hbase-server/src/test/java/org/apache/hadoop/hbase/TestServerLoad.java

/**
 * Copyright The Apache Software Foundation
 *
 * 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 static org.junit.Assert.*;

import org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
import org.apache.hadoop.hbase.testclassification.MiscTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import com.google.protobuf.ByteString;

@Category({MiscTests.class, SmallTests.class})
public class TestServerLoad {

  @Test
  public void testRegionLoadAggregation() {
    ServerLoad sl = new ServerLoad(createServerLoadProto());
    assertEquals(13, sl.getStores());
    assertEquals(114, sl.getStorefiles());
    assertEquals(129, sl.getStoreUncompressedSizeMB());
    assertEquals(504, sl.getRootIndexSizeKB());
    assertEquals(820, sl.getStorefileSizeInMB());
    assertEquals(82, sl.getStorefileIndexSizeInMB());
    assertEquals(((long)Integer.MAX_VALUE)*2, sl.getReadRequestsCount());
    assertEquals(300, sl.getFilteredReadRequestsCount());
    
  }
 
  @Test
  public void testToString() {
    ServerLoad sl = new ServerLoad(createServerLoadProto());
    String slToString = sl.toString();
    assertTrue(slToString.contains("numberOfStores=13"));
    assertTrue(slToString.contains("numberOfStorefiles=114"));
    assertTrue(slToString.contains("storefileUncompressedSizeMB=129"));
    assertTrue(slToString.contains("storefileSizeMB=820")); 
    assertTrue(slToString.contains("rootIndexSizeKB=504"));
    assertTrue(slToString.contains("coprocessors=[]"));
    assertTrue(slToString.contains("filteredReadRequestsCount=300"));
  }

  @Test
  public void testRegionLoadWrapAroundAggregation() {
	  ServerLoad sl = new ServerLoad(createServerLoadProto());
	  long totalCount = ((long)Integer.MAX_VALUE)*2;
	  assertEquals(totalCount, sl.getReadRequestsCount());
	  assertEquals(totalCount, sl.getWriteRequestsCount());
  }
  
  private ClusterStatusProtos.ServerLoad createServerLoadProto() {
    HBaseProtos.RegionSpecifier rSpecOne =
        HBaseProtos.RegionSpecifier.newBuilder()
            .setType(HBaseProtos.RegionSpecifier.RegionSpecifierType.ENCODED_REGION_NAME)
            .setValue(ByteString.copyFromUtf8("ASDFGQWERT")).build();
    HBaseProtos.RegionSpecifier rSpecTwo =
        HBaseProtos.RegionSpecifier.newBuilder()
            .setType(HBaseProtos.RegionSpecifier.RegionSpecifierType.ENCODED_REGION_NAME)
            .setValue(ByteString.copyFromUtf8("QWERTYUIOP")).build();

    ClusterStatusProtos.RegionLoad rlOne =
        ClusterStatusProtos.RegionLoad.newBuilder().setRegionSpecifier(rSpecOne).setStores(10)
            .setStorefiles(101).setStoreUncompressedSizeMB(106).setStorefileSizeMB(520)
            .setFilteredReadRequestsCount(100)
            .setStorefileIndexSizeMB(42).setRootIndexSizeKB(201).setReadRequestsCount(Integer.MAX_VALUE).setWriteRequestsCount(Integer.MAX_VALUE).build();
    ClusterStatusProtos.RegionLoad rlTwo =
        ClusterStatusProtos.RegionLoad.newBuilder().setRegionSpecifier(rSpecTwo).setStores(3)
            .setStorefiles(13).setStoreUncompressedSizeMB(23).setStorefileSizeMB(300)
            .setFilteredReadRequestsCount(200)
            .setStorefileIndexSizeMB(40).setRootIndexSizeKB(303).setReadRequestsCount(Integer.MAX_VALUE).setWriteRequestsCount(Integer.MAX_VALUE).build();

    ClusterStatusProtos.ServerLoad sl =
        ClusterStatusProtos.ServerLoad.newBuilder().addRegionLoads(rlOne).
          addRegionLoads(rlTwo).build();
    return sl;
  }

}