refactor metrics system

1.change source abstract class to support MetricRegistry
2.change master/work/jvm source class

core/src/main/scala/spark/deploy/master/MasterInstrumentation.scala

@@ -4,32 +4,32 @@ import java.util.{Map, HashMap => JHashMap}
 
 import com.codahale.metrics.{Gauge, Metric}
 
+import com.codahale.metrics.{JmxReporter, MetricSet, MetricRegistry}
+
 import spark.metrics.source.Source
+import spark.Logging
 
 private[spark] class MasterInstrumentation(val master: Master) extends Source {
   val className = classOf[Master].getName()
   val instrumentationName = "master"
-    
-  override def sourceName = instrumentationName
-  
-  override def getMetrics(): Map[String, Metric] = {
-    val gauges = new JHashMap[String, Metric]
-    
-    // Gauge for worker numbers in cluster
-    gauges.put(className + ".workers.number", new Gauge[Int] {
+  val metricRegistry = new MetricRegistry()    
+  val sourceName = instrumentationName
+
+  metricRegistry.register(MetricRegistry.name("workers","number"), 
+       new Gauge[Int] {
       override def getValue: Int = master.workers.size
-    })
-    
-    // Gauge for application numbers in cluster
-    gauges.put(className + ".apps.number", new Gauge[Int] {
-      override def getValue: Int = master.apps.size
-    })
-    
-    // Gauge for waiting application numbers in cluster
-    gauges.put(className + ".waiting_apps.number", new Gauge[Int] {
+  })
+  
+  // Gauge for application numbers in cluster
+  metricRegistry.register(MetricRegistry.name("apps", "number"),
+    new Gauge[Int] {
+         override def getValue: Int = master.apps.size
+  })
+
+  // Gauge for waiting application numbers in cluster
+  metricRegistry.register(MetricRegistry.name("waiting_apps", "number"), 
+    new Gauge[Int] {
       override def getValue: Int = master.waitingApps.size
-    })
-    
-    gauges
-  }
-}
\ No newline at end of file
+  })
+
+}

core/src/main/scala/spark/deploy/worker/WorkerInstrumentation.scala

@@ -4,86 +4,42 @@ import com.codahale.metrics.{Gauge, Metric}
 
 import java.util.{Map, HashMap => JHashMap}
 
+import com.codahale.metrics.{JmxReporter, MetricSet, MetricRegistry}
 import spark.metrics.source.Source
 
 private[spark] class WorkerInstrumentation(val worker: Worker) extends Source {
   val className = classOf[Worker].getName()
   
-  override def sourceName = "worker"
-    
-  override def getMetrics: Map[String, Metric] = {
-    val gauges = new JHashMap[String, Metric]
-    
-    // Gauge for executors number
-    gauges.put(className + ".executor.number", new Gauge[Int]{
+  val sourceName = "worker"
+  
+  val metricRegistry = new MetricRegistry()
+
+  metricRegistry.register(MetricRegistry.name(classOf[Worker], "executor", "number"), 
+    new Gauge[Int] {
       override def getValue: Int = worker.executors.size
-    })
-    
-    gauges.put(className + ".core_used.number", new Gauge[Int]{
+  })
+  
+  // Gauge for cores used of this worker
+  metricRegistry.register(MetricRegistry.name(classOf[Worker], "core_used", "number"), 
+    new Gauge[Int] {
       override def getValue: Int = worker.coresUsed
-    })
-    
-    gauges.put(className + ".mem_used.MBytes", new Gauge[Int]{
+  })
+  
+  // Gauge for memory used of this worker
+  metricRegistry.register(MetricRegistry.name(classOf[Worker], "mem_used", "MBytes"), 
+    new Gauge[Int] {
       override def getValue: Int = worker.memoryUsed
-    })
-    
-    gauges.put(className + ".core_free.number", new Gauge[Int]{
+  })
+  
+  // Gauge for cores free of this worker
+  metricRegistry.register(MetricRegistry.name(classOf[Worker], "core_free", "number"), 
+    new Gauge[Int] {
       override def getValue: Int = worker.coresFree
-    })
-    
-    gauges.put(className + ".mem_free.MBytes", new Gauge[Int]{
+  })
+  
+  // Gauge for memory used of this worker
+  metricRegistry.register(MetricRegistry.name(classOf[Worker], "mem_free", "MBytes"), 
+    new Gauge[Int] {
       override def getValue: Int = worker.memoryFree
     })
-    
-    gauges
-  }
 }
-//private[spark] trait WorkerInstrumentation extends AbstractInstrumentation {
-//  var workerInst: Option[Worker] = None
-//  val metricRegistry = new MetricRegistry()
-//  
-//  override def registryHandler = metricRegistry
-//  
-//  override def instance = "worker"
-//  
-//  def initialize(worker: Worker) {
-//    workerInst = Some(worker)
-//
-//    registerSources()
-//    registerSinks()
-//  }
-//  
-//  def uninitialize() {
-//    unregisterSinks()
-//  }
-//  
-//  // Gauge for executors number
-//  metricRegistry.register(MetricRegistry.name(classOf[Worker], "executor", "number"), 
-//    new Gauge[Int] {
-//      override def getValue: Int = workerInst.map(_.executors.size).getOrElse(0)
-//  })
-//  
-//  // Gauge for cores used of this worker
-//  metricRegistry.register(MetricRegistry.name(classOf[Worker], "core_used", "number"), 
-//    new Gauge[Int] {
-//      override def getValue: Int = workerInst.map(_.coresUsed).getOrElse(0)
-//  })
-//  
-//  // Gauge for memory used of this worker
-//  metricRegistry.register(MetricRegistry.name(classOf[Worker], "mem_used", "MBytes"), 
-//    new Gauge[Int] {
-//      override def getValue: Int = workerInst.map(_.memoryUsed).getOrElse(0)
-//  })
-//  
-//  // Gauge for cores free of this worker
-//  metricRegistry.register(MetricRegistry.name(classOf[Worker], "core_free", "number"), 
-//    new Gauge[Int] {
-//      override def getValue: Int = workerInst.map(_.coresFree).getOrElse(0)
-//  })
-//  
-//  // Gauge for memory used of this worker
-//  metricRegistry.register(MetricRegistry.name(classOf[Worker], "mem_free", "MBytes"), 
-//    new Gauge[Int] {
-//      override def getValue: Int = workerInst.map(_.memoryFree).getOrElse(0)
-//  })
-//}
\ No newline at end of file

