public void TestStreamingContext()
{
var ssc = new StreamingContext(new SparkContext("", ""), 1);
Assert.IsNotNull((ssc.streamingContextProxy as MockStreamingContextProxy));
ssc.Start();
ssc.Remember(1);
ssc.Checkpoint(Path.GetTempPath());
var textFile = ssc.TextFileStream(Path.GetTempPath());
Assert.IsNotNull(textFile.DStreamProxy);
var socketStream = ssc.SocketTextStream(IPAddress.Loopback.ToString(), 12345);
Assert.IsNotNull(socketStream.DStreamProxy);
var kafkaStream = KafkaUtils.CreateStream(ssc, IPAddress.Loopback + ":2181", "testGroupId", new Dictionary<string, int> { { "testTopic1", 1 } }, new Dictionary<string, string>());
Assert.IsNotNull(kafkaStream.DStreamProxy);
var directKafkaStream = KafkaUtils.CreateDirectStream(ssc, new List<string> { "testTopic2" }, new Dictionary<string, string>(), new Dictionary<string, long>());
Assert.IsNotNull(directKafkaStream.DStreamProxy);
var directKafkaStreamWithRepartition = KafkaUtils.CreateDirectStreamWithRepartition(ssc, new List<string> { "testTopic3" }, new Dictionary<string, string>(), new Dictionary<string, long>(), 10);
Assert.IsNotNull(directKafkaStreamWithRepartition.DStreamProxy);
var union = ssc.Union(textFile, socketStream);
Assert.IsNotNull(union.DStreamProxy);
ssc.AwaitTermination();
ssc.Stop();
}
private static void StartFileServer(StreamingContext ssc, string directory, string pattern, int loops = 1)
{
string testDir = Path.Combine(directory, "test");
if (!Directory.Exists(testDir))
Directory.CreateDirectory(testDir);
stopFileServer = false;
string[] files = Directory.GetFiles(directory, pattern);
Task.Run(() =>
{
int loop = 0;
while (!stopFileServer)
{
if (loop++ < loops)
{
DateTime now = DateTime.Now;
foreach (string path in files)
{
string text = File.ReadAllText(path);
File.WriteAllText(testDir + "\\" + now.ToBinary() + "_" + Path.GetFileName(path), text);
}
}
System.Threading.Thread.Sleep(200);
}
ssc.Stop();
});
System.Threading.Thread.Sleep(1);
}
public void TestStreamingContext()
{
var ssc = new StreamingContext(new SparkContext("", ""), 1000);
Assert.IsNotNull((ssc.streamingContextProxy as MockStreamingContextProxy));
ssc.Start();
ssc.Remember(1000);
ssc.Checkpoint(Path.GetTempPath());
var textFile = ssc.TextFileStream(Path.GetTempPath());
Assert.IsNotNull(textFile.DStreamProxy);
var socketStream = ssc.SocketTextStream("127.0.0.1", 12345);
Assert.IsNotNull(socketStream.DStreamProxy);
var kafkaStream = ssc.KafkaStream("127.0.0.1:2181", "testGroupId", new Dictionary<string, int> { { "testTopic1", 1 } }, new Dictionary<string, string>());
Assert.IsNotNull(kafkaStream.DStreamProxy);
var directKafkaStream = ssc.DirectKafkaStream(new List<string> { "testTopic2" }, new Dictionary<string, string>(), new Dictionary<string, long>());
Assert.IsNotNull(directKafkaStream.DStreamProxy);
var union = ssc.Union(textFile, socketStream);
Assert.IsNotNull(union.DStreamProxy);
ssc.AwaitTermination();
ssc.Stop();
}
internal static void DStreamTextFileSamples()
{
SparkContext sc = SparkCLRSamples.SparkContext;
string directory = SparkCLRSamples.Configuration.SampleDataLocation;
sc.SetCheckpointDir(directory);
StreamingContext ssc = new StreamingContext(sc, 2000);
var lines = ssc.TextFileStream(Path.Combine(directory, "test"));
var words = lines.FlatMap(l => l.Split(' '));
var pairs = words.Map(w => new KeyValuePair<string, int>(w, 1));
var wordCounts = pairs.ReduceByKey((x, y) => x + y);
var join = wordCounts.Join(wordCounts, 2);
