/*
* Copyright © 2015 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.internal.app.runtime.worker;
import co.cask.cdap.api.Resources;
import co.cask.cdap.api.app.ApplicationSpecification;
import co.cask.cdap.api.worker.Worker;
import co.cask.cdap.api.worker.WorkerSpecification;
import co.cask.cdap.app.program.Program;
import co.cask.cdap.app.runtime.ProgramController;
import co.cask.cdap.app.runtime.ProgramOptions;
import co.cask.cdap.app.runtime.ProgramRunner;
import co.cask.cdap.common.app.RunIds;
import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.internal.app.AbstractInMemoryProgramRunner;
import co.cask.cdap.internal.app.runtime.ProgramOptionConstants;
import co.cask.cdap.proto.ProgramType;
import com.google.common.base.Preconditions;
import com.google.gson.Gson;
import com.google.inject.Inject;
import com.google.inject.Provider;
import org.apache.twill.api.RunId;
/**
* For running {@link Worker}. Only used in in-memory/standalone mode.
*/
public class InMemoryWorkerRunner extends AbstractInMemoryProgramRunner {
private static final Gson GSON = new Gson();
private final Provider<WorkerProgramRunner> workerProgramRunnerProvider;
@Inject
InMemoryWorkerRunner(CConfiguration cConf, Provider<WorkerProgramRunner> workerProgramRunnerProvider) {
super(cConf);
this.workerProgramRunnerProvider = workerProgramRunnerProvider;
}
@Override
public ProgramController run(Program program, ProgramOptions options) {
// Extract and verify parameters
ApplicationSpecification appSpec = program.getApplicationSpecification();
Preconditions.checkNotNull(appSpec, "Missing application specification.");
ProgramType type = program.getType();
Preconditions.checkNotNull(type, "Missing processor type.");
Preconditions.checkArgument(type == ProgramType.WORKER, "Only WORKER process type is supported.");
WorkerSpecification workerSpec = appSpec.getWorkers().get(program.getName());
Preconditions.checkNotNull(workerSpec, "Missing WorkerSpecification for %s", program.getName());
String instances = options.getArguments().getOption(ProgramOptionConstants.INSTANCES,
String.valueOf(workerSpec.getInstances()));
String resourceString = options.getArguments().getOption(ProgramOptionConstants.RESOURCES, null);
Resources newResources = (resourceString != null) ? GSON.fromJson(resourceString, Resources.class) :
workerSpec.getResources();
WorkerSpecification newWorkerSpec = new WorkerSpecification(workerSpec.getClassName(), workerSpec.getName(),
workerSpec.getDescription(), workerSpec.getProperties(),
workerSpec.getDatasets(), newResources,
Integer.valueOf(instances));
//RunId for worker
RunId runId = RunIds.fromString(options.getArguments().getOption(ProgramOptionConstants.RUN_ID));
return startAll(program, options, runId, newWorkerSpec.getInstances());
}
@Override
protected ProgramRunner createProgramRunner() {
return workerProgramRunnerProvider.get();
}
}