modules/core/src/test/java/org/apache/ignite/internal/GridCommunicationSelfTest.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.internal;

import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.UUID;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteException;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.internal.util.typedef.G;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.apache.ignite.testframework.junits.common.GridCommonTest;
import org.junit.Test;

/**
 * Grid basic communication test.
 */
@GridCommonTest(group = "Kernal Self")
public class GridCommunicationSelfTest extends GridCommonAbstractTest {
    /** */
    private static Ignite ignite;

    /** */
    public GridCommunicationSelfTest() {
        super(/*start grid*/true);
    }

    /** {@inheritDoc} */
    @Override protected void beforeTestsStarted() throws Exception {
        ignite = G.ignite(getTestIgniteInstanceName());
    }

    /** {@inheritDoc} */
    @Override protected void afterTestsStopped() throws Exception {
        super.afterTestsStopped();

        ignite = null;
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testSendMessageToEmptyNodes() throws Exception {
        Collection<ClusterNode> empty = Collections.emptyList();

        try {
            sendMessage(empty, 1);
        }
        catch (IllegalArgumentException ignored) {
            // No-op.
        }
    }

    /**
     * @param nodes Nodes to send message to.
     * @param cntr Counter.
     */
    private void sendMessage(Collection<ClusterNode> nodes, int cntr) {
        try {
            message(ignite.cluster().forNodes(nodes)).send(null,
                new GridTestCommunicationMessage(cntr, ignite.cluster().localNode().id()));
        }
        catch (IgniteException e) {
            error("Failed to send message.", e);
        }
    }

    /**
     * Test message.
     */
    @SuppressWarnings({"PublicInnerClass"})
    public static class GridTestCommunicationMessage implements Serializable {
        /** */
        private final int msgId;

        /** */
        private final UUID sndId;

        /**
         * @param msgId Message id.
         * @param sndId Sender id.
         */
        public GridTestCommunicationMessage(int msgId, UUID sndId) {
            assert sndId != null;

            this.msgId = msgId;
            this.sndId = sndId;
        }

        /**
         * @return Message id.
         */
        public int getMessageId() {
            return msgId;
        }

        /**
         * @return Sender id.
         */
        public UUID getSenderId() {
            return sndId;
        }

        /** {@inheritDoc} */
        @Override public String toString() {
            StringBuilder buf = new StringBuilder();

            buf.append(getClass().getSimpleName());
            buf.append(" [msgId=").append(msgId);
            buf.append(']');

            return buf.toString();
        }
    }
}