BartMiki commented on code in PR #14935:
URL: https://github.com/apache/druid/pull/14935#discussion_r1420385682
##########
docs/development/extensions-contrib/prometheus.md:
##########
@@ -47,6 +46,8 @@ All the configuration parameters for the Prometheus emitter
are under `druid.emi
| `druid.emitter.prometheus.pushGatewayAddress` | Pushgateway address.
Required if using `pushgateway` strategy.
| no | none
|
| `druid.emitter.prometheus.flushPeriod` | Emit metrics to Pushgateway
every `flushPeriod` seconds. Required if `pushgateway` strategy is used.
| no | 15
|
| `druid.emitter.prometheus.extraLabels` | JSON key-value pairs for
additional labels on all metrics. Keys (label names) must match the regex
`[a-zA-Z_:][a-zA-Z0-9_:]*`. Example: `{"cluster_name": "druid_cluster1", "env":
"staging"}`. | no | none
|
+| `druid.emitter.prometheus.pushGatewayDeleteOnShutdown` | Flag to delete
metrics from Pushgateway on shutdown. Works only if `pushgateway` strategy is
used.
| no | false |
Review Comment:
Done
##########
extensions-contrib/prometheus-emitter/src/test/java/org/apache/druid/emitter/prometheus/PrometheusEmitterTest.java:
##########
@@ -333,7 +341,61 @@ public void testEmitterConfig()
true,
true,
60,
+ null,
+ false,
null
);
}
+
+ @Test
+ public void testEmitterWithDeleteOnShutdown() throws IOException
+ {
+ PrometheusEmitterConfig emitterConfig = new
PrometheusEmitterConfig(PrometheusEmitterConfig.Strategy.pushgateway,
"namespace3", null, 0, "pushgateway", true, true, 60, null, true, null);
+
+ PushGateway mockPushGateway = mock(PushGateway.class);
+ mockPushGateway.push(anyObject(CollectorRegistry.class), anyString(),
anyObject(ImmutableMap.class));
+ expectLastCall().atLeastOnce();
+ mockPushGateway.delete(anyString(), anyObject(ImmutableMap.class));
+ expectLastCall().atLeastOnce();
+
+ EasyMock.replay(mockPushGateway);
+
+ PrometheusEmitter emitter = new PrometheusEmitter(emitterConfig);
+ emitter.start();
+ emitter.setPushGateway(mockPushGateway);
+ ServiceMetricEvent build = ServiceMetricEvent.builder()
+ .setDimension("task",
"index_parallel")
+ .setMetric("task/run/time",
500)
+
.build(ImmutableMap.of("service", "peon", "host", "druid.test.cn"));
+ emitter.emit(build);
+ emitter.flush();
+ emitter.close();
+
+ EasyMock.verify(mockPushGateway);
+ }
+
+ @Test
+ public void testEmitterWithoutDeleteOnShutdown() throws IOException
+ {
+ PrometheusEmitterConfig emitterConfig = new
PrometheusEmitterConfig(PrometheusEmitterConfig.Strategy.pushgateway,
"namespace3", null, 0, "pushgateway", true, true, 60, null, false, null);
Review Comment:
Done
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