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支持隐式参数的回传（从服务端传到消费端），apache#889、apache#895
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hsrong
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Dec 22, 2017
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257 changes: 138 additions & 119 deletions
257
...o-rpc-default/src/main/java/com/alibaba/dubbo/rpc/protocol/dubbo/DecodeableRpcResult.java
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|---|---|---|
| @@ -1,119 +1,138 @@ | ||
| /* | ||
| * 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 com.alibaba.dubbo.rpc.protocol.dubbo; | ||
|
|
||
| import com.alibaba.dubbo.common.logger.Logger; | ||
| import com.alibaba.dubbo.common.logger.LoggerFactory; | ||
| import com.alibaba.dubbo.common.serialize.ObjectInput; | ||
| import com.alibaba.dubbo.common.utils.Assert; | ||
| import com.alibaba.dubbo.common.utils.StringUtils; | ||
| import com.alibaba.dubbo.remoting.Channel; | ||
| import com.alibaba.dubbo.remoting.Codec; | ||
| import com.alibaba.dubbo.remoting.Decodeable; | ||
| import com.alibaba.dubbo.remoting.exchange.Response; | ||
| import com.alibaba.dubbo.remoting.transport.CodecSupport; | ||
| import com.alibaba.dubbo.rpc.Invocation; | ||
| import com.alibaba.dubbo.rpc.RpcResult; | ||
| import com.alibaba.dubbo.rpc.support.RpcUtils; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.lang.reflect.Type; | ||
|
|
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| public class DecodeableRpcResult extends RpcResult implements Codec, Decodeable { | ||
|
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| private static final Logger log = LoggerFactory.getLogger(DecodeableRpcResult.class); | ||
|
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| private Channel channel; | ||
|
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| private byte serializationType; | ||
|
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| private InputStream inputStream; | ||
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| private Response response; | ||
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| private Invocation invocation; | ||
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| private volatile boolean hasDecoded; | ||
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| public DecodeableRpcResult(Channel channel, Response response, InputStream is, Invocation invocation, byte id) { | ||
| Assert.notNull(channel, "channel == null"); | ||
| Assert.notNull(response, "response == null"); | ||
| Assert.notNull(is, "inputStream == null"); | ||
| this.channel = channel; | ||
| this.response = response; | ||
| this.inputStream = is; | ||
| this.invocation = invocation; | ||
| this.serializationType = id; | ||
| } | ||
|
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| public void encode(Channel channel, OutputStream output, Object message) throws IOException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| public Object decode(Channel channel, InputStream input) throws IOException { | ||
| ObjectInput in = CodecSupport.getSerialization(channel.getUrl(), serializationType) | ||
| .deserialize(channel.getUrl(), input); | ||
|
|
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| byte flag = in.readByte(); | ||
| switch (flag) { | ||
| case DubboCodec.RESPONSE_NULL_VALUE: | ||
| break; | ||
| case DubboCodec.RESPONSE_VALUE: | ||
| try { | ||
| Type[] returnType = RpcUtils.getReturnTypes(invocation); | ||
| setValue(returnType == null || returnType.length == 0 ? in.readObject() : | ||
| (returnType.length == 1 ? in.readObject((Class<?>) returnType[0]) | ||
| : in.readObject((Class<?>) returnType[0], returnType[1]))); | ||
| } catch (ClassNotFoundException e) { | ||
| throw new IOException(StringUtils.toString("Read response data failed.", e)); | ||
| } | ||
| break; | ||
| case DubboCodec.RESPONSE_WITH_EXCEPTION: | ||
| try { | ||
| Object obj = in.readObject(); | ||
| if (obj instanceof Throwable == false) | ||
| throw new IOException("Response data error, expect Throwable, but get " + obj); | ||
| setException((Throwable) obj); | ||
| } catch (ClassNotFoundException e) { | ||
| throw new IOException(StringUtils.toString("Read response data failed.", e)); | ||
| } | ||
| break; | ||
| default: | ||
| throw new IOException("Unknown result flag, expect '0' '1' '2', get " + flag); | ||
| } | ||
| return this; | ||
| } | ||
|
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| public void decode() throws Exception { | ||
| if (!hasDecoded && channel != null && inputStream != null) { | ||
| try { | ||
| decode(channel, inputStream); | ||
| } catch (Throwable e) { | ||
| if (log.isWarnEnabled()) { | ||
| log.warn("Decode rpc result failed: " + e.getMessage(), e); | ||
| } | ||
| response.setStatus(Response.CLIENT_ERROR); | ||
| response.setErrorMessage(StringUtils.toString(e)); | ||
| } finally { | ||
| hasDecoded = true; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } | ||
| /* | ||
| * 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 com.alibaba.dubbo.rpc.protocol.dubbo; | ||
|
|
||
| import com.alibaba.dubbo.common.logger.Logger; | ||
