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/*
* ===============================LICENSE_START======================================
* dcae-analytics
* ================================================================================
* 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===========================================
*/
package org.openecomp.dcae.apod.analytics.cdap.tca.worker;
import co.cask.cdap.api.annotation.Property;
import co.cask.cdap.api.metrics.Metrics;
import co.cask.cdap.api.worker.WorkerContext;
import org.openecomp.dcae.apod.analytics.cdap.common.CDAPComponentsConstants;
import org.openecomp.dcae.apod.analytics.cdap.tca.settings.TCAAppPreferences;
import org.openecomp.dcae.apod.analytics.cdap.tca.utils.AppPreferencesToSubscriberConfigMapper;
import org.openecomp.dcae.apod.analytics.cdap.tca.utils.CDAPTCAUtils;
import org.openecomp.dcae.apod.analytics.common.AnalyticsConstants;
import org.openecomp.dcae.apod.analytics.dmaap.DMaaPMRFactory;
import org.openecomp.dcae.apod.analytics.dmaap.domain.config.DMaaPMRSubscriberConfig;
import org.openecomp.dcae.apod.analytics.dmaap.service.subscriber.DMaaPMRSubscriber;
import org.openecomp.dcae.apod.analytics.tca.utils.TCAUtils;
import org.quartz.JobDataMap;
import org.quartz.SchedulerException;
import org.quartz.impl.StdSchedulerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* TCA DMaaP Subscriber will read messages and post them to cdap stream at regular intervals
* <p>
* @author Rajiv Singla . Creation Date: 10/14/2016.
*/
public class TCADMaaPSubscriberWorker extends BaseTCADMaaPMRWorker {
private static final Logger LOG = LoggerFactory.getLogger(TCADMaaPSubscriberWorker.class);
private DMaaPMRSubscriber subscriber;
private Metrics metrics;
@Property
private final String tcaSubscriberOutputStreamName;
public TCADMaaPSubscriberWorker(final String tcaSubscriberOutputStreamName) {
this.tcaSubscriberOutputStreamName = tcaSubscriberOutputStreamName;
}
@Override
public void configure() {
setName(CDAPComponentsConstants.TCA_FIXED_DMAAP_SUBSCRIBER_WORKER);
setDescription(CDAPComponentsConstants.TCA_FIXED_DMAAP_SUBSCRIBER_DESCRIPTION_WORKER);
LOG.debug("Configuring TCA MR DMaaP Subscriber worker with name: {}",
CDAPComponentsConstants.TCA_FIXED_DMAAP_SUBSCRIBER_WORKER);
}
@Override
public void initialize(WorkerContext context) throws Exception {
super.initialize(context);
// Parse runtime arguments
final TCAAppPreferences tcaAppPreferences = CDAPTCAUtils.getValidatedTCAAppPreferences(context);
LOG.info("Initializing TCA MR DMaaP Subscriber worker with preferences: {}", tcaAppPreferences);
// Map TCA App Preferences to DMaaP MR Subscriber Config
final DMaaPMRSubscriberConfig subscriberConfig = AppPreferencesToSubscriberConfigMapper.map(tcaAppPreferences);
LOG.info("TCA DMaaP MR Subscriber worker will be writing to CDAP Stream: {}", tcaSubscriberOutputStreamName);
// Create an instance of DMaaP MR Subscriber
LOG.debug("Creating an instance of DMaaP Subscriber");
subscriber = DMaaPMRFactory.create().createSubscriber(subscriberConfig);
// initialize a new Quartz scheduler
initializeScheduler(tcaAppPreferences, new StdSchedulerFactory());
// initialize scheduler state
isSchedulerShutdown = new AtomicBoolean(true);
}
/**
* Initializes a scheduler instance for DMaaP MR Subscriber Job
*
* @throws SchedulerException SchedulerException
*/
private void initializeScheduler(final TCAAppPreferences tcaAppPreferences,
final StdSchedulerFactory stdSchedulerFactory) throws SchedulerException {
// Get Subscriber polling interval
final Integer subscriberPollingInterval = tcaAppPreferences.getSubscriberPollingInterval();
// Subscriber Quartz Properties file
final String quartzSubscriberPropertiesFileName = AnalyticsConstants.TCA_QUARTZ_SUBSCRIBER_PROPERTIES_FILE_NAME;
// Create a new JobDataMap containing information required by TCA DMaaP Subscriber Job
final JobDataMap jobDataMap = new JobDataMap();
jobDataMap.put(AnalyticsConstants.CDAP_STREAM_VARIABLE_NAME, tcaSubscriberOutputStreamName);
jobDataMap.put(AnalyticsConstants.WORKER_CONTEXT_VARIABLE_NAME, getContext());
jobDataMap.put(AnalyticsConstants.DMAAP_SUBSCRIBER_VARIABLE_NAME, subscriber);
jobDataMap.put(AnalyticsConstants.DMAAP_METRICS_VARIABLE_NAME, metrics);
// Create new publisher scheduler
scheduler = TCAUtils.createQuartzScheduler(subscriberPollingInterval, stdSchedulerFactory,
quartzSubscriberPropertiesFileName, jobDataMap, TCADMaaPMRSubscriberJob.class,
AnalyticsConstants.TCA_DMAAP_SUBSCRIBER_QUARTZ_JOB_NAME,
AnalyticsConstants.TCA_DMAAP_SUBSCRIBER_QUARTZ_TRIGGER_NAME);
}
}
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