return this.domain;
     }
@@ -94,119 +87,26 @@ public class CrawledDomain implements SerializableCrawlData {
         this.cookies = cookies;
     }
 
-    public boolean equals(final Object o) {
+    @Override
-        if (o == this) return true;
+    public boolean equals(Object o) {
-        if (!(o instanceof CrawledDomain)) return false;
+        if (!(o instanceof CrawledDomain that)) return false;
-        final CrawledDomain other = (CrawledDomain) o;
+
-        if (!other.canEqual((Object) this)) return false;
+        return Objects.equals(domain, that.domain) && Objects.equals(redirectDomain, that.redirectDomain) && Objects.equals(crawlerStatus, that.crawlerStatus) && Objects.equals(crawlerStatusDesc, that.crawlerStatusDesc) && Objects.equals(ip, that.ip) && Objects.equals(doc, that.doc) && Objects.equals(cookies, that.cookies);
-        final Object this$domain = this.getDomain();
-        final Object other$domain = other.getDomain();
-        if (this$domain == null ? other$domain != null : !this$domain.equals(other$domain)) return false;
-        final Object this$redirectDomain = this.getRedirectDomain();
-        final Object other$redirectDomain = other.getRedirectDomain();
-        if (this$redirectDomain == null ? other$redirectDomain != null : !this$redirectDomain.equals(other$redirectDomain))
-            return false;
-        final Object this$crawlerStatus = this.getCrawlerStatus();
-        final Object other$crawlerStatus = other.getCrawlerStatus();
-        if (this$crawlerStatus == null ? other$crawlerStatus != null : !this$crawlerStatus.equals(other$crawlerStatus))
-            return false;
-        final Object this$crawlerStatusDesc = this.getCrawlerStatusDesc();
-        final Object other$crawlerStatusDesc = other.getCrawlerStatusDesc();
-        if (this$crawlerStatusDesc == null ? other$crawlerStatusDesc != null : !this$crawlerStatusDesc.equals(other$crawlerStatusDesc))
-            return false;
-        final Object this$ip = this.getIp();
-        final Object other$ip = other.getIp();
-        if (this$ip == null ? other$ip != null : !this$ip.equals(other$ip)) return false;
-        final Object this$doc = this.getDoc();
-        final Object other$doc = other.getDoc();
-        if (this$doc == null ? other$doc != null : !this$doc.equals(other$doc)) return false;
-        final Object this$cookies = this.getCookies();
-        final Object other$cookies = other.getCookies();
-        if (this$cookies == null ? other$cookies != null : !this$cookies.equals(other$cookies)) return false;
-        return true;
-    }
-
-    protected boolean canEqual(final Object other) {
-        return other instanceof CrawledDomain;
     }
 
+    @Override
     public int hashCode() {
-        final int PRIME = 59;
+        int result = Objects.hashCode(domain);
-        int result = 1;
+        result = 31 * result + Objects.hashCode(redirectDomain);
-        final Object $domain = this.getDomain();
+        result = 31 * result + Objects.hashCode(crawlerStatus);
-        result = result * PRIME + ($domain == null ? 43 : $domain.hashCode());
+        result = 31 * result + Objects.hashCode(crawlerStatusDesc);
-        final Object $redirectDomain = this.getRedirectDomain();
+        result = 31 * result + Objects.hashCode(ip);
-        result = result * PRIME + ($redirectDomain == null ? 43 : $redirectDomain.hashCode());
+        result = 31 * result + Objects.hashCode(doc);
-        final Object $crawlerStatus = this.getCrawlerStatus();
+        result = 31 * result + Objects.hashCode(cookies);
-        result = result * PRIME + ($crawlerStatus == null ? 43 : $crawlerStatus.hashCode());
-        final Object $crawlerStatusDesc = this.getCrawlerStatusDesc();
-        result = result * PRIME + ($crawlerStatusDesc == null ? 43 : $crawlerStatusDesc.hashCode());
-        final Object $ip = this.getIp();
-        result = result * PRIME + ($ip == null ? 43 : $ip.hashCode());
-        final Object $doc = this.getDoc();
-        result = result * PRIME + ($doc == null ? 43 : $doc.hashCode());
-        final Object $cookies = this.getCookies();
-        result = result * PRIME + ($cookies == null ? 43 : $cookies.hashCode());
         return result;
     }
 
     public String toString() {
         return "CrawledDomain(domain=" + this.getDomain() + ", redirectDomain=" + this.getRedirectDomain() + ", crawlerStatus=" + this.getCrawlerStatus() + ", crawlerStatusDesc=" + this.getCrawlerStatusDesc() + ", ip=" + this.getIp() + ", doc=" + this.getDoc() + ", cookies=" + this.getCookies() + ")";
     }
-
-    public static class CrawledDomainBuilder {
-        private String domain;
-        private String redirectDomain;
-        private String crawlerStatus;
-        private String crawlerStatusDesc;
-        private String ip;
-        private List<CrawledDocument> doc;
-        private List<String> cookies;
-
-        CrawledDomainBuilder() {
-        }
-
-        public CrawledDomainBuilder domain(String domain) {
-            this.domain = domain;
-            return this;
-        }
-
-        public CrawledDomainBuilder redirectDomain(String redirectDomain) {
-            this.redirectDomain = redirectDomain;
-            return this;
-        }
-
-        public CrawledDomainBuilder crawlerStatus(String crawlerStatus) {
-            this.crawlerStatus = crawlerStatus;
-            return this;
-        }
-
-        public CrawledDomainBuilder crawlerStatusDesc(String crawlerStatusDesc) {
-            this.crawlerStatusDesc = crawlerStatusDesc;
-            return this;
-        }
-
-        public CrawledDomainBuilder ip(String ip) {
-            this.ip = ip;
-            return this;
-        }
-
-        public CrawledDomainBuilder doc(List<CrawledDocument> doc) {
-            this.doc = doc;
-            return this;
-        }
-
-        public CrawledDomainBuilder cookies(List<String> cookies) {
-            this.cookies = cookies;
-            return this;
-        }
-
-        public CrawledDomain build() {
-            return new CrawledDomain(this.domain, this.redirectDomain, this.crawlerStatus, this.crawlerStatusDesc, this.ip, this.doc, this.cookies);
-        }
-
-        public String toString() {
-            return "CrawledDomain.CrawledDomainBuilder(domain=" + this.domain + ", redirectDomain=" + this.redirectDomain + ", crawlerStatus=" + this.crawlerStatus + ", crawlerStatusDesc=" + this.crawlerStatusDesc + ", ip=" + this.ip + ", doc=" + this.doc + ", cookies=" + this.cookies + ")";
-        }
-    }
 }

code/processes/crawling-process/model/java/nu/marginalia/model/crawldata/SerializableCrawlData.java

@@ -1,5 +1,5 @@
 package nu.marginalia.model.crawldata;
 
-public interface SerializableCrawlData {
+public sealed interface SerializableCrawlData permits CrawledDocument, CrawledDomain {
     String getDomain();
 }

code/processes/export-task-process/build.gradle

@@ -1,24 +1,33 @@
 plugins {
     id 'java'
 
