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.metrics;
  
  import com.codahale.metrics.Counter;
  import com.codahale.metrics.MetricRegistry;
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  
  import static org.apache.camel.component.metrics.MetricsConstants.HEADER_COUNTER_DECREMENT;
  import static org.apache.camel.component.metrics.MetricsConstants.HEADER_COUNTER_INCREMENT;
  
  public class CounterProducer extends AbstractMetricsProducer {
  
      public CounterProducer(MetricsEndpoint endpoint) {
          super(endpoint);
      }
  
      @Override
      protected void doProcess(Exchange exchange, MetricsEndpoint endpoint, MetricRegistry registry, String metricsName)
              throws Exception {
          Message in = exchange.getIn();
          Counter counter = registry.counter(metricsName);
          Long increment = endpoint.getIncrement();
          Long decrement = endpoint.getDecrement();
          Long finalIncrement = getLongHeader(in, HEADER_COUNTER_INCREMENT, increment);
          Long finalDecrement = getLongHeader(in, HEADER_COUNTER_DECREMENT, decrement);
          if (finalIncrement != null) {
              counter.inc(finalIncrement);
          } else if (finalDecrement != null) {
              counter.dec(finalDecrement);
          } else {
              counter.inc();
          }
      }
  }
  