OMID-319 Use shaded protobuf-java from phoenix-thirdparty #202
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| /* | ||
| * 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.omid.protobuf; | ||
|
|
||
| import org.apache.phoenix.thirdparty.com.google.protobuf.ExtensionRegistry; | ||
| import org.apache.phoenix.thirdparty.com.google.protobuf.ExtensionRegistryLite; | ||
| import org.apache.phoenix.thirdparty.com.google.protobuf.Message; | ||
| import org.apache.phoenix.thirdparty.com.google.protobuf.MessageLite; | ||
| import io.netty.buffer.ByteBuf; | ||
| import io.netty.buffer.ByteBufUtil; | ||
| import io.netty.channel.ChannelHandler.Sharable; | ||
| import io.netty.channel.ChannelHandlerContext; | ||
| import io.netty.channel.ChannelPipeline; | ||
| import io.netty.handler.codec.ByteToMessageDecoder; | ||
| import io.netty.handler.codec.LengthFieldBasedFrameDecoder; | ||
| import io.netty.handler.codec.LengthFieldPrepender; | ||
| import io.netty.handler.codec.MessageToMessageDecoder; | ||
| import io.netty.util.internal.ObjectUtil; | ||
|
|
||
| import java.util.List; | ||
|
|
||
| /** | ||
| * This class is from netty-codec, but the imports for protobuf are changed to use phoenix-thirdparty | ||
| * so netty would not use other protobuf that might be present on the classpath. | ||
| * | ||
| * Decodes a received {@link ByteBuf} into a | ||
| * <a href="https://github.com/google/protobuf">Google Protocol Buffers</a> | ||
| * {@link Message} and {@link MessageLite}. Please note that this decoder must | ||
| * be used with a proper {@link ByteToMessageDecoder} such as {@link OmidProtobufVarint32FrameDecoder} | ||
| * or {@link LengthFieldBasedFrameDecoder} if you are using a stream-based | ||
| * transport such as TCP/IP. A typical setup for TCP/IP would be: | ||
| * <pre> | ||
| * {@link ChannelPipeline} pipeline = ...; | ||
| * | ||
| * // Decoders | ||
| * pipeline.addLast("frameDecoder", | ||
| * new {@link LengthFieldBasedFrameDecoder}(1048576, 0, 4, 0, 4)); | ||
| * pipeline.addLast("protobufDecoder", | ||
| * new {@link OmidProtobufDecoder}(MyMessage.getDefaultInstance())); | ||
| * | ||
| * // Encoder | ||
| * pipeline.addLast("frameEncoder", new {@link LengthFieldPrepender}(4)); | ||
| * pipeline.addLast("protobufEncoder", new {@link OmidProtobufEncoder}()); | ||
| * </pre> | ||
| * and then you can use a {@code MyMessage} instead of a {@link ByteBuf} | ||
| * as a message: | ||
| * <pre> | ||
| * void channelRead({@link ChannelHandlerContext} ctx, Object msg) { | ||
| * MyMessage req = (MyMessage) msg; | ||
| * MyMessage res = MyMessage.newBuilder().setText( | ||
| * "Did you say '" + req.getText() + "'?").build(); | ||
| * ch.write(res); | ||
| * } | ||
| * </pre> | ||
| */ | ||
| @Sharable | ||
| public class OmidProtobufDecoder extends MessageToMessageDecoder<ByteBuf> { | ||
|
|
||
| private static final boolean HAS_PARSER; | ||
|
|
||
| static { | ||
| boolean hasParser = false; | ||
| try { | ||
| // MessageLite.getParserForType() is not available until protobuf 2.5.0. | ||
| MessageLite.class.getDeclaredMethod("getParserForType"); | ||
| hasParser = true; | ||
| } catch (Throwable t) { | ||
| // Ignore | ||
| } | ||
|
|
||
| HAS_PARSER = hasParser; | ||
| } | ||
|
|
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| private final MessageLite prototype; | ||
| private final ExtensionRegistryLite extensionRegistry; | ||
|
|
||
| /** | ||
| * Creates a new instance. | ||
| */ | ||
| public OmidProtobufDecoder(MessageLite prototype) { | ||
| this(prototype, null); | ||
| } | ||
|
|
||
| public OmidProtobufDecoder(MessageLite prototype, ExtensionRegistry extensionRegistry) { | ||
| this(prototype, (ExtensionRegistryLite) extensionRegistry); | ||
| } | ||
|
|
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| public OmidProtobufDecoder(MessageLite prototype, ExtensionRegistryLite extensionRegistry) { | ||
| this.prototype = ObjectUtil.checkNotNull(prototype, "prototype").getDefaultInstanceForType(); | ||
| this.extensionRegistry = extensionRegistry; | ||
