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/*******************************************************************************
* ============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 com.att.dmf.mr.backends.kafka;
import java.util.ArrayList;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
/**
* 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.getMessage());
e.printStackTrace();
}
}
});
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.getMessage());
e.printStackTrace();
}
}
});
forcepollThread.start();
return false;
}
}
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