/*
* Copyright 2013 the original author or authors.
*
* 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 org.springframework.xd.analytics.metrics.redis;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.xd.analytics.metrics.core.Gauge;
import org.springframework.xd.analytics.metrics.core.GaugeRepository;
/**
* Redis backed implementation that uses Redis keys to store and update the value. The naming strategy for keys in Redis
* is "gauges." This means a Gauge named simpleGauge appears under the name "gauges.simpleGauge" in Redis.
*
* @author Mark Pollack
*/
public class RedisGaugeRepository extends AbstractRedisMetricRepository<Gauge, Long>
implements GaugeRepository {
public RedisGaugeRepository(RedisConnectionFactory connectionFactory) {
this(connectionFactory, "gauges.");
}
public RedisGaugeRepository(RedisConnectionFactory connectionFactory,
String gaugePrefix) {
super(connectionFactory, gaugePrefix);
}
@Override
Gauge create(String name, Long value) {
return new Gauge(name, value);
}
@Override
Long defaultValue() {
return 0L;
}
@Override
Long value(Gauge metric) {
return metric.getValue();
}
@Override
public void setValue(String name, long value) {
getValueOperations().set(getMetricKey(name), value);
}
@Override
public void reset(String name) {
getValueOperations().set(getMetricKey(name), 0L);
}
}