MetricModule.java

package io.blobkeeper.common.configuration;

/*
 * Copyright (C) 2016 by Denis M. Gabaydulin
 *
 * 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.
 */

import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.Slf4jReporter;
import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.inject.Singleton;
import java.util.concurrent.TimeUnit;

public class MetricModule extends AbstractModule {
    private static final Logger metricsLogger = LoggerFactory.getLogger("metrics");

    @Override
    protected void configure() {
        // FIXME: add configuration parameter
        Slf4jReporter
                .forRegistry(createMetricRegistry())
                .outputTo(metricsLogger)
                .build()
                .start(30, TimeUnit.SECONDS);
    }

    @Provides
    @Singleton
    MetricRegistry createMetricRegistry() {
        return new MetricRegistry();
    }
}