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Clean up ProcessService

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This commit is contained in:
Viktor Lofgren 2023-07-31 10:56:16 +02:00
parent 37c4cc68ed
commit 12bd74d4f3
1 changed files with 37 additions and 25 deletions
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62
code/services-satellite/control-service/src/main/java/nu/marginalia/control/svc/ProcessService.java
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@ -14,9 +14,7 @@ import java.io.BufferedReader;
import java.io.InputStreamReader; import java.io.InputStreamReader;
import java.nio.file.Files; import java.nio.file.Files;
import java.nio.file.Path; import java.nio.file.Path;
import java.util.Arrays; import java.util.*;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentHashMap;
@Singleton @Singleton
@ -56,14 +54,9 @@ public class ProcessService {
} }
public boolean trigger(ProcessId processId, String... parameters) throws Exception { public boolean trigger(ProcessId processId, String... parameters) throws Exception {
String processPath = processPath(processId); final String processPath = distPath.resolve(processId.path).toString();
String[] args = new String[parameters.length + 1]; final String[] env = createEnvironmentVariables();
final String[] args = createCommandArguments(processPath, parameters);
args[0] = processPath;
for (int i = 0; i < parameters.length; i++)
args[i+1] = parameters[i];
String[] env = env();
Process process; Process process;
@ -72,8 +65,8 @@ public class ProcessService {
return false; return false;
} }
logger.info("Starting process: {}: {} // {}", processId, Arrays.toString(args), Arrays.toString(env));
logger.info("Starting process: {}", processId + ": " + Arrays.toString(args) + " // " + Arrays.toString(env));
synchronized (processes) { synchronized (processes) {
if (processes.containsKey(processId)) return false; if (processes.containsKey(processId)) return false;
process = Runtime.getRuntime().exec(args, env); process = Runtime.getRuntime().exec(args, env);
@ -104,8 +97,13 @@ public class ProcessService {
eventLog.logEvent("PROCESS-EXIT", processId.toString()); eventLog.logEvent("PROCESS-EXIT", processId.toString());
processes.remove(processId); processes.remove(processId);
} }
}
private String[] createCommandArguments(String processPath, String[] parameters) {
final String[] args = new String[parameters.length + 1];
args[0] = processPath;
System.arraycopy(parameters, 0, args, 1, parameters.length);
return args;
} }
public boolean isRunning(ProcessId processId) { public boolean isRunning(ProcessId processId) {
@ -122,24 +120,38 @@ public class ProcessService {
return true; return true;
} }
private String processPath(ProcessId id) { /** These environment variables are propagated from the parent process to the child process,
return distPath.resolve(id.path).toString(); * along with WMSA_HOME, but it has special logic */
} private final List<String> propagatedEnvironmentVariables = List.of(
"JAVA_HOME",
"CONVERTER_PROCESS_OPTS",
"LOADER_PROCESS_OPTS",
"CRAWLER_PROCESS_OPTS");
private String[] env() { private String[] createEnvironmentVariables() {
List<String> opts = new ArrayList<>();
Map<String, String> opts = new HashMap<>();
String WMSA_HOME = System.getenv("WMSA_HOME"); String WMSA_HOME = System.getenv("WMSA_HOME");
if (WMSA_HOME == null || WMSA_HOME.isBlank()) { if (WMSA_HOME == null || WMSA_HOME.isBlank()) {
WMSA_HOME = "/var/lib/wmsa"; WMSA_HOME = "/var/lib/wmsa";
} }
opts.put("WMSA_HOME", WMSA_HOME);
opts.put("JAVA_HOME", System.getenv("JAVA_HOME"));
opts.put("JAVA_OPTS", "");
opts.put("CONVERTER_PROCESS_OPTS", System.getenv("CONVERTER_PROCESS_OPTS"));
opts.put("LOADER_PROCESS_OPTS", System.getenv("LOADER_PROCESS_OPTS"));
opts.put("CRAWLER_PROCESS_OPTS", System.getenv("CRAWLER_PROCESS_OPTS"));
return opts.entrySet().stream().map(e -> e.getKey() + "=" + e.getValue()).toArray(String[]::new); opts.add(env2str("WMSA_HOME", WMSA_HOME));
opts.add(env2str("JAVA_OPTS", "")); // We explicitly empty this to avoid inheriting the parent process' JAVA_OPTS
for (String envKey : propagatedEnvironmentVariables) {
String envValue = System.getenv(envKey);
if (envValue != null && !envValue.isBlank()) {
opts.add(env2str(envKey, envValue));
}
}
return opts.toArray(String[]::new);
} }
private String env2str(String key, String val) {
return key + "=" + val;
}
} }