/**
* Copyright The Apache Software Foundation
*
* 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 com.alibaba.wasp.util;
import com.alibaba.wasp.conf.WaspConfiguration;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
public abstract class ServerCommandLine extends Configured implements Tool {
private static final Log LOG = LogFactory.getLog(ServerCommandLine.class);
/**
* Implementing subclasses should return a usage string to print out.
*/
protected abstract String getUsage();
/**
* Print usage information for this command line.
*
* @param message if not null, print this message before the usage info.
*/
protected void usage(String message) {
if (message != null) {
System.err.println(message);
System.err.println("");
}
System.err.println(getUsage());
}
/**
* Log information about the currently running JVM.
*/
public static void logJVMInfo() {
// Print out vm stats before starting up.
RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
if (runtime != null) {
LOG.info("vmName=" + runtime.getVmName() + ", vmVendor=" +
runtime.getVmVendor() + ", vmVersion=" + runtime.getVmVersion());
LOG.info("vmInputArguments=" + runtime.getInputArguments());
}
}
/**
* Parse and run the given command line. This may exit the JVM if
* a nonzero exit code is returned from <code>run()</code>.
*/
public void doMain(String args[]) {
try {
int ret = ToolRunner.run(WaspConfiguration.create(), this, args);
if (ret != 0) {
System.exit(ret);
}
} catch (Exception e) {
LOG.error("Failed to run", e);
System.exit(-1);
}
}
}