/**
* Copyright 2014 Cloudera Inc.
*
* Licensed 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.kitesdk.minicluster.cli;
import com.beust.jcommander.JCommander;
import com.beust.jcommander.MissingCommandException;
import com.beust.jcommander.ParameterException;
import com.beust.jcommander.Parameters;
import com.google.common.collect.ImmutableSet;
import java.util.Set;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.log4j.PropertyConfigurator;
import org.kitesdk.minicluster.MiniCluster;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Parameters(commandDescription = "Kite minicluster utility")
public class Main extends Configured implements Tool {
public static final String PROGRAM_NAME = "minicluster";
private static Set<String> HELP_ARGS = ImmutableSet.of("-h", "-help",
"--help", "help");
private final Logger console;
private final Help help;
private final JCommander jc;
Main(Logger console) {
this.console = console;
this.jc = new JCommander(this);
this.help = new Help(jc, console);
jc.setProgramName(PROGRAM_NAME);
jc.addCommand("help", help, "-h", "-help", "--help");
jc.addCommand("run", new RunCommand(console, getConf()));
}
@Override
public int run(String[] args) throws Exception {
try {
jc.parse(args);
} catch (MissingCommandException e) {
console.error(e.getMessage());
return 1;
} catch (ParameterException e) {
String cmd = jc.getParsedCommand();
if (args.length == 1) { // i.e., just the command (missing required
// arguments)
help.helpCommands.add(cmd);
help.run();
return 1;
} else { // check for variants like 'cmd --help' etc.
for (String arg : args) {
if (HELP_ARGS.contains(arg)) {
help.helpCommands.add(cmd);
help.run();
return 0;
}
}
}
console.error(e.getMessage());
return 1;
}
String parsed = jc.getParsedCommand();
if (parsed == null) {
help.run();
return 1;
} else if ("help".equals(parsed)) {
return help.run();
}
Command command = (Command) jc.getCommands().get(parsed).getObjects()
.get(0);
if (command == null) {
help.run();
return 1;
}
try {
return command.run();
} catch (IllegalArgumentException e) {
console.error("Argument error: {}", e.getMessage());
return 1;
} catch (IllegalStateException e) {
console.error("State error: {}", e.getMessage());
return 1;
} catch (Exception e) {
console.error("Unknown error: {}", e.getMessage());
console.error("ERROR", e);
return 1;
}
}
public static void main(String[] args) throws Exception {
// reconfigure logging with the kite minicluster configuration
PropertyConfigurator.configure(MiniCluster.class
.getResource("/kite-minicluster-logging.properties"));
Logger console = LoggerFactory.getLogger(MiniCluster.class);
int rc = ToolRunner.run(new Configuration(), new Main(console), args);
System.exit(rc);
}
}