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improve: lazy init workflow executor #2266

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Merged
merged 4 commits into from
Mar 7, 2024
Merged

improve: lazy init workflow executor #2266

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b356d0b
improve: lazy init workflow executor
csviri Mar 7, 2024
5ddb46d
stop fix
csviri Mar 7, 2024
1bc4dd8
refactor: clean up
metacosm Mar 7, 2024
1559d7b
fix
csviri Mar 7, 2024
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20 changes: 16 additions & 4 deletions ...ork-core/src/main/java/io/javaoperatorsdk/operator/api/config/ExecutorServiceManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ public class ExecutorServiceManager {
private ExecutorService workflowExecutor;
private ExecutorService cachingExecutorService;
private boolean started;
private ConfigurationService configurationService;

ExecutorServiceManager(ConfigurationService configurationService) {
start(configurationService);
Expand Down Expand Up @@ -95,30 +96,37 @@ public ExecutorService reconcileExecutorService() {
}

public ExecutorService workflowExecutorService() {
lazyInitWorkflowExecutorService();
return workflowExecutor;
}

private synchronized void lazyInitWorkflowExecutorService() {
if (workflowExecutor == null) {
workflowExecutor =
new InstrumentedExecutorService(configurationService.getWorkflowExecutorService());
}
}

public ExecutorService cachingExecutorService() {
return cachingExecutorService;
}

public void start(ConfigurationService configurationService) {
if (!started) {
this.configurationService = configurationService; // used to lazy init workflow executor
this.cachingExecutorService = Executors.newCachedThreadPool();
this.executor = new InstrumentedExecutorService(configurationService.getExecutorService());
this.workflowExecutor =
new InstrumentedExecutorService(configurationService.getWorkflowExecutorService());
started = true;
}
}

public void stop(Duration gracefulShutdownTimeout) {
try {
var parallelExec = Executors.newFixedThreadPool(3);
try (var parallelExec = Executors.newFixedThreadPool(3)) {
log.debug("Closing executor");
parallelExec.invokeAll(List.of(shutdown(executor, gracefulShutdownTimeout),
shutdown(workflowExecutor, gracefulShutdownTimeout),
shutdown(cachingExecutorService, gracefulShutdownTimeout)));
workflowExecutor = null;
parallelExec.shutdownNow();
started = false;
} catch (InterruptedException e) {
Expand All @@ -130,6 +138,10 @@ public void stop(Duration gracefulShutdownTimeout) {
private static Callable<Void> shutdown(ExecutorService executorService,
Duration gracefulShutdownTimeout) {
return () -> {
// workflow executor can be null
if (executorService == null) {
return null;
}
executorService.shutdown();
if (!executorService.awaitTermination(gracefulShutdownTimeout.toMillis(),
TimeUnit.MILLISECONDS)) {
Expand Down