| /* |
| * 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.ratis; |
| |
| import org.apache.hadoop.hdds.protocol.datanode.proto.ContainerProtos.ContainerCommandRequestProto; |
| import org.apache.hadoop.hdds.protocol.datanode.proto.ContainerProtos.PutSmallFileRequestProto; |
| import org.apache.hadoop.hdds.protocol.datanode.proto.ContainerProtos.Type; |
| import org.apache.hadoop.hdds.protocol.datanode.proto.ContainerProtos.WriteChunkRequestProto; |
| import org.apache.ratis.protocol.Message; |
| import org.apache.ratis.protocol.RaftGroupId; |
| import org.apache.ratis.thirdparty.com.google.protobuf.ByteString; |
| import org.apache.ratis.thirdparty.com.google.protobuf.InvalidProtocolBufferException; |
| import org.apache.ratis.util.JavaUtils; |
| |
| import java.util.Objects; |
| import java.util.function.Supplier; |
| |
| /** |
| * Implementing the {@link Message} interface |
| * for {@link ContainerCommandRequestProto}. |
| */ |
| public final class ContainerCommandRequestMessage implements Message { |
| public static ContainerCommandRequestMessage toMessage( |
| ContainerCommandRequestProto request, String traceId) { |
| final ContainerCommandRequestProto.Builder b |
| = ContainerCommandRequestProto.newBuilder(request); |
| if (traceId != null) { |
| b.setTraceID(traceId); |
| } |
| |
| ByteString data = ByteString.EMPTY; |
| if (request.getCmdType() == Type.WriteChunk) { |
| final WriteChunkRequestProto w = request.getWriteChunk(); |
| data = w.getData(); |
| b.setWriteChunk(w.toBuilder().clearData()); |
| } else if (request.getCmdType() == Type.PutSmallFile) { |
| final PutSmallFileRequestProto p = request.getPutSmallFile(); |
| data = p.getData(); |
| b.setPutSmallFile(p.toBuilder().setData(ByteString.EMPTY)); |
| } |
| return new ContainerCommandRequestMessage(b.build(), data); |
| } |
| |
| public static ContainerCommandRequestProto toProto( |
| ByteString bytes, RaftGroupId groupId) |
| throws InvalidProtocolBufferException { |
| final int i = 4 + bytes.asReadOnlyByteBuffer().getInt(); |
| final ContainerCommandRequestProto header |
| = ContainerCommandRequestProto.parseFrom(bytes.substring(4, i)); |
| // TODO: setting pipeline id can be avoided if the client is sending it. |
| // In such case, just have to validate the pipeline id. |
| final ContainerCommandRequestProto.Builder b = header.toBuilder(); |
| if (groupId != null) { |
| b.setPipelineID(groupId.getUuid().toString()); |
| } |
| final ByteString data = bytes.substring(i); |
| if (header.getCmdType() == Type.WriteChunk) { |
| b.setWriteChunk(b.getWriteChunkBuilder().setData(data)); |
| } else if (header.getCmdType() == Type.PutSmallFile) { |
| b.setPutSmallFile(b.getPutSmallFileBuilder().setData(data)); |
| } |
| return b.build(); |
| } |
| |
| private final ContainerCommandRequestProto header; |
| private final ByteString data; |
| private final Supplier<ByteString> contentSupplier |
| = JavaUtils.memoize(this::buildContent); |
| |
| private ContainerCommandRequestMessage( |
| ContainerCommandRequestProto header, ByteString data) { |
| this.header = Objects.requireNonNull(header, "header == null"); |
| this.data = Objects.requireNonNull(data, "data == null"); |
| } |
| |
| private ByteString buildContent() { |
| final ByteString headerBytes = header.toByteString(); |
| return RatisHelper.int2ByteString(headerBytes.size()) |
| .concat(headerBytes) |
| .concat(data); |
| } |
| |
| @Override |
| public ByteString getContent() { |
| return contentSupplier.get(); |
| } |
| |
| @Override |
| public String toString() { |
| return header + ", data.size=" + data.size(); |
| } |
| } |