modules/core/src/test/java/org/apache/ignite/platform/PlatformStopIgniteTask.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.ignite.platform;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.ignite.IgniteException;
import org.apache.ignite.Ignition;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.compute.ComputeJob;
import org.apache.ignite.compute.ComputeJobAdapter;
import org.apache.ignite.compute.ComputeJobResult;
import org.apache.ignite.compute.ComputeTaskAdapter;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * Task to stop an Ignite node.
 */
public class PlatformStopIgniteTask extends ComputeTaskAdapter<String, Boolean> {
    /** {@inheritDoc} */
    @NotNull @Override public Map<? extends ComputeJob, ClusterNode> map(List<ClusterNode> subgrid,
        @Nullable String arg) throws IgniteException {
        ClusterNode node = subgrid.get(0);

        for (ClusterNode n : subgrid) {
            if (n.isLocal()) {
                node = n;
                break;
            }
        }

        return Collections.singletonMap(new PlatformStopIgniteJob(arg), node);
    }

    /** {@inheritDoc} */
    @Nullable @Override public Boolean reduce(List<ComputeJobResult> results) throws IgniteException {
        ComputeJobResult res = results.get(0);

        if (res.getException() != null)
            throw res.getException();
        else
            return results.get(0).getData();
    }

    /**
     * Job.
     */
    private static class PlatformStopIgniteJob extends ComputeJobAdapter {
        /** */
        private final String igniteInstanceName;

        /**
         * Ctor.
         *
         * @param igniteInstanceName Name.
         */
        private PlatformStopIgniteJob(String igniteInstanceName) {
            this.igniteInstanceName = igniteInstanceName;
        }

        /** {@inheritDoc} */
        @Override public Object execute() throws IgniteException {
            return Ignition.stop(igniteInstanceName, true);
        }
    }
}