JSON object definitions

core/src/main/scala/spark/deploy/JsonProtocol.scala

+package spark.deploy
+
+import master.{JobInfo, WorkerInfo}
+import spray.json._
+
+/**
+ * spray-json helper class containing implicit conversion to json for marshalling responses
+ */
+private[spark] object JsonProtocol extends DefaultJsonProtocol {
+  import cc.spray.json._
+
+  implicit object WorkerInfoJsonFormat extends RootJsonWriter[WorkerInfo] {
+    def write(obj: WorkerInfo) = JsObject(
+      "id" -> JsString(obj.id),
+      "host" -> JsString(obj.host),
+      "webuiaddress" -> JsString(obj.webUiAddress),
+      "cores" -> JsNumber(obj.cores),
+      "coresused" -> JsNumber(obj.coresUsed),
+      "memory" -> JsNumber(obj.memory),
+      "memoryused" -> JsNumber(obj.memoryUsed)
+    )
+  }
+
+  implicit object JobInfoJsonFormat extends RootJsonWriter[JobInfo] {
+    def write(obj: JobInfo) = JsObject(
+      "starttime" -> JsNumber(obj.startTime),
+      "id" -> JsString(obj.id),
+      "name" -> JsString(obj.desc.name),
+      "cores" -> JsNumber(obj.desc.cores),
+      "user" -> JsString(obj.desc.user),
+      "memoryperslave" -> JsNumber(obj.desc.memoryPerSlave),
+      "submitdate" -> JsString(obj.submitDate.toString))
+  }
+
+  implicit object MasterStateJsonFormat extends RootJsonWriter[MasterState] {
+    def write(obj: MasterState) = JsObject(
+      "url" -> JsString("spark://" + obj.uri),
+      "workers" -> JsArray(obj.workers.toList.map(_.toJson)),
+      "cores" -> JsNumber(obj.workers.map(_.cores).sum),
+      "coresused" -> JsNumber(obj.workers.map(_.coresUsed).sum),
+      "memory" -> JsNumber(obj.workers.map(_.memory).sum),
+      "memoryused" -> JsNumber(obj.workers.map(_.memoryUsed).sum),
+      "activejobs" -> JsArray(obj.activeJobs.toList.map(_.toJson)),
+      "completedjobs" -> JsArray(obj.completedJobs.toList.map(_.toJson))
+    )
+  }
+
+  implicit object WorkerStateJsonFormat extends RootJsonWriter[WorkerState] {
+    def write(obj: WorkerState) = JsObject(
+      "id" -> JsString(obj.workerId),
+      "masterurl" -> JsString(obj.masterUrl),
+      "masterwebuiurl" -> JsString(obj.masterWebUiUrl),
+      "cores" -> JsNumber(obj.cores),
+      "coresused" -> JsNumber(obj.coresUsed),
+      "memory" -> JsNumber(obj.memory),
+      "memoryused" -> JsNumber(obj.memoryUsed)
+    )
+  }
+}