DMAAP-MR - Merge MR repos

[dmaap/messagerouter/messageservice.git] / src / main / java / org / onap / dmaap / dmf / mr / backends / kafka / Kafka011ConsumerUtil.java

diff --git a/src/main/java/org/onap/dmaap/dmf/mr/backends/kafka/Kafka011ConsumerUtil.java b/src/main/java/org/onap/dmaap/dmf/mr/backends/kafka/Kafka011ConsumerUtil.java
new file mode 100644 (file)
index 0000000..c66904b
--- /dev/null
+++ b/src/main/java/org/onap/dmaap/dmf/mr/backends/kafka/Kafka011ConsumerUtil.java
@@ -0,0 +1,120 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  org.onap.dmaap
+ *  ================================================================================
+ *  Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ *  ================================================================================
+ *  Licensed 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.
+ *  ============LICENSE_END=========================================================
+ *  
+ *  ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ *  
+ *******************************************************************************/
+package org.onap.dmaap.dmf.mr.backends.kafka;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import org.apache.kafka.clients.consumer.ConsumerRecords;
+
+import java.util.ArrayList;
+
+/**
+ * A consumer Util class for force polling when a rebalance issue is anticipated
+ * 
+ * @author Ram
+ *
+ */
+public class Kafka011ConsumerUtil {
+       private static final EELFLogger log = EELFManager.getInstance().getLogger(Kafka011ConsumerUtil.class);
+
+       /**
+        * @param fconsumercache
+        * @param fTopic
+        * @param fGroup
+        * @param fId
+        * @return
+        */
+       public static boolean forcePollOnConsumer(final String fTopic, final String fGroup, final String fId) {
+
+               Thread forcepollThread = new Thread(new Runnable() {
+                       public void run() {
+                               try {
+
+                                       ArrayList<Kafka011Consumer> kcsList = null;
+
+                                       kcsList = KafkaConsumerCache.getInstance().getConsumerListForCG(fTopic + "::" + fGroup + "::", fId);
+                                       if (null != kcsList) {
+                                               for (int counter = 0; counter < kcsList.size(); counter++) {
+
+                                                       Kafka011Consumer kc1 = kcsList.get(counter);
+
+                                                       try {
+                                                               ConsumerRecords<String, String> recs = kc1.getConsumer().poll(0);
+                                                               log.info("soft poll on " + kc1);
+                                                       } catch (java.util.ConcurrentModificationException e) {
+                                                               log.error("Error occurs for " + e);
+                                                       }
+
+                                               }
+
+                                       }
+
+                               } catch (Exception e) {
+                                       log.error("Failed and go to Exception block for " + fGroup +" ", e);
+                               }
+                       }
+               });
+
+               forcepollThread.start();
+
+               return false;
+
+       }
+
+       /**
+        * @param fconsumercache
+        * @param group
+        * @return
+        */
+       public static boolean forcePollOnConsumer(final String group) {
+
+               Thread forcepollThread = new Thread(new Runnable() {
+                       public void run() {
+                               try {
+                                       ArrayList<Kafka011Consumer> kcsList = new ArrayList<Kafka011Consumer>();
+                                       kcsList = KafkaConsumerCache.getInstance().getConsumerListForCG(group);
+
+                                       if (null != kcsList) {
+
+                                               for (int counter = 0; counter < kcsList.size(); counter++) {
+
+                                                       Kafka011Consumer kc1 = kcsList.get(counter);
+                                                       log.info("soft poll on remote nodes " + kc1);
+                                                       ConsumerRecords<String, String> recs = kc1.getConsumer().poll(0);
+                                               }
+
+                                       }
+
+                               } catch (java.util.ConcurrentModificationException e) {
+                                       log.error("Error occurs for ", e);
+                               } catch (Exception e) {
+                                       log.error("Failed and go to Exception block for " + group + " ", e);
+                               }
+                       }
+               });
+
+               forcepollThread.start();
+               return false;
+
+       }
+
+}