001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.monitoring.repositories;
019    
020    import org.apache.commons.monitoring.Role;
021    import org.apache.commons.monitoring.configuration.Configuration;
022    import org.apache.commons.monitoring.counters.Counter;
023    import org.apache.commons.monitoring.gauges.Gauge;
024    import org.apache.commons.monitoring.stopwatches.StopWatch;
025    
026    import java.util.Map;
027    
028    public interface Repository extends Iterable<Counter> {
029        static final Repository INSTANCE = Configuration.newInstance(Repository.class);
030    
031        Counter getCounter(Counter.Key key);
032        void clear();
033        StopWatch start(Counter counter);
034    
035        void addGauge(final Gauge gauge);
036        void stopGauge(Role role);
037        Map<Long, Double> getGaugeValues(long start, long end, Role role);
038    }