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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.AppPreferencesToPublisherConfigMapper;
import org.openecomp.dcae.apod.analytics.cdap.tca.utils.CDAPTCAUtils;
import org.openecomp.dcae.apod.analytics.common.AnalyticsConstants;
import org.openecomp.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
import org.openecomp.dcae.apod.analytics.dmaap.DMaaPMRFactory;
import org.openecomp.dcae.apod.analytics.dmaap.domain.config.DMaaPMRPublisherConfig;
import org.openecomp.dcae.apod.analytics.dmaap.service.publisher.DMaaPMRPublisher;
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;
import static java.lang.String.format;
/**
* TCA DMaaP Publisher will monitor alerts table at regular intervals and publish any alerts to DMaaP MR Publishing
* Topic
* <p>
* @author Rajiv Singla . Creation Date: 11/16/2016.
*/
public class TCADMaaPPublisherWorker extends BaseTCADMaaPMRWorker {
private static final Logger LOG = LoggerFactory.getLogger(TCADMaaPPublisherWorker.class);
private DMaaPMRPublisher publisher;
private Metrics metrics;
@Property
private final String tcaVESAlertsTableName;
public TCADMaaPPublisherWorker(final String tcaVESAlertsTableName) {
this.tcaVESAlertsTableName = tcaVESAlertsTableName;
}
@Override
public void configure() {
setName(CDAPComponentsConstants.TCA_FIXED_DMAAP_PUBLISHER_WORKER);
setDescription(CDAPComponentsConstants.TCA_FIXED_DMAAP_PUBLISHER_DESCRIPTION_WORKER);
LOG.debug("Configuring TCA MR DMaaP Publisher worker with name: {}",
CDAPComponentsConstants.TCA_FIXED_DMAAP_PUBLISHER_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 Publisher worker with preferences: {}", tcaAppPreferences);
// Map TCA App Preferences to DMaaP MR Publisher Config
final DMaaPMRPublisherConfig publisherConfig = AppPreferencesToPublisherConfigMapper.map(tcaAppPreferences);
LOG.info("TCA DMaaP MR Publisher worker will be polling TCA Alerts Table Name: {}", tcaVESAlertsTableName);
// Create an instance of DMaaP MR Publisher
LOG.debug("Creating an instance of DMaaP Publisher");
publisher = DMaaPMRFactory.create().createPublisher(publisherConfig);
// initialize a new Quartz scheduler
initializeScheduler(tcaAppPreferences, new StdSchedulerFactory());
// initialize scheduler state
isSchedulerShutdown = new AtomicBoolean(true);
}
/**
* Stop DMaaP Publisher
*/
@Override
public void stop() {
// Close Publisher - which will flush any batch messages if present in batch queue
if (publisher != null) {
try {
publisher.close();
} catch (Exception e) {
final String errorMessage = format("Error while shutting down DMaaP MR Publisher: %s", e);
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
}
// Shut down scheduler
super.stop();
}
/**
* Initializes a scheduler instance for DMaaP MR Publisher Job
*
* @throws SchedulerException SchedulerException
*/
private void initializeScheduler(final TCAAppPreferences tcaAnalyticsAppConfig,
final StdSchedulerFactory stdSchedulerFactory) throws SchedulerException {
// Get Publisher polling interval
final Integer publisherPollingInterval = tcaAnalyticsAppConfig.getPublisherPollingInterval();
// Publisher Quartz Properties file
final String quartzPublisherPropertiesFileName = AnalyticsConstants.TCA_QUARTZ_PUBLISHER_PROPERTIES_FILE_NAME;
// Create a new JobDataMap containing information required by TCA DMaaP Publisher Job
final JobDataMap jobDataMap = new JobDataMap();
jobDataMap.put(AnalyticsConstants.CDAP_ALERTS_TABLE_VARIABLE_NAME, tcaVESAlertsTableName);
jobDataMap.put(AnalyticsConstants.WORKER_CONTEXT_VARIABLE_NAME, getContext());
jobDataMap.put(AnalyticsConstants.DMAAP_PUBLISHER_VARIABLE_NAME, publisher);
jobDataMap.put(AnalyticsConstants.DMAAP_METRICS_VARIABLE_NAME, metrics);
// Create new publisher scheduler
scheduler = TCAUtils.createQuartzScheduler(publisherPollingInterval, stdSchedulerFactory,
quartzPublisherPropertiesFileName, jobDataMap, TCADMaaPMRPublisherJob.class,
AnalyticsConstants.TCA_DMAAP_PUBLISHER_QUARTZ_JOB_NAME,
AnalyticsConstants.TCA_DMAAP_PUBLISHER_QUARTZ_TRIGGER_NAME);
}
}
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