dipankr commented on code in PR #3709:
URL: https://github.com/apache/eventmesh/pull/3709#discussion_r1165129210


##########
eventmesh-protocol-plugin/eventmesh-protocol-meshmessage/src/main/java/org/apache/eventmesh/protocol/meshmessage/resolver/http/SendMessageRequestProtocolResolver.java:
##########
@@ -42,98 +42,59 @@ public static CloudEvent buildEvent(Header header, Body 
body) throws ProtocolHan
             SendMessageRequestHeader sendMessageRequestHeader = 
(SendMessageRequestHeader) header;
             SendMessageRequestBody sendMessageRequestBody = 
(SendMessageRequestBody) body;
 
-            String protocolType = sendMessageRequestHeader.getProtocolType();
-            String protocolDesc = sendMessageRequestHeader.getProtocolDesc();
-            String protocolVersion = 
sendMessageRequestHeader.getProtocolVersion();
-
-            String code = sendMessageRequestHeader.getCode();
-            String env = sendMessageRequestHeader.getEnv();
-            String idc = sendMessageRequestHeader.getIdc();
-            String ip = sendMessageRequestHeader.getIp();
-            String pid = sendMessageRequestHeader.getPid();
-            String sys = sendMessageRequestHeader.getSys();
-            String username = sendMessageRequestHeader.getUsername();
-            String passwd = sendMessageRequestHeader.getPasswd();
-            ProtocolVersion version = sendMessageRequestHeader.getVersion();
-            String language = sendMessageRequestHeader.getLanguage();
-
-            String content = sendMessageRequestBody.getContent();
-
-            CloudEvent event = null;
             CloudEventBuilder cloudEventBuilder;
-            if (StringUtils.equals(SpecVersion.V1.toString(), 
protocolVersion)) {
-                cloudEventBuilder = CloudEventBuilder.v1();
-
-                cloudEventBuilder = 
cloudEventBuilder.withId(sendMessageRequestBody.getBizSeqNo())
-                    .withSubject(sendMessageRequestBody.getTopic())
-                    .withType("eventmeshmessage")
-                    .withSource(URI.create("/"))
-                    .withData(content.getBytes(StandardCharsets.UTF_8))
-                    .withExtension(ProtocolKey.REQUEST_CODE, code)
-                    .withExtension(ProtocolKey.ClientInstanceKey.ENV, env)
-                    .withExtension(ProtocolKey.ClientInstanceKey.IDC, idc)
-                    .withExtension(ProtocolKey.ClientInstanceKey.IP, ip)
-                    .withExtension(ProtocolKey.ClientInstanceKey.PID, pid)
-                    .withExtension(ProtocolKey.ClientInstanceKey.SYS, sys)
-                    .withExtension(ProtocolKey.ClientInstanceKey.USERNAME, 
username)
-                    .withExtension(ProtocolKey.ClientInstanceKey.PASSWD, 
passwd)
-                    .withExtension(ProtocolKey.VERSION, version.getVersion())
-                    .withExtension(ProtocolKey.LANGUAGE, language)
-                    .withExtension(ProtocolKey.PROTOCOL_TYPE, protocolType)
-                    .withExtension(ProtocolKey.PROTOCOL_DESC, protocolDesc)
-                    .withExtension(ProtocolKey.PROTOCOL_VERSION, 
protocolVersion)
-                    .withExtension(SendMessageRequestBody.BIZSEQNO, 
sendMessageRequestBody.getBizSeqNo())
-                    .withExtension(SendMessageRequestBody.UNIQUEID, 
sendMessageRequestBody.getUniqueId())
-                    .withExtension(SendMessageRequestBody.PRODUCERGROUP,
-                        sendMessageRequestBody.getProducerGroup())
-                    .withExtension(SendMessageRequestBody.TTL, 
sendMessageRequestBody.getTtl());
-                if (StringUtils.isNotEmpty(sendMessageRequestBody.getTag())) {
-                    cloudEventBuilder = 
