modules/core/src/test/java/org/apache/ignite/util/GridTopologyHeapSizeSelfTest.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.util;

import java.util.UUID;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.internal.ClusterMetricsSnapshot;
import org.apache.ignite.internal.util.typedef.F;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.apache.ignite.testframework.GridTestNode;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.junit.Test;

import static org.apache.ignite.internal.IgniteNodeAttributes.ATTR_JVM_PID;
import static org.apache.ignite.internal.IgniteNodeAttributes.ATTR_MACS;

/**
 * Tests for calculation logic for topology heap size.
 */
public class GridTopologyHeapSizeSelfTest extends GridCommonAbstractTest {
    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTopologyHeapSizeInOneJvm() throws Exception {
        try {
            ClusterNode node1 = startGrid(1).cluster().node();
            ClusterNode node2 = startGrid(2).cluster().node();

            double allSize = U.heapSize(F.asList(node1, node2), 10);

            double size1 = U.heapSize(node1, 10);

            assertEquals(size1, allSize, 1E-5);
        }
        finally {
            stopAllGrids();
        }
    }

    /** */
    @Test
    public void testTopologyHeapSizeForNodesWithDifferentPids() {
        GridTestNode node1 = getNode("123456789ABC", 1000);
        GridTestNode node2 = getNode("123456789ABC", 1001);

        double size1 = U.heapSize(node1, 10);
        double size2 = U.heapSize(node2, 10);

        double allSize = U.heapSize(F.asList((ClusterNode)node1, node2), 10);

        assertEquals(size1 + size2, allSize, 1E-5);
    }

    /** */
    @Test
    public void testTopologyHeapSizeForNodesWithDifferentMacs() {
        GridTestNode node1 = getNode("123456789ABC", 1000);
        GridTestNode node2 = getNode("CBA987654321", 1000);

        double size1 = U.heapSize(node1, 10);
        double size2 = U.heapSize(node2, 10);

        double allSize = U.heapSize(F.asList((ClusterNode)node1, node2), 10);

        assertEquals(size1 + size2, allSize, 1E-5);
    }

    /**
     * Creates test node with specified attributes.
     *
     * @param mac Node mac addresses.
     * @param pid Node PID.
     * @return Node.
     */
    private GridTestNode getNode(String mac, int pid) {
        ClusterMetricsSnapshot metrics = new ClusterMetricsSnapshot();

        metrics.setHeapMemoryMaximum(1024L * 1024 * 1024);
        metrics.setHeapMemoryInitialized(1024L * 1024 * 1024);

        GridTestNode node = new GridTestNode(UUID.randomUUID(), metrics);

        node.addAttribute(ATTR_MACS, mac);
        node.addAttribute(ATTR_JVM_PID, pid);

        return node;
    }
}