/*
* 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.test.internal;
import co.cask.cdap.internal.AppFabricClient;
import co.cask.cdap.proto.Id;
import co.cask.cdap.test.AbstractProgramManager;
import co.cask.cdap.test.WorkerManager;
import com.google.common.base.Preconditions;
import com.google.common.base.Throwables;
/**
* A default implementation of {@link WorkerManager}
*/
public class DefaultWorkerManager extends AbstractProgramManager<WorkerManager> implements WorkerManager {
private final AppFabricClient appFabricClient;
public DefaultWorkerManager(Id.Program programId,
AppFabricClient appFabricClient, DefaultApplicationManager applicationManager) {
super(programId, applicationManager);
this.appFabricClient = appFabricClient;
}
@Override
public void setInstances(int instances) {
Preconditions.checkArgument(instances > 0, "Instance count should be > 0.");
try {
appFabricClient.setWorkerInstances(programId.getNamespaceId(), programId.getApplicationId(), programId.getId(),
instances);
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
@Override
public int getInstances() {
return appFabricClient.getWorkerInstances(programId.getNamespaceId(), programId.getApplicationId(),
programId.getId()).getInstances();
}
}