Github user tdas commented on a diff in the pull request: https://github.com/apache/spark/pull/3947#discussion_r22707543 --- Diff: examples/src/main/scala/org/apache/spark/examples/streaming/MQTTWordCount.scala --- @@ -42,25 +41,34 @@ object MQTTPublisher { StreamingExamples.setStreamingLogLevels() val Seq(brokerUrl, topic) = args.toSeq + val tempDir = Utils.createTempDir() + + var client: MqttClient = null try { - var peristance:MqttClientPersistence =new MqttDefaultFilePersistence("/tmp") + val peristance:MqttClientPersistence = new MqttDefaultFilePersistence(tempDir.getAbsolutePath) client = new MqttClient(brokerUrl, MqttClient.generateClientId(), peristance) - } catch { - case e: MqttException => println("Exception Caught: " + e) - } - client.connect() + client.connect() + + val msgtopic: MqttTopic = client.getTopic(topic) + val msgContent: String = "hello mqtt demo for spark streaming" + val message: MqttMessage = new MqttMessage(msgContent.getBytes("utf-8")) - val msgtopic: MqttTopic = client.getTopic(topic) - val msg: String = "hello mqtt demo for spark streaming" + while (true) { + msgtopic.publish(message) + println("Published data. topic: " + msgtopic.getName() + " Message: " + message) + } + } + --- End diff -- ``` } catch { case e: } ```
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