| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.freon; |
| |
| import java.io.IOException; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos.ContainerBlockID; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos.GetScmInfoResponseProto; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.AllocateBlockResponse; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.AllocateScmBlockResponseProto; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.AllocateScmBlockResponseProto.Builder; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.SCMBlockLocationRequest; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.SCMBlockLocationResponse; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.Status; |
| import org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos.Type; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Fake SCM client to return a simulated block location. |
| */ |
| public final class FakeScmBlockLocationProtocolClient { |
| |
| private static final Logger LOGGER = |
| LoggerFactory.getLogger(FakeScmBlockLocationProtocolClient.class); |
| |
| public static final int BLOCK_PER_CONTAINER = 1000; |
| |
| private static AtomicLong counter = new AtomicLong(); |
| |
| private FakeScmBlockLocationProtocolClient() { |
| } |
| |
| public static SCMBlockLocationResponse submitRequest( |
| SCMBlockLocationRequest req) |
| throws IOException { |
| try { |
| if (req.getCmdType() == Type.GetScmInfo) { |
| return SCMBlockLocationResponse.newBuilder() |
| .setCmdType(req.getCmdType()) |
| .setStatus(Status.OK) |
| .setSuccess(true) |
| .setGetScmInfoResponse( |
| GetScmInfoResponseProto.newBuilder() |
| .setScmId("scm-id") |
| .setClusterId("cluster-id") |
| .build() |
| ) |
| .build(); |
| } else if (req.getCmdType() == Type.AllocateScmBlock) { |
| Builder allocateBlockResponse = |
| AllocateScmBlockResponseProto.newBuilder(); |
| for (int i = 0; |
| i < req.getAllocateScmBlockRequest().getNumBlocks(); i++) { |
| long seq = counter.incrementAndGet(); |
| |
| allocateBlockResponse.addBlocks(AllocateBlockResponse.newBuilder() |
| .setPipeline(FakeClusterTopology.INSTANCE.getRandomPipeline()) |
| .setContainerBlockID(ContainerBlockID.newBuilder() |
| .setContainerID(seq / BLOCK_PER_CONTAINER) |
| .setLocalID(seq)) |
| ); |
| } |
| return SCMBlockLocationResponse.newBuilder() |
| .setCmdType(req.getCmdType()) |
| .setStatus(Status.OK) |
| .setSuccess(true) |
| .setAllocateScmBlockResponse( |
| allocateBlockResponse |
| ) |
| .build(); |
| } else { |
| throw new IllegalArgumentException( |
| "Unsupported request. Fake answer is not implemented for " + req |
| .getCmdType()); |
| } |
| } catch (Exception ex) { |
| LOGGER.error("Error on creating fake SCM response", ex); |
| return null; |
| } |
| } |
| |
| } |