-
+    id 'application'
-    id "de.undercouch.download" version "5.1.0"
-
     id 'jvm-test-suite'
 }
-
 java {
     toolchain {
         languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
     }
 }
 
+application {
+    mainClass = 'nu.marginalia.task.ExportTaskMain'
+    applicationName = 'export-task-process'
+}
+
+tasks.distZip.enabled = false
+
 apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
-    implementation project(':code:common:config')
-    implementation project(':code:common:process')
     implementation project(':code:common:model')
+    implementation project(':code:common:db')
+    implementation project(':code:common:service')
+    implementation project(':code:common:config')
+    implementation project(':code:libraries:message-queue')
+
+    implementation project(':code:functions:link-graph:api')
+    implementation project(':code:processes:process-mq-api')
     implementation project(':code:libraries:language-processing')
     implementation project(':code:libraries:term-frequency-dict')
     implementation project(':code:libraries:blocking-thread-pool')
@@ -28,20 +37,32 @@ dependencies {
     implementation project(':code:processes:converting-process')
     implementation project(':third-party:commons-codec')
 
-
     implementation libs.bundles.slf4j
+
     implementation libs.guava
     implementation dependencies.create(libs.guice.get()) {
         exclude group: 'com.google.guava'
     }
+    implementation libs.roaringbitmap
     implementation libs.trove
+    implementation libs.fastutil
+    implementation libs.bundles.mariadb
+    implementation libs.gson
     implementation libs.commons.lang3
+    implementation libs.commons.io
     implementation libs.commons.compress
-    implementation libs.notnull
+    implementation libs.commons.codec
     implementation libs.jsoup
 
+
+
     testImplementation libs.bundles.slf4j.test
     testImplementation libs.bundles.junit
     testImplementation libs.mockito
-}
 
+    testImplementation platform('org.testcontainers:testcontainers-bom:1.17.4')
+    testImplementation libs.commons.codec
+    testImplementation 'org.testcontainers:mariadb:1.17.4'
+    testImplementation 'org.testcontainers:junit-jupiter:1.17.4'
+    testImplementation project(':code:libraries:test-helpers')
+}

code/processes/export-task-process/java/nu/marginalia/adjacencies/WebsiteAdjacenciesCalculator.java

@@ -0,0 +1,127 @@
+package nu.marginalia.adjacencies;
+
+import com.google.inject.Inject;
+import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.api.linkgraph.AggregateLinkGraphClient;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.process.control.ProcessHeartbeatImpl;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
+import java.util.stream.IntStream;
+
+import static nu.marginalia.adjacencies.SparseBitVector.andCardinality;
+import static nu.marginalia.adjacencies.SparseBitVector.weightedProduct;
+
+public class WebsiteAdjacenciesCalculator {
+    private final AggregateLinkGraphClient domainLinksClient;
+    private final ProcessConfiguration configuration;
+    private final HikariDataSource dataSource;
+    public AdjacenciesData adjacenciesData;
+    public DomainAliases domainAliases;
+    private static final Logger logger = LoggerFactory.getLogger(WebsiteAdjacenciesCalculator.class);
+
+    float[] weights;
+
+    @Inject
+    public WebsiteAdjacenciesCalculator(AggregateLinkGraphClient domainLinksClient,
+                                        ProcessConfiguration configuration,
+                                        HikariDataSource dataSource) {
+        this.domainLinksClient = domainLinksClient;
+        this.configuration = configuration;
+        this.dataSource = dataSource;
+    }
+
+    public void export() throws Exception {
+        try (var processHeartbeat = new ProcessHeartbeatImpl(configuration, dataSource)) {
+            domainAliases = new DomainAliases(dataSource);
+            adjacenciesData = new AdjacenciesData(domainLinksClient, domainAliases);
+            weights = adjacenciesData.getWeights();
+
+            AdjacenciesLoader loader = new AdjacenciesLoader(dataSource);
+            var executor = Executors.newFixedThreadPool(16);
+
+            int total = adjacenciesData.getIdsList().size();
+            AtomicInteger progress = new AtomicInteger(0);
+            IntStream.of(adjacenciesData.getIdsList().toArray()).parallel()
+                    .filter(domainAliases::isNotAliased)
+                    .forEach(id -> {
+                        findAdjacent(id, loader::load);
+                        processHeartbeat.setProgress(progress.incrementAndGet() / (double) total);
+                    });
+
+            executor.shutdown();
+            System.out.println("Waiting for wrap-up");
+            loader.stop();
+        }
+    }
+
+    public void findAdjacent(int domainId, Consumer<DomainSimilarities> andThen) {
+        findAdjacentDtoS(domainId, andThen);
+    }
+
+    double cosineSimilarity(SparseBitVector a, SparseBitVector b) {
+        double andCardinality = andCardinality(a, b);
+        andCardinality /= Math.sqrt(a.getCardinality());
+        andCardinality /= Math.sqrt(b.getCardinality());
+        return andCardinality;
+    }
+
+    double expensiveCosineSimilarity(SparseBitVector a, SparseBitVector b) {
+        return weightedProduct(weights, a, b) / Math.sqrt(a.mulAndSum(weights) * b.mulAndSum(weights));
+    }
+
+    public record DomainSimilarities(int domainId, List<DomainSimilarity> similarities) {}
+
+    public record DomainSimilarity(int domainId, double value) {}
+
+    private void findAdjacentDtoS(int domainId, Consumer<DomainSimilarities> andThen) {
+        var vector = adjacenciesData.getVector(domainId);
+
+        if (vector == null || !vector.cardinalityExceeds(10)) {
+            return;
+        }
+
+        List<DomainSimilarity> similarities = new ArrayList<>(1000);
+
+        var items = adjacenciesData.getCandidates(vector);
+
+
+        int cardMin = Math.max(2, (int) (0.01 * vector.getCardinality()));
+
+        items.forEach(id -> {
+            var otherVec = adjacenciesData.getVector(id);
+
+            if (null == otherVec || otherVec == vector)
+                return true;
+
+            if (otherVec.getCardinality() < cardMin)
+                return true;
+
+            double similarity = cosineSimilarity(vector, otherVec);
+            if (similarity > 0.1) {
+                var recalculated = expensiveCosineSimilarity(vector, otherVec);
+                if (recalculated > 0.1) {
+                    similarities.add(new DomainSimilarity(id, recalculated));
+                }
+            }
+
+            return true;
+        });
+
+        if (similarities.size() > 128) {
+            similarities.sort(Comparator.comparing(DomainSimilarity::value));
+            similarities.subList(0, similarities.size() - 128).clear();
+        }
+
+
+        andThen.accept(new DomainSimilarities(domainId, similarities));
+    }
+
+}

