[ISSUE #4174]Support to subscribe message by tags when using RocketMQ storage plugin.

eventmesh-common/src/main/java/org/apache/eventmesh/common/Constants.java

@@ -92,7 +92,7 @@ public class Constants {
 
     public static final String PROPERTY_MESSAGE_STORE_TIMESTAMP = "storetimestamp";
 
-    public static final String MESSAGE_PROP_SEPARATOR = "99";
+    public static final String MESSAGE_PROP_SEPARATOR = "95";
 
     public static final String EVENTMESH_CONF_HOME = System.getProperty("confPath", System.getenv("confPath"));
 
@@ -194,6 +194,8 @@ public class Constants {
      */
     public static final String CONTENT_TYPE_CLOUDEVENTS_JSON = "application/cloudevents+json";
 
+    public static final String MSG_TAG = "tags";
+
     public static final String HTTP = "HTTP";
 
     public static final String TCP = "TCP";

eventmesh-common/src/main/java/org/apache/eventmesh/common/protocol/SubscriptionItem.java

@@ -28,6 +28,8 @@
 
     private String topic;
 
+    private String subExpression;
+
     @JsonDeserialize(converter = SubscriptionModeConverter.class)
     private SubscriptionMode mode;
 
@@ -43,6 +45,13 @@
         this.type = type;
     }
 
+    public SubscriptionItem(String topic, SubscriptionMode mode, SubscriptionType type, String subExpression) {
+        this.topic = topic;
+        this.mode = mode;
+        this.type = type;
+        this.subExpression = subExpression;
+    }
+
     public SubscriptionType getType() {
         return type;
     }
@@ -67,12 +76,21 @@
         this.mode = mode;
     }
 
+    public String getSubExpression() {
+        return subExpression;
+    }
+
+    public void setSubExpression(String subExpression) {
+        this.subExpression = subExpression;
+    }
+
     @Override
     public String toString() {
         return "SubscriptionItem{"
             + "topic=" + topic
             + ", mode=" + mode
             + ", type=" + type
+            + ", subExpression=" + subExpression
             + '}';
     }
 
@@ -85,11 +103,11 @@
             return false;
         }
         SubscriptionItem that = (SubscriptionItem) o;
-        return Objects.equal(topic, that.topic) && mode == that.mode && type == that.type;
+        return Objects.equal(topic, that.topic) && mode == that.mode && type == that.type && Objects.equal(subExpression, that.subExpression);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(topic, mode, type);
+        return Objects.hashCode(topic, mode, type, subExpression);
     }
 }

eventmesh-examples/src/main/java/org/apache/eventmesh/common/ExampleConstants.java

@@ -36,8 +36,10 @@ public class ExampleConstants {
     public static final String EVENTMESH_HTTP_ASYNC_TEST_TOPIC = "TEST-TOPIC-HTTP-ASYNC";
     public static final String EVENTMESH_HTTP_SYNC_TEST_TOPIC = "TEST-TOPIC-HTTP-SYNC";
     public static final String EVENTMESH_TCP_ASYNC_TEST_TOPIC = "TEST-TOPIC-TCP-ASYNC";
+    public static final String EVENTMESH_TCP_ASYNC_TEST_TOPIC_TAG = "TEST-TOPIC-TCP-ASYNC-TAG";
     public static final String EVENTMESH_TCP_SYNC_TEST_TOPIC = "TEST-TOPIC-TCP-SYNC";
     public static final String EVENTMESH_TCP_BROADCAST_TEST_TOPIC = "TEST-TOPIC-TCP-BROADCAST";
+    public static final String EVENTMESH_TCP_BROADCAST_TEST_TOPIC_TAG = "TEST-TOPIC-TCP-BROADCAST-TAG";
 
     public static final String DEFAULT_EVENTMESH_TEST_PRODUCER_GROUP = "EventMeshTest-producerGroup";
     public static final String DEFAULT_EVENTMESH_TEST_CONSUMER_GROUP = "EventMeshTest-consumerGroup";
@@ -56,4 +58,6 @@ public class ExampleConstants {
     public static final String IDC = "FT";
     public static final String SUB_SYS = "1234";
     public static final String SERVER_PORT = "server.port";
+
+    public static final String TAG_PREFIX = "TEST_MSG_TAG_";
 }

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/common/EventMeshTestUtils.java

@@ -30,6 +30,8 @@
 import org.apache.eventmesh.common.protocol.tcp.UserAgent;
 import org.apache.eventmesh.common.utils.JsonUtils;
 
