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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.onap.dcae.apod.analytics.cdap.common.persistance.tca;
import co.cask.cdap.api.data.schema.Schema;
import co.cask.cdap.api.data.schema.UnsupportedTypeException;
import co.cask.cdap.api.dataset.DatasetProperties;
import co.cask.cdap.api.dataset.lib.IndexedTable;
import co.cask.cdap.api.dataset.lib.ObjectMappedTable;
import co.cask.cdap.api.dataset.lib.ObjectMappedTableProperties;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import org.onap.dcae.apod.analytics.cdap.common.CDAPComponentsConstants;
import org.onap.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
import org.onap.dcae.apod.analytics.common.utils.PersistenceUtils;
import org.onap.dcae.apod.analytics.model.domain.cef.EventListener;
import org.onap.dcae.apod.analytics.model.domain.policy.tca.MetricsPerEventName;
import org.onap.dcae.apod.analytics.model.domain.policy.tca.Threshold;
import org.onap.dcae.apod.analytics.model.facade.tca.TCAVESResponse;
import org.onap.dcae.apod.analytics.model.util.AnalyticsModelJsonUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;
import java.io.IOException;
import java.util.Date;
import java.util.List;
import java.util.Set;
import static org.onap.dcae.apod.analytics.common.utils.PersistenceUtils.TABLE_ROW_KEY_COLUMN_NAME;
/**
* Utility methods to persist TCA Alerts Abatement information
*
* @author Rajiv Singla . Creation Date: 9/11/2017.
*/
public abstract class TCAAlertsAbatementPersister {
private static final Logger LOG = LoggerFactory.getLogger(TCAAlertsAbatementPersister.class);
private static final Joiner KEY_JOINER = Joiner.on(PersistenceUtils.ROW_KEY_DELIMITER);
private TCAAlertsAbatementPersister() {
// private constructor
}
/**
* Creates {@link DatasetProperties} for Alerts Table
*
* @param timeToLiveSeconds alerts table Time to Live
*
* @return Alerts Abatement table properties
*/
public static DatasetProperties getDatasetProperties(final int timeToLiveSeconds) {
try {
return ObjectMappedTableProperties.builder()
.setType(TCAAlertsAbatementEntity.class)
.setRowKeyExploreName(TABLE_ROW_KEY_COLUMN_NAME)
.setRowKeyExploreType(Schema.Type.STRING)
.add(IndexedTable.PROPERTY_TTL, timeToLiveSeconds)
.setDescription(CDAPComponentsConstants.TCA_FIXED_ALERTS_ABATEMENT_DESCRIPTION_TABLE)
.build();
} catch (UnsupportedTypeException e) {
final String errorMessage = "Unable to convert TCAAlertsAbatementEntity class to Schema";
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
}
public static void persist(final EventListener eventListener,
final MetricsPerEventName violatedMetricsPerEventName,
final TCAVESResponse tcavesResponse,
final String abatementTS,
final ObjectMappedTable<TCAAlertsAbatementEntity> tcaAlertsAbatementTable,
final Set<HostAndPort> redisHostAndPorts) {
final String abatementTableKey = createKey(eventListener, violatedMetricsPerEventName);
final long currentTimestamp = new Date().getTime();
final String requestID = tcavesResponse.getRequestID();
final TCAAlertsAbatementEntity tcaAlertsAbatementEntity = new TCAAlertsAbatementEntity(currentTimestamp,
requestID, abatementTS);
// if redis is enabled save entity in redis cluster
if (redisHostAndPorts != null) {
persistAlertAbatementEntityInRedis(redisHostAndPorts, abatementTableKey, tcaAlertsAbatementEntity);
} else {
tcaAlertsAbatementTable.write(abatementTableKey, tcaAlertsAbatementEntity);
}
LOG.debug("Persisted AlertsAbatementEntity: {} with Key: {}", tcaAlertsAbatementEntity, abatementTableKey);
}
public static TCAAlertsAbatementEntity lookUpByKey(final EventListener eventListener,
final MetricsPerEventName violatedMetricsPerEventName,
final ObjectMappedTable<TCAAlertsAbatementEntity>
tcaAlertsAbatementTable,
final Set<HostAndPort> redisHostAndPorts) {
final String abatementTableKey = createKey(eventListener, violatedMetricsPerEventName);
// if redis is enabled get entity from redis cluster
if (redisHostAndPorts != null) {
return getAlertAbatementEntityFromRedis(redisHostAndPorts, abatementTableKey);
}
return tcaAlertsAbatementTable.read(abatementTableKey);
}
public static String createKey(final EventListener eventListener,
final MetricsPerEventName violatedMetricsPerEventName) {
// no null check required as all are required fields
final String eventName = violatedMetricsPerEventName.getEventName();
final String sourceName = eventListener.getEvent().getCommonEventHeader().getSourceName();
final String reportingEntityName = eventListener.getEvent().getCommonEventHeader().getReportingEntityName();
// violated threshold will always be present
final Threshold violatedThreshold = violatedMetricsPerEventName.getThresholds().get(0);
final String closedLoopControlName = violatedThreshold.getClosedLoopControlName();
final String fieldPath = violatedThreshold.getFieldPath();
final List<String> abatementKeyList =
ImmutableList.of(eventName, sourceName, reportingEntityName, closedLoopControlName, fieldPath);
return KEY_JOINER.join(abatementKeyList);
}
private static TCAAlertsAbatementEntity getAlertAbatementEntityFromRedis(final Set<HostAndPort> redisHostAndPorts,
final String abatementTableKey) {
try (final JedisCluster jedisCluster = new JedisCluster(redisHostAndPorts)) {
if (jedisCluster.exists(abatementTableKey)) {
return AnalyticsModelJsonUtils.readValue(jedisCluster.get(abatementTableKey),
TCAAlertsAbatementEntity.class);
} else {
return null;
}
} catch (IOException e) {
final String errorMessage = String.format("Unable to look up key: %s in redis cluster: %s",
abatementTableKey, redisHostAndPorts);
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
}
private static void persistAlertAbatementEntityInRedis(final Set<HostAndPort> redisHostAndPorts,
final String abatementTableKey,
final TCAAlertsAbatementEntity tcaAlertsAbatementEntity) {
try (final JedisCluster jedisCluster = new JedisCluster(redisHostAndPorts)) {
jedisCluster.set(abatementTableKey, AnalyticsModelJsonUtils.writeValueAsString(tcaAlertsAbatementEntity));
} catch (IOException e) {
final String errorMessage = String.format("Unable to store key:value - %s:%s in redis cluster: %s",
abatementTableKey, tcaAlertsAbatementEntity, redisHostAndPorts);
throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
}
}
}
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