org.apache.tez.dag.app.launcher.ContainerOp.java Source code

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Here is the source code for org.apache.tez.dag.app.launcher.ContainerOp.java

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/*
 * 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.apache.tez.dag.app.launcher;

import com.google.common.base.Preconditions;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.tez.serviceplugins.api.ContainerLaunchRequest;
import org.apache.tez.serviceplugins.api.ContainerLauncherOperationBase;
import org.apache.tez.serviceplugins.api.ContainerStopRequest;

@InterfaceAudience.Private
public class ContainerOp {
    enum OPType {
        LAUNCH_REQUEST, STOP_REQUEST
    }

    final ContainerLauncherOperationBase command;
    final OPType opType;

    public ContainerOp(OPType opType, ContainerLauncherOperationBase command) {
        this.opType = opType;
        this.command = command;
    }

    public OPType getOpType() {
        return opType;
    }

    public ContainerLauncherOperationBase getBaseOperation() {
        return command;
    }

    public ContainerLaunchRequest getLaunchRequest() {
        Preconditions.checkState(opType == OPType.LAUNCH_REQUEST);
        return (ContainerLaunchRequest) command;
    }

    public ContainerStopRequest getStopRequest() {
        Preconditions.checkState(opType == OPType.STOP_REQUEST);
        return (ContainerStopRequest) command;
    }

    @Override
    public String toString() {
        return "ContainerOp{" + "opType=" + opType + ", command=" + command + '}';
    }
}