| } | ||
|
|
||
| @Override | ||
| protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> out) | ||
| throws Exception { | ||
| final byte[] array; | ||
| final int offset; | ||
| final int length = msg.readableBytes(); | ||
| if (msg.hasArray()) { | ||
| array = msg.array(); | ||
| offset = msg.arrayOffset() + msg.readerIndex(); | ||
| } else { | ||
| array = ByteBufUtil.getBytes(msg, msg.readerIndex(), length, false); | ||
| offset = 0; | ||
| } | ||
|
|
||
| if (extensionRegistry == null) { | ||
| if (HAS_PARSER) { | ||
| out.add(prototype.getParserForType().parseFrom(array, offset, length)); | ||
| } else { | ||
| out.add(prototype.newBuilderForType().mergeFrom(array, offset, length).build()); | ||
| } | ||
| } else { | ||
| if (HAS_PARSER) { | ||
| out.add(prototype.getParserForType().parseFrom( | ||
| array, offset, length, extensionRegistry)); | ||
| } else { | ||
| out.add(prototype.newBuilderForType().mergeFrom( | ||
| array, offset, length, extensionRegistry).build()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * 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.omid.protobuf; | ||
|
|
||
| import org.apache.phoenix.thirdparty.com.google.protobuf.Message; | ||
| import org.apache.phoenix.thirdparty.com.google.protobuf.MessageLite; | ||
| import org.apache.phoenix.thirdparty.com.google.protobuf.MessageLiteOrBuilder; | ||
| import io.netty.buffer.ByteBuf; | ||
| import io.netty.channel.ChannelHandler.Sharable; | ||
| import io.netty.channel.ChannelHandlerContext; | ||
| import io.netty.channel.ChannelPipeline; | ||
| import io.netty.handler.codec.LengthFieldBasedFrameDecoder; | ||
| import io.netty.handler.codec.LengthFieldPrepender; | ||
| import io.netty.handler.codec.MessageToMessageEncoder; | ||
|
|
||
| import java.util.List; | ||
|
|
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| import static io.netty.buffer.Unpooled.wrappedBuffer; | ||
|
|
||
| /** | ||
|
Contributor
There was a problem hiding this comment. Please add a note explaining where this was copied from and why |
||
| * This class is from netty-codec, but the imports for protobuf are changed to use phoenix-thirdparty | ||
| * so netty would not use other protobuf that might be present on the classpath. | ||
| * | ||
| * Encodes the requested <a href="https://github.com/google/protobuf">Google | ||
| * Protocol Buffers</a> {@link Message} and {@link MessageLite} into a | ||
| * {@link ByteBuf}. A typical setup for TCP/IP would be: | ||
| * <pre> | ||
| * {@link ChannelPipeline} pipeline = ...; | ||
| * | ||
| * // Decoders | ||
| * pipeline.addLast("frameDecoder", | ||
| * new {@link LengthFieldBasedFrameDecoder}(1048576, 0, 4, 0, 4)); | ||
| * pipeline.addLast("protobufDecoder", | ||
| * new {@link OmidProtobufDecoder}(MyMessage.getDefaultInstance())); | ||
| * | ||
| * // Encoder | ||
| * pipeline.addLast("frameEncoder", new {@link LengthFieldPrepender}(4)); | ||
| * pipeline.addLast("protobufEncoder", new {@link OmidProtobufEncoder}()); | ||
| * </pre> | ||
| * and then you can use a {@code MyMessage} instead of a {@link ByteBuf} | ||
| * as a message: | ||
| * <pre> | ||
| * void channelRead({@link ChannelHandlerContext} ctx, Object msg) { | ||
| * MyMessage req = (MyMessage) msg; | ||
| * MyMessage res = MyMessage.newBuilder().setText( | ||
| * "Did you say '" + req.getText() + "'?").build(); | ||
| * ch.write(res); | ||
| * } | ||
| * </pre> | ||
| */ | ||
| @Sharable | ||
| public class OmidProtobufEncoder extends MessageToMessageEncoder<MessageLiteOrBuilder> { | ||
| @Override | ||
| protected void encode(ChannelHandlerContext ctx, MessageLiteOrBuilder msg, List<Object> out) | ||
| throws Exception { | ||
| if (msg instanceof MessageLite) { | ||
| out.add(wrappedBuffer(((MessageLite) msg).toByteArray())); | ||
| return; | ||
| } | ||
| if (msg instanceof MessageLite.Builder) { | ||
| out.add(wrappedBuffer(((MessageLite.Builder) msg).build().toByteArray())); | ||
| } | ||
| } | ||
| } | ||
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