Switch to using DI to acquire Node instances. Bump versions to alpha2.

Microsoft.AspNet.NodeServices.Angular/AngularPrerenderTagHelper.cs

@@ -20,8 +20,6 @@ namespace Microsoft.AspNet.NodeServices.Angular
         const string PrerenderModuleAttributeName = "aspnet-ng2-prerender-module";
         const string PrerenderExportAttributeName = "aspnet-ng2-prerender-export";
         
-        private static NodeInstance nodeInstance = new NodeInstance();
-
         [HtmlAttributeName(PrerenderModuleAttributeName)]
         public string ModuleName { get; set; }
         
@@ -29,15 +27,17 @@ namespace Microsoft.AspNet.NodeServices.Angular
         public string ExportName { get; set; }
 
         private IHttpContextAccessor contextAccessor;
+        private INodeServices nodeServices;
 
-        public AngularRunAtServerTagHelper(IHttpContextAccessor contextAccessor)
+        public AngularRunAtServerTagHelper(INodeServices nodeServices, IHttpContextAccessor contextAccessor)
         {
             this.contextAccessor = contextAccessor;
+            this.nodeServices = nodeServices;
         }
 
         public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
         {
-            var result = await nodeInstance.InvokeExport(nodeScript.FileName, "renderComponent", new {
+            var result = await this.nodeServices.InvokeExport(nodeScript.FileName, "renderComponent", new {
                 componentModule = this.ModuleName,
                 componentExport = this.ExportName,
                 tagName = output.TagName,

Microsoft.AspNet.NodeServices.Angular/project.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.0.0-alpha1",
+  "version": "1.0.0-alpha2",
   "description": "Microsoft.AspNet.NodeServices.Angular Class Library",
   "authors": [
     "Microsoft"
@@ -25,7 +25,7 @@
     }
   },
   "dependencies": {
-    "Microsoft.AspNet.NodeServices": "1.0.0-alpha1",
+    "Microsoft.AspNet.NodeServices": "1.0.0-alpha2",
     "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-beta8"
   },
   "resource": [

Microsoft.AspNet.NodeServices.React/ReactRenderer.cs

@@ -5,7 +5,6 @@ namespace Microsoft.AspNet.NodeServices.React
     public static class ReactRenderer
     {
         private static StringAsTempFile nodeScript;
-        private static NodeInstance nodeInstance = new NodeInstance();
         
         static ReactRenderer() {
             // Consider populating this lazily
@@ -13,8 +12,8 @@ namespace Microsoft.AspNet.NodeServices.React
             nodeScript = new StringAsTempFile(script); // Will be cleaned up on process exit
         }
         
-        public static async Task<string> RenderToString(string moduleName, string exportName, string baseUrl) {
-            return await nodeInstance.InvokeExport(nodeScript.FileName, "renderToString", new {
+        public static async Task<string> RenderToString(INodeServices nodeServices, string moduleName, string exportName, string baseUrl) {
+            return await nodeServices.InvokeExport(nodeScript.FileName, "renderToString", new {
                 moduleName,
                 exportName,
                 baseUrl

Microsoft.AspNet.NodeServices.React/project.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.0.0-alpha1",
+  "version": "1.0.0-alpha2",
   "description": "Microsoft.AspNet.NodeServices.React Class Library",
   "authors": [
     "Microsoft"
@@ -25,7 +25,7 @@
     }
   },
   "dependencies": {
-    "Microsoft.AspNet.NodeServices": "1.0.0-alpha1"
+    "Microsoft.AspNet.NodeServices": "1.0.0-alpha2"
   },
   "resource": [
     "Content/**/*"

Microsoft.AspNet.NodeServices/Configuration.cs

@@ -0,0 +1,24 @@
+using Microsoft.Framework.DependencyInjection;
+
+namespace Microsoft.AspNet.NodeServices {
+    public static class Configuration {
+        public static void AddNodeServices(this IServiceCollection serviceCollection, NodeHostingModel hostingModel = NodeHostingModel.Http) {
+            serviceCollection.AddSingleton(typeof(INodeServices), (serviceProvider) => {
+                return CreateNodeServices(hostingModel);
+            });
+        }
+
+        private static INodeServices CreateNodeServices(NodeHostingModel hostingModel)
+        {
+            switch (hostingModel)
+            {
+                case NodeHostingModel.Http:
+                    return new HttpNodeInstance();
+                case NodeHostingModel.InputOutputStream:
+                    return new InputOutputStreamNodeInstance();
+                default:
+                    throw new System.ArgumentException("Unknown hosting model: " + hostingModel.ToString());
+            }
+        }
+    }
+}

Microsoft.AspNet.NodeServices/HostingModels/HttpNodeInstance.cs

@@ -6,7 +6,7 @@ using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 
 namespace Microsoft.AspNet.NodeServices {
-	internal class HttpNodeHost : OutOfProcessNodeRunner {
+	internal class HttpNodeInstance : OutOfProcessNodeInstance {
         private readonly static Regex PortMessageRegex = new Regex(@"^\[Microsoft.AspNet.NodeServices.HttpNodeHost:Listening on port (\d+)\]$");
         
 		private readonly static JsonSerializerSettings jsonSerializerSettings =  new JsonSerializerSettings { 
@@ -15,8 +15,8 @@ namespace Microsoft.AspNet.NodeServices {
         
         private int _portNumber;
 		
-		public HttpNodeHost(int port = 0)
-            : base(EmbeddedResourceReader.Read(typeof