org.apache.zookeeper.server.command.WatchCommand Maven / Gradle / Ivy
/*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* 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.server.DataTree;
import org.apache.zookeeper.server.ServerCnxn;
public class WatchCommand extends AbstractFourLetterCommand {
int len = 0;
public WatchCommand(PrintWriter pw, ServerCnxn serverCnxn, int len) {
super(pw, serverCnxn);
this.len = len;
}
@Override
public void commandRun() {
if (!isZKServerRunning()) {
pw.println(ZK_NOT_SERVING);
} else {
DataTree dt = zkServer.getZKDatabase().getDataTree();
if (len == FourLetterCommands.wchsCmd) {
dt.dumpWatchesSummary(pw);
} else if (len == FourLetterCommands.wchpCmd) {
dt.dumpWatches(pw, true);
} else {
dt.dumpWatches(pw, false);
}
pw.println();
}
}
}