/**
* 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.cli;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.Parser;
import org.apache.commons.cli.PosixParser;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.Watcher.WatcherType;
/**
* Remove watches command for cli
*/
public class RemoveWatchesCommand extends CliCommand {
private static Options options = new Options();
private String[] args;
private CommandLine cl;
{
options.addOption("c", false, "child watcher type");
options.addOption("d", false, "data watcher type");
options.addOption("a", false, "any watcher type");
options.addOption("l", false,
"remove locally when there is no server connection");
}
public RemoveWatchesCommand() {
super("removewatches", "path [-c|-d|-a] [-l]");
}
@Override
public CliCommand parse(String[] cmdArgs) throws ParseException {
Parser parser = new PosixParser();
cl = parser.parse(options, cmdArgs);
args = cl.getArgs();
if (args.length < 2) {
throw new ParseException(getUsageStr());
}
return this;
}
@Override
public boolean exec() throws KeeperException, InterruptedException {
String path = args[1];
WatcherType wtype = WatcherType.Any;
// if no matching option -c or -d or -a is specified, we remove
// the watches of the given node by choosing WatcherType.Any
if (cl.hasOption("c")) {
wtype = WatcherType.Children;
} else if (cl.hasOption("d")) {
wtype = WatcherType.Data;
} else if (cl.hasOption("a")) {
wtype = WatcherType.Any;
}
// whether to remove the watches locally
boolean local = cl.hasOption("l");
try {
zk.removeAllWatches(path, wtype, local);
} catch (KeeperException.NoWatcherException ex) {
err.println(ex.getMessage());
return false;
}
return true;
}
}