org.apache.zookeeper.cli.GetConfigCommand 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.cli;
import static java.nio.charset.StandardCharsets.UTF_8;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.data.Stat;
import org.apache.zookeeper.server.util.ConfigUtils;
/**
* get command for cli
*/
public class GetConfigCommand extends CliCommand {
private static Options options = new Options();
private String[] args;
private CommandLine cl;
static {
options.addOption("s", false, "stats");
options.addOption("w", false, "watch");
options.addOption("c", false, "client connection string");
}
public GetConfigCommand() {
super("config", "[-c] [-w] [-s]");
}
@Override
public CliCommand parse(String[] cmdArgs) throws CliParseException {
DefaultParser parser = new DefaultParser();
try {
cl = parser.parse(options, cmdArgs);
} catch (ParseException ex) {
throw new CliParseException(ex);
}
args = cl.getArgs();
if (args.length < 1) {
throw new CliParseException(getUsageStr());
}
return this;
}
@Override
public boolean exec() throws CliException {
boolean watch = cl.hasOption("w");
Stat stat = new Stat();
byte[] data;
try {
data = zk.getConfig(watch, stat);
} catch (KeeperException | InterruptedException ex) {
throw new CliWrapperException(ex);
}
data = (data == null) ? "null".getBytes(UTF_8) : data;
if (cl.hasOption("c")) {
out.println(ConfigUtils.getClientConfigStr(new String(data, UTF_8)));
} else {
out.println(new String(data, UTF_8));
}
if (cl.hasOption("s")) {
new StatPrinter(out).print(stat);
}
return watch;
}
}