blob: 60c8585add0d19929c30c0f6a703454fb4a0b084 [file] [log] [blame]
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.conf;
import java.util.concurrent.Callable;
import org.apache.hadoop.hdds.cli.HddsVersionProvider;
import picocli.CommandLine.Command;
import picocli.CommandLine.Parameters;
import picocli.CommandLine.ParentCommand;
/**
* Handler for ozone getconf confKey [key].
*/
@Command(name = "confKey",
aliases = {"-confKey"},
description = "gets a specific key from the configuration",
mixinStandardHelpOptions = true,
versionProvider = HddsVersionProvider.class)
public class PrintConfKeyCommandHandler implements Callable<Void> {
@Parameters(arity = "1..1", description = "configuration key")
private String confKey;
@ParentCommand
private OzoneGetConf tool;
@Override
public Void call() throws Exception {
String value = tool.getConf().getTrimmed(confKey);
if (value != null) {
tool.printOut(value);
} else {
throw new IllegalArgumentException(
"Configuration " + confKey + " is missing.");
}
return null;
}
}