eolivelli commented on a change in pull request #918: ZOOKEEPER-3366: Pluggable
metrics system for ZooKeeper - move remaining metrics to MetricsProvider
URL: https://github.com/apache/zookeeper/pull/918#discussion_r277873995
##########
File path:
zookeeper-server/src/main/java/org/apache/zookeeper/server/ZooKeeperServer.java
##########
@@ -1383,4 +1398,82 @@ public void setResponseCachingEnabled(boolean
isEnabled) {
public ResponseCache getReadResponseCache() {
return isResponseCachingEnabled ? readResponseCache : null;
}
+
+ /**
+ * Register server wide Gauges.
+ *
+ * @param zkServer the server to monitor
+ * @param metricsProvider the provider which publish these metrics
+ */
+ public static void registerGauges(ZooKeeperServer zkServer,
MetricsProvider metricsProvider) {
+ final ZKDatabase zkdb = zkServer.getZKDatabase();
+ final ServerStats stats = zkServer.serverStats();
+
+ MetricsContext rootContext = metricsProvider.getRootContext();
+ rootContext.registerGauge("avg_latency", stats::getAvgLatency);
+
+ rootContext.registerGauge("max_latency", stats::getMaxLatency);
+ rootContext.registerGauge("min_latency", stats::getMinLatency);
+
+ rootContext.registerGauge("packets_received",
stats::getPacketsReceived);
+ rootContext.registerGauge("packets_sent", stats::getPacketsSent);
+ rootContext.registerGauge("num_alive_connections",
stats::getNumAliveClientConnections);
+
+ rootContext.registerGauge("outstanding_requests",
stats::getOutstandingRequests);
+ rootContext.registerGauge("uptime", stats::getUptime);
+
+ rootContext.registerGauge("znode_count", zkdb::getNodeCount);
+
+ rootContext.registerGauge("watch_count",
zkdb.getDataTree()::getWatchCount);
+ rootContext.registerGauge("ephemerals_count",
zkdb.getDataTree()::getEphemeralsCount);
+ rootContext.registerGauge("approximate_data_size",
zkdb.getDataTree()::cachedApproximateDataSize);
+
+ rootContext.registerGauge("global_sessions", zkdb::getSessionCount);
+ rootContext.registerGauge("local_sessions",
+ zkServer.getSessionTracker()::getLocalSessionCount);
+
+ OSMXBean osMbean = new OSMXBean();
+ rootContext.registerGauge("open_file_descriptor_count",
osMbean::getOpenFileDescriptorCount);
+ rootContext.registerGauge("max_file_descriptor_count",
osMbean::getMaxFileDescriptorCount);
+ rootContext.registerGauge("connection_drop_probability",
zkServer::getConnectionDropChance);
+
+ rootContext.registerGauge("last_client_response_size",
stats.getClientResponseStats()::getLastBufferSize);
+ rootContext.registerGauge("max_client_response_size",
stats.getClientResponseStats()::getMaxBufferSize);
+ rootContext.registerGauge("min_client_response_size",
stats.getClientResponseStats()::getMinBufferSize);
+
+ if (zkServer instanceof LeaderZooKeeperServer) {
Review comment:
this can be done better using polymorphism
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