/**
* Copyright 2013 Netflix, Inc.
*
* Licensed 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 com.netflix.hystrix.contrib.codahalemetricspublisher;
import com.codahale.metrics.Metric;
import com.codahale.metrics.MetricFilter;
import com.netflix.config.DynamicPropertyFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* An implementation of @MetricFilter based upon an Archaius DynamicPropertyFactory
*
* To enable this filter, the property 'filter.graphite.metrics' must be set to TRUE
*
* If this is the case, metrics will be filtered unless METRIC_NAME = true is set in
* the properties
*
*
* eg HystrixCommand.IndiciaService.GetIndicia.countFailure = true
*
*
* For detail on how the metric names are constructed, refer to the source of the
*
* {@link HystrixCodaHaleMetricsPublisherCommand}
*
* and
*
* {@link HystrixCodaHaleMetricsPublisherThreadPool}
*
* classes.
*
* @author Simon Irving
*/
public class ConfigurableCodaHaleMetricFilter implements MetricFilter{
private static final Logger LOGGER = LoggerFactory.getLogger(ConfigurableCodaHaleMetricFilter.class);
private DynamicPropertyFactory archaiusPropertyFactory;
public ConfigurableCodaHaleMetricFilter(DynamicPropertyFactory archaiusPropertyFactory)
{
this.archaiusPropertyFactory = archaiusPropertyFactory;
}
@Override
public boolean matches(String s, Metric metric) {
if (!isFilterEnabled())
{
return true;
}
boolean matchesFilter = archaiusPropertyFactory.getBooleanProperty(s, false).get();
LOGGER.debug("Does metric [{}] match filter? [{}]",s,matchesFilter);
return matchesFilter;
}
protected boolean isFilterEnabled() {
boolean filterEnabled = archaiusPropertyFactory.getBooleanProperty("filter.graphite.metrics", false).get();
LOGGER.debug("Is filter enabled? [{}]", filterEnabled);
return filterEnabled;
}
}