From 22deb2ad28c02fdb0a4a13a8851957cb9d236800 Mon Sep 17 00:00:00 2001
From: SteveSandersonMS <stevesa@microsoft.com>
Date: Wed, 18 May 2016 11:51:47 +0100
Subject: [PATCH] Add LatencyTest project

---
 samples/misc/LatencyTest/Program.cs           | 46 +++++++++++++++++++
 samples/misc/LatencyTest/latencyTest.js       |  4 ++
 samples/misc/LatencyTest/project.json         | 18 ++++++++
 .../project.json                              |  1 +
 4 files changed, 69 insertions(+)
 create mode 100755 samples/misc/LatencyTest/Program.cs
 create mode 100644 samples/misc/LatencyTest/latencyTest.js
 create mode 100755 samples/misc/LatencyTest/project.json

diff --git a/samples/misc/LatencyTest/Program.cs b/samples/misc/LatencyTest/Program.cs
new file mode 100755
index 0000000..8654e2c
--- /dev/null
+++ b/samples/misc/LatencyTest/Program.cs
@@ -0,0 +1,46 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.NodeServices;
+
+namespace ConsoleApplication
+{
+    // This project is a micro-benchmark for .NET->Node RPC via NodeServices. It doesn't reflect
+    // real-world usage patterns (you're not likely to make hundreds of sequential calls like this),
+    // but is a starting point for comparing the overhead of different hosting models and transports. 
+    public class Program
+    {
+        public static void Main(string[] args) {
+            using (var nodeServices = CreateNodeServices(NodeHostingModel.Http)) {                
+                MeasureLatency(nodeServices).Wait();
+            }
+        }
+
+        private static async Task MeasureLatency(INodeServices nodeServices) {
+            // Ensure the connection is open, so we can measure per-request timings below
+            var response = await nodeServices.Invoke<string>("latencyTest", "C#");
+            Console.WriteLine(response);
+            
+            // Now perform a series of requests, capturing the time taken
+            const int requestCount = 100;
+            var watch = Stopwatch.StartNew();
+            for (var i = 0; i < requestCount; i++) {
+                await nodeServices.Invoke<string>("latencyTest", "C#");
+            }
+
+            // Display results
+            var elapsedSeconds = (float)watch.ElapsedTicks / Stopwatch.Frequency;
+            Console.WriteLine("\nTotal time: {0:F2} milliseconds", 1000 * elapsedSeconds);
+            Console.WriteLine("\nTime per invocation: {0:F2} milliseconds", 1000 * elapsedSeconds / requestCount);
+        }
+
+        private static INodeServices CreateNodeServices(NodeHostingModel hostingModel) {
+            return Configuration.CreateNodeServices(new NodeServicesOptions {
+                HostingModel = hostingModel,
+                ProjectPath = Directory.GetCurrentDirectory(),
+                WatchFileExtensions = new string[] {} // Don't watch anything
+            });
+        }
+    }
+}
diff --git a/samples/misc/LatencyTest/latencyTest.js b/samples/misc/LatencyTest/latencyTest.js
new file mode 100644
index 0000000..9feb344
--- /dev/null
+++ b/samples/misc/LatencyTest/latencyTest.js
@@ -0,0 +1,4 @@
+module.exports = function(callback, incomingParam1) {
+    var result = 'Hello, ' + incomingParam1 + '!';
+    callback(/* error */ null, result);
+}
diff --git a/samples/misc/LatencyTest/project.json b/samples/misc/LatencyTest/project.json
new file mode 100755
index 0000000..780b662
--- /dev/null
+++ b/samples/misc/LatencyTest/project.json
@@ -0,0 +1,18 @@
+{
+  "version": "1.0.0-*",
+  "buildOptions": {
+    "emitEntryPoint": true
+  },
+  "dependencies": {
+    "Microsoft.NETCore.App": {
+      "version": "1.0.0-rc2-3002702",
+      "type": "platform"
+    },    
+    "Microsoft.AspNetCore.NodeServices": "1.0.0-*"
+  },
+  "frameworks": {
+    "netcoreapp1.0": {
+      "imports": "dnxcore50"
+    }
+  }
+}
diff --git a/src/Microsoft.AspNetCore.NodeServices/project.json b/src/Microsoft.AspNetCore.NodeServices/project.json
index 597a456..22a8074 100644
--- a/src/Microsoft.AspNetCore.NodeServices/project.json
+++ b/src/Microsoft.AspNetCore.NodeServices/project.json
@@ -6,6 +6,7 @@
   },
   "authors": [ "Microsoft" ],
   "dependencies": {
+    "Microsoft.Extensions.Configuration.Json": "1.0.0-*",
     "Microsoft.Extensions.DependencyInjection.Abstractions": "1.0.0-*",
     "Microsoft.Extensions.PlatformAbstractions": "1.0.0-*",
     "Microsoft.AspNetCore.Hosting.Abstractions": "1.0.0-*",