hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/hdds/scm/pipeline/TestSimplePipelineProvider.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.hadoop.hdds.scm.pipeline;

import org.apache.hadoop.hdds.conf.OzoneConfiguration;
import org.apache.hadoop.hdds.protocol.DatanodeDetails;
import org.apache.hadoop.hdds.protocol.proto.HddsProtos;
import org.apache.hadoop.hdds.scm.TestUtils;
import org.apache.hadoop.hdds.scm.container.MockNodeManager;
import org.apache.hadoop.hdds.scm.node.NodeManager;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * Test for SimplePipelineProvider.
 */
public class TestSimplePipelineProvider {

  private NodeManager nodeManager;
  private PipelineProvider provider;
  private PipelineStateManager stateManager;

  @Before
  public void init() throws Exception {
    nodeManager = new MockNodeManager(true, 10);
    stateManager = new PipelineStateManager(new OzoneConfiguration());
    provider = new SimplePipelineProvider(nodeManager);
  }

  @Test
  public void testCreatePipelineWithFactor() throws IOException {
    HddsProtos.ReplicationFactor factor = HddsProtos.ReplicationFactor.THREE;
    Pipeline pipeline = provider.create(factor);
    stateManager.addPipeline(pipeline);
    Assert.assertEquals(pipeline.getType(),
        HddsProtos.ReplicationType.STAND_ALONE);
    Assert.assertEquals(pipeline.getFactor(), factor);
    Assert.assertEquals(pipeline.getPipelineState(),
        Pipeline.PipelineState.OPEN);
    Assert.assertEquals(pipeline.getNodes().size(), factor.getNumber());

    factor = HddsProtos.ReplicationFactor.ONE;
    Pipeline pipeline1 = provider.create(factor);
    stateManager.addPipeline(pipeline1);
    Assert.assertEquals(pipeline1.getType(),
        HddsProtos.ReplicationType.STAND_ALONE);
    Assert.assertEquals(pipeline1.getFactor(), factor);
    Assert.assertEquals(pipeline1.getPipelineState(),
        Pipeline.PipelineState.OPEN);
    Assert.assertEquals(pipeline1.getNodes().size(), factor.getNumber());
  }

  private List<DatanodeDetails> createListOfNodes(int nodeCount) {
    List<DatanodeDetails> nodes = new ArrayList<>();
    for (int i = 0; i < nodeCount; i++) {
      nodes.add(TestUtils.randomDatanodeDetails());
    }
    return nodes;
  }

  @Test
  public void testCreatePipelineWithNodes() throws IOException {
    HddsProtos.ReplicationFactor factor = HddsProtos.ReplicationFactor.THREE;
    Pipeline pipeline =
        provider.create(factor, createListOfNodes(factor.getNumber()));
    Assert.assertEquals(pipeline.getType(),
        HddsProtos.ReplicationType.STAND_ALONE);
    Assert.assertEquals(pipeline.getFactor(), factor);
    Assert.assertEquals(pipeline.getPipelineState(),
        Pipeline.PipelineState.OPEN);
    Assert.assertEquals(pipeline.getNodes().size(), factor.getNumber());

    factor = HddsProtos.ReplicationFactor.ONE;
    pipeline = provider.create(factor, createListOfNodes(factor.getNumber()));
    Assert.assertEquals(pipeline.getType(),
        HddsProtos.ReplicationType.STAND_ALONE);
    Assert.assertEquals(pipeline.getFactor(), factor);
    Assert.assertEquals(pipeline.getPipelineState(),
        Pipeline.PipelineState.OPEN);
    Assert.assertEquals(pipeline.getNodes().size(), factor.getNumber());
  }
}