monasca-persister/src/main/java/com/hpcloud/mon/persister/repository/VerticaAlarmStateHistoryRep...

94 lines
3.8 KiB
Java

/*
* Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.hpcloud.mon.persister.repository;
import com.codahale.metrics.Timer;
import com.hpcloud.mon.common.event.AlarmStateTransitionedEvent;
import com.hpcloud.mon.persister.configuration.MonPersisterConfiguration;
import io.dropwizard.setup.Environment;
import org.skife.jdbi.v2.DBI;
import org.skife.jdbi.v2.PreparedBatch;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import java.security.NoSuchAlgorithmException;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
public class VerticaAlarmStateHistoryRepository extends VerticaRepository {
private static final Logger logger = LoggerFactory.getLogger(VerticaAlarmStateHistoryRepository.class);
private final MonPersisterConfiguration configuration;
private final Environment environment;
private static final String SQL_INSERT_INTO_ALARM_HISTORY =
"insert into MonAlarms.StateHistory (tenant_id, alarm_id, old_state, new_state, reason, reason_data, time_stamp) values (:tenant_id, :alarm_id, :old_state, :new_state, :reason, :reason_data, :time_stamp)";
private PreparedBatch batch;
private final Timer commitTimer;
private final SimpleDateFormat simpleDateFormat;
@Inject
public VerticaAlarmStateHistoryRepository(DBI dbi, MonPersisterConfiguration configuration,
Environment environment) throws NoSuchAlgorithmException, SQLException {
super(dbi);
logger.debug("Instantiating: " + this);
this.configuration = configuration;
this.environment = environment;
this.commitTimer = this.environment.metrics().timer(this.getClass().getName() + "." + "commits-timer");
handle.getConnection().setAutoCommit(false);
batch = handle.prepareBatch(SQL_INSERT_INTO_ALARM_HISTORY);
handle.begin();
simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
simpleDateFormat.setTimeZone(TimeZone.getTimeZone("GMT-0"));
}
public void addToBatch(AlarmStateTransitionedEvent message) {
String timeStamp = simpleDateFormat.format(new Date(message.timestamp * 1000));
batch.add()
.bind(0, message.tenantId)
.bind(1, message.alarmId)
.bind(2, message.oldState.name())
.bind(3, message.newState.name())
.bind(4, message.stateChangeReason)
.bind(5, "{}")
.bind(6, timeStamp);
}
public void flush() {
commitBatch();
}
private void commitBatch() {
long startTime = System.currentTimeMillis();
Timer.Context context = commitTimer.time();
batch.execute();
handle.commit();
handle.begin();
context.stop();
long endTime = System.currentTimeMillis();
logger.debug("Commiting batch took " + (endTime - startTime) / 1000 + " seconds");
}
}