/**
* 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.histogram;
import com.codahale.metrics.Histogram;
import com.codahale.metrics.MetricRegistry;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.component.metrics.AbstractMetricsProducer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.component.metrics.MetricsConstants.HEADER_HISTOGRAM_VALUE;
public class HistogramProducer extends AbstractMetricsProducer<HistogramEndpoint> {
private static final Logger LOG = LoggerFactory.getLogger(HistogramProducer.class);
public HistogramProducer(HistogramEndpoint endpoint) {
super(endpoint);
}
@Override
protected void doProcess(Exchange exchange, HistogramEndpoint endpoint, MetricRegistry registry, String metricsName) throws Exception {
Message in = exchange.getIn();
Histogram histogram = registry.histogram(metricsName);
Long value = endpoint.getValue();
Long finalValue = getLongHeader(in, HEADER_HISTOGRAM_VALUE, value);
if (finalValue != null) {
histogram.update(finalValue);
} else {
LOG.warn("Cannot update histogram \"{}\" with null value", metricsName);
}
}
}