| /** |
| * |
| * |
| * |
| * 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 com.yammer.metrics.Metrics |
| import java.io.File |
| |
| import com.yammer.metrics.reporting.CsvReporter |
| import java.util.concurrent.TimeUnit |
| |
| import kafka.utils.{Logging, VerifiableProperties} |
| import org.apache.kafka.common.utils.Utils |
| |
| private trait KafkaCSVMetricsReporterMBean extends KafkaMetricsReporterMBean |
| |
| private class KafkaCSVMetricsReporter extends KafkaMetricsReporter |
| with KafkaCSVMetricsReporterMBean |
| with Logging { |
| |
| private var csvDir: File = null |
| private var underlying: CsvReporter = null |
| private var running = false |
| private var initialized = false |
| |
| |
| override def getMBeanName = "kafka:type=kafka.metrics.KafkaCSVMetricsReporter" |
| |
| |
| override def init(props: VerifiableProperties) { |
| synchronized { |
| if (!initialized) { |
| val metricsConfig = new KafkaMetricsConfig(props) |
| csvDir = new File(props.getString("kafka.csv.metrics.dir", "kafka_metrics")) |
| Utils.delete(csvDir) |
| csvDir.mkdirs() |
| underlying = new CsvReporter(Metrics.defaultRegistry(), csvDir) |
| if (props.getBoolean("kafka.csv.metrics.reporter.enabled", default = false)) { |
| initialized = true |
| startReporter(metricsConfig.pollingIntervalSecs) |
| } |
| } |
| } |
| } |
| |
| |
| override def startReporter(pollingPeriodSecs: Long) { |
| synchronized { |
| if (initialized && !running) { |
| underlying.start(pollingPeriodSecs, TimeUnit.SECONDS) |
| running = true |
| info("Started Kafka CSV metrics reporter with polling period %d seconds".format(pollingPeriodSecs)) |
| } |
| } |
| } |
| |
| |
| override def stopReporter() { |
| synchronized { |
| if (initialized && running) { |
| underlying.shutdown() |
| running = false |
| info("Stopped Kafka CSV metrics reporter") |
| underlying = new CsvReporter(Metrics.defaultRegistry(), csvDir) |
| } |
| } |
| } |
| |
| } |
| |