Example usage for org.apache.zookeeper.server ZooKeeperServer serverStats

Introduction

In this page you can find the example usage for org.apache.zookeeper.server ZooKeeperServer serverStats.

Prototype

ServerStats serverStats

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Usage

From source file:org.apache.pulsar.zookeeper.ZooKeeperServerAspect.java

License:Apache License

@After("zkServerConstructorPointCut()")
public void zkServerConstructor(JoinPoint joinPoint) throws Throwable {
    // ZooKeeperServer instance was created
    ZooKeeperServer zkServer = (ZooKeeperServer) joinPoint.getThis();

    synchronized (ZooKeeperServerAspect.class) {
        if (metricsRegistered) {
            // We can only register the metrics a single time for the process
            return;
        }//w ww . ja  v  a  2s . co  m

        metricsRegistered = true;
    }

    Gauge.build().name("zookeeper_server_znode_count").help("Number of z-nodes stored").create()
            .setChild(new Gauge.Child() {
                @Override
                public double get() {
                    return zkServer.getZKDatabase().getNodeCount();
                }
            }).register();

    Gauge.build().name("zookeeper_server_data_size_bytes").help("Size of all of z-nodes stored (bytes)")
            .create().setChild(new Gauge.Child() {
                @Override
                public double get() {
                    return zkServer.getZKDatabase().getDataTree().approximateDataSize();
                }
            }).register();

    Gauge.build().name("zookeeper_server_connections").help("Number of currently opened connections").create()
            .setChild(new Gauge.Child() {
                @Override
                public double get() {
                    return zkServer.serverStats().getNumAliveClientConnections();
                }
            }).register();

    Gauge.build().name("zookeeper_server_watches_count").help("Number of watches").create()
            .setChild(new Gauge.Child() {
                @Override
                public double get() {
                    return zkServer.getZKDatabase().getDataTree().getWatchCount();
                }
            }).register();

    Gauge.build().name("zookeeper_server_ephemerals_count").help("Number of ephemerals z-nodes").create()
            .setChild(new Gauge.Child() {
                @Override
                public double get() {
                    return zkServer.getZKDatabase().getDataTree().getEphemeralsCount();
                }
            }).register();
}

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