[GitHub] [skywalking] kezhenxu94 commented on a change in pull request #4847: [WIP]Provide kafka as collector/reporter

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kezhenxu94 commented on a change in pull request #4847:
URL: https://github.com/apache/skywalking/pull/4847#discussion_r453406682



##########
File path: .github/workflows/e2e.kafka.yaml
##########
@@ -0,0 +1,50 @@
+# 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.
+
+name: E2E
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+    tags:
+      - 'v*'
+
+env:
+  SKIP_TEST: true
+  SW_AGENT_JDK_VERSION: 8
+
+jobs:
+  GOAgent:

Review comment:
       ```suggestion
     Kafka:
   ```

##########
File path: oap-server/server-receiver-plugin/skywalking-kafka-receiver-plugin/src/test/java/org/apache/skywalking/oap/server/receiver/kafka/provider/SourceReceiverPoint.java
##########
@@ -0,0 +1,29 @@
+/*
+ * 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.skywalking.oap.server.receiver.kafka.provider;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface SourceReceiverPoint {

Review comment:
       unused

##########
File path: oap-server/server-cluster-plugin/cluster-zookeeper-plugin/src/main/java/org/apache/skywalking/oap/server/cluster/plugin/zookeeper/ZookeeperCoordinator.java
##########
@@ -78,6 +84,33 @@ public synchronized void registerRemote(RemoteInstance remoteInstance) throws Se
         }
     }
 
+    @Override
+    public synchronized RemoteInstance updateRemoteNodes(String serverId) throws Exception {
+        ServiceInstance self = null;
+        for (ServiceInstance<RemoteInstance> service : serviceCache.getInstances()) {
+
+            if (service.getPayload().getAddress().equals(selfAddress)) {
+                self = service;
+            } else if (StringUtil.isNotEmpty(serverId) && serverId.equals(service.getPayload().getServerId())) {
+                throw new ServiceRegisterException("ServerId[" + serverId + "] confirmed");

Review comment:
       Do you mean `conflict` (instead of `confirmed`)?

##########
File path: apm-sniffer/optional-reporter-plugins/kafka-reporter-plugin/src/main/java/org/apache/skywalking/apm/agent/core/kafka/KafkaServiceManagementProducer.java
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.skywalking.apm.agent.core.kafka;
+
+import java.util.Arrays;
+import java.util.Objects;
+import java.util.Properties;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.stream.Collectors;
+import org.apache.kafka.clients.admin.AdminClient;
+import org.apache.kafka.clients.admin.DescribeTopicsResult;
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.ProducerConfig;
+import org.apache.kafka.common.serialization.BytesSerializer;
+import org.apache.kafka.common.serialization.StringSerializer;
+import org.apache.kafka.common.utils.Bytes;
+import org.apache.skywalking.apm.agent.core.boot.BootService;
+import org.apache.skywalking.apm.agent.core.boot.DefaultImplementor;
+import org.apache.skywalking.apm.agent.core.conf.Config;
+
+/**
+ *  Configuring, initializing and holding a KafkaProducer instance for reporters.
+ */
+@DefaultImplementor
+public class KafkaServiceManagementProducer implements BootService, Runnable {

Review comment:
       Is this class name general enough? Seems `KafkaServiceManagementService` has nothing to do with `ServiceManagement`, a little misleading (because there is another class `KafkaServiceManagementService`)




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