dcae-analytics-cdap-tca/src/main/java/org/onap/dcae/apod/analytics/cdap/tca/worker/TCADMaaPPublisherWorker.java

   1 /*
   2  * ===============================LICENSE_START======================================
   3  *  dcae-analytics
   4  * ================================================================================
   5  *    Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  *  Licensed under the Apache License, Version 2.0 (the "License");
   8  *  you may not use this file except in compliance with the License.
   9  *   You may obtain a copy of the License at
  10  *
  11  *          http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  *  Unless required by applicable law or agreed to in writing, software
  14  *  distributed under the License is distributed on an "AS IS" BASIS,
  15  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  *  See the License for the specific language governing permissions and
  17  *  limitations under the License.
  18  *  ============================LICENSE_END===========================================
  19  */
  20
  21 package org.onap.dcae.apod.analytics.cdap.tca.worker;
  22
  23 import co.cask.cdap.api.annotation.Property;
  24 import co.cask.cdap.api.metrics.Metrics;
  25 import co.cask.cdap.api.worker.WorkerContext;
  26 import org.onap.dcae.apod.analytics.cdap.common.CDAPComponentsConstants;
  27 import org.onap.dcae.apod.analytics.cdap.tca.settings.TCAAppPreferences;
  28 import org.onap.dcae.apod.analytics.cdap.tca.utils.AppPreferencesToPublisherConfigMapper;
  29 import org.onap.dcae.apod.analytics.cdap.tca.utils.CDAPTCAUtils;
  30 import org.onap.dcae.apod.analytics.common.AnalyticsConstants;
  31 import org.onap.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
  32 import org.onap.dcae.apod.analytics.dmaap.DMaaPMRFactory;
  33 import org.onap.dcae.apod.analytics.dmaap.domain.config.DMaaPMRPublisherConfig;
  34 import org.onap.dcae.apod.analytics.dmaap.service.publisher.DMaaPMRPublisher;
  35 import org.onap.dcae.apod.analytics.tca.utils.TCAUtils;
  36 import org.quartz.JobDataMap;
  37 import org.quartz.SchedulerException;
  38 import org.quartz.impl.StdSchedulerFactory;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 import java.util.concurrent.atomic.AtomicBoolean;
  43
  44 import static java.lang.String.format;
  45
  46 /**
  47  * TCA DMaaP Publisher will monitor alerts table at regular intervals and publish any alerts to DMaaP MR Publishing
  48  * Topic
  49  * <p>
  50  * @author Rajiv Singla . Creation Date: 11/16/2016.
  51  */
  52 public class TCADMaaPPublisherWorker extends BaseTCADMaaPMRWorker {
  53
  54     private static final Logger LOG = LoggerFactory.getLogger(TCADMaaPPublisherWorker.class);
  55
  56     private DMaaPMRPublisher publisher;
  57     private Metrics metrics;
  58     @Property
  59     private final String tcaVESAlertsTableName;
  60
  61     public TCADMaaPPublisherWorker(final String tcaVESAlertsTableName) {
  62         this.tcaVESAlertsTableName = tcaVESAlertsTableName;
  63     }
  64
  65     @Override
  66     public void configure() {
  67         setName(CDAPComponentsConstants.TCA_FIXED_DMAAP_PUBLISHER_WORKER);
  68         setDescription(CDAPComponentsConstants.TCA_FIXED_DMAAP_PUBLISHER_DESCRIPTION_WORKER);
  69         LOG.debug("Configuring TCA MR DMaaP Publisher worker with name: {}",
  70                 CDAPComponentsConstants.TCA_FIXED_DMAAP_PUBLISHER_WORKER);
  71     }
  72
  73
  74     @Override
  75     public void initialize(WorkerContext context) throws Exception {
  76         super.initialize(context);
  77
  78         // Parse runtime arguments
  79         final TCAAppPreferences tcaAppPreferences = CDAPTCAUtils.getValidatedTCAAppPreferences(context);
  80
  81         LOG.info("Initializing TCA MR DMaaP Publisher worker with preferences: {}", tcaAppPreferences);
  82
  83         //  Map TCA App Preferences to DMaaP MR Publisher Config
  84         final DMaaPMRPublisherConfig publisherConfig = AppPreferencesToPublisherConfigMapper.map(tcaAppPreferences);
  85
  86         LOG.info("TCA DMaaP MR Publisher worker will be polling TCA Alerts Table Name: {}", tcaVESAlertsTableName);
  87
  88         // Create an instance of DMaaP MR Publisher
  89         LOG.debug("Creating an instance of DMaaP Publisher");
  90         publisher = DMaaPMRFactory.create().createPublisher(publisherConfig);
  91
  92         // initialize a new Quartz scheduler
  93         initializeScheduler(tcaAppPreferences, new StdSchedulerFactory());
  94
  95         // initialize scheduler state
  96         isSchedulerShutdown = new AtomicBoolean(true);
  97     }
  98
  99
 100     /**
 101      * Stop DMaaP Publisher
 102      */
 103     @Override
 104     public void stop() {
 105         // Close Publisher - which will flush any batch messages if present in batch queue
 106         if (publisher != null) {
 107             try {
 108                 publisher.close();
 109             } catch (Exception e) {
 110                 final String errorMessage = format("Error while shutting down DMaaP MR Publisher: %s", e);
 111                 throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
 112             }
 113         }
 114         // Shut down scheduler
 115         super.stop();
 116     }
 117
 118
 119     /**
 120      * Initializes a scheduler instance for DMaaP MR Publisher Job
 121      *
 122      * @throws SchedulerException SchedulerException
 123      */
 124     private void initializeScheduler(final TCAAppPreferences tcaAnalyticsAppConfig,
 125                                      final StdSchedulerFactory stdSchedulerFactory) throws SchedulerException {
 126
 127         // Get Publisher polling interval
 128         final Integer publisherPollingInterval = tcaAnalyticsAppConfig.getPublisherPollingInterval();
 129
 130         // Publisher Quartz Properties file
 131         final String quartzPublisherPropertiesFileName = AnalyticsConstants.TCA_QUARTZ_PUBLISHER_PROPERTIES_FILE_NAME;
 132
 133         // Create a new JobDataMap containing information required by TCA DMaaP Publisher Job
 134         final JobDataMap jobDataMap = new JobDataMap();
 135         jobDataMap.put(AnalyticsConstants.CDAP_ALERTS_TABLE_VARIABLE_NAME, tcaVESAlertsTableName);
 136         jobDataMap.put(AnalyticsConstants.WORKER_CONTEXT_VARIABLE_NAME, getContext());
 137         jobDataMap.put(AnalyticsConstants.DMAAP_PUBLISHER_VARIABLE_NAME, publisher);
 138         jobDataMap.put(AnalyticsConstants.DMAAP_METRICS_VARIABLE_NAME, metrics);
 139
 140         // Create new publisher scheduler
 141         scheduler = TCAUtils.createQuartzScheduler(publisherPollingInterval, stdSchedulerFactory,
 142                 quartzPublisherPropertiesFileName, jobDataMap, TCADMaaPMRPublisherJob.class,
 143                 AnalyticsConstants.TCA_DMAAP_PUBLISHER_QUARTZ_JOB_NAME,
 144                 AnalyticsConstants.TCA_DMAAP_PUBLISHER_QUARTZ_TRIGGER_NAME);
 145     }
 146 }