code/processes/export-task-process/java/nu/marginalia/task/ExportTasksMain.java

@@ -0,0 +1,82 @@
+package nu.marginalia.task;
+
+import com.google.gson.Gson;
+import com.google.inject.Guice;
+import com.google.inject.Inject;
+import nu.marginalia.adjacencies.WebsiteAdjacenciesCalculator;
+import nu.marginalia.extractor.AtagExporter;
+import nu.marginalia.extractor.FeedExporter;
+import nu.marginalia.extractor.SampleDataExporter;
+import nu.marginalia.extractor.TermFrequencyExporter;
+import nu.marginalia.mq.MessageQueueFactory;
+import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.mqapi.tasks.ExportTaskRequest;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfigurationModule;
+import nu.marginalia.process.ProcessMainClass;
+import nu.marginalia.service.module.DatabaseModule;
+import nu.marginalia.service.module.ServiceDiscoveryModule;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ExportTasksMain extends ProcessMainClass {
+
+    private static final Logger logger = LoggerFactory.getLogger(ExportTasksMain.class);
+
+    private final AtagExporter atagExporter;
+    private final FeedExporter feedExporter;
+    private final SampleDataExporter sampleDataExporter;
+    private final TermFrequencyExporter termFrequencyExporter;
+    private final WebsiteAdjacenciesCalculator websiteAdjacenciesCalculator;
+
+    public static void main(String[] args) throws Exception {
+
+        var injector = Guice.createInjector(
+                new ServiceDiscoveryModule(),
+                new ProcessConfigurationModule("export-tasks"),
+                new DatabaseModule(false)
+        );
+
+        var exportTasks = injector.getInstance(ExportTasksMain.class);
+
+        Instructions<ExportTaskRequest> instructions = exportTasks.fetchInstructions(ExportTaskRequest.class);
+        try {
+            exportTasks.run(instructions.value());
+            instructions.ok();
+        }
+        catch (Exception e) {
+            logger.error("Error running export task", e);
+            instructions.err();
+        }
+
+    }
+
+    @Inject
+    public ExportTasksMain(MessageQueueFactory messageQueueFactory,
+                           ProcessConfiguration config,
+                           AtagExporter atagExporter,
+                           FeedExporter feedExporter,
+                           SampleDataExporter sampleDataExporter,
+                           TermFrequencyExporter termFrequencyExporter,
+                           Gson gson, WebsiteAdjacenciesCalculator websiteAdjacenciesCalculator)
+    {
+        super(messageQueueFactory, config, gson, ProcessInboxNames.EXPORT_TASK_INBOX);
+        this.atagExporter = atagExporter;
+        this.feedExporter = feedExporter;
+        this.sampleDataExporter = sampleDataExporter;
+        this.termFrequencyExporter = termFrequencyExporter;
+        this.websiteAdjacenciesCalculator = websiteAdjacenciesCalculator;
+    }
+
+    private void run(ExportTaskRequest request) throws Exception {
+        switch (request.task) {
+            case ATAGS: atagExporter.export(request.crawlId, request.destId); break;
+            case FEEDS: feedExporter.export(request.crawlId, request.destId); break;
+            case TERM_FREQ: termFrequencyExporter.export(request.crawlId, request.destId); break;
+            case SAMPLE_DATA: sampleDataExporter.export(request.crawlId, request.destId, request.size, request.name); break;
+            case ADJACENCIES: websiteAdjacenciesCalculator.export(); break;
+        }
+    }
+
+
+}

code/processes/index-constructor-process/build.gradle

@@ -22,7 +22,6 @@ apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
     implementation project(':code:processes:process-mq-api')
-    implementation project(':code:common:process')
     implementation project(':code:common:service')
     implementation project(':code:common:db')
     implementation project(':code:common:config')

code/processes/index-constructor-process/java/nu/marginalia/index/IndexConstructorMain.java

@@ -1,11 +1,8 @@
 package nu.marginalia.index;
 
-import com.google.gson.Gson;
 import com.google.inject.Guice;
 import com.google.inject.Inject;
 import nu.marginalia.IndexLocations;
-import nu.marginalia.ProcessConfiguration;
-import nu.marginalia.ProcessConfigurationModule;
 import nu.marginalia.index.construction.full.FullIndexConstructor;
 import nu.marginalia.index.construction.prio.PrioIndexConstructor;
 import nu.marginalia.index.domainrankings.DomainRankings;
@@ -15,13 +12,11 @@ import nu.marginalia.index.journal.IndexJournal;
 import nu.marginalia.model.gson.GsonFactory;
 import nu.marginalia.model.id.UrlIdCodec;
 import nu.marginalia.mq.MessageQueueFactory;
-import nu.marginalia.mq.MqMessage;
-import nu.marginalia.mq.inbox.MqInboxResponse;
-import nu.marginalia.mq.inbox.MqSingleShotInbox;
 import nu.marginalia.mqapi.index.CreateIndexRequest;
-import nu.marginalia.mqapi.index.IndexName;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfigurationModule;
+import nu.marginalia.process.ProcessMainClass;
 import nu.marginalia.process.control.ProcessHeartbeatImpl;
-import nu.marginalia.service.ProcessMainClass;
 import nu.marginalia.service.module.DatabaseModule;
 import nu.marginalia.storage.FileStorageService;
 import org.slf4j.Logger;
@@ -31,8 +26,6 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.sql.SQLException;
-import java.util.Optional;
-import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 
 import static nu.marginalia.mqapi.ProcessInboxNames.INDEX_CONSTRUCTOR_INBOX;
@@ -40,15 +33,12 @@ import static nu.marginalia.mqapi.ProcessInboxNames.INDEX_CONSTRUCTOR_INBOX;
 public class IndexConstructorMain extends ProcessMainClass {
     private final FileStorageService fileStorageService;
     private final ProcessHeartbeatImpl heartbeat;
-    private final MessageQueueFactory messageQueueFactory;
     private final DomainRankings domainRankings;
-    private final int node;
 
     private static final Logger logger = LoggerFactory.getLogger(IndexConstructorMain.class);
-    private final Gson gson = GsonFactory.get();
-    public static void main(String[] args) throws Exception {
-        CreateIndexInstructions instructions = null;
 
+    public static void main(String[] args) throws Exception {
+        Instructions<CreateIndexRequest> instructions = null;
         try {
             new org.mariadb.jdbc.Driver();
 
@@ -58,9 +48,8 @@ public class IndexConstructorMain extends ProcessMainClass {
                             new DatabaseModule(false))
                     .getInstance(IndexConstructorMain.class);
 
-            instructions = main.fetchInstructions();
+            instructions = main.fetchInstructions(CreateIndexRequest.class);
-
+            main.run(instructions.value());
-            main.run(instructions);
             instructions.ok();
         }
         catch (Exception ex) {
@@ -85,17 +74,17 @@ public class IndexConstructorMain extends ProcessMainClass {
                                 ProcessConfiguration processConfiguration,
                                 DomainRankings domainRankings) {
 
+        super(messageQueueFactory, processConfiguration, GsonFactory.get(), INDEX_CONSTRUCTOR_INBOX);
+
         this.fileStorageService = fileStorageService;
         this.heartbeat = heartbeat;
-        this.messageQueueFactory = messageQueueFactory;
         this.domainRankings = domainRankings;
-        this.node = processConfiguration.node();
     }
 
