1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.monitoring.store; 18 19 import org.apache.commons.monitoring.Role; 20 import org.apache.commons.monitoring.counters.Counter; 21 import org.apache.commons.monitoring.gauges.Gauge; 22 23 import java.util.Collection; 24 import java.util.Map; 25 26 public interface DataStore { 27 Counter getOrCreateCounter(Counter.Key key); 28 void clearCounters(); 29 Collection<Counter> getCounters(); 30 void addToCounter(Counter defaultCounter, double delta); // sensitive method which need to be thread safe 31 32 Map<Long,Double> getGaugeValues(GaugeValuesRequest gaugeValuesRequest); 33 void createOrNoopGauge(Role role); 34 void addToGauge(Gauge gauge, long time, double value); 35 }