| import com.alibaba.dubbo.common.logger.LoggerFactory; | ||
| import com.alibaba.dubbo.common.serialize.ObjectInput; | ||
| import com.alibaba.dubbo.common.utils.Assert; | ||
| import com.alibaba.dubbo.common.utils.StringUtils; | ||
| import com.alibaba.dubbo.remoting.Channel; | ||
| import com.alibaba.dubbo.remoting.Codec; | ||
| import com.alibaba.dubbo.remoting.Decodeable; | ||
| import com.alibaba.dubbo.remoting.exchange.Response; | ||
| import com.alibaba.dubbo.remoting.transport.CodecSupport; | ||
| import com.alibaba.dubbo.rpc.Invocation; | ||
| import com.alibaba.dubbo.rpc.RpcResult; | ||
| import com.alibaba.dubbo.rpc.support.RpcUtils; | ||
|
|
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| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.lang.reflect.Type; | ||
| import java.util.HashMap; | ||
|
|
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| public class DecodeableRpcResult extends RpcResult implements Codec, Decodeable { | ||
|
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| private static final Logger log = LoggerFactory.getLogger(DecodeableRpcResult.class); | ||
|
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| private Channel channel; | ||
|
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| private byte serializationType; | ||
|
|
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| private InputStream inputStream; | ||
|
|
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| private Response response; | ||
|
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| private Invocation invocation; | ||
|
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| private volatile boolean hasDecoded; | ||
|
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| public DecodeableRpcResult(Channel channel, Response response, InputStream is, Invocation invocation, byte id) { | ||
| Assert.notNull(channel, "channel == null"); | ||
| Assert.notNull(response, "response == null"); | ||
| Assert.notNull(is, "inputStream == null"); | ||
| this.channel = channel; | ||
| this.response = response; | ||
| this.inputStream = is; | ||
| this.invocation = invocation; | ||
| this.serializationType = id; | ||
| } | ||
|
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| public void encode(Channel channel, OutputStream output, Object message) throws IOException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| public Object decode(Channel channel, InputStream input) throws IOException { | ||
| ObjectInput in = CodecSupport.getSerialization(channel.getUrl(), serializationType) | ||
| .deserialize(channel.getUrl(), input); | ||
|
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||
| byte flag = in.readByte(); | ||
| switch (flag) { | ||
| case DubboCodec.RESPONSE_NULL_VALUE: | ||
| break; | ||
| case DubboCodec.RESPONSE_VALUE: | ||
| try { | ||
| Type[] returnType = RpcUtils.getReturnTypes(invocation); | ||
| setValue(returnType == null || returnType.length == 0 ? in.readObject() : | ||
| (returnType.length == 1 ? in.readObject((Class<?>) returnType[0]) | ||
| : in.readObject((Class<?>) returnType[0], returnType[1]))); | ||
| } catch (ClassNotFoundException e) { | ||
| throw new IOException(StringUtils.toString("Read response data failed.", e)); | ||
| } | ||
| break; | ||
| case DubboCodec.RESPONSE_WITH_EXCEPTION: | ||
| try { | ||
| Object obj = in.readObject(); | ||
| if (obj instanceof Throwable == false) | ||
| throw new IOException("Response data error, expect Throwable, but get " + obj); | ||
| setException((Throwable) obj); | ||
| } catch (ClassNotFoundException e) { | ||
| throw new IOException(StringUtils.toString("Read response data failed.", e)); | ||
| } | ||
| break; | ||
| default: | ||
| throw new IOException("Unknown result flag, expect '0' '1' '2', get " + flag); | ||
| } | ||
| byte attachmentFlag = in.readByte(); | ||
| switch (attachmentFlag) { | ||
| case DubboCodec.RESPONSE_ATTACHMENTS_NO_EXIST: | ||
| break; | ||
| case DubboCodec.RESPONSE_ATTACHMENTS_EXIST: | ||
| try { | ||
| HashMap<String, String> attachments = in.readObject(HashMap.class); | ||
| if(attachments != null | ||
| && attachments.size() > 0){ | ||
| this.getAttachments().putAll(attachments); | ||
| } | ||
| } catch (ClassNotFoundException e) { | ||
| throw new IOException(StringUtils.toString("Read response data failed.", e)); | ||
| } | ||
| break; | ||
| default: | ||
| throw new IOException("Unknown result attachments flag, expect '3' '4', get " + attachmentFlag); | ||
| } | ||
| return this; | ||
| } | ||
|
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| public void decode() throws Exception { | ||
| if (!hasDecoded && channel != null && inputStream != null) { | ||
| try { | ||
| decode(channel, inputStream); | ||
| } catch (Throwable e) { | ||
| if (log.isWarnEnabled()) { | ||
| log.warn("Decode rpc result failed: " + e.getMessage(), e); | ||
| } | ||
| response.setStatus(Response.CLIENT_ERROR); | ||
| response.setErrorMessage(StringUtils.toString(e)); | ||
| } finally { | ||
| hasDecoded = true; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } |
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Provider向Consumer回传，也是通过Attachment，是吧