Revert "HDDS-1965. Compile error due to leftover ScmBlockLocationTestIngClient file (#1293)"

This reverts commit 83e452e.

Author: xiaoyuyao

hadoop-ozone/ozone-manager/src/test/java/org/apache/hadoop/ozone/om/ScmBlockLocationTestIngClient.java

@@ -0,0 +1,195 @@
+/*
+ * 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.ozone.om;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hadoop.hdds.client.BlockID;
+import org.apache.hadoop.hdds.client.ContainerBlockID;
+import org.apache.hadoop.hdds.protocol.DatanodeDetails;
+import org.apache.hadoop.hdds.protocol.proto.HddsProtos;
+import org.apache.hadoop.hdds.scm.ScmInfo;
+import org.apache.hadoop.hdds.scm.TestUtils;
+import org.apache.hadoop.hdds.scm.container.common.helpers.AllocatedBlock;
+import org.apache.hadoop.hdds.scm.container.common.helpers.DeleteBlockResult;
+import org.apache.hadoop.hdds.scm.container.common.helpers.ExcludeList;
+import org.apache.hadoop.hdds.scm.pipeline.Pipeline;
+import org.apache.hadoop.hdds.scm.pipeline.PipelineID;
+import org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocol;
+import org.apache.hadoop.ozone.common.BlockGroup;
+import org.apache.hadoop.ozone.common.DeleteBlockGroupResult;
+import org.apache.hadoop.util.Time;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
+
+import static org.apache.hadoop.hdds.protocol.proto
+    .ScmBlockLocationProtocolProtos.DeleteScmBlockResult.Result;
+import static org.apache.hadoop.hdds.protocol.proto
+    .ScmBlockLocationProtocolProtos.DeleteScmBlockResult.Result.success;
+import static org.apache.hadoop.hdds.protocol.proto
+    .ScmBlockLocationProtocolProtos.DeleteScmBlockResult.Result.unknownFailure;
+
+/**
+ * This is a testing client that allows us to intercept calls from OzoneManager
+ * to SCM.
+ * <p>
+ * TODO: OzoneManager#getScmBlockClient -- so that we can load this class up via
+ * config setting into OzoneManager. Right now, we just pass this to
+ * KeyDeletingService only.
+ * <p>
+ * TODO: Move this class to a generic test utils so we can use this class in
+ * other Ozone Manager tests.
+ */
+public class ScmBlockLocationTestingClient implements ScmBlockLocationProtocol {
+  private static final Logger LOG =
+      LoggerFactory.getLogger(ScmBlockLocationTestingClient.class);
+  private final String clusterID;
+  private final String scmId;
+
+  // 0 means no calls will fail, +1 means all calls will fail, +2 means every
+  // second call will fail, +3 means every third and so on.
+  private final int failCallsFrequency;
+  private int currentCall = 0;
+
+  /**
+   * If ClusterID or SCMID is blank a per instance ID is generated.
+   *
+   * @param clusterID - String or blank.
+   * @param scmId - String or Blank.
+   * @param failCallsFrequency - Set to 0 for no failures, 1 for always to fail,
+   * a positive number for that frequency of failure.
+   */
+  public ScmBlockLocationTestingClient(String clusterID, String scmId,
+      int failCallsFrequency) {
+    this.clusterID = StringUtils.isNotBlank(clusterID) ? clusterID :
+        UUID.randomUUID().toString();
+    this.scmId = StringUtils.isNotBlank(scmId) ? scmId :
+        UUID.randomUUID().toString();
+    this.failCallsFrequency = Math.abs(failCallsFrequency);
+    switch (this.failCallsFrequency) {
+    case 0:
+      LOG.debug("Set to no failure mode, all delete block calls will " +
+          "succeed.");
+      break;
+    case 1:
+      LOG.debug("Set to all failure mode. All delete block calls to SCM" +
+          " will fail.");
+      break;
+    default:
+      LOG.debug("Set to Mix mode, every {} -th call will fail",
+          this.failCallsFrequency);
+    }
+
+  }
+
+  /**
+   * Returns Fake blocks to the BlockManager so we get blocks in the Database.
+   * @param size - size of the block.
+   * @param type Replication Type
+   * @param factor - Replication factor
+   * @param owner - String owner.
+   * @param excludeList list of dns/pipelines to exclude
+   * @return
+   * @throws IOException
+   */
+  @Override
+  public List<AllocatedBlock> allocateBlock(long size, int num,
+      HddsProtos.ReplicationType type, HddsProtos.ReplicationFactor factor,
+      String owner, ExcludeList excludeList) throws IOException {
+    DatanodeDetails datanodeDetails = TestUtils.randomDatanodeDetails();
+    Pipeline pipeline = createPipeline(datanodeDetails);
+    long containerID = Time.monotonicNow();
+    long localID = Time.monotonicNow();
+    AllocatedBlock.Builder abb =
+        new AllocatedBlock.Builder()
+            .setContainerBlockID(new ContainerBlockID(containerID, localID))
+            .setPipeline(pipeline);
+    return Collections.singletonList(abb.build());
+  }
+
+  private Pipeline createPipeline(DatanodeDetails datanode) {
+    List<DatanodeDetails> dns = new ArrayList<>();
+    dns.add(datanode);
+    Pipeline pipeline = Pipeline.newBuilder()
+        .setState(Pipeline.PipelineState.OPEN)
+        .setId(PipelineID.randomId())
+        .setType(HddsProtos.ReplicationType.STAND_ALONE)
+        .setFactor(HddsProtos.ReplicationFactor.ONE)
+        .setNodes(dns)
+        .build();
+    return pipeline;
+  }
+
+  @Override
+  public List<DeleteBlockGroupResult> deleteKeyBlocks(
+      List<BlockGroup> keyBlocksInfoList) throws IOException {
+    List<DeleteBlockGroupResult> results = new ArrayList<>();
+    List<DeleteBlockResult> blockResultList = new ArrayList<>();
+    Result result;
+    for (BlockGroup keyBlocks : keyBlocksInfoList) {
+      for (BlockID blockKey : keyBlocks.getBlockIDList()) {
+        currentCall++;
+        switch (this.failCallsFrequency) {
+        case 0:
+          result = success;
+          break;
+        case 1:
+          result = unknownFailure;
+          break;
+        default:
+          if (currentCall % this.failCallsFrequency == 0) {
+            result = unknownFailure;
+          } else {
+            result = success;
+          }
+        }
+        blockResultList.add(new DeleteBlockResult(blockKey, result));
+      }
+      results.add(new DeleteBlockGroupResult(keyBlocks.getGroupID(),
+          blockResultList));
+    }
+    return results;
+  }
+
+  @Override
+  public ScmInfo getScmInfo() throws IOException {
+    ScmInfo.Builder builder =
+        new ScmInfo.Builder()
+            .setClusterId(clusterID)
+            .setScmId(scmId);
+    return builder.build();
+  }
+
+  @Override
+  public List<DatanodeDetails> sortDatanodes(List<String> nodes,
+      String clientMachine) throws IOException {
+    return null;
+  }
+
+  @Override
+  public void close() throws IOException {
+
+  }
+}