/*
    * 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.
   */
  package org.apache.commons.monitoring.repositories;
  
  import org.apache.commons.monitoring.Role;
  import org.apache.commons.monitoring.configuration.Configuration;
  import org.apache.commons.monitoring.counters.Counter;
  import org.apache.commons.monitoring.gauges.DefaultGaugeManager;
  import org.apache.commons.monitoring.gauges.Gauge;
  import org.apache.commons.monitoring.stopwatches.CounterStopWatch;
  import org.apache.commons.monitoring.stopwatches.StopWatch;
  import org.apache.commons.monitoring.store.DataStore;
  import org.apache.commons.monitoring.store.GaugeValuesRequest;
  
  import java.util.Iterator;
  import java.util.Map;
  
  public class DefaultRepository implements Repository {
      private final DataStore dataStore;
      private final DefaultGaugeManager gaugeManager;
  
      public DefaultRepository() {
          this.dataStore = Configuration.newInstance(DataStore.class);
          this.gaugeManager = new DefaultGaugeManager(dataStore);
      }
  
      @Configuration.Destroying
      public void stopGaugeTimers() {
          gaugeManager.stop();
      }
  
      @Override
      public Counter getCounter(final Counter.Key key) {
          return dataStore.getOrCreateCounter(key);
      }
  
      @Override
      public void clear() {
          dataStore.clearCounters();
      }
  
      @Override
      public StopWatch start(final Counter monitor) {
          return new CounterStopWatch(monitor);
      }
  
      @Override
      public Iterator<Counter> iterator() {
          return dataStore.getCounters().iterator();
      }
  
      @Override
      public Map<Long, Double> getGaugeValues(final long start, final long end, final Role role) {
          return dataStore.getGaugeValues(new GaugeValuesRequest(start, end, role));
      }
  
      @Override
      public void addGauge(final Gauge gauge) {
          gaugeManager.addGauge(gauge);
      }
  
      @Override
      public void stopGauge(final Role role) {
          gaugeManager.stopGauge(role);
      }
  }