spark StatsdSink 源码
spark StatsdSink 代码
文件路径：/core/src/main/scala/org/apache/spark/metrics/sink/StatsdSink.scala
/*
* 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.
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package org.apache.spark.metrics.sink
import java.util.{Locale, Properties}
import java.util.concurrent.TimeUnit
import com.codahale.metrics.MetricRegistry
import org.apache.spark.internal.Logging
import org.apache.spark.metrics.MetricsSystem
private[spark] object StatsdSink {
val STATSD_KEY_HOST = "host"
val STATSD_KEY_PORT = "port"
val STATSD_KEY_PERIOD = "period"
val STATSD_KEY_UNIT = "unit"
val STATSD_KEY_PREFIX = "prefix"
val STATSD_DEFAULT_HOST = "127.0.0.1"
val STATSD_DEFAULT_PORT = "8125"
val STATSD_DEFAULT_PERIOD = "10"
val STATSD_DEFAULT_UNIT = "SECONDS"
val STATSD_DEFAULT_PREFIX = ""
}
private[spark] class StatsdSink(
val property: Properties, val registry: MetricRegistry) extends Sink with Logging {
import StatsdSink._
val host = property.getProperty(STATSD_KEY_HOST, STATSD_DEFAULT_HOST)
val port = property.getProperty(STATSD_KEY_PORT, STATSD_DEFAULT_PORT).toInt
val pollPeriod = property.getProperty(STATSD_KEY_PERIOD, STATSD_DEFAULT_PERIOD).toInt
val pollUnit =
TimeUnit.valueOf(
property.getProperty(STATSD_KEY_UNIT, STATSD_DEFAULT_UNIT).toUpperCase(Locale.ROOT))
val prefix = property.getProperty(STATSD_KEY_PREFIX, STATSD_DEFAULT_PREFIX)
MetricsSystem.checkMinimalPollingPeriod(pollUnit, pollPeriod)
val reporter = new StatsdReporter(registry, host, port, prefix)
override def start(): Unit = {
reporter.start(pollPeriod, pollUnit)
logInfo(s"StatsdSink started with prefix: '$prefix'")
}
override def stop(): Unit = {
reporter.stop()
logInfo("StatsdSink stopped.")
}
override def report(): Unit = reporter.report()
}
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