org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestQueueCapacities.java Source code

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/**
 * 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.hadoop.yarn.server.resourcemanager.scheduler.capacity;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.yarn.api.records.Resource;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

@RunWith(Parameterized.class)
public class TestQueueCapacities {
    private static final Log LOG = LogFactory.getLog(TestQueueCapacities.class);
    private String suffix;

    @Parameterized.Parameters
    public static Collection<String[]> getParameters() {
        return Arrays.asList(new String[][] { { "Capacity" }, { "AbsoluteCapacity" }, { "UsedCapacity" },
                { "AbsoluteUsedCapacity" }, { "MaximumCapacity" }, { "AbsoluteMaximumCapacity" },
                { "MaxAMResourcePercentage" }, { "ReservedCapacity" }, { "AbsoluteReservedCapacity" } });
    }

    public TestQueueCapacities(String suffix) {
        this.suffix = suffix;
    }

    private static float get(QueueCapacities obj, String suffix, String label) throws Exception {
        return executeByName(obj, "get" + suffix, label, -1f);
    }

    private static void set(QueueCapacities obj, String suffix, String label, float value) throws Exception {
        executeByName(obj, "set" + suffix, label, value);
    }

    // Use reflection to avoid too much avoid code
    private static float executeByName(QueueCapacities obj, String methodName, String label, float value)
            throws Exception {
        // We have 4 kinds of method
        // 1. getXXX() : float
        // 2. getXXX(label) : float
        // 3. setXXX(float) : void
        // 4. setXXX(label, float) : void
        if (methodName.startsWith("get")) {
            float result;
            if (label == null) {
                // 1.
                Method method = QueueCapacities.class.getDeclaredMethod(methodName);
                result = (float) method.invoke(obj);
            } else {
                // 2.
                Method method = QueueCapacities.class.getDeclaredMethod(methodName, String.class);
                result = (float) method.invoke(obj, label);
            }
            return result;
        } else {
            if (label == null) {
                // 3.
                Method method = QueueCapacities.class.getDeclaredMethod(methodName, Float.TYPE);
                method.invoke(obj, value);
            } else {
                // 4.
                Method method = QueueCapacities.class.getDeclaredMethod(methodName, String.class, Float.TYPE);
                method.invoke(obj, label, value);
            }
            return -1f;
        }
    }

    private void internalTestModifyAndRead(String label) throws Exception {
        QueueCapacities qc = new QueueCapacities(false);

        // First get returns 0 always
        Assert.assertEquals(0f, get(qc, suffix, label), 1e-8);

        // Set to 1, and check
        set(qc, suffix, label, 1f);
        Assert.assertEquals(1f, get(qc, suffix, label), 1e-8);

        // Set to 2, and check
        set(qc, suffix, label, 2f);
        Assert.assertEquals(2f, get(qc, suffix, label), 1e-8);
    }

    void check(int mem, int cpu, Resource res) {
        Assert.assertEquals(mem, res.getMemorySize());
        Assert.assertEquals(cpu, res.getVirtualCores());
    }

    @Test
    public void testModifyAndRead() throws Exception {
        LOG.info("Test - " + suffix);
        internalTestModifyAndRead(null);
        internalTestModifyAndRead("label");
    }
}