brian-brazil commented on a change in pull request #927: ZOOKEEPER-3091
Prometheus.io integration
URL: https://github.com/apache/zookeeper/pull/927#discussion_r280374268
##########
File path:
zookeeper-server/src/main/java/org/apache/zookeeper/server/ZooKeeperServer.java
##########
@@ -1383,4 +1392,85 @@ public void setResponseCachingEnabled(boolean
isEnabled) {
public ResponseCache getReadResponseCache() {
return isResponseCachingEnabled ? readResponseCache : null;
}
+
+ protected void registerMetrics() {
+ MetricsContext rootContext = ServerMetrics
+ .getMetrics()
+ .getMetricsProvider()
+ .getRootContext();
+
+ final ZKDatabase zkdb = this.getZKDatabase();
+ final ServerStats stats = this.serverStats();
+
+ rootContext.registerGauge("avg_latency", stats::getAvgLatency);
+
+ rootContext.registerGauge("max_latency", stats::getMaxLatency);
+ rootContext.registerGauge("min_latency", stats::getMinLatency);
+
+ rootContext.registerGauge("packets_received",
stats::getPacketsReceived);
Review comment:
It's not meant to come up with direct instrumentation, as you know the type
(counter here). You'd have to write a custom collector, which is what you'd be
doing if you were producing the output based on your existing instrumentation
system.
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