[GitHub] [incubator-eventmesh] LIU-WEI-git commented on a diff in pull request #1203: [ISSUE #270] Pravega connector

[GitBox <gi...@apache.org>]

LIU-WEI-git commented on code in PR #1203:
URL: https://github.com/apache/incubator-eventmesh/pull/1203#discussion_r960459995


##########
eventmesh-connector-plugin/eventmesh-connector-pravega/src/main/java/org/apache/eventmesh/connector/pravega/PravegaProducerImpl.java:
##########
@@ -0,0 +1,107 @@
+/*
+ * 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 org.apache.eventmesh.connector.pravega;
+
+import io.cloudevents.CloudEvent;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.eventmesh.api.RequestReplyCallback;
+import org.apache.eventmesh.api.SendCallback;
+import org.apache.eventmesh.api.SendResult;
+import org.apache.eventmesh.api.exception.ConnectorRuntimeException;
+import org.apache.eventmesh.api.exception.OnExceptionContext;
+import org.apache.eventmesh.api.producer.Producer;
+import org.apache.eventmesh.connector.pravega.client.PravegaClient;
+import org.apache.eventmesh.connector.pravega.exception.PravegaConnectorException;
+
+import java.util.Properties;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+@Slf4j
+public class PravegaProducerImpl implements Producer {
+    private final AtomicBoolean started = new AtomicBoolean(false);
+    private PravegaClient client;
+
+    @Override
+    public void init(Properties properties) throws Exception {
+        client = PravegaClient.getInstance();
+    }
+
+    @Override
+    public void start() {
+        started.compareAndSet(false, true);
+    }
+
+    @Override
+    public void shutdown() {
+        started.compareAndSet(true, false);
+    }
+
+    @Override
+    public boolean isStarted() {
+        return started.get();
+    }
+
+    @Override
+    public boolean isClosed() {
+        return !started.get();
+    }
+
+    @Override
+    public void publish(CloudEvent cloudEvent, SendCallback sendCallback) throws Exception {
+        try {
+            SendResult sendResult = client.publish(cloudEvent.getSubject(), cloudEvent);
+            sendCallback.onSuccess(sendResult);
+        } catch (Exception e) {
+            log.error("send message error, topic: {}", cloudEvent.getSubject());
+            OnExceptionContext onExceptionContext = OnExceptionContext.builder()
+                    .messageId("-1")
+                    .topic(cloudEvent.getSubject())
+                    .exception(new ConnectorRuntimeException(e))
+                    .build();
+            sendCallback.onException(onExceptionContext);
+        }
+    }
+
+    @Override
+    public void sendOneway(CloudEvent cloudEvent) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void request(CloudEvent cloudEvent, RequestReplyCallback rrCallback, long timeout) throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean reply(CloudEvent cloudEvent, SendCallback sendCallback) throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void checkTopicExist(String topic) throws Exception {
+        boolean exist = client.checkTopicExist(topic);
+        if (!exist) {

Review Comment:
   Thank for your suggestion.



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