[ISSUE #563] SDK SUPPORT CLOUD EVENT

eventmesh-common/src/main/java/org/apache/eventmesh/common/protocol/tcp/Header.java

@@ -17,21 +17,32 @@
 
 package org.apache.eventmesh.common.protocol.tcp;
 
+import java.util.HashMap;
+import java.util.Map;
+
 public class Header {
 
     private Command cmd;
     private int code;
-    private String msg;
+    private String dsec;
     private String seq;
+    private Map<String,Object> properties;
 
     public Header() {
     }
 
-    public Header(Command cmd, int code, String msg, String seq) {
+    public Header(Command cmd, int code, String dsec, String seq) {
         this.cmd = cmd;
         this.code = code;
-        this.msg = msg;
+        this.dsec = dsec;
+        this.seq = seq;
+    }
+
+    public Header(int code, String dsec, String seq, Map<String, Object> properties) {
+        this.code = code;
+        this.dsec = dsec;
         this.seq = seq;
+        this.properties = properties;
     }
 
     public Command getCommand() {
@@ -50,12 +61,12 @@ public void setCode(int code) {
         this.code = code;
     }
 
-    public String getMsg() {
-        return msg;
+    public String getDsec() {
+        return dsec;
     }
 
-    public void setMsg(String msg) {
-        this.msg = msg;
+    public void setDsec(String dsec) {
+        this.dsec = dsec;
     }
 
     public String getSeq() {
@@ -66,13 +77,38 @@ public void setSeq(String seq) {
         this.seq = seq;
     }
 
+    public Map<String, Object> getProperties() {
+        return properties;
+    }
+
+    public void setProperties(Map<String, Object> properties) {
+        this.properties = properties;
+    }
+
+    public void putProperty(final String name, final Object value) {
+        if (null == this.properties) {
+            this.properties = new HashMap<>();
+        }
+
+        this.properties.put(name, value);
+    }
+
+    public Object getProperty(final String name) {
+        if (null == this.properties) {
+            this.properties = new HashMap<>();
+        }
+
+        return this.properties.get(name);
+    }
+
     @Override
     public String toString() {
         return "Header{" +
-                "cmd=" + cmd +
-                ", code=" + code +
-                ", msg='" + msg + '\'' +
-                ", seq='" + seq + '\'' +
-                '}';
+            "cmd=" + cmd +
+            ", code=" + code +
+            ", dsec='" + dsec + '\'' +
+            ", seq='" + seq + '\'' +
+            ", properties=" + properties +
+            '}';
     }
 }

eventmesh-examples/build.gradle

@@ -26,7 +26,7 @@ dependencies {
     implementation project(":eventmesh-connector-plugin:eventmesh-connector-api")
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'io.netty:netty-all'
-
+    implementation "io.cloudevents:cloudevents-core"
     testImplementation project(":eventmesh-sdk-java")
     testImplementation project(":eventmesh-common")
     testImplementation project(":eventmesh-connector-plugin:eventmesh-connector-api")

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/demo/AsyncSubscribe.java

@@ -34,7 +34,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class AsyncSubscribe implements ReceiveMsgHook {
+public class AsyncSubscribe implements ReceiveMsgHook<EventMeshMessage> {
 
     public static Logger logger = LoggerFactory.getLogger(AsyncSubscribe.class);
 
@@ -68,7 +68,12 @@ public static void main(String[] agrs) throws Exception {
 
     @Override
     public void handle(Package msg, ChannelHandlerContext ctx) {
-        EventMeshMessage eventMeshMessage = (EventMeshMessage) msg.getBody();
+        EventMeshMessage eventMeshMessage = convert(msg);
         logger.info("receive async msg====================={}", eventMeshMessage);
     }
+
+    @Override
+    public EventMeshMessage convert(Package pkg) {
+        return (EventMeshMessage) pkg.getBody();
+    }
 }

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/demo/AsyncSubscribeBroadcast.java

@@ -34,7 +34,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class AsyncSubscribeBroadcast implements ReceiveMsgHook {
+public class AsyncSubscribeBroadcast implements ReceiveMsgHook<EventMeshMessage> {
 
     public static Logger logger = LoggerFactory.getLogger(AsyncSubscribeBroadcast.class);
 
@@ -68,7 +68,12 @@ public static void main(String[] agrs) throws Exception {
 
     @Override
     public void handle(Package msg, ChannelHandlerContext ctx) {
-        EventMeshMessage eventMeshMessage = (EventMeshMessage) msg.getBody();
+        EventMeshMessage eventMeshMessage = convert(msg);
         logger.info("receive broadcast msg==============={}", eventMeshMessage);
     }
+
+    @Override
+    public EventMeshMessage convert(Package pkg) {
+        return (EventMeshMessage) pkg.getBody();
+    }
 }

