Java tutorial
/* * (C) Copyright 2014-2016 Hewlett Packard Enterprise Development Company LP * * 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. */ package monasca.persister.repository.influxdb; import monasca.common.model.event.AlarmStateTransitionedEvent; import com.google.inject.Inject; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.PropertyNamingStrategy; import org.joda.time.DateTime; import org.joda.time.DateTimeZone; import org.joda.time.format.DateTimeFormatter; import org.joda.time.format.ISODateTimeFormat; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.HashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import io.dropwizard.setup.Environment; import monasca.persister.repository.RepoException; public class InfluxV9AlarmRepo extends InfluxAlarmRepo { private static final Logger logger = LoggerFactory.getLogger(InfluxV9AlarmRepo.class); private final InfluxV9RepoWriter influxV9RepoWriter; private final ObjectMapper objectMapper = new ObjectMapper(); private final DateTimeFormatter dateFormatter = ISODateTimeFormat.dateTime(); @Inject public InfluxV9AlarmRepo(final Environment env, final InfluxV9RepoWriter influxV9RepoWriter) { super(env); this.influxV9RepoWriter = influxV9RepoWriter; this.objectMapper .setPropertyNamingStrategy(PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES); } @Override protected int write(String id) throws RepoException { return this.influxV9RepoWriter.write(getInfluxPointArry(id), id); } private InfluxPoint[] getInfluxPointArry(String id) { List<InfluxPoint> influxPointList = new LinkedList<>(); for (AlarmStateTransitionedEvent event : this.alarmStateTransitionedEventList) { Map<String, Object> valueMap = new HashMap<>(); if (event.tenantId == null) { logger.error("[{}]: tenant id cannot be null. Dropping alarm state history event.", id); continue; } else { valueMap.put("tenant_id", event.tenantId); } if (event.alarmId == null) { logger.error("[{}]: alarm id cannot be null. Dropping alarm state history event.", id); continue; } else { valueMap.put("alarm_id", event.alarmId); } if (event.metrics == null) { logger.error("[{}]: metrics cannot be null. Settings metrics to empty JSON", id); valueMap.put("metrics", "{}"); } else { try { valueMap.put("metrics", this.objectMapper.writeValueAsString(event.metrics)); } catch (JsonProcessingException e) { logger.error("[{}]: failed to serialize metrics {}", id, event.metrics, e); logger.error("[{}]: setting metrics to empty JSON", id); valueMap.put("metrics", "{}"); } } if (event.oldState == null) { logger.error("[{}]: old state cannot be null. Setting old state to empty string.", id); valueMap.put("old_state", ""); } else { valueMap.put("old_state", event.oldState); } if (event.newState == null) { logger.error("[{}]: new state cannot be null. Setting new state to empty string.", id); valueMap.put("new_state", ""); } else { valueMap.put("new_state", event.newState); } if (event.link == null) { valueMap.put("link", ""); } else { valueMap.put("link", event.link); } if (event.lifecycleState == null) { valueMap.put("lifecycle_state", ""); } else { valueMap.put("lifecycle_state", event.lifecycleState); } if (event.subAlarms == null) { logger.debug("[{}]: sub alarms is null. Setting sub alarms to empty JSON", id); valueMap.put("sub_alarms", "[]"); } else { try { valueMap.put("sub_alarms", this.objectMapper.writeValueAsString(event.subAlarms)); } catch (JsonProcessingException e) { logger.error("[{}]: failed to serialize sub alarms {}", id, event.subAlarms, e); logger.error("[{}]: Setting sub_alarms to empty JSON", id); valueMap.put("sub_alarms", "[]"); } } if (event.stateChangeReason == null) { logger.error("[{}]: reason cannot be null. Setting reason to empty string.", id); valueMap.put("reason", ""); } else { valueMap.put("reason", event.stateChangeReason); } valueMap.put("reason_data", "{}"); DateTime dateTime = new DateTime(event.timestamp, DateTimeZone.UTC); String dateString = this.dateFormatter.print(dateTime); Map<String, String> tags = new HashMap<>(); tags.put("tenant_id", event.tenantId); tags.put("alarm_id", event.alarmId); InfluxPoint influxPoint = new InfluxPoint(ALARM_STATE_HISTORY_NAME, tags, dateString, valueMap); influxPointList.add(influxPoint); } return influxPointList.toArray(new InfluxPoint[influxPointList.size()]); } }