+import org.apache.commons.lang3.StringUtils;
+
 import java.net.URI;
 import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
@@ -105,38 +107,47 @@ public static Package rrResponse(final EventMeshMessage request) {
     }
 
     public static EventMeshMessage getEventMeshMessage(String eventMeshTcpSyncTestTopic, String msgType, String msg,
-        String keys, String keyMsg, String testMessage) {
+        String keys, String keyMsg, String testMessage, String tag) {
         final EventMeshMessage mqmsg = new EventMeshMessage();
         mqmsg.setTopic(eventMeshTcpSyncTestTopic);
         mqmsg.getProperties().put(msgType, msg);
         mqmsg.getProperties().put(UtilsConstants.TTL, DEFAULT_TTL_MS);
         mqmsg.getProperties().put(keys, keyMsg);
+        if (StringUtils.isNotBlank(tag)) {
+            mqmsg.getProperties().put(Constants.MSG_TAG, tag);
+        }
         mqmsg.getHeaders().put(Constants.DATA_CONTENT_TYPE, "text/plain");
         mqmsg.setBody(testMessage);
         return mqmsg;
     }
 
     public static EventMeshMessage generateSyncRRMqMsg() {
         return getEventMeshMessage(ExampleConstants.EVENTMESH_TCP_SYNC_TEST_TOPIC, UtilsConstants.MSG_TYPE,
-            "persistent", UtilsConstants.KEYS, generateRandomString(16), "testSyncRR");
+            "persistent", UtilsConstants.KEYS, generateRandomString(16), "testSyncRR", null);
     }
 
     private static EventMeshMessage generateAsyncRRMqMsg() {
         return getEventMeshMessage(ExampleConstants.EVENTMESH_TCP_SYNC_TEST_TOPIC, UtilsConstants.REPLY_TO,
             "localhost@ProducerGroup-producerPool-9-access#V1_4_0#CI", UtilsConstants.PROPERTY_MESSAGE_REPLY_TO,
-            "notnull", "testAsyncRR");
+            "notnull", "testAsyncRR", null);
     }
 
     public static EventMeshMessage generateAsyncEventMqMsg() {
         return getEventMeshMessage(ExampleConstants.EVENTMESH_TCP_ASYNC_TEST_TOPIC, UtilsConstants.REPLY_TO,
             "localhost@ProducerGroup-producerPool-9-access#V1_4_0#CI", UtilsConstants.PROPERTY_MESSAGE_REPLY_TO,
-            "notnull", ASYNC_MSG_BODY);
+            "notnull", ASYNC_MSG_BODY, null);
     }
 
-    public static EventMeshMessage generateBroadcastMqMsg() {
-        return getEventMeshMessage(ExampleConstants.EVENTMESH_TCP_ASYNC_TEST_TOPIC, UtilsConstants.REPLY_TO,
+    public static EventMeshMessage generateAsyncEventMqMsgWithTag(int i) {
+        return getEventMeshMessage(ExampleConstants.EVENTMESH_TCP_ASYNC_TEST_TOPIC_TAG, UtilsConstants.REPLY_TO,
             "localhost@ProducerGroup-producerPool-9-access#V1_4_0#CI", UtilsConstants.PROPERTY_MESSAGE_REPLY_TO,
-            "notnull", ASYNC_MSG_BODY);
+            "notnull", ASYNC_MSG_BODY, ExampleConstants.TAG_PREFIX + i);
+    }
+
+    public static EventMeshMessage generateBroadcastMqMsg() {
+        return getEventMeshMessage(ExampleConstants.EVENTMESH_TCP_BROADCAST_TEST_TOPIC, UtilsConstants.REPLY_TO,
+                                   "localhost@ProducerGroup-producerPool-9-access#V1_4_0#CI", UtilsConstants.PROPERTY_MESSAGE_REPLY_TO,
+                                   "notnull", ASYNC_MSG_BODY, null);
     }
 
     private static String generateRandomString(final int length) {
@@ -162,6 +173,22 @@ public static CloudEvent generateCloudEventV1Async() {
             .build();
     }
 
