| /** |
| * |
| * |
| * |
| * 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 kafka.metrics |
| |
| import kafka.utils.{Utils, VerifiableProperties} |
| import java.util.concurrent.atomic.AtomicBoolean |
| |
| |
| /** |
| * Base trait for reporter MBeans. If a client wants to expose these JMX |
| * operations on a custom reporter (that implements |
| * [[kafka.metrics.KafkaMetricsReporter]]), the custom reporter needs to |
| * additionally implement an MBean trait that extends this trait so that the |
| * registered MBean is compliant with the standard MBean convention. |
| */ |
| trait KafkaMetricsReporterMBean { |
| def startReporter(pollingPeriodInSeconds: Long) |
| def stopReporter() |
| |
| /** |
| * |
| * @return The name with which the MBean will be registered. |
| */ |
| def getMBeanName: String |
| } |
| |
| |
| trait KafkaMetricsReporter { |
| def init(props: VerifiableProperties) |
| } |
| |
| object KafkaMetricsReporter { |
| val ReporterStarted: AtomicBoolean = new AtomicBoolean(false) |
| |
| def startReporters (verifiableProps: VerifiableProperties) { |
| ReporterStarted synchronized { |
| if (ReporterStarted.get() == false) { |
| val metricsConfig = new KafkaMetricsConfig(verifiableProps) |
| if(metricsConfig.reporters.size > 0) { |
| metricsConfig.reporters.foreach(reporterType => { |
| val reporter = Utils.createObject[KafkaMetricsReporter](reporterType) |
| reporter.init(verifiableProps) |
| if (reporter.isInstanceOf[KafkaMetricsReporterMBean]) |
| Utils.registerMBean(reporter, reporter.asInstanceOf[KafkaMetricsReporterMBean].getMBeanName) |
| }) |
| ReporterStarted.set(true) |
| } |
| } |
| } |
| } |
| } |
| |