var state = join.UpdateStateByKey<string, Tuple<int, int>, int>((vs, s) => vs.Sum(x => x.Item1 + x.Item2) + s);
state.ForeachRDD((time, rdd) =>
{
// there's chance rdd.Take conflicts with ssc.Stop
if (stopFileServer)
return;
object[] taken = rdd.Take(10);
Console.WriteLine("-------------------------------------------");
Console.WriteLine("Time: {0}", time);
Console.WriteLine("-------------------------------------------");
foreach (object record in taken)
{
Console.WriteLine(record);
}
Console.WriteLine();
stopFileServer = count++ > 3;
});
ssc.Start();
StartFileServer(directory, "words.txt", 100);
while (!stopFileServer)
{
System.Threading.Thread.Sleep(1000);
}
// wait ForeachRDD to complete to let ssc.Stop() gracefully
System.Threading.Thread.Sleep(2000);
ssc.Stop();
}
public void TestStreamingAwaitTimeout()
{
var ssc = new StreamingContext(new SparkContext("", ""), 1000L);
Assert.IsNotNull((ssc.streamingContextProxy as MockStreamingContextProxy));
ssc.Start();
ssc.Remember(1000L);
ssc.Checkpoint(Path.GetTempPath());
var textFile = ssc.TextFileStream(Path.GetTempPath());
Assert.IsNotNull(textFile.DStreamProxy);
var socketStream = ssc.SocketTextStream(IPAddress.Loopback.ToString(), 12345);
Assert.IsNotNull(socketStream.DStreamProxy);
var union = ssc.Union(textFile, socketStream);
Assert.IsNotNull(union.DStreamProxy);
ssc.AwaitTerminationOrTimeout(3000);
ssc.Stop();
}
public void TestStreamingContext()
{
var ssc = new StreamingContext(new SparkContext("", ""), 1000L);
Assert.IsNotNull((ssc.streamingContextProxy as MockStreamingContextProxy));
ssc.Start();
ssc.Remember(1000L);
ssc.Checkpoint(Path.GetTempPath());
var textFile = ssc.TextFileStream(Path.GetTempPath());
Assert.IsNotNull(textFile.DStreamProxy);
var socketStream = ssc.SocketTextStream(IPAddress.Loopback.ToString(), 12345);
Assert.IsNotNull(socketStream.DStreamProxy);
var kafkaStream = KafkaUtils.CreateStream(ssc, IPAddress.Loopback + ":2181", "testGroupId", new Dictionary<string, int> { { "testTopic1", 1 } }, new Dictionary<string, string>());
Assert.IsNotNull(kafkaStream.DStreamProxy);
var directKafkaStream = KafkaUtils.CreateDirectStream(ssc, new List<string> { "testTopic2" }, new Dictionary<string, string>(), new Dictionary<string, long>());
Assert.IsNotNull(directKafkaStream.DStreamProxy);
ssc.SparkContext.SparkConf.Set("spark.mobius.streaming.kafka.numPartitions.testTopic3", "10");
var directKafkaStreamWithRepartition = KafkaUtils.CreateDirectStream(ssc, new List<string> { "testTopic3" }, new Dictionary<string, string>(), new Dictionary<string, long>());
Assert.IsNotNull(directKafkaStreamWithRepartition.DStreamProxy);
var directKafkaStreamWithRepartitionAndReadFunc = KafkaUtils.CreateDirectStream(
ssc,
new List<string> { "testTopic3" },
new Dictionary<string, string>(), new Dictionary<string, long>(),
(int pid, IEnumerable<KeyValuePair<byte[], byte[]>> input) => { return input; });
Assert.IsNotNull(directKafkaStreamWithRepartitionAndReadFunc);
ssc.SparkContext.SparkConf.Set("spark.mobius.streaming.kafka.numReceivers", "10");
var directKafkaReceiver = KafkaUtils.CreateDirectStream(
ssc,
new List<string> { "testTopic3" },
new Dictionary<string, string>(), new Dictionary<string, long>(),
(int pid, IEnumerable<KeyValuePair<byte[], byte[]>> input) => { return input; });
Assert.IsNotNull(directKafkaReceiver.DStreamProxy);
var union = ssc.Union(textFile, socketStream);
Assert.IsNotNull(union.DStreamProxy);
ssc.AwaitTermination();
ssc.Stop();
}
