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 }