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/*
* 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.spark.metrics
import java.util.Properties
import java.io.{File, FileInputStream, InputStream, IOException}
import scala.collection.mutable
import scala.util.matching.Regex
import org.apache.spark.Logging
private[spark] class MetricsConfig(val configFile: Option[String]) extends Logging {
initLogging()
val DEFAULT_PREFIX = "*"
val INSTANCE_REGEX = "^(\\*|[a-zA-Z]+)\\.(.+)".r
val METRICS_CONF = "metrics.properties"
val properties = new Properties()
var propertyCategories: mutable.HashMap[String, Properties] = null
private def setDefaultProperties(prop: Properties) {
prop.setProperty("*.sink.servlet.class", "org.apache.spark.metrics.sink.MetricsServlet")
prop.setProperty("*.sink.servlet.uri", "/metrics/json")
prop.setProperty("*.sink.servlet.sample", "false")
prop.setProperty("master.sink.servlet.uri", "/metrics/master/json")
prop.setProperty("applications.sink.servlet.uri", "/metrics/applications/json")
}
def initialize() {
//Add default properties in case there's no properties file
setDefaultProperties(properties)
// If spark.metrics.conf is not set, try to get file in class path
var is: InputStream = null
try {
is = configFile match {
case Some(f) => new FileInputStream(f)
case None => getClass.getClassLoader.getResourceAsStream(METRICS_CONF)
}
if (is != null) {
properties.load(is)
}
} catch {
case e: Exception => logError("Error loading configure file", e)
} finally {
if (is != null) is.close()
}
propertyCategories = subProperties(properties, INSTANCE_REGEX)
if (propertyCategories.contains(DEFAULT_PREFIX)) {
import scala.collection.JavaConversions._
val defaultProperty = propertyCategories(DEFAULT_PREFIX)
for { (inst, prop) <- propertyCategories
if (inst != DEFAULT_PREFIX)
(k, v) <- defaultProperty
if (prop.getProperty(k) == null) } {
prop.setProperty(k, v)
}
}
}
def subProperties(prop: Properties, regex: Regex): mutable.HashMap[String, Properties] = {
val subProperties = new mutable.HashMap[String, Properties]
import scala.collection.JavaConversions._
prop.foreach { kv =>
if (regex.findPrefixOf(kv._1) != None) {
val regex(prefix, suffix) = kv._1
subProperties.getOrElseUpdate(prefix, new Properties).setProperty(suffix, kv._2)
}
}
subProperties
}
def getInstance(inst: String): Properties = {
propertyCategories.get(inst) match {
case Some(s) => s
case None => propertyCategories.getOrElse(DEFAULT_PREFIX, new Properties)
}
}
}
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