org.apache.hadoop.hbase.PerformanceEvaluationCommons.java Source code

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Here is the source code for org.apache.hadoop.hbase.PerformanceEvaluationCommons.java

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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.hbase;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Code shared by PE tests.
 */
public class PerformanceEvaluationCommons {
    static final Log LOG = LogFactory.getLog(PerformanceEvaluationCommons.class.getName());

    public static void assertValueSize(final int expectedSize, final int got) {
        if (got != expectedSize) {
            throw new AssertionError("Expected " + expectedSize + " but got " + got);
        }
    }

    public static void assertKey(final byte[] expected, final ByteBuffer got) {
        byte[] b = new byte[got.limit()];
        got.get(b, 0, got.limit());
        assertKey(expected, b);
    }

    public static void assertKey(final byte[] expected, final byte[] got) {
        if (!org.apache.hadoop.hbase.util.Bytes.equals(expected, got)) {
            throw new AssertionError("Expected " + org.apache.hadoop.hbase.util.Bytes.toString(expected)
                    + " but got " + org.apache.hadoop.hbase.util.Bytes.toString(got));
        }
    }

    public static void concurrentReads(final Runnable r) {
        final int count = 1;
        long now = System.currentTimeMillis();
        List<Thread> threads = new ArrayList<Thread>(count);
        for (int i = 0; i < count; i++) {
            Thread t = new Thread(r);
            t.setName("" + i);
            threads.add(t);
        }
        for (Thread t : threads) {
            t.start();
        }
        for (Thread t : threads) {
            try {
                t.join();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        LOG.info("Test took " + (System.currentTimeMillis() - now));
    }
}