/*
* 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.internal.app.runtime.workflow;
import co.cask.cdap.api.mapreduce.MapReduceSpecification;
import co.cask.cdap.app.ApplicationSpecification;
import co.cask.cdap.app.program.Program;
import co.cask.cdap.internal.app.ForwardingApplicationSpecification;
import co.cask.cdap.internal.app.program.ForwardingProgram;
import co.cask.cdap.proto.Id;
import co.cask.cdap.proto.ProgramType;
import com.google.common.collect.ImmutableMap;
import java.util.Map;
/**
* A Forwarding Program that turns a Workflow Program into a MapReduce program.
*/
public final class WorkflowMapReduceProgram extends ForwardingProgram {
private final MapReduceSpecification mapReduceSpec;
public WorkflowMapReduceProgram(Program delegate, MapReduceSpecification mapReduceSpec) {
super(delegate);
this.mapReduceSpec = mapReduceSpec;
}
@Override
public String getMainClassName() {
return mapReduceSpec.getClassName();
}
@SuppressWarnings("unchecked")
@Override
public <T> Class<T> getMainClass() throws ClassNotFoundException {
return (Class<T>) Class.forName(getMainClassName(), true, getClassLoader());
}
@Override
public ProgramType getType() {
return ProgramType.MAPREDUCE;
}
@Override
public Id.Program getId() {
return Id.Program.from(getAccountId(), getApplicationId(), getName());
}
@Override
public String getName() {
return mapReduceSpec.getName();
}
@Override
public ApplicationSpecification getSpecification() {
return new ForwardingApplicationSpecification(super.getSpecification()) {
@Override
public Map<String, MapReduceSpecification> getMapReduce() {
return ImmutableMap.of(mapReduceSpec.getName(), mapReduceSpec);
}
};
}
}