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[Feature apache#562] Implement EventMeshMessage protocol adaptor
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102 changes: 102 additions & 0 deletions
102
.../java/org/apache/eventmesh/protocol/eventmeshmessage/EventMeshMessageProtocolAdaptor.java
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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. | ||
| */ | ||
|
|
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| package org.apache.eventmesh.protocol.eventmeshmessage; | ||
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| import io.cloudevents.CloudEvent; | ||
| import org.apache.commons.lang3.StringUtils; | ||
| import org.apache.eventmesh.common.Constants; | ||
| import org.apache.eventmesh.common.command.HttpCommand; | ||
| import org.apache.eventmesh.common.protocol.http.body.Body; | ||
| import org.apache.eventmesh.common.protocol.http.common.RequestCode; | ||
| import org.apache.eventmesh.common.protocol.tcp.EventMeshMessage; | ||
| import org.apache.eventmesh.common.protocol.tcp.Header; | ||
| import org.apache.eventmesh.common.protocol.tcp.Package; | ||
| import org.apache.eventmesh.protocol.api.ProtocolAdaptor; | ||
| import org.apache.eventmesh.protocol.api.exception.ProtocolHandleException; | ||
| import org.apache.eventmesh.protocol.eventmeshmessage.resolver.http.SendMessageBatchProtocolResolver; | ||
| import org.apache.eventmesh.protocol.eventmeshmessage.resolver.http.SendMessageBatchV2ProtocolResolver; | ||
| import org.apache.eventmesh.protocol.eventmeshmessage.resolver.http.SendMessageRequestProtocolResolver; | ||
| import org.apache.eventmesh.protocol.eventmeshmessage.resolver.tcp.TcpMessageProtocolResolver; | ||
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| import java.nio.charset.StandardCharsets; | ||
| import java.util.List; | ||
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| public class EventMeshMessageProtocolAdaptor<T> implements ProtocolAdaptor<T> { | ||
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| @Override | ||
| public CloudEvent toCloudEvent(T protocol) throws ProtocolHandleException { | ||
| if (protocol instanceof Package) { | ||
| Header header = ((Package) protocol).getHeader(); | ||
| Object body = ((Package) protocol).getBody(); | ||
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| return deserializeTcpProtocol(header, body); | ||
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| } else if (protocol instanceof HttpCommand) { | ||
| org.apache.eventmesh.common.protocol.http.header.Header header = ((HttpCommand) protocol).getHeader(); | ||
| Body body = ((HttpCommand) protocol).getBody(); | ||
| String requestCode = ((HttpCommand) protocol).getRequestCode(); | ||
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| return deserializeHttpProtocol(requestCode, header, body); | ||
| } else { | ||
| throw new ProtocolHandleException(String.format("protocol class: %s", protocol.getClass())); | ||
| } | ||
| } | ||
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| private CloudEvent deserializeTcpProtocol(Header header, Object body) throws ProtocolHandleException { | ||
| return TcpMessageProtocolResolver.buildEvent(header, body); | ||
| } | ||
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| private CloudEvent deserializeHttpProtocol(String requestCode, org.apache.eventmesh.common.protocol.http.header.Header header, Body body) throws ProtocolHandleException { | ||
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| if (String.valueOf(RequestCode.MSG_BATCH_SEND.getRequestCode()).equals(requestCode)) { | ||
| return SendMessageBatchProtocolResolver.buildEvent(header, body); | ||
| } else if (String.valueOf(RequestCode.MSG_BATCH_SEND_V2.getRequestCode()).equals(requestCode)) { | ||
| return SendMessageBatchV2ProtocolResolver.buildEvent(header, body); | ||
| } else if (String.valueOf(RequestCode.MSG_SEND_SYNC.getRequestCode()).equals(requestCode)) { | ||
| return SendMessageRequestProtocolResolver.buildEvent(header, body); | ||
| } else if (String.valueOf(RequestCode.MSG_SEND_ASYNC.getRequestCode()).equals(requestCode)) { | ||
| return SendMessageRequestProtocolResolver.buildEvent(header, body); | ||
| } else { | ||
| throw new ProtocolHandleException(String.format("unsupported requestCode: %s", requestCode)); | ||
| } | ||
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|
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| } | ||
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| @Override | ||
| public List<CloudEvent> toBatchCloudEvent(T protocol) throws ProtocolHandleException { | ||
| return null; | ||
| } | ||
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| @Override | ||
| public Object fromCloudEvent(CloudEvent cloudEvent) throws ProtocolHandleException { | ||
| String protocolDesc = cloudEvent.getExtension(Constants.PROTOCOL_DESC).toString(); | ||
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| if (StringUtils.equals("http", protocolDesc)) { | ||
| return new String(cloudEvent.getData().toBytes(), StandardCharsets.UTF_8); | ||
| } else if (StringUtils.equals("tcp", protocolDesc)) { | ||
| return TcpMessageProtocolResolver.buildEventMeshMessage(cloudEvent); | ||
| } else { | ||
| throw new ProtocolHandleException(String.format("Unsupported protocolDesc: %s", protocolDesc)); | ||
| } | ||
| } | ||
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| @Override | ||
| public String getProtocolType() { | ||
| return EventMeshMessageProtocolConstant.PROTOCOL_NAME; | ||
| } | ||
| } |
23 changes: 23 additions & 0 deletions
23
...java/org/apache/eventmesh/protocol/eventmeshmessage/EventMeshMessageProtocolConstant.java
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| @@ -0,0 +1,23 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.eventmesh.protocol.eventmeshmessage; | ||
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| public enum EventMeshMessageProtocolConstant { | ||
| ; | ||
| public static final String PROTOCOL_NAME = "eventmeshmessage"; | ||
| } |
11 changes: 11 additions & 0 deletions
11
...e/eventmesh/protocol/eventmeshmessage/resolver/http/SendMessageBatchProtocolResolver.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| package org.apache.eventmesh.protocol.eventmeshmessage.resolver.http; | ||
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| import io.cloudevents.CloudEvent; | ||
| import org.apache.eventmesh.common.protocol.http.body.Body; | ||
| import org.apache.eventmesh.common.protocol.http.header.Header; | ||
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| public class SendMessageBatchProtocolResolver { | ||
| public static CloudEvent buildEvent(Header header, Body body) { | ||
| return null; | ||
| } | ||
| } |
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