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/demo/SyncResponse.java

@@ -23,14 +23,15 @@
 import org.apache.eventmesh.client.tcp.common.ReceiveMsgHook;
 import org.apache.eventmesh.client.tcp.impl.DefaultEventMeshClient;
 import org.apache.eventmesh.common.protocol.SubscriptionType;
+import org.apache.eventmesh.common.protocol.tcp.EventMeshMessage;
 import org.apache.eventmesh.common.protocol.tcp.Package;
 import org.apache.eventmesh.common.protocol.SubscriptionMode;
 import org.apache.eventmesh.common.protocol.tcp.UserAgent;
 import org.apache.eventmesh.tcp.common.EventMeshTestUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class SyncResponse implements ReceiveMsgHook {
+public class SyncResponse implements ReceiveMsgHook<EventMeshMessage> {
 
     public static Logger logger = LoggerFactory.getLogger(SyncResponse.class);
 
@@ -66,4 +67,9 @@ public void handle(Package msg, ChannelHandlerContext ctx) {
         Package pkg = EventMeshTestUtils.rrResponse(msg);
         ctx.writeAndFlush(pkg);
     }
+
+    @Override
+    public EventMeshMessage convert(Package pkg) {
+        return null;
+    }
 }

eventmesh-sdk-java/build.gradle

@@ -26,6 +26,8 @@ dependencies {
     implementation "io.netty:netty-all"
     implementation "org.apache.httpcomponents:httpclient"
 
+    implementation "io.cloudevents:cloudevents-core"
+
     testImplementation project(":eventmesh-common")
     testImplementation project(":eventmesh-common")
 

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/EventMeshClient.java

@@ -17,6 +17,7 @@
 
 package org.apache.eventmesh.client.tcp;
 
+import io.cloudevents.CloudEvent;
 import org.apache.eventmesh.client.tcp.common.AsyncRRCallback;
 import org.apache.eventmesh.client.tcp.common.ReceiveMsgHook;
 import org.apache.eventmesh.common.protocol.SubscriptionType;
@@ -31,6 +32,10 @@ public interface EventMeshClient {
 
     Package publish(Package msg, long timeout) throws Exception;
 
+    Package publish(CloudEvent cloudEvent, long timeout) throws Exception;
+
+    void broadcast(CloudEvent cloudEvent, long timeout) throws Exception;
+
     void broadcast(Package msg, long timeout) throws Exception;
 
     void init() throws Exception;

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/SimplePubClient.java

@@ -18,6 +18,7 @@
 package org.apache.eventmesh.client.tcp;
 
 
+import io.cloudevents.CloudEvent;
 import org.apache.eventmesh.client.tcp.common.AsyncRRCallback;
 import org.apache.eventmesh.client.tcp.common.ReceiveMsgHook;
 import org.apache.eventmesh.common.protocol.tcp.Package;
@@ -39,6 +40,10 @@ public interface SimplePubClient {
 
     Package publish(Package msg, long timeout) throws Exception;
 
+    Package publish(CloudEvent cloudEvent, long timeout) throws Exception;
+
+    void broadcast(CloudEvent cloudEvent, long timeout) throws Exception;
+
     void broadcast(Package msg, long timeout) throws Exception;
 
     void registerBusiHandler(ReceiveMsgHook handler) throws Exception;

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/common/EventMeshCommon.java

@@ -120,4 +120,6 @@ public class EventMeshCommon {
     public static String PREFIX_SESSION_TPS_STAT_EVENTSEND = "event_send_tps_";
 
     public static String PREFIX_SESSION_TPS_STAT_EVENTREV = "event_rev_tps_";
+
+    public static String CLOUD_EVENTS_PROTOCOL_NAME = "cloudevents";
 }

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/common/MessageUtils.java

@@ -21,6 +21,7 @@
 import java.util.List;
 import java.util.concurrent.ThreadLocalRandom;
 
+import io.cloudevents.CloudEvent;
 import org.apache.eventmesh.common.protocol.SubscriptionType;
 import org.apache.eventmesh.common.protocol.tcp.Subscription;
 import org.apache.eventmesh.common.protocol.SubscriptionItem;
@@ -76,6 +77,18 @@ public static Package asyncMessageAck(Package in) {
         return msg;
     }
 
+    public static Package asyncCloudEvent(CloudEvent cloudEvent) {
+        Package msg = new Package();
+        msg.setHeader(new Header(Command.ASYNC_MESSAGE_TO_SERVER, 0,
+            null, generateRandomString(seqLength)));
+        msg.getHeader().putProperty(PropertyConst.PROPERTY_MESSAGE_PROTOCOL,
+            EventMeshCommon.CLOUD_EVENTS_PROTOCOL_NAME);
+        msg.getHeader().putProperty(PropertyConst.PROPERTY_CLOUD_EVENT_VERSION,
+            cloudEvent.getSpecVersion().toString());
+        msg.setBody(cloudEvent);
+        return msg;
+    }
+
     public static Package broadcastMessageAck(Package in) {
         Package msg = new Package();
         msg.setHeader(new Header(Command.BROADCAST_MESSAGE_TO_CLIENT_ACK, 0, null, in.getHeader().getSeq()));