core/src/main/scala/spark/metrics/MetricsSystem.scala

@@ -5,6 +5,7 @@ import scala.collection.mutable
 import com.codahale.metrics.{JmxReporter, MetricSet, MetricRegistry}
 
 import java.util.Properties
+//import java.util._
 import java.util.concurrent.TimeUnit
 
 import spark.Logging
@@ -19,10 +20,13 @@ private[spark] class MetricsSystem private (val instance: String) extends Loggin
   
   val sinks = new mutable.ArrayBuffer[Sink]
   val sources = new mutable.ArrayBuffer[Source]
+  var registry = new MetricRegistry()
+  
+  registerSources()
+  registerSinks()
   
   def start() {
-    registerSources()
-    registerSinks()
+    sinks.foreach(_.start)
   }
    
   def stop() {
@@ -31,20 +35,20 @@ private[spark] class MetricsSystem private (val instance: String) extends Loggin
   
   def registerSource(source: Source) {
     sources += source
-    MetricsSystem.registry.registerAll(source.asInstanceOf[MetricSet])
+    registry.register(source.sourceName,source.metricRegistry)
   }
   
   def registerSources() {
     val instConfig = metricsConfig.getInstance(instance)
     val sourceConfigs = MetricsConfig.subProperties(instConfig, MetricsSystem.SOURCE_REGEX)
-    
+ 
     // Register all the sources related to instance
     sourceConfigs.foreach { kv =>
       val classPath = kv._2.getProperty("class")
       try {
         val source = Class.forName(classPath).newInstance()
         sources += source.asInstanceOf[Source]
-        MetricsSystem.registry.registerAll(source.asInstanceOf[MetricSet])
+        registerSource(source.asInstanceOf[Source])
       } catch {
         case e: Exception => logError("source class " + classPath + " cannot be instantialized", e)
       }
@@ -56,7 +60,7 @@ private[spark] class MetricsSystem private (val instance: String) extends Loggin
     val sinkConfigs = MetricsConfig.subProperties(instConfig, MetricsSystem.SINK_REGEX)
     
     // Register JMX sink as a default sink
-    sinks += new JmxSink(MetricsSystem.registry)
+    sinks += new JmxSink(registry)
     
