| /* |
| * 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.dubbo.common.serialize.protobuf.support; |
| |
| import com.google.protobuf.BoolValue; |
| import com.google.protobuf.BytesValue; |
| import com.google.protobuf.DoubleValue; |
| import com.google.protobuf.FloatValue; |
| import com.google.protobuf.Int32Value; |
| import com.google.protobuf.Int64Value; |
| import com.google.protobuf.StringValue; |
| |
| import org.apache.dubbo.common.serialize.ObjectInput; |
| import org.apache.dubbo.common.serialize.protobuf.support.wrapper.MapValue; |
| import org.apache.dubbo.common.serialize.protobuf.support.wrapper.ThrowablePB; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.reflect.Type; |
| import java.util.Map; |
| |
| import static org.apache.dubbo.common.constants.CommonConstants.HEARTBEAT_EVENT; |
| import static org.apache.dubbo.common.constants.CommonConstants.MOCK_HEARTBEAT_EVENT; |
| |
| public class GenericProtobufObjectInput implements ObjectInput { |
| private final InputStream is; |
| |
| public GenericProtobufObjectInput(InputStream is) { |
| this.is = is; |
| } |
| |
| @Override |
| public boolean readBool() throws IOException { |
| return read(BoolValue.class).getValue(); |
| } |
| |
| @Override |
| public byte readByte() throws IOException { |
| return (byte) read(Int32Value.class).getValue(); |
| } |
| |
| @Override |
| public short readShort() throws IOException { |
| return (short) read(Int32Value.class).getValue(); |
| } |
| |
| @Override |
| public int readInt() throws IOException { |
| return read(Int32Value.class).getValue(); |
| } |
| |
| @Override |
| public long readLong() throws IOException { |
| return read(Int64Value.class).getValue(); |
| } |
| |
| @Override |
| public float readFloat() throws IOException { |
| return read(FloatValue.class).getValue(); |
| } |
| |
| @Override |
| public double readDouble() throws IOException { |
| return read(DoubleValue.class).getValue(); |
| } |
| |
| @Override |
| public String readUTF() throws IOException { |
| return read(StringValue.class).getValue(); |
| } |
| |
| @Override |
| public byte[] readBytes() throws IOException { |
| return read(BytesValue.class).getValue().toByteArray(); |
| } |
| |
| /** |
| * Avoid using readObject, always try to pass the target class type for the data you want to read. |
| * |
| * @return |
| */ |
| @Override |
| public Object readObject() { |
| throw new UnsupportedOperationException("Provide the protobuf message type you want to read."); |
| } |
| |
| @Override |
| public <T> T readObject(Class<T> cls) throws IOException { |
| return read(cls); |
| } |
| |
| @Override |
| public <T> T readObject(Class<T> cls, Type type) throws IOException { |
| return readObject(cls); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private <T> T read(Class<T> cls) throws IOException { |
| if (!ProtobufUtils.isSupported(cls)) { |
| throw new IllegalArgumentException("This serialization only support google protobuf messages, but the actual input type is :" + cls.getName()); |
| } |
| |
| return ProtobufUtils.deserialize(is, cls); |
| } |
| |
| @Override |
| public Throwable readThrowable() throws IOException { |
| ThrowablePB.ThrowableProto throwableProto = ProtobufUtils.deserialize(is, ThrowablePB.ThrowableProto.class); |
| return ProtobufUtils.convertToException(throwableProto); |
| } |
| |
| @Override |
| public Object readEvent() throws IOException { |
| String eventData = readUTF(); |
| if (eventData.equals(MOCK_HEARTBEAT_EVENT)) { |
| eventData = HEARTBEAT_EVENT; |
| } |
| return eventData; |
| } |
| |
| @Override |
| public Map<String, Object> readAttachments() throws IOException, ClassNotFoundException { |
| MapValue.Map map = ProtobufUtils.deserialize(is, MapValue.Map.class); |
| return ProtobufAttachmentUtils.unwrap(map); |
| } |
| } |