content: /*
   * 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.camel.component.micrometer.eventnotifier;
  
  import java.util.concurrent.atomic.AtomicLong;
  
  import io.micrometer.core.instrument.Gauge;
  import org.apache.camel.spi.CamelEvent;
  import org.apache.camel.spi.CamelEvent.RouteAddedEvent;
  import org.apache.camel.spi.CamelEvent.RouteEvent;
  import org.apache.camel.spi.CamelEvent.RouteReloadedEvent;
  import org.apache.camel.spi.CamelEvent.RouteRemovedEvent;
  import org.apache.camel.spi.CamelEvent.RouteStartedEvent;
  import org.apache.camel.spi.CamelEvent.RouteStoppedEvent;
  import org.apache.camel.spi.ManagementStrategy;
  
  public class MicrometerRouteEventNotifier extends AbstractMicrometerEventNotifier<RouteEvent> {
  
      private final AtomicLong routesAdded = new AtomicLong();
      private final AtomicLong routesRunning = new AtomicLong();
      private final AtomicLong routesReloaded = new AtomicLong();
      private Gauge gaugeAdded;
      private Gauge gaugeRunning;
      private Gauge gaugeReloaded;
      private MicrometerRouteEventNotifierNamingStrategy namingStrategy = MicrometerRouteEventNotifierNamingStrategy.DEFAULT;
      boolean registerKamelets;
      boolean registerTemplates = true;
  
      public MicrometerRouteEventNotifier() {
          super(RouteEvent.class);
      }
  
      public MicrometerRouteEventNotifierNamingStrategy getNamingStrategy() {
          return namingStrategy;
      }
  
      public void setNamingStrategy(MicrometerRouteEventNotifierNamingStrategy namingStrategy) {
          this.namingStrategy = namingStrategy;
      }
  
      @Override
      protected void doInit() throws Exception {
          ManagementStrategy ms = getCamelContext().getManagementStrategy();
          if (ms != null && ms.getManagementAgent() != null) {
              registerKamelets = ms.getManagementAgent().getRegisterRoutesCreateByKamelet();
              registerTemplates = ms.getManagementAgent().getRegisterRoutesCreateByTemplate();
          }
      }
  
      @Override
      protected void doStart() throws Exception {
          super.doStart();
  
          gaugeAdded = Gauge.builder(namingStrategy.getRouteAddedName(), routesAdded, value -> (double) value.get())
                  .baseUnit("routes")
                  .tags(namingStrategy.getTags(getCamelContext()))
                  .register(getMeterRegistry());
          gaugeRunning = Gauge.builder(namingStrategy.getRouteRunningName(), routesRunning, value -> (double) value.get())
                  .baseUnit("routes")
                  .tags(namingStrategy.getTags(getCamelContext()))
                  .register(getMeterRegistry());
          gaugeReloaded = Gauge.builder(namingStrategy.getRouteReloadedName(), routesReloaded, value -> (double) value.get())
                  .baseUnit("routes")
                  .tags(namingStrategy.getTags(getCamelContext()))
                  .register(getMeterRegistry());
      }
  
      @Override
      protected void doStop() throws Exception {
          super.doStop();
  
          if (gaugeAdded != null) {
              getMeterRegistry().remove(gaugeAdded);
          }
          if (gaugeRunning != null) {
              getMeterRegistry().remove(gaugeRunning);
          }
          if (gaugeReloaded != null) {
              getMeterRegistry().remove(gaugeReloaded);
          }
      }
  
      @Override
      public void notify(CamelEvent eventObject) {
          if (eventObject instanceof RouteEvent re) {
              // skip routes that should not be included
              boolean skip = (re.getRoute().isCreatedByKamelet() && !registerKamelets)
                      || (re.getRoute().isCreatedByRouteTemplate() && !registerTemplates);
              if (skip) {
                  return;
              }
          }
          if (eventObject instanceof RouteAddedEvent) {
              routesAdded.incrementAndGet();
          } else if (eventObject instanceof RouteRemovedEvent) {
              routesAdded.decrementAndGet();
          } else if (eventObject instanceof RouteStartedEvent) {
              routesRunning.incrementAndGet();
          } else if (eventObject instanceof RouteStoppedEvent) {
              routesRunning.decrementAndGet();
          } else if (eventObject instanceof RouteReloadedEvent) {
              routesReloaded.incrementAndGet();
          }
      }
  }
  