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/*
* Copyright (C) 2016 Brett Wooldridge
*
* 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 com.zaxxer.hikari.metrics.prometheus;
import com.zaxxer.hikari.metrics.IMetricsTracker;
import com.zaxxer.hikari.metrics.MetricsTrackerFactory;
import com.zaxxer.hikari.metrics.PoolStats;
/**
* <pre>{@code
* HikariConfig config = new HikariConfig();
* config.setMetricsTrackerFactory(new PrometheusMetricsTrackerFactory());
* }</pre>
*/
public class PrometheusMetricsTrackerFactory implements MetricsTrackerFactory {
private static HikariCPCollector collector;
@Override
public IMetricsTracker create(String poolName, PoolStats poolStats) {
getCollector().add(poolName, poolStats);
return new PrometheusMetricsTracker(poolName);
}
/**
* initialize and register collector if it isn't initialized yet
*/
private HikariCPCollector getCollector() {
if (collector == null) {
collector = new HikariCPCollector().register();
}
return collector;
}
}
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