/*
* Copyright © 2014 Cask Data, 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 co.cask.cdap.cli.command;
import co.cask.cdap.cli.ArgumentName;
import co.cask.cdap.cli.CLIConfig;
import co.cask.cdap.cli.ElementType;
import co.cask.cdap.cli.english.Article;
import co.cask.cdap.cli.english.Fragment;
import co.cask.cdap.cli.exception.CommandInputError;
import co.cask.cdap.cli.util.AbstractAuthCommand;
import co.cask.cdap.cli.util.ArgumentParser;
import co.cask.cdap.client.ProgramClient;
import co.cask.cdap.proto.Id;
import co.cask.common.cli.Arguments;
import com.google.gson.Gson;
import java.io.PrintStream;
import java.util.Map;
/**
* Starts a program.
*/
public class StartProgramCommand extends AbstractAuthCommand {
private static final Gson GSON = new Gson();
protected final ElementType elementType;
private final ProgramClient programClient;
protected boolean isDebug = false;
public StartProgramCommand(ElementType elementType, ProgramClient programClient, CLIConfig cliConfig) {
super(cliConfig);
this.elementType = elementType;
this.programClient = programClient;
}
@Override
public void perform(Arguments arguments, PrintStream output) throws Exception {
String[] programIdParts = arguments.get(elementType.getArgumentName().toString()).split("\\.");
if (programIdParts.length < 2) {
throw new CommandInputError(this);
}
String appId = programIdParts[0];
String programName = programIdParts[1];
Id.Program programId = Id.Program.from(cliConfig.getCurrentNamespace(), appId,
elementType.getProgramType(), programName);
String runtimeArgsString = arguments.get(ArgumentName.RUNTIME_ARGS.toString(), "");
if (runtimeArgsString == null || runtimeArgsString.isEmpty()) {
// run with stored runtime args
programClient.start(programId, isDebug);
runtimeArgsString = GSON.toJson(programClient.getRuntimeArgs(programId));
output.printf("Successfully started %s '%s' of application '%s' with stored runtime arguments '%s'\n",
elementType.getName(), programName, appId, runtimeArgsString);
} else {
// run with user-provided runtime args
Map<String, String> runtimeArgs = ArgumentParser.parseMap(runtimeArgsString);
programClient.start(programId, isDebug, runtimeArgs);
output.printf("Successfully started %s '%s' of application '%s' with provided runtime arguments '%s'\n",
elementType.getName(), programName, appId, runtimeArgsString);
}
}
@Override
public String getPattern() {
return String.format("start %s <%s> [<%s>]", elementType.getShortName(), elementType.getArgumentName(),
ArgumentName.RUNTIME_ARGS);
}
@Override
public String getDescription() {
return String.format("Starts %s. '<%s>' is specified in the format 'key1=a key2=b'.",
Fragment.of(Article.A, elementType.getName()), ArgumentName.RUNTIME_ARGS);
}
}