aho135 commented on code in PR #18598:
URL: https://github.com/apache/druid/pull/18598#discussion_r2412106183
##########
extensions-contrib/prometheus-emitter/src/test/java/org/apache/druid/emitter/prometheus/PrometheusEmitterTest.java:
##########
@@ -430,4 +431,78 @@ public void testEmitterWithoutDeleteOnShutdown() throws
IOException
EasyMock.verify(mockPushGateway);
}
+
+ @Test
+ public void testMetricTtlExpiration()
+ {
+ int flushPeriod = 3;
+ PrometheusEmitterConfig config = new
PrometheusEmitterConfig(PrometheusEmitterConfig.Strategy.exporter, "test",
null, 0, null, false, true, flushPeriod, null, false, null);
+ PrometheusEmitter emitter = new PrometheusEmitter(config);
+ emitter.start();
+
+ ServiceMetricEvent event = ServiceMetricEvent.builder()
+
.setMetric("segment/loadQueue/count", 10)
+
.build(ImmutableMap.of("service", "historical", "host", "druid.test.cn"));
+ emitter.emit(event);
+
+ // Get the metrics and check that it's not expired initially
+ Map<String, DimensionsAndCollector> registeredMetrics =
emitter.getMetrics().getRegisteredMetrics();
+ DimensionsAndCollector testMetric =
registeredMetrics.get("segment/loadQueue/count");
+
+ Assert.assertNotNull("Test metric should be registered", testMetric);
+ Assert.assertFalse("Metric should not be expired initially",
+ testMetric.isExpired(flushPeriod));
+
+ // Wait for the metric to expire (ttl + 1 second buffer)
+ try {
+ Thread.sleep(TimeUnit.SECONDS.toMillis(flushPeriod) + 1000);
+ }
+ catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ }
+
+ Assert.assertTrue("Metric should be expired after TTL",
+ testMetric.isExpired(flushPeriod));
+ emitter.close();
+ }
+
+ @Test
+ public void testMetricTtlUpdate()
+ {
+ int flushPeriod = 3;
+ PrometheusEmitterConfig config = new
PrometheusEmitterConfig(PrometheusEmitterConfig.Strategy.exporter, "test",
null, 0, null, false, true, flushPeriod, null, false, null);
+ PrometheusEmitter emitter = new PrometheusEmitter(config);
+ emitter.start();
+
+ ServiceMetricEvent event = ServiceMetricEvent.builder()
+
.setMetric("segment/loadQueue/count", 10)
+
.build(ImmutableMap.of("service", "historical", "host", "druid.test.cn"));
+ emitter.emit(event);
Review Comment:
I guess we can defer this test since we're not considering labels when
clearing in this PR
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