     // Register other sinks according to conf
     sinkConfigs.foreach { kv =>
@@ -68,19 +72,16 @@ private[spark] class MetricsSystem private (val instance: String) extends Loggin
       }
       try {
         val sink = Class.forName(classPath).getConstructor(classOf[Properties], classOf[MetricRegistry])
-          .newInstance(kv._2, MetricsSystem.registry)
+          .newInstance(kv._2, registry)
         sinks += sink.asInstanceOf[Sink]
       } catch {
         case e: Exception => logError("sink class " + classPath + " cannot be instantialized", e)
       }
     }
-    sinks.foreach(_.start)
   }
 }
 
 private[spark] object MetricsSystem {
-  val registry = new MetricRegistry()
-  
   val DEFAULT_SINKS = Map(
       "console" -> "spark.metrics.sink.ConsoleSink",
       "csv" -> "spark.metrics.sink.CsvSink")
@@ -96,4 +97,4 @@ private[spark] object MetricsSystem {
       "day" -> TimeUnit.DAYS)
       
    def createMetricsSystem(instance: String) = new MetricsSystem(instance)
-}
\ No newline at end of file
+}

core/src/main/scala/spark/metrics/sink/ConsoleSink.scala

@@ -18,14 +18,13 @@ class ConsoleSink(val property: Properties, val registry: MetricRegistry) extend
     case None => MetricsSystem.timeUnits(ConsoleSink.CONSOLE_DEFAULT_UNIT)
   }
   
-  var reporter: ConsoleReporter = _
-  
-  override def start() {
-    reporter = ConsoleReporter.forRegistry(registry)
+  var reporter: ConsoleReporter = ConsoleReporter.forRegistry(registry)
       .convertDurationsTo(TimeUnit.MILLISECONDS)
       .convertRatesTo(TimeUnit.SECONDS)
       .build()
-      
+
+  
+  override def start() {
     reporter.start(pollPeriod, pollUnit)  
   }
   
@@ -40,4 +39,4 @@ object ConsoleSink {
     
   val CONSOLE_KEY_PERIOD = "period"
   val CONSOLE_KEY_UNIT = "unit"
-}
\ No newline at end of file
+}

core/src/main/scala/spark/metrics/sink/CsvSink.scala

@@ -24,15 +24,14 @@ class CsvSink(val property: Properties, val registry: MetricRegistry) extends Si
     case None => CsvSink.CSV_DEFAULT_DIR
   }
   
-  var reporter: CsvReporter = _
-  
-  override def start() {
-    reporter = CsvReporter.forRegistry(registry)
+  var reporter: CsvReporter = CsvReporter.forRegistry(registry)
       .formatFor(Locale.US)
       .convertDurationsTo(TimeUnit.MILLISECONDS)
       .convertRatesTo(TimeUnit.SECONDS)
       .build(new File(pollDir))
-      
+
+  
+  override def start() {
     reporter.start(pollPeriod, pollUnit)  
   }
   

core/src/main/scala/spark/metrics/sink/JmxSink.scala

@@ -3,10 +3,9 @@ package spark.metrics.sink
 import com.codahale.metrics.{JmxReporter, MetricRegistry}
 
 class JmxSink(registry: MetricRegistry) extends Sink {
-  var reporter: JmxReporter = _
+  var reporter: JmxReporter = JmxReporter.forRegistry(registry).build()
   
   override def start() {
-    reporter = JmxReporter.forRegistry(registry).build()
     reporter.start()
   }
   
@@ -14,4 +13,4 @@ class JmxSink(registry: MetricRegistry) extends Sink {
     reporter.stop()
   }
   
-}
\ No newline at end of file
+}

core/src/main/scala/spark/metrics/source/JvmSource.scala

@@ -2,22 +2,16 @@ package spark.metrics.source
 
 import java.util.{Map, HashMap => JHashMap}
 
-import com.codahale.metrics.Metric
+import com.codahale.metrics.MetricRegistry
 import com.codahale.metrics.jvm.{GarbageCollectorMetricSet, MemoryUsageGaugeSet}
 
 class JvmSource extends Source {
-  override def sourceName = "jvm"
-    
-  override def getMetrics(): Map[String, Metric] = {
-    val gauges = new JHashMap[String, Metric]
-    
-    import scala.collection.JavaConversions._
+  val sourceName = "jvm"
+  val metricRegistry = new MetricRegistry()
+  
     val gcMetricSet = new GarbageCollectorMetricSet
-    gcMetricSet.getMetrics.foreach(kv => gauges.put(kv._1, kv._2))
-    
     val memGaugeSet = new MemoryUsageGaugeSet
-    memGaugeSet.getMetrics.foreach(kv => gauges.put(kv._1, kv._2))
-    		
-    gauges
-  }
-}
\ No newline at end of file
+    
+    metricRegistry.registerAll(gcMetricSet)
+    metricRegistry.registerAll(memGaugeSet)
+}

core/src/main/scala/spark/metrics/source/Source.scala

 package spark.metrics.source
 
 import com.codahale.metrics.MetricSet
+import com.codahale.metrics.MetricRegistry
 
-trait Source extends MetricSet {
+trait Source {
   def sourceName: String
-}
\ No newline at end of file
+  def metricRegistry: MetricRegistry 
+}