-    private void run(CreateIndexInstructions instructions) throws SQLException, IOException {
+    private void run(CreateIndexRequest instructions) throws SQLException, IOException {
         heartbeat.start();
 
-        switch (instructions.name) {
+        switch (instructions.indexName()) {
             case FORWARD      -> createForwardIndex();
             case REVERSE_FULL -> createFullReverseIndex();
             case REVERSE_PRIO -> createPrioReverseIndex();
@@ -171,52 +160,4 @@ public class IndexConstructorMain extends ProcessMainClass {
                 docId);
     }
 
-    private static class CreateIndexInstructions {
-
-        public final IndexName name;
-        private final MqSingleShotInbox inbox;
-        private final MqMessage message;
-
-        private CreateIndexInstructions(IndexName name, MqSingleShotInbox inbox, MqMessage message) {
-            this.name = name;
-            this.inbox = inbox;
-            this.message = message;
-        }
-
-        public void ok() {
-            inbox.sendResponse(message, MqInboxResponse.ok());
-        }
-        public void err() {
-            inbox.sendResponse(message, MqInboxResponse.err());
-        }
-    }
-
-    private CreateIndexInstructions fetchInstructions() throws Exception {
-
-        var inbox = messageQueueFactory.createSingleShotInbox(INDEX_CONSTRUCTOR_INBOX, node, UUID.randomUUID());
-
-        logger.info("Waiting for instructions");
-        var msgOpt = getMessage(inbox, CreateIndexRequest.class.getSimpleName());
-        var msg = msgOpt.orElseThrow(() -> new RuntimeException("No message received"));
-
-        var payload = gson.fromJson(msg.payload(), CreateIndexRequest.class);
-        var name = payload.indexName();
-
-        return new CreateIndexInstructions(name, inbox, msg);
-    }
-
-    private Optional<MqMessage> getMessage(MqSingleShotInbox inbox, String expectedFunction) throws SQLException, InterruptedException {
-        var opt = inbox.waitForMessage(30, TimeUnit.SECONDS);
-        if (opt.isPresent()) {
-            if (!opt.get().function().equals(expectedFunction)) {
-                throw new RuntimeException("Unexpected function: " + opt.get().function());
-            }
-            return opt;
-        }
-        else {
-            var stolenMessage = inbox.stealMessage(msg -> msg.function().equals(expectedFunction));
-            stolenMessage.ifPresent(mqMessage -> logger.info("Stole message {}", mqMessage));
-            return stolenMessage;
-        }
-    }
 }

code/processes/live-crawling-process/build.gradle

@@ -0,0 +1,77 @@
+plugins {
+    id 'java'
+
+    id 'application'
+    id 'jvm-test-suite'
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
+    }
+}
+
+application {
+    mainClass = 'nu.marginalia.livecrawler.LiveCrawlerMain'
+    applicationName = 'live-crawler-process'
+}
+
+tasks.distZip.enabled = false
+
+apply from: "$rootProject.projectDir/srcsets.gradle"
+
+dependencies {
+
+    implementation project(':code:common:db')
+    implementation project(':code:common:model')
+    implementation project(':code:common:config')
+    implementation project(':code:common:service')
+    implementation project(':code:common:linkdb')
+    implementation project(':code:functions:live-capture:api')
+    implementation project(':code:libraries:blocking-thread-pool')
+    implementation project(':code:index:api')
+    implementation project(':code:processes:process-mq-api')
+    implementation project(':code:libraries:message-queue')
+    implementation project(':code:libraries:language-processing')
+    implementation project(':code:libraries:easy-lsh')
+    implementation project(':code:processes:crawling-process')
+    implementation project(':code:processes:crawling-process:model')
+    implementation project(':code:processes:converting-process')
+    implementation project(':code:processes:loading-process')
+
+
+    implementation project(':code:processes:crawling-process:ft-crawl-blocklist')
+    implementation project(':code:processes:crawling-process:ft-link-parser')
+    implementation project(':code:processes:crawling-process:ft-content-type')
+    implementation project(':third-party:commons-codec')
+
+    implementation libs.bundles.slf4j
+
+    implementation libs.notnull
+    implementation libs.guava
+    implementation dependencies.create(libs.guice.get()) {
+        exclude group: 'com.google.guava'
+    }
+    implementation libs.gson
+    implementation libs.zstd
+    implementation libs.jwarc
+    implementation libs.crawlercommons
+    implementation libs.okhttp3
+    implementation libs.jsoup
+    implementation libs.opencsv
+    implementation libs.fastutil
+    implementation libs.sqlite
+
+    implementation libs.bundles.mariadb
+
+
+    testImplementation libs.bundles.slf4j.test
+    testImplementation libs.bundles.junit
+    testImplementation libs.mockito
+    testImplementation platform('org.testcontainers:testcontainers-bom:1.17.4')
+    testImplementation libs.commons.codec
+    testImplementation 'org.testcontainers:mariadb:1.17.4'
+    testImplementation 'org.testcontainers:junit-jupiter:1.17.4'
+    testImplementation project(':code:libraries:test-helpers')
+}
+

code/processes/live-crawling-process/java/nu/marginalia/livecrawler/LiveCrawlDataSet.java

