Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/4229#discussion_r34660546
--- Diff: python/pyspark/streaming/tests.py ---
@@ -827,6 +828,52 @@ def test_flume_polling_multiple_hosts(self):
self._testMultipleTimes(self._testFlumePollingMultipleHosts)
+class MQTTStreamTests(PySparkStreamingTestCase):
+ timeout = 20 # seconds
+ duration = 1
+
+ def setUp(self):
+ super(MQTTStreamTests, self).setUp()
+
+ MQTTTestUtilsClz =
self.ssc._jvm.java.lang.Thread.currentThread().getContextClassLoader() \
+ .loadClass("org.apache.spark.streaming.mqtt.MQTTTestUtils")
+ self._MQTTTestUtils = MQTTTestUtilsClz.newInstance()
+ self._MQTTTestUtils.setup()
+
+ def tearDown(self):
+ if self._MQTTTestUtils is not None:
+ self._MQTTTestUtils.teardown()
+ self._MQTTTestUtils = None
+
+ super(MQTTStreamTests, self).tearDown()
+
+ def _randomTopic(self):
+ return "topic-%d" % random.randint(0, 10000)
+
+ def _validateStreamResult(self, sendData, dstream):
+ result = []
+
+ def get_output(_, rdd):
+ for data in rdd.collect():
+ result.append(data)
+
+ dstream.foreachRDD(get_output)
+ receiveData = ' '.join(result[0])
+ self.assertEqual(sendData, receiveData)
+
+ def test_mqtt_stream(self):
+ """Test the Python MQTT stream API."""
+ topic = self._randomTopic()
+ sendData = "MQTT demo for spark streaming"
+ ssc = self.ssc
+
+ self._MQTTTestUtils.waitForReceiverToStart(ssc)
--- End diff --
You should send `ssc._jssc`, JavaStreamingContext to the Scala codes. `ssc`
is a Python object, which cannot be used in Scala.
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