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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.TxRunnable;
import co.cask.cdap.api.common.Bytes;
import co.cask.cdap.api.data.DatasetContext;
import co.cask.cdap.api.dataset.lib.CloseableIterator;
import co.cask.cdap.api.dataset.lib.KeyValue;
import co.cask.cdap.api.dataset.lib.ObjectMappedTable;
import co.cask.cdap.api.metrics.Metrics;
import co.cask.cdap.api.worker.WorkerContext;
import com.google.common.base.Joiner;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import org.apache.tephra.TransactionFailureException;
import org.openecomp.dcae.apod.analytics.cdap.common.CDAPMetricsConstants;
import org.openecomp.dcae.apod.analytics.cdap.common.persistance.tca.TCAVESAlertEntity;
import org.openecomp.dcae.apod.analytics.cdap.common.persistance.tca.TCAVESAlertsPersister;
import org.openecomp.dcae.apod.analytics.cdap.tca.utils.CDAPTCAUtils;
import org.openecomp.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
import org.openecomp.dcae.apod.analytics.common.utils.HTTPUtils;
import org.openecomp.dcae.apod.analytics.dmaap.domain.response.DMaaPMRPublisherResponse;
import org.openecomp.dcae.apod.analytics.dmaap.service.publisher.DMaaPMRPublisher;
import org.quartz.DisallowConcurrentExecution;
import org.quartz.Job;
import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.PersistJobDataAfterExecution;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import static org.openecomp.dcae.apod.analytics.common.AnalyticsConstants.CDAP_ALERTS_TABLE_VARIABLE_NAME;
import static org.openecomp.dcae.apod.analytics.common.AnalyticsConstants.DMAAP_METRICS_VARIABLE_NAME;
import static org.openecomp.dcae.apod.analytics.common.AnalyticsConstants.DMAAP_PUBLISHER_VARIABLE_NAME;
import static org.openecomp.dcae.apod.analytics.common.AnalyticsConstants.WORKER_CONTEXT_VARIABLE_NAME;
/**
* Quartz Job that will monitor any new alert messages in given TCA Alerts table and if any found publish them to
* DMaaP MR topic
*<p>
* @author Rajiv Singla . Creation Date: 11/17/2016.
*/
@DisallowConcurrentExecution
@PersistJobDataAfterExecution
@SuppressFBWarnings("SIC_INNER_SHOULD_BE_STATIC_ANON")
public class TCADMaaPMRPublisherJob implements Job {
private static final Logger LOG = LoggerFactory.getLogger(TCADMaaPMRPublisherJob.class);
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
LOG.debug("Starting DMaaP MR Topic Publisher fetch Job. Next firing time will be: {}",
jobExecutionContext.getNextFireTime());
// Get Job Data Map
final JobDataMap jobDataMap = jobExecutionContext.getMergedJobDataMap();
// Fetch all Job Params from Job Data Map
final String cdapAlertsTableName = jobDataMap.getString(CDAP_ALERTS_TABLE_VARIABLE_NAME);
final WorkerContext workerContext = (WorkerContext) jobDataMap.get(WORKER_CONTEXT_VARIABLE_NAME);
final DMaaPMRPublisher publisher = (DMaaPMRPublisher) jobDataMap.get(DMAAP_PUBLISHER_VARIABLE_NAME);
final Metrics metrics = (Metrics) jobDataMap.get(DMAAP_METRICS_VARIABLE_NAME);
LOG.debug("Start looking for new message in Alerts Table: {}", cdapAlertsTableName);
// Get new alerts from alerts table
final Map<String, TCAVESAlertEntity> newAlertsMap = getNewAlertsMap(cdapAlertsTableName, workerContext);
// If no new alerts are found - nothing to publish
if (newAlertsMap.isEmpty()) {
LOG.debug("No new alerts found in Alerts Table name: {}. Nothing to Publisher....", cdapAlertsTableName);
metrics.count(CDAPMetricsConstants.TCA_PUBLISHER_NO_NEW_ALERTS_LOOKUP_METRIC, 1);
return;
}
final int newAlertsCount = newAlertsMap.size();
LOG.debug("Found new alerts in Alerts Table name: {}. No of new alerts: {}", cdapAlertsTableName,
newAlertsCount);
metrics.count(CDAPMetricsConstants.TCA_PUBLISHER_NEW_ALERTS_METRIC, newAlertsCount);
// Get alert message strings from alert Entities