@@ -0,0 +1,244 @@
+package nu.marginalia.livecrawler;
+
+import nu.marginalia.io.SerializableCrawlDataStream;
+import nu.marginalia.model.EdgeUrl;
+import nu.marginalia.model.crawldata.CrawledDocument;
+import nu.marginalia.model.crawldata.CrawledDomain;
+import nu.marginalia.model.crawldata.SerializableCrawlData;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
+
+/** Data access object for the live crawl database, a simple sqlite file */
+public class LiveCrawlDataSet implements AutoCloseable {
+    private final Connection connection;
+    private final Path basePath;
+
+    public LiveCrawlDataSet(Path basePath) throws SQLException {
+        this.basePath = basePath;
+        this.connection = DriverManager.getConnection("jdbc:sqlite:" + basePath.resolve("live-crawl-data.db"));
+        this.connection.setAutoCommit(true);
+
+        try (var stmt = connection.createStatement()) {
+            stmt.execute("CREATE TABLE IF NOT EXISTS urls (url TEXT PRIMARY KEY, domainId LONG, body BLOB, headers BLOB, ip TEXT, timestamp long)");
+            stmt.execute("CREATE INDEX IF NOT EXISTS domainIdIndex ON urls (domainId)");
+            stmt.execute("CREATE TABLE IF NOT EXISTS badUrls (url TEXT PRIMARY KEY, timestamp long)");
+        }
+    }
+
+    public Path createWorkDir() throws IOException {
+        return Files.createTempDirectory(basePath, "work");
+    }
+
+    /** Remove entries older than the given timestamp */
+    public void prune(Instant cutoff) throws SQLException {
+        try (var stmt = connection.prepareStatement("DELETE FROM urls WHERE timestamp < ?")) {
+            stmt.setLong(1, cutoff.toEpochMilli());
+            stmt.executeUpdate();
+        }
+
+        try (var stmt = connection.prepareStatement("DELETE FROM badUrls WHERE timestamp < ?")) {
+            stmt.setLong(1, cutoff.toEpochMilli());
+            stmt.executeUpdate();
+        }
+    }
+
+    /** Check if the given URL is already in the database */
+    public boolean hasUrl(String url) throws SQLException {
+        try (var stmt = connection.prepareStatement("""
+                SELECT 1 FROM urls WHERE urls.url = ?
+                UNION
+                SELECT 1 FROM badUrls WHERE badUrls.url = ?
+                """);
+        ) {
+            stmt.setString(1, url);
+            stmt.setString(2, url);
+
+            return stmt.executeQuery().next();
+        }
+    }
+
+    /** Check if the given URL is already in the database */
+    public boolean hasUrl(EdgeUrl url) throws SQLException {
+        return hasUrl(url.toString());
+    }
+
+    /** Save a document to the database */
+    public void saveDocument(int domainId, EdgeUrl url, String body, String headers, String ip) throws SQLException, IOException {
+        try (var stmt = connection.prepareStatement("""
+                INSERT OR REPLACE INTO urls (domainId, url, body, headers, ip, timestamp)
+                VALUES (?, ?, ?, ?, ?, ?)
+                """))
+        {
+            stmt.setInt(1, domainId);
+            stmt.setString(2, url.toString());
+            stmt.setBytes(3, compress(body));
+            stmt.setBytes(4, compress(headers));
+            stmt.setString(5, ip);
+            stmt.setLong(6, Instant.now().toEpochMilli());
+            stmt.executeUpdate();
+        }
+    }
+
+    /** Flag a URL as bad, i.e. it should not be revisited */
+    public void flagAsBad(EdgeUrl url) {
+        try (var stmt = connection.prepareStatement("""
+                INSERT OR IGNORE INTO badUrls (url, timestamp)
+                VALUES (?, ?)
+                """))
+        {
+            stmt.setString(1, url.toString());
+            stmt.setLong(2, Instant.now().toEpochMilli());
+            stmt.executeUpdate();
+        }
+        catch (SQLException ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+
+    private byte[] compress(String data) throws IOException {
+        // gzip compression
+        try (var bos = new ByteArrayOutputStream();
+             var gzip = new GZIPOutputStream(bos))
+        {
+            gzip.write(data.getBytes());
+            gzip.finish();
+            return bos.toByteArray();
+        }
+    }
+
+    private String decompress(byte[] data) {
+        // gzip decompression
+        try (var bis = new ByteArrayInputStream(data);
+             var gzip = new GZIPInputStream(bis))
+        {
+            return new String(gzip.readAllBytes());
+        }
+        catch (IOException ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+
+    /** Get the data in the database as a list of SerializableCrawlDataStream's, the
+     * format expected by the converter code.
+     */
+    public Collection<SerializableCrawlDataStream> getDataStreams() throws SQLException {
+        List<Integer> domainIds = new ArrayList<>();
+
+        try (var stmt = connection.createStatement()) {
+            var rs = stmt.executeQuery("SELECT DISTINCT domainId FROM urls");
+            while (rs.next()) {
+                domainIds.add(rs.getInt(1));
+            }
+        }
+
+        List<SerializableCrawlDataStream> streams = new ArrayList<>();
+        for (var domainId : domainIds) {
+            streams.add(new WrappedDataStream(domainId));
+        }
+        return streams;
+    }
+
+    /** Wraps the data in the database as a SerializableCrawlDataStream.
+     * <p></p>
+     * This is a bit clunky as the interface is built intending the data
+     * to be a stream of objects being read from Parquet.
+     * */
+    private class WrappedDataStream implements SerializableCrawlDataStream {
+        private final int domainId;
+        private ArrayList<SerializableCrawlData> dataStack;
+
+        WrappedDataStream(int domainId) {
+            this.domainId = domainId;
+            this.dataStack = null;
+        }
+
+        /** Lazy initialization for the data being iterated over */
+        private void query() {
+            try (var stmt = connection.prepareStatement("""
+                                                SELECT url, body, headers, ip, timestamp
+                                                FROM urls
+                                                WHERE domainId = ?
+                                                """)) {
+                stmt.setInt(1, domainId);
+                var rs = stmt.executeQuery();
+                dataStack = new ArrayList<>();
+                while (rs.next()) {
+                    String url = rs.getString("url");
+                    String body = decompress(rs.getBytes("body"));
+                    String headers = decompress(rs.getBytes("headers"));
+
+                    dataStack.add(new CrawledDocument(
+                            "LIVE",
+                            url,
+                            "text/html",
+                            Instant.ofEpochMilli(rs.getLong("timestamp")).toString(),
+                            200,
+                            "OK",
+                            "",
+                            headers,
+                            body,
+                            false,
+                            "",
+                            ""
+                    ));
+                }
+                var last = dataStack.getLast();
+                var domain = new CrawledDomain(
+                        last.getDomain(),
+                        null,
+                        "OK",
+                        "",
+                        "0.0.0.0",
+                        List.of(),
+                        List.of()
+                );
+
+                // Add the domain as the last element, which will be the first
+                // element popped from the list
+                dataStack.addLast(domain);
+            }
+            catch (SQLException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+
+        @Override
+        public SerializableCrawlData next() throws IOException {
+            if (dataStack == null)
+                query();
+
+            return dataStack.removeLast();
+        }
+
+        @Override
+        public boolean hasNext() throws IOException {
+            if (dataStack == null) {
+                query();
+            }
+            return !dataStack.isEmpty();
+        }
+
+        @Override
+        public void close() throws Exception {
+            dataStack.clear();
+        }
+    }
+
+    @Override
+    public void close() throws Exception {
+        connection.close();
+    }
+}

code/processes/live-crawling-process/java/nu/marginalia/livecrawler/LiveCrawlerMain.java