+    public static CloudEvent generateCloudEventV1AsyncWithTag(int i) {
+        final Map<String, String> content = new HashMap<>();
+        content.put(UtilsConstants.CONTENT, ASYNC_MSG_BODY);
+
+        return CloudEventBuilder.v1()
+            .withId(UUID.randomUUID().toString())
+            .withSubject(ExampleConstants.EVENTMESH_TCP_ASYNC_TEST_TOPIC_TAG)
+            .withSource(URI.create("/"))
+            .withDataContentType(ExampleConstants.CLOUDEVENT_CONTENT_TYPE)
+            .withType(CLOUD_EVENTS_PROTOCOL_NAME)
+            .withData(Objects.requireNonNull(JsonUtils.toJSONString(content)).getBytes(Constants.DEFAULT_CHARSET))
+            .withExtension(UtilsConstants.TTL, DEFAULT_TTL_MS)
+            .withExtension(Constants.MSG_TAG, ExampleConstants.TAG_PREFIX + i)
+            .build();
+    }
+
     public static CloudEvent generateCloudEventV1SyncRR() {
         final Map<String, String> content = new HashMap<>();
         content.put(UtilsConstants.CONTENT, "testSyncRR");

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/demo/pub/cloudevents/AsyncPublish.java

@@ -59,6 +59,16 @@ public static void main(String[] args) throws Exception {
 
                 ThreadUtils.sleep(1, TimeUnit.SECONDS);
             }
+
+            for (int i = 0; i < 4; i++) {
+                CloudEvent event = EventMeshTestUtils.generateCloudEventV1AsyncWithTag(i);
+                if (log.isInfoEnabled()) {
+                    log.info("begin send async msg[{}] with tag: {}", i, event);
+                }
+                client.publish(event, EventMeshCommon.DEFAULT_TIME_OUT_MILLS);
+
+                ThreadUtils.sleep(1, TimeUnit.SECONDS);
+            }
             ThreadUtils.sleep(2, TimeUnit.SECONDS);
         } catch (Exception e) {
             log.error("AsyncPublish failed", e);

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/demo/pub/cloudevents/SyncRequest.java

@@ -27,6 +27,7 @@
 import org.apache.eventmesh.tcp.common.EventMeshTestUtils;
 import org.apache.eventmesh.util.Utils;
 
+import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.Properties;
 
@@ -42,6 +43,15 @@
 public class SyncRequest {
 
     public static void main(String[] args) throws Exception {
+        EventMeshTCPClient<CloudEvent> client = createClient();
+        try {
+            publishMsg(client);
+        } catch (Exception e) {
+            log.error("SyncRequest failed", e);
+        }
+    }
+
+    private static EventMeshTCPClient<CloudEvent> createClient() throws IOException {
         final Properties properties = Utils.readPropertiesFile(ExampleConstants.CONFIG_FILE_NAME);
         final String eventMeshIp = properties.getProperty(ExampleConstants.EVENTMESH_IP);
         final int eventMeshTcpPort = Integer.parseInt(properties.getProperty(ExampleConstants.EVENTMESH_TCP_PORT));
@@ -51,40 +61,39 @@ public static void main(String[] args) throws Exception {
             .port(eventMeshTcpPort)
             .userAgent(userAgent)
             .build();
+        final EventMeshTCPClient<CloudEvent> client = EventMeshTCPClientFactory.createEventMeshTCPClient(
+            eventMeshTcpClientConfig, CloudEvent.class);
+        client.init();
+        return client;
+    }
 
-        try {
-
-            final EventMeshTCPClient<CloudEvent> client = EventMeshTCPClientFactory.createEventMeshTCPClient(
-                eventMeshTcpClientConfig, CloudEvent.class);
-            client.init();
-
-            final CloudEvent event = EventMeshTestUtils.generateCloudEventV1SyncRR();
-
-            log.info("begin send rr msg: {}", event);
-
-            final Package response = client.rr(event, EventMeshCommon.DEFAULT_TIME_OUT_MILLS);
-            // check-NPE EventFormat
-            final EventFormat eventFormat = EventFormatProvider.getInstance().resolveFormat(JsonFormat.CONTENT_TYPE);
-            if (null == eventFormat) {
-                log.error("eventFormat is null. end the process");
-                return;
-            }
+    private static void publishMsg(EventMeshTCPClient<CloudEvent> client) {
+        final CloudEvent event = EventMeshTestUtils.generateCloudEventV1SyncRR();
+        log.info("begin send req-resp msg: {}", event);
 
-            final CloudEvent replyEvent = eventFormat
-                .deserialize(response.getBody().toString().getBytes(StandardCharsets.UTF_8));
+        final Package response = client.rr(event, EventMeshCommon.DEFAULT_TIME_OUT_MILLS);
+        logResponse(response);
+    }
 
