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feat: add consumeDelaySeconds for time-based consumer delay #458

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feat: add consumeDelaySeconds for time-based consumer delay #458

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8 changes: 8 additions & 0 deletions benchmark-framework/src/main/java/io/openmessaging/benchmark/Workload.java
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Original file line number Diff line number Diff line change
Expand Up @@ -83,4 +83,12 @@ public boolean usesDistribution() {
public int testDurationMinutes;

public int warmupDurationMinutes = 1;

/**
* If > 0, after warmup the consumers are paused for exactly this many seconds before being
* automatically resumed and the measurement window starts. Use this when you want time-based
* backlog accumulation (e.g. to ensure data is offloaded to tiered storage before consumers
* start draining), as an alternative to size-based {@link #consumerBacklogSizeGB}.
*/
public int consumeDelaySeconds = 0;
}
18 changes: 18 additions & 0 deletions benchmark-framework/src/main/java/io/openmessaging/benchmark/WorkloadGenerator.java
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Expand Up @@ -164,6 +164,7 @@ public TestResult run() throws Exception {
}

worker.resetStats();
applyConsumeDelayIfConfigured();
log.info("----- Starting benchmark traffic ({}m)------", workload.testDurationMinutes);

TestResult result = printAndCollectStats(workload.testDurationMinutes, TimeUnit.MINUTES);
Expand Down Expand Up @@ -253,6 +254,23 @@ public void close() throws Exception {
executor.shutdownNow();
}

private void applyConsumeDelayIfConfigured() throws IOException {
if (workload.consumeDelaySeconds <= 0) {
return;
}
worker.pauseConsumers();
log.info("----- Delaying consumption for {}s before measurement window -----",
workload.consumeDelaySeconds);
try {
Thread.sleep(workload.consumeDelaySeconds * 1000L);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException(e);
}
worker.resumeConsumers();
log.info("----- Consumers resumed after {}s delay -----", workload.consumeDelaySeconds);
}

private void createConsumers(List<String> topics) throws IOException {
ConsumerAssignment consumerAssignment = new ConsumerAssignment();

Expand Down