cloudEventBuilder.withExtension(SendMessageRequestBody.TAG, 
sendMessageRequestBody.getTag());
-                }
-                if (sendMessageRequestBody.getExtFields() != null && 
sendMessageRequestBody.getExtFields().size() > 0) {
-                    for (Map.Entry<String, String> entry : 
sendMessageRequestBody.getExtFields().entrySet()) {
-                        cloudEventBuilder = 
cloudEventBuilder.withExtension(entry.getKey(), entry.getValue());
-                    }
-                }
-                event = cloudEventBuilder.build();
-            } else if (StringUtils.equals(SpecVersion.V03.toString(), 
protocolVersion)) {
-                cloudEventBuilder = CloudEventBuilder.v03();
-                cloudEventBuilder = 
cloudEventBuilder.withId(sendMessageRequestBody.getBizSeqNo())
-                    .withSubject(sendMessageRequestBody.getTopic())
-                    .withType("eventmeshmessage")
-                    .withSource(URI.create("/"))
-                    .withData(content.getBytes(StandardCharsets.UTF_8))
-                    .withExtension(ProtocolKey.REQUEST_CODE, code)
-                    .withExtension(ProtocolKey.ClientInstanceKey.ENV, env)
-                    .withExtension(ProtocolKey.ClientInstanceKey.IDC, idc)
-                    .withExtension(ProtocolKey.ClientInstanceKey.IP, ip)
-                    .withExtension(ProtocolKey.ClientInstanceKey.PID, pid)
-                    .withExtension(ProtocolKey.ClientInstanceKey.SYS, sys)
-                    .withExtension(ProtocolKey.ClientInstanceKey.USERNAME, 
username)
-                    .withExtension(ProtocolKey.ClientInstanceKey.PASSWD, 
passwd)
-                    .withExtension(ProtocolKey.VERSION, version.getVersion())
-                    .withExtension(ProtocolKey.LANGUAGE, language)
-                    .withExtension(ProtocolKey.PROTOCOL_TYPE, protocolType)
-                    .withExtension(ProtocolKey.PROTOCOL_DESC, protocolDesc)
-                    .withExtension(ProtocolKey.PROTOCOL_VERSION, 
protocolVersion)
-                    .withExtension(SendMessageRequestBody.BIZSEQNO, 
sendMessageRequestBody.getBizSeqNo())
-                    .withExtension(SendMessageRequestBody.UNIQUEID, 
sendMessageRequestBody.getUniqueId())
-                    .withExtension(SendMessageRequestBody.PRODUCERGROUP,
-                        sendMessageRequestBody.getProducerGroup())
-                    .withExtension(SendMessageRequestBody.TTL, 
sendMessageRequestBody.getTtl());
-                if (StringUtils.isNotEmpty(sendMessageRequestBody.getTag())) {
-                    cloudEventBuilder = 
cloudEventBuilder.withExtension(SendMessageRequestBody.TAG, 
sendMessageRequestBody.getTag());
-                }
-                if (sendMessageRequestBody.getExtFields() != null && 
sendMessageRequestBody.getExtFields().size() > 0) {
-                    for (Map.Entry<String, String> entry : 
sendMessageRequestBody.getExtFields().entrySet()) {
-                        cloudEventBuilder = 
cloudEventBuilder.withExtension(entry.getKey(), entry.getValue());
-                    }
-                }
-                event = cloudEventBuilder.build();
+            switch 
(SpecVersion.parse(sendMessageRequestHeader.getProtocolVersion())) {
+                case SpecVersion.V1:

Review Comment:
   > enum switch case label must be the unqualified name of an enumeration 
constant.
   > 
   > ```
   > case V1:
   >          cloudEventBuilder = CloudEventBuilder.v1();
   >          break;
   >  case V03:
   >          cloudEventBuilder = CloudEventBuilder.v03();
   >          break;
   > ```
   right but that would mean we would be doing a static import of SpecVersion 
right?
   
   



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