org.apache.zookeeper.cli.GetAllChildrenNumberCommand 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.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;
/**
* getAllChildrenNumber command for CLI
*/
public class GetAllChildrenNumberCommand extends CliCommand {
private static Options options = new Options();
private String[] args;
public GetAllChildrenNumberCommand() {
super("getAllChildrenNumber", "path");
}
@Override
public CliCommand parse(String[] cmdArgs) throws CliParseException {
Parser parser = new PosixParser();
CommandLine cl;
try {
cl = parser.parse(options, cmdArgs);
} catch (ParseException ex) {
throw new CliParseException(ex);
}
args = cl.getArgs();
return this;
}
@Override
public boolean exec() throws CliException {
if (args.length < 2) {
throw new MalformedCommandException(getUsageStr());
}
try {
String path = args[1];
int allChildrenNumber = zk.getAllChildrenNumber(path);
out.println(allChildrenNumber);
} catch (IllegalArgumentException ex) {
throw new MalformedPathException(ex.getMessage());
} catch (KeeperException | InterruptedException ex) {
throw new CliWrapperException(ex);
}
return false;
}
}