-            // check-NPE CloudEventData
-            final CloudEventData cloudEventData = replyEvent.getData();
-            if (null == cloudEventData) {
-                log.error("replyEvent.data is null. end the process");
-                return;
-            }
+    private static void logResponse(Package response) {
+        // check-NPE EventFormat
+        final EventFormat eventFormat = EventFormatProvider.getInstance().resolveFormat(JsonFormat.CONTENT_TYPE);
+        if (null == eventFormat) {
+            log.error("eventFormat is null. end the process");
+            return;
+        }
 
-            final String content = new String(cloudEventData.toBytes(), StandardCharsets.UTF_8);
-            log.info("receive rr reply: {}|{}", response, content);
+        final CloudEvent replyEvent = eventFormat
+            .deserialize(response.getBody().toString().getBytes(StandardCharsets.UTF_8));
 
-        } catch (Exception e) {
-            log.error("SyncRequest failed", e);
+        // check-NPE CloudEventData
+        final CloudEventData cloudEventData = replyEvent.getData();
+        if (null == cloudEventData) {
+            log.error("replyEvent.data is null. end the process");
+            return;
         }
+
+        final String content = new String(cloudEventData.toBytes(), StandardCharsets.UTF_8);
+        log.info("receive rr reply, response: {}, response's content: {}", response, content);
     }
 }

eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/demo/pub/eventmeshmessage/AsyncPublish.java

@@ -59,6 +59,17 @@ public static void main(String[] args) throws Exception {
 
                 ThreadUtils.sleep(1, TimeUnit.SECONDS);
             }
+
+            for (int i = 0; i < 4; i++) {
+                final EventMeshMessage eventMeshMessage = EventMeshTestUtils.generateAsyncEventMqMsgWithTag(i);
+
+                if (log.isInfoEnabled()) {
+                    log.info("begin send async msg[{}] with tag, msg: {}", i, eventMeshMessage);
+                }
+                client.publish(eventMeshMessage, EventMeshCommon.DEFAULT_TIME_OUT_MILLS);
+
+                ThreadUtils.sleep(1, TimeUnit.SECONDS);
+            }
             ThreadUtils.sleep(2, TimeUnit.SECONDS);
         } catch (Exception e) {
             log.error("AsyncPublish failed", e);

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

@@ -21,6 +21,7 @@
 import org.apache.eventmesh.client.tcp.EventMeshTCPClientFactory;
 import org.apache.eventmesh.client.tcp.common.ReceiveMsgHook;
 import org.apache.eventmesh.client.tcp.conf.EventMeshTCPClientConfig;
+import org.apache.eventmesh.common.Constants;
 import org.apache.eventmesh.common.ExampleConstants;
 import org.apache.eventmesh.common.protocol.SubscriptionMode;
 import org.apache.eventmesh.common.protocol.SubscriptionType;
@@ -29,6 +30,7 @@
 import org.apache.eventmesh.util.Utils;
 
 import java.nio.charset.StandardCharsets;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.Properties;
 
@@ -56,6 +58,9 @@ public static void main(String[] args) throws Exception {
 
             client.subscribe(ExampleConstants.EVENTMESH_TCP_ASYNC_TEST_TOPIC, SubscriptionMode.CLUSTERING,
                 SubscriptionType.ASYNC);
+            client.subscribe(ExampleConstants.EVENTMESH_TCP_ASYNC_TEST_TOPIC_TAG,
+                ExampleConstants.TAG_PREFIX + 1 + "||" + ExampleConstants.TAG_PREFIX + 3,
+                SubscriptionMode.CLUSTERING, SubscriptionType.ASYNC);
             client.registerSubBusiHandler(new AsyncSubscribe());
 
             client.listen();
@@ -72,7 +77,11 @@ public Optional<CloudEvent> handle(final CloudEvent msg) {
         }
 
         final String content = new String(msg.getData().toBytes(), StandardCharsets.UTF_8);
-        log.info("receive async msg: {}|{}", msg, content);
+        if (Objects.nonNull(msg.getExtension(Constants.MSG_TAG))) {
+            log.info("receive async msg, msg:{}, msg's data:{}, tag:{}", msg, content, msg.getExtension(Constants.MSG_TAG));
+        } else {
+            log.info("receive async msg, msg:{}, msg's data:{}", msg, content);
+        }
         return Optional.empty();
     }
 }