org.apache.zookeeper.server.command.StatCommand Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.zookeeper.server.command;
import java.io.PrintWriter;
import org.apache.zookeeper.Version;
import org.apache.zookeeper.server.ServerCnxn;
import org.apache.zookeeper.server.ServerStats;
import org.apache.zookeeper.server.quorum.BufferStats;
import org.apache.zookeeper.server.quorum.Leader;
import org.apache.zookeeper.server.quorum.LeaderZooKeeperServer;
import org.apache.zookeeper.server.quorum.ReadOnlyZooKeeperServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class StatCommand extends AbstractFourLetterCommand {
private static final Logger LOG = LoggerFactory.getLogger(AbstractFourLetterCommand.class);
private int len;
public StatCommand(PrintWriter pw, ServerCnxn serverCnxn, int len) {
super(pw, serverCnxn);
this.len = len;
}
@Override
public void commandRun() {
if (!isZKServerRunning()) {
pw.println(ZK_NOT_SERVING);
} else {
pw.print("Zookeeper version: ");
pw.println(Version.getFullVersion());
if (zkServer instanceof ReadOnlyZooKeeperServer) {
pw.println("READ-ONLY mode; serving only read-only clients");
}
if (len == FourLetterCommands.statCmd) {
LOG.info("Stat command output");
pw.println("Clients:");
for (ServerCnxn c : factory.getConnections()) {
c.dumpConnectionInfo(pw, true);
pw.println();
}
pw.println();
}
ServerStats serverStats = zkServer.serverStats();
pw.print(serverStats.toString());
pw.print("Node count: ");
pw.println(zkServer.getZKDatabase().getNodeCount());
if (serverStats.getServerState().equals("leader")) {
Leader leader = ((LeaderZooKeeperServer) zkServer).getLeader();
BufferStats proposalStats = leader.getProposalStats();
pw.printf("Proposal sizes last/min/max: %s%n", proposalStats.toString());
}
}
}
}