@@ -0,0 +1,224 @@
+package nu.marginalia.livecrawler;
+
+import com.google.gson.Gson;
+import com.google.inject.Guice;
+import com.google.inject.Inject;
+import com.google.inject.Injector;
+import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.WmsaHome;
+import nu.marginalia.api.feeds.FeedsClient;
+import nu.marginalia.converting.ConverterModule;
+import nu.marginalia.converting.processor.DomainProcessor;
+import nu.marginalia.converting.writer.ConverterBatchWriter;
+import nu.marginalia.db.DbDomainQueries;
+import nu.marginalia.db.DomainBlacklist;
+import nu.marginalia.io.SerializableCrawlDataStream;
+import nu.marginalia.loading.LoaderInputData;
+import nu.marginalia.loading.documents.DocumentLoaderService;
+import nu.marginalia.loading.documents.KeywordLoaderService;
+import nu.marginalia.loading.domains.DbDomainIdRegistry;
+import nu.marginalia.loading.domains.DomainIdRegistry;
+import nu.marginalia.model.EdgeDomain;
+import nu.marginalia.mq.MessageQueueFactory;
+import nu.marginalia.mqapi.crawling.LiveCrawlRequest;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfigurationModule;
+import nu.marginalia.process.ProcessMainClass;
+import nu.marginalia.process.control.ProcessHeartbeat;
+import nu.marginalia.service.module.DatabaseModule;
+import nu.marginalia.service.module.ServiceDiscoveryModule;
+import nu.marginalia.storage.FileStorageService;
+import nu.marginalia.storage.model.FileStorageBaseType;
+import org.apache.commons.io.FileUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.Security;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static nu.marginalia.mqapi.ProcessInboxNames.LIVE_CRAWLER_INBOX;
+
+public class LiveCrawlerMain extends ProcessMainClass {
+
+    private static final Logger logger =
+            LoggerFactory.getLogger(LiveCrawlerMain.class);
+
+    private final FeedsClient feedsClient;
+    private final ProcessHeartbeat heartbeat;
+    private final DbDomainQueries domainQueries;
+    private final DomainBlacklist domainBlacklist;
+    private final DomainProcessor domainProcessor;
+    private final FileStorageService fileStorageService;
+    private final KeywordLoaderService keywordLoaderService;
+    private final DocumentLoaderService documentLoaderService;
+    private final HikariDataSource dataSource;
+
+    @Inject
+    public LiveCrawlerMain(FeedsClient feedsClient,
+                           Gson gson,
+                           ProcessConfiguration config,
+                           ProcessHeartbeat heartbeat,
+                           DbDomainQueries domainQueries,
+                           DomainBlacklist domainBlacklist,
+                           MessageQueueFactory messageQueueFactory,
+                           DomainProcessor domainProcessor,
+                           FileStorageService fileStorageService,
+                           KeywordLoaderService keywordLoaderService,
+                           DocumentLoaderService documentLoaderService, HikariDataSource dataSource)
+            throws Exception
+    {
+        super(messageQueueFactory, config, gson, LIVE_CRAWLER_INBOX);
+
+        this.feedsClient = feedsClient;
+        this.heartbeat = heartbeat;
+        this.domainQueries = domainQueries;
+        this.domainBlacklist = domainBlacklist;
+        this.domainProcessor = domainProcessor;
+        this.fileStorageService = fileStorageService;
+        this.keywordLoaderService = keywordLoaderService;
+        this.documentLoaderService = documentLoaderService;
+        this.dataSource = dataSource;
+
+        domainBlacklist.waitUntilLoaded();
+    }
+
+    public static void main(String... args) throws Exception {
+
+        // Prevent Java from caching DNS lookups forever (filling up the system RAM as a result)
+        Security.setProperty("networkaddress.cache.ttl", "3600");
+
+        // This must run *early*
+        System.setProperty("http.agent", WmsaHome.getUserAgent().uaString());
+
+        // If these aren't set properly, the JVM will hang forever on some requests
+        System.setProperty("sun.net.client.defaultConnectTimeout", "30000");
+        System.setProperty("sun.net.client.defaultReadTimeout", "30000");
+
+        // We don't want to use too much memory caching sessions for https
+        System.setProperty("javax.net.ssl.sessionCacheSize", "2048");
+
+        try {
+            Injector injector = Guice.createInjector(
+                    new LiveCrawlerModule(),
+                    new ProcessConfigurationModule("crawler"),
+                    new ConverterModule(),
+                    new ServiceDiscoveryModule(),
+                    new DatabaseModule(false)
+            );
+
+            var crawler = injector.getInstance(LiveCrawlerMain.class);
+            Instructions<LiveCrawlRequest> instructions = crawler.fetchInstructions(LiveCrawlRequest.class);
+
+            try{
+                crawler.run();
+                instructions.ok();
+            } catch (Exception e) {
+                instructions.err();
+                throw e;
+            }
+
+        } catch (Exception e) {
+            logger.error("LiveCrawler failed", e);
+
+            System.exit(1);
+        }
+        System.exit(0);
+    }
+
+    enum LiveCrawlState {
+        PRUNE_DB,
+        FETCH_LINKS,
+        CRAWLING,
+        PROCESSING,
+        LOADING,
+        CONSTRUCTING,
+        DONE
+    }
+
+    private void run() throws Exception {
+        Path basePath = fileStorageService.getStorageBase(FileStorageBaseType.STORAGE).asPath().resolve("live-crawl-data");
+
+        if (!Files.isDirectory(basePath)) {
+            Files.createDirectories(basePath);
+        }
+
+        run(basePath);
+    }
+
+    private void run(Path basePath) throws Exception {
+        try (var processHeartbeat = heartbeat.createProcessTaskHeartbeat(LiveCrawlState.class, "LiveCrawler");
+             LiveCrawlDataSet dataSet = new LiveCrawlDataSet(basePath))
+        {
+            final Instant cutoff = Instant.now().minus(60, ChronoUnit.DAYS);
+
+            processHeartbeat.progress(LiveCrawlState.FETCH_LINKS);
+
+            Map<String, List<String>> urlsPerDomain = new HashMap<>(10_000);
+            feedsClient.getUpdatedDomains(cutoff, urlsPerDomain::put);
+
+            logger.info("Fetched data for {} domains", urlsPerDomain.size());
+
+            processHeartbeat.progress(LiveCrawlState.PRUNE_DB);
+
+            // Remove data that is too old
+            dataSet.prune(cutoff);
+
+            processHeartbeat.progress(LiveCrawlState.CRAWLING);
+
+            try (SimpleLinkScraper fetcher = new SimpleLinkScraper(dataSet, domainQueries, domainBlacklist);
+                 var hb = heartbeat.createAdHocTaskHeartbeat("Live Crawling"))
+            {
+                for (Map.Entry<String, List<String>> entry : hb.wrap("Fetching", urlsPerDomain.entrySet())) {
+                    EdgeDomain domain = new EdgeDomain(entry.getKey());
+                    List<String> urls = entry.getValue();
+
+                    fetcher.scheduleRetrieval(domain, urls);
+                }
+            }
+
+            Path tempPath = dataSet.createWorkDir();
+
+            try {
+                processHeartbeat.progress(LiveCrawlState.PROCESSING);
+
+                try (var hb = heartbeat.createAdHocTaskHeartbeat("Processing");
+                     var writer = new ConverterBatchWriter(tempPath, 0)
+                ) {
+                    // Offset the documents' ordinals toward the upper range, to avoid an ID collisions with the
+                    // main indexes (the maximum permissible for doc ordinal is  value is 67_108_863, so this
+                    // leaves us with a lot of headroom still)
+                    writer.setOrdinalOffset(67_000_000);
+
+                    for (SerializableCrawlDataStream stream : hb.wrap("Processing", dataSet.getDataStreams())) {
+                        writer.write(domainProcessor.sideloadProcessing(stream, 0));
+                    }
+                }
+
+                processHeartbeat.progress(LiveCrawlState.LOADING);
+
+                LoaderInputData lid = new LoaderInputData(tempPath, 1);
+
+                DomainIdRegistry domainIdRegistry = new DbDomainIdRegistry(dataSource);
+
+                keywordLoaderService.loadKeywords(domainIdRegistry, heartbeat, lid);
+                documentLoaderService.loadDocuments(domainIdRegistry, heartbeat, lid);
+
+                keywordLoaderService.close();
+
+            } finally {
+                FileUtils.deleteDirectory(tempPath.toFile());
+            }
+
+            // Construct the index
+
+            processHeartbeat.progress(LiveCrawlState.DONE);
+        }
+    }
+
+}

code/processes/live-crawling-process/java/nu/marginalia/livecrawler/LiveCrawlerModule.java