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/common/PropertyConst.java

@@ -0,0 +1,11 @@
+package org.apache.eventmesh.client.tcp.common;
+
+/**
+ * properties key name
+ */
+public class PropertyConst {
+
+    public static String PROPERTY_MESSAGE_PROTOCOL = "message_protocol";
+
+    public static String PROPERTY_CLOUD_EVENT_VERSION = "cloud_event_version";
+}

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/common/ReceiveMsgHook.java

@@ -20,6 +20,13 @@
 import io.netty.channel.ChannelHandlerContext;
 import org.apache.eventmesh.common.protocol.tcp.Package;
 
-public interface ReceiveMsgHook {
+/**
+ * ReceiveMsgHook.
+ *
+ * @param <T> receive message type.
+ */
+public interface ReceiveMsgHook<T> {
     void handle(Package msg, ChannelHandlerContext ctx);
+
+    T convert(Package pkg);
 }

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/impl/DefaultEventMeshClient.java

@@ -18,6 +18,7 @@
 package org.apache.eventmesh.client.tcp.impl;
 
 
+import io.cloudevents.CloudEvent;
 import org.apache.eventmesh.client.tcp.EventMeshClient;
 import org.apache.eventmesh.client.tcp.SimplePubClient;
 import org.apache.eventmesh.client.tcp.SimpleSubClient;
@@ -73,10 +74,20 @@ public Package publish(Package msg, long timeout) throws Exception {
         return this.pubClient.publish(msg, timeout);
     }
 
+    @Override
+    public Package publish(CloudEvent cloudEvent, long timeout) throws Exception {
+        return this.pubClient.publish(cloudEvent, timeout);
+    }
+
     public void broadcast(Package msg, long timeout) throws Exception {
         this.pubClient.broadcast(msg, timeout);
     }
 
+    @Override
+    public void broadcast(CloudEvent cloudEvent, long timeout) throws Exception {
+        this.pubClient.broadcast(cloudEvent, timeout);
+    }
+
     public void init() throws Exception {
         this.subClient.init();
         this.pubClient.init();

eventmesh-sdk-java/src/main/java/org/apache/eventmesh/client/tcp/impl/SimplePubClientImpl.java

@@ -21,6 +21,7 @@
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.TimeUnit;
 
+import io.cloudevents.CloudEvent;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
@@ -29,6 +30,7 @@
 import org.apache.eventmesh.client.tcp.common.AsyncRRCallback;
 import org.apache.eventmesh.client.tcp.common.EventMeshCommon;
 import org.apache.eventmesh.client.tcp.common.MessageUtils;
+import org.apache.eventmesh.client.tcp.common.PropertyConst;
 import org.apache.eventmesh.client.tcp.common.ReceiveMsgHook;
 import org.apache.eventmesh.client.tcp.common.RequestContext;
 import org.apache.eventmesh.client.tcp.common.TcpClient;
@@ -145,6 +147,25 @@ public Package publish(Package msg, long timeout) throws Exception {
         return io(msg, timeout);
     }
 
+
+    @Override
+    public Package publish(CloudEvent cloudEvent, long timeout) throws Exception {
+        Package msg = MessageUtils.asyncCloudEvent(cloudEvent);
+        logger.info("SimplePubClientImpl cloud event|{}|publish|send|type={}|protocol={}|msg={}",
+            clientNo, msg.getHeader().getCommand(),
+            msg.getHeader().getProperty(PropertyConst.PROPERTY_MESSAGE_PROTOCOL), msg);
+        return io(MessageUtils.asyncCloudEvent(cloudEvent), timeout);
+    }
+
+    @Override
+    public void broadcast(CloudEvent cloudEvent, long timeout) throws Exception {
+        Package msg = MessageUtils.asyncCloudEvent(cloudEvent);
+        logger.info("SimplePubClientImpl cloud event|{}|publish|send|type={}|protocol={}|msg={}",
+            clientNo, msg.getHeader().getCommand(),
+            msg.getHeader().getProperty(PropertyConst.PROPERTY_MESSAGE_PROTOCOL), msg);
+        super.send(msg);
+    }
+
     /**
      * Send broadcast message
      *

eventmesh-sdk-java/src/test/java/org/apache/eventmesh/client/tcp/demo/AsyncSubscribe.java

@@ -32,7 +32,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class AsyncSubscribe implements ReceiveMsgHook {
+public class AsyncSubscribe implements ReceiveMsgHook<EventMeshMessage> {
 
     public static Logger logger = LoggerFactory.getLogger(AsyncSubscribe.class);
 
@@ -63,7 +63,12 @@ public static void main(String[] agrs) throws Exception {
 
     @Override
     public void handle(Package msg, ChannelHandlerContext ctx) {
-        EventMeshMessage eventMeshMessage = (EventMeshMessage) msg.getBody();
+        EventMeshMessage eventMeshMessage = convert(msg);
         logger.info("receive async msg====================={}", eventMeshMessage);
     }
+
+    @Override
+    public EventMeshMessage convert(Package pkg) {
+        return (EventMeshMessage) pkg.getBody();
+    }
 }