From 3461cd99b7b680be9c9dc263382b42f30c9edd7d Mon Sep 17 00:00:00 2001
From: Patrick Wendell <pwendell@gmail.com>
Date: Fri, 11 Jan 2013 12:05:04 -0800
Subject: Flume example and bug fix

---
 .../streaming/examples/JavaFlumeEventCount.java    | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 examples/src/main/scala/spark/streaming/examples/JavaFlumeEventCount.java

(limited to 'examples/src/main/scala')

diff --git a/examples/src/main/scala/spark/streaming/examples/JavaFlumeEventCount.java b/examples/src/main/scala/spark/streaming/examples/JavaFlumeEventCount.java
new file mode 100644
index 0000000000..6592d9bc2e
--- /dev/null
+++ b/examples/src/main/scala/spark/streaming/examples/JavaFlumeEventCount.java
@@ -0,0 +1,50 @@
+package spark.streaming.examples;
+
+import spark.api.java.function.Function;
+import spark.streaming.*;
+import spark.streaming.api.java.*;
+import spark.streaming.dstream.SparkFlumeEvent;
+
+/**
+ *  Produces a count of events received from Flume.
+ *
+ *  This should be used in conjunction with an AvroSink in Flume. It will start
+ *  an Avro server on at the request host:port address and listen for requests.
+ *  Your Flume AvroSink should be pointed to this address.
+ *
+ *  Usage: FlumeEventCount <master> <host> <port>
+ *
+ *    <master> is a Spark master URL
+ *    <host> is the host the Flume receiver will be started on - a receiver
+ *           creates a server and listens for flume events.
+ *    <port> is the port the Flume receiver will listen on.
+ */
+public class JavaFlumeEventCount {
+  public static void main(String[] args) {
+    if (args.length != 3) {
+      System.err.println("Usage: JavaFlumeEventCount <master> <host> <port>");
+      System.exit(1);
+    }
+
+    String master = args[0];
+    String host = args[1];
+    int port = Integer.parseInt(args[2]);
+
+    Duration batchInterval = new Duration(2000);
+
+    JavaStreamingContext sc = new JavaStreamingContext(master, "FlumeEventCount", batchInterval);
+
+    JavaDStream<SparkFlumeEvent> flumeStream = sc.flumeStream("localhost", port);
+
+    flumeStream.count();
+
+    flumeStream.count().map(new Function<Integer, String>() {
+      @Override
+      public String call(Integer in) {
+        return "Received " + in + " flume events.";
+      }
+    }).print();
+
+    sc.start();
+  }
+}
-- 
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