@@ -0,0 +1,49 @@
+package nu.marginalia.livecrawler;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Inject;
+import com.google.inject.Provides;
+import com.google.inject.Singleton;
+import com.google.inject.name.Names;
+import nu.marginalia.IndexLocations;
+import nu.marginalia.UserAgent;
+import nu.marginalia.WmsaHome;
+import nu.marginalia.linkdb.docs.DocumentDbWriter;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.service.ServiceId;
+import nu.marginalia.service.module.ServiceConfiguration;
+import nu.marginalia.storage.FileStorageService;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.sql.SQLException;
+import java.util.UUID;
+
+import static nu.marginalia.linkdb.LinkdbFileNames.DOCDB_FILE_NAME;
+
+public class LiveCrawlerModule extends AbstractModule {
+
+    public void configure() {
+        bind(UserAgent.class).toInstance(WmsaHome.getUserAgent());
+        bind(Path.class).annotatedWith(Names.named("local-index-path")).toInstance(Path.of(System.getProperty("local-index-path", "/vol")));
+    }
+
+    @Inject
+    @Provides @Singleton
+    private DocumentDbWriter createLinkdbWriter(FileStorageService service) throws SQLException, IOException {
+        // Migrate
+        Path dbPath = IndexLocations.getLinkdbWritePath(service).resolve(DOCDB_FILE_NAME);
+
+        if (Files.exists(dbPath)) {
+            Files.delete(dbPath);
+        }
+        return new DocumentDbWriter(dbPath);
+    }
+
+    @Singleton
+    @Provides
+    public ServiceConfiguration provideServiceConfiguration(ProcessConfiguration processConfiguration) {
+        return new ServiceConfiguration(ServiceId.NOT_A_SERVICE, processConfiguration.node(), null, null, -1, UUID.randomUUID());
+    }
+}

code/processes/live-crawling-process/java/nu/marginalia/livecrawler/SimpleLinkScraper.java

@@ -0,0 +1,217 @@
+package nu.marginalia.livecrawler;
+
+import crawlercommons.robots.SimpleRobotRules;
+import crawlercommons.robots.SimpleRobotRulesParser;
+import nu.marginalia.WmsaHome;
+import nu.marginalia.crawl.fetcher.HttpFetcherImpl;
+import nu.marginalia.crawl.retreival.CrawlDelayTimer;
+import nu.marginalia.db.DbDomainQueries;
+import nu.marginalia.db.DomainBlacklist;
+import nu.marginalia.link_parser.LinkParser;
+import nu.marginalia.model.EdgeDomain;
+import nu.marginalia.model.EdgeUrl;
+import nu.marginalia.util.SimpleBlockingThreadPool;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.annotation.Nullable;
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.net.http.HttpClient;
+import java.net.http.HttpHeaders;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.Duration;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ThreadLocalRandom;
+import java.util.concurrent.TimeUnit;
+
+/** A simple link scraper that fetches URLs and stores them in a database,
+ * with no concept of a crawl frontier, WARC output, or other advanced features
+ */
+public class SimpleLinkScraper implements AutoCloseable {
+    private static final Logger logger = LoggerFactory.getLogger(SimpleLinkScraper.class);
+
+    private final SimpleBlockingThreadPool pool = new SimpleBlockingThreadPool("LiveCrawler", 32, 10);
+    private final LinkParser lp = new LinkParser();
+    private final LiveCrawlDataSet dataSet;
+    private final DbDomainQueries domainQueries;
+    private final DomainBlacklist domainBlacklist;
+    private final Duration connectTimeout = Duration.ofSeconds(10);
+    private final Duration readTimeout = Duration.ofSeconds(10);
+
+    public SimpleLinkScraper(LiveCrawlDataSet dataSet,
+                             DbDomainQueries domainQueries,
+                             DomainBlacklist domainBlacklist) {
+        this.dataSet = dataSet;
+        this.domainQueries = domainQueries;
+        this.domainBlacklist = domainBlacklist;
+    }
+
+    public void scheduleRetrieval(EdgeDomain domain, List<String> urls) {
+
+        var id = domainQueries.tryGetDomainId(domain);
+        if (id.isEmpty() || domainBlacklist.isBlacklisted(id.getAsInt())) {
+            return;
+        }
+
+        pool.submitQuietly(() -> retrieveNow(domain, id.getAsInt(), urls));
+    }
+
+    public void retrieveNow(EdgeDomain domain, int domainId, List<String> urls) throws Exception {
+        try (HttpClient client = HttpClient
+                .newBuilder()
+                .connectTimeout(connectTimeout)
+                .followRedirects(HttpClient.Redirect.NEVER)
+                .version(HttpClient.Version.HTTP_2)
+                .build()) {
+
+            EdgeUrl rootUrl = domain.toRootUrlHttps();
+
+            SimpleRobotRules rules = fetchRobotsRules(rootUrl, client);
+
+            if (rules == null) { // I/O error fetching robots.txt
+                // If we can't fetch the robots.txt,
+                for (var url : urls) {
+                    lp.parseLink(rootUrl, url).ifPresent(this::maybeFlagAsBad);
+                }
+                return;
+            }
+
+            CrawlDelayTimer timer = new CrawlDelayTimer(rules.getCrawlDelay());
+
+            for (var url : urls) {
+                Optional<EdgeUrl> optParsedUrl = lp.parseLink(rootUrl, url);
+                if (optParsedUrl.isEmpty()) {
+                    continue;
+                }
+                if (dataSet.hasUrl(optParsedUrl.get())) {
+                    continue;
+                }
+
+                EdgeUrl parsedUrl = optParsedUrl.get();
+                if (!rules.isAllowed(url)) {
+                    continue;
+                }
+
+                switch (fetchUrl(domainId, parsedUrl, timer, client)) {
+                    case FetchResult.Success(int id, EdgeUrl docUrl, String body, String headers)
+                            -> dataSet.saveDocument(id, docUrl, body, headers, "");
+                    case FetchResult.Error(EdgeUrl docUrl) -> maybeFlagAsBad(docUrl);
+                }
+            }
+        }
+    }
+
+    private void maybeFlagAsBad(EdgeUrl url) {
+        // To give bad URLs a chance to be re-fetched, we only flag them as bad
+        // with a 20% probability.  This will prevent the same bad URL being
+        // re-fetched over and over again for several months, but still allow
+        // us to *mostly* re-fetch it if it was just a transient error.
+
+        // There's of course the chance we immediately flag it as bad on an
+        // unlucky roll, but you know, that's xcom baby
+
+        if (ThreadLocalRandom.current().nextDouble(0, 1) < 0.2) {
+            dataSet.flagAsBad(url);
+        }
+    }
+
+    @Nullable
+    private SimpleRobotRules fetchRobotsRules(EdgeUrl rootUrl, HttpClient client) throws IOException, InterruptedException, URISyntaxException {
+        var robotsRequest = HttpRequest.newBuilder(rootUrl.withPathAndParam("/robots.txt", null).asURI())
+                .GET()
+                .header("User-Agent", WmsaHome.getUserAgent().uaString())
+                .timeout(readTimeout);
+
+        // Fetch the robots.txt
+
+        try {
+            SimpleRobotRulesParser parser = new SimpleRobotRulesParser();
+            HttpResponse<byte[]> robotsTxt = client.send(robotsRequest.build(), HttpResponse.BodyHandlers.ofByteArray());
+            if (robotsTxt.statusCode() == 200) {
+                return parser.parseContent(rootUrl.toString(),
+                        robotsTxt.body(),
+                        robotsTxt.headers().firstValue("Content-Type").orElse("text/plain"),
+                        WmsaHome.getUserAgent().uaIdentifier());
+            }
+            else if (robotsTxt.statusCode() == 404) {
+                return new SimpleRobotRules(SimpleRobotRules.RobotRulesMode.ALLOW_ALL);
+            }
+        }
+        catch (IOException ex) {
+            logger.error("Error fetching robots.txt for {}: {} {}", rootUrl, ex.getClass().getSimpleName(), ex.getMessage());
+        }
+        return null;
+    }
+
+    /** Fetch a URL and store it in the database
+     */
+    private FetchResult fetchUrl(int domainId, EdgeUrl parsedUrl, CrawlDelayTimer timer, HttpClient client) throws Exception {
+
+        timer.waitFetchDelay();
+
+        HttpRequest request = HttpRequest.newBuilder(parsedUrl.asURI())
+                .GET()
+                .header("User-Agent", WmsaHome.getUserAgent().uaString())
+                .header("Accept", "text/html")
+                .timeout(readTimeout)
+                .build();
+
+        try {
+            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+            // Handle rate limiting by waiting and retrying once
+            if (response.statusCode() == 429) {
+                timer.waitRetryDelay(new HttpFetcherImpl.RateLimitException(
+                        response.headers().firstValue("Retry-After").orElse("5")
+                ));
+                response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            }
+
+            String contentType = response.headers().firstValue("Content-Type").orElse("").toLowerCase();
+
+            if (response.statusCode() == 200) {
+                if (!contentType.toLowerCase().startsWith("text/html")) {
+                    return new FetchResult.Error(parsedUrl);
+                }
+
+                String body = response.body();
+                if (body.length() > 1024 * 1024) {
+                    return new FetchResult.Error(parsedUrl);
+                }
+
+                return new FetchResult.Success(domainId, parsedUrl, body, headersToString(response.headers()));
+            }
+        }
+        catch (IOException ex) {
+            // We don't want a full stack trace on every error, as it's quite common and very noisy
+            logger.error("Error fetching URL {}: {} {}", parsedUrl, ex.getClass().getSimpleName(), ex.getMessage());
+        }
+
+        return new FetchResult.Error(parsedUrl);
+    }
+
+    sealed interface FetchResult {
+        record Success(int domainId, EdgeUrl url, String body, String headers) implements FetchResult {}
+        record Error(EdgeUrl url) implements FetchResult {}
+    }
+
+    private String headersToString(HttpHeaders headers) {
+        StringBuilder headersStr = new StringBuilder();
+        headers.map().forEach((k, v) -> {
+            headersStr.append(k).append(": ").append(v).append("\n");
+        });
+        return headersStr.toString();
+    }
+
+    @Override
+    public void close() throws Exception {
+        pool.shutDown();
+        for (int i = 0; i < 4; i++) {
+            pool.awaitTermination(1, TimeUnit.HOURS);
+        }
+        pool.shutDownNow();
+    }
+}