final List<String> newAlertsMessages = CDAPTCAUtils.extractAlertFromAlertEntities(newAlertsMap.values());
// Publish messages to DMaaP MR Topic
try {
final DMaaPMRPublisherResponse publisherResponse = publisher.publish(newAlertsMessages);
final Integer responseCode = publisherResponse.getResponseCode();
final String responseMessage = publisherResponse.getResponseMessage();
final int pendingMessagesCount = publisherResponse.getPendingMessagesCount();
LOG.debug("Publisher Response Code: {}, Publisher message: {}, Pending Messages Count: {}", responseCode,
responseMessage, pendingMessagesCount);
if (HTTPUtils.isSuccessfulResponseCode(responseCode)) {
LOG.debug("Successfully Published alerts to DMaaP MR Topic.");
metrics.count(CDAPMetricsConstants.TCA_PUBLISHER_SUCCESSFUL_DMAAP_RESPONSE_METRIC, 1);
} else {
LOG.warn("Unable to publish alerts to DMaaP MR Topic. Publisher will try to send it later....");
metrics.count(CDAPMetricsConstants.TCA_PUBLISHER_UNSUCCESSFUL_DMAAP_RESPONSE_METRIC, 1);
}
} catch (DCAEAnalyticsRuntimeException e) {
LOG.error("Exception while publishing messages to DMaaP MR Topic: {}", e);
} finally {
// delete send message from alerts table
deleteAlertsByKey(cdapAlertsTableName, workerContext, newAlertsMap.keySet(), metrics);
}
LOG.debug("Finished DMaaP MR Topic Publisher fetch Job.");
}
/**
* Gets New Messages from alerts table as Map with row keys as keys and {@link TCAVESAlertEntity} as values
*
* @param cdapAlertsTableName alerts table name
* @param workerContext worker context
* @return Map with row keys as keys and {@link TCAVESAlertEntity} as values
*/
protected Map<String, TCAVESAlertEntity> getNewAlertsMap(final String cdapAlertsTableName,
final WorkerContext workerContext) {
final Map<String, TCAVESAlertEntity> newAlertsMap = new LinkedHashMap<>();
try {
workerContext.execute(new TxRunnable() {
@Override
public void run(DatasetContext context) throws Exception {
final ObjectMappedTable<TCAVESAlertEntity> alertsTable = context.getDataset(cdapAlertsTableName);
final Date currentTime = new Date();
final String rowKey = TCAVESAlertsPersister.createRowKey(currentTime);
final CloseableIterator<KeyValue<byte[], TCAVESAlertEntity>> scan = alertsTable.scan(null, rowKey);
while (scan.hasNext()) {
final KeyValue<byte[], TCAVESAlertEntity> alertEntityKeyValue = scan.next();
newAlertsMap.put(Bytes.toString(alertEntityKeyValue.getKey()), alertEntityKeyValue.getValue());
}
}
});
} catch (TransactionFailureException e) {
final String errorMessage = "Transaction Error while getting new alerts from alerts table: " + e.toString();
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
return newAlertsMap;
}
/**
* Deletes rows in Alerts table for give rowKeys
*
* @param cdapAlertsTableName CDAP Alerts Table Name
* @param workerContext Worker Context
* @param rowKeys Row Key Set
* @param metrics CDAP metrics
*/
protected void deleteAlertsByKey(final String cdapAlertsTableName, final WorkerContext workerContext,
final Set<String> rowKeys, final Metrics metrics) {
LOG.debug("Deleting Published Alerts from alerts table with rowKeys: {}", Joiner.on(",").join(rowKeys));
try {
workerContext.execute(new TxRunnable() {
@Override
public void run(DatasetContext context) throws Exception {
final ObjectMappedTable<TCAVESAlertEntity> alertsTable = context.getDataset(cdapAlertsTableName);
for (String rowKey : rowKeys) {
alertsTable.delete(rowKey);
metrics.count(CDAPMetricsConstants.TCA_PUBLISHER_DELETED_ALERTS_METRIC, 1);
}
}
});
} catch (TransactionFailureException e) {
final String errorMessage =
"Transaction Error while deleting published alerts in alerts table: " + e.toString();
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
}
}
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