add DRPC demo.

samples/Storm.DRPC.Demo/Program.cs

@@ -1,13 +1,24 @@
 using Storm.DRPC;
+using System;
 
 namespace Storm.DRPC.Demo
 {
     class Program
     {
         static void Main(string[] args)
         {
-            DRPCClient client = new DRPCClient("drpc-host", 3772);
+            DRPCClient client = new DRPCClient("localhost", 3772);
             string result = client.execute("exclamation", "hello word");
+            Console.WriteLine(result);
+            Console.WriteLine("Please input a word and press enter, if you want quit it, press enter only!");
+            do {
+                string input = Console.ReadLine();
+                if (string.IsNullOrEmpty(input))
+                    break;
+
+                Console.WriteLine(client.execute("exclamation", input));
+            }
+            while (true);
         }
     }
 }

storm-starter/src/jvm/storm/starter/BasicDRPCTopology.java

@@ -0,0 +1,78 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package storm.starter;
+
+import backtype.storm.Config;
+import backtype.storm.LocalCluster;
+import backtype.storm.LocalDRPC;
+import backtype.storm.StormSubmitter;
+import backtype.storm.drpc.LinearDRPCTopologyBuilder;
+import backtype.storm.topology.BasicOutputCollector;
+import backtype.storm.topology.OutputFieldsDeclarer;
+import backtype.storm.topology.base.BaseBasicBolt;
+import backtype.storm.tuple.Fields;
+import backtype.storm.tuple.Tuple;
+import backtype.storm.tuple.Values;
+
+/**
+ * This topology is a basic example of doing distributed RPC on top of Storm. It implements a function that appends a
+ * "!" to any string you send the DRPC function.
+ * <p/>
+ * See https://github.com/nathanmarz/storm/wiki/Distributed-RPC for more information on doing distributed RPC on top of
+ * Storm.
+ */
+public class BasicDRPCTopology {
+  public static class ExclaimBolt extends BaseBasicBolt {
+    @Override
+    public void execute(Tuple tuple, BasicOutputCollector collector) {
+      String input = tuple.getString(1);
+      collector.emit(new Values(tuple.getValue(0), input + "!"));
+    }
+
+    @Override
+    public void declareOutputFields(OutputFieldsDeclarer declarer) {
+      declarer.declare(new Fields("id", "result"));
+    }
+
+  }
+
+  public static void main(String[] args) throws Exception {
+    LinearDRPCTopologyBuilder builder = new LinearDRPCTopologyBuilder("exclamation");
+    builder.addBolt(new ExclaimBolt(), 3);
+
+    Config conf = new Config();
+
+    if (args == null || args.length == 0) {
+      LocalDRPC drpc = new LocalDRPC();
+      LocalCluster cluster = new LocalCluster();
+
+      cluster.submitTopology("drpc-demo", conf, builder.createLocalTopology(drpc));
+
+      for (String word : new String[]{ "hello", "goodbye" }) {
+        System.out.println("Result for \"" + word + "\": " + drpc.execute("exclamation", word));
+      }
+
+      cluster.shutdown();
+      drpc.shutdown();
+    }
+    else {
+      conf.setNumWorkers(3);
+      StormSubmitter.submitTopologyWithProgressBar(args[0], conf, builder.createRemoteTopology());
+    }
+  }
+}