code/processes/live-crawling-process/test/nu/marginalia/livecrawler/LiveCrawlDataSetTest.java

@@ -0,0 +1,92 @@
+package nu.marginalia.livecrawler;
+
+import nu.marginalia.model.EdgeUrl;
+import nu.marginalia.model.crawldata.CrawledDocument;
+import nu.marginalia.model.crawldata.CrawledDomain;
+import nu.marginalia.model.crawldata.SerializableCrawlData;
+import org.apache.commons.io.FileUtils;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+public class LiveCrawlDataSetTest {
+
+    @Test
+    public void testGetDataSet() throws Exception {
+        Path tempDir = Files.createTempDirectory("live-crawl-data-set-test");
+        try (LiveCrawlDataSet dataSet = new LiveCrawlDataSet(tempDir)) {
+
+            Assertions.assertFalse(dataSet.hasUrl("https://www.example.com/"));
+            dataSet.saveDocument(
+                    1,
+                    new EdgeUrl("https://www.example.com/"),
+                    "test",
+                    "test",
+                    "test"
+            );
+            Assertions.assertTrue(dataSet.hasUrl("https://www.example.com/"));
+
+            var streams = dataSet.getDataStreams();
+            Assertions.assertEquals(1, streams.size());
+            var stream = streams.iterator().next();
+
+            List<SerializableCrawlData> data = new ArrayList<>();
+            while (stream.hasNext()) {
+                data.add(stream.next());
+            }
+
+            int dataCount = 0;
+            int domainCount = 0;
+
+            for (var item : data) {
+                switch (item) {
+                    case CrawledDomain domain -> {
+                        domainCount++;
+                        Assertions.assertEquals("www.example.com", domain.getDomain());
+                    }
+                    case CrawledDocument document -> {
+                        dataCount++;
+                        Assertions.assertEquals("https://www.example.com/", document.url);
+                        Assertions.assertEquals("test", document.documentBody);
+                    }
+                }
+            }
+
+            Assertions.assertEquals(1, dataCount);
+            Assertions.assertEquals(1, domainCount);
+        }
+        finally {
+            FileUtils.deleteDirectory(tempDir.toFile());
+        }
+    }
+
+    @Test
+    public void testHasUrl() throws Exception {
+        Path tempDir = Files.createTempDirectory("live-crawl-data-set-test");
+        try (LiveCrawlDataSet dataSet = new LiveCrawlDataSet(tempDir)) {
+            Assertions.assertFalse(dataSet.hasUrl("https://www.example.com/"));
+            dataSet.saveDocument(
+                    1,
+                    new EdgeUrl("https://www.example.com/saved"),
+                    "test",
+                    "test",
+                    "test"
+            );
+            Assertions.assertTrue(dataSet.hasUrl("https://www.example.com/saved"));
+
+            dataSet.flagAsBad(new EdgeUrl("https://www.example.com/bad"));
+
+            Assertions.assertTrue(dataSet.hasUrl("https://www.example.com/bad"));
+
+            Assertions.assertFalse(dataSet.hasUrl("https://www.example.com/notPresent"));
+        }
+        finally {
+            FileUtils.deleteDirectory(tempDir.toFile());
+        }
+    }
+
+}