kafka FilteringJmxReporter 源码
kafka FilteringJmxReporter 代码
文件路径：/server-common/src/main/java/org/apache/kafka/server/metrics/FilteringJmxReporter.java
/*
* 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.kafka.server.metrics;
import com.yammer.metrics.core.Metric;
import com.yammer.metrics.core.MetricName;
import com.yammer.metrics.core.MetricsRegistry;
import com.yammer.metrics.reporting.JmxReporter;
import java.util.function.Predicate;
public class FilteringJmxReporter extends JmxReporter {
private volatile Predicate<MetricName> metricPredicate;
public FilteringJmxReporter(MetricsRegistry registry, Predicate<MetricName> metricPredicate) {
super(registry);
this.metricPredicate = metricPredicate;
}
@Override
public void onMetricAdded(MetricName name, Metric metric) {
if (metricPredicate.test(name)) {
super.onMetricAdded(name, metric);
}
}
public void updatePredicate(Predicate<MetricName> predicate) {
this.metricPredicate = predicate;
// re-register metrics on update
getMetricsRegistry()
.allMetrics()
.forEach((name, metric) -> {
if (metricPredicate.test(name)) {
super.onMetricAdded(name, metric);
} else {
super.onMetricRemoved(name);
}
}
);
}
}
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