| /* |
| * 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.drill.exec.serialization; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import io.protostuff.JsonIOUtil; |
| import io.protostuff.Schema; |
| import org.apache.drill.shaded.guava.com.google.common.base.Objects; |
| import org.apache.drill.shaded.guava.com.google.common.base.Preconditions; |
| import com.google.protobuf.Message; |
| |
| public class ProtoSerializer<T, B extends Message.Builder> implements InstanceSerializer<T> { |
| private final Schema<B> readSchema; |
| private final Schema<T> writeSchema; |
| |
| public ProtoSerializer(final Schema<B> readSchema, final Schema<T> writeSchema) { |
| this.readSchema = Preconditions.checkNotNull(readSchema); |
| this.writeSchema = Preconditions.checkNotNull(writeSchema); |
| } |
| |
| @Override |
| public T deserialize(final byte[] raw) throws IOException { |
| final B builder = readSchema.newMessage(); |
| JsonIOUtil.mergeFrom(raw, builder, readSchema, false); |
| return (T)builder.build(); |
| } |
| |
| @Override |
| public byte[] serialize(final T instance) throws IOException { |
| final ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| JsonIOUtil.writeTo(out, instance, writeSchema, false); |
| return out.toByteArray(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(readSchema, writeSchema); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| if (obj instanceof ProtoSerializer && obj.getClass().equals(getClass())) { |
| final ProtoSerializer<T, B> other = (ProtoSerializer<T, B>)obj; |
| return Objects.equal(readSchema, other.readSchema) && Objects.equal(writeSchema, other.writeSchema); |
| } |
| return false; |
| } |
| } |