X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Forg%2Fonap%2Fdmaap%2Fdmf%2Fmr%2Fbackends%2Fkafka%2FKafka011ConsumerUtil.java;fp=src%2Fmain%2Fjava%2Forg%2Fonap%2Fdmaap%2Fdmf%2Fmr%2Fbackends%2Fkafka%2FKafka011ConsumerUtil.java;h=c66904bad1cc7734daee220c7e62a944dc714b85;hb=f052f758c29fa92c21578514202268f3b0430a1a;hp=0000000000000000000000000000000000000000;hpb=388410f85e44de41ef9b340f44c0b4b1b0af59b6;p=dmaap%2Fmessagerouter%2Fmessageservice.git 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 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 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 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 kcsList = new ArrayList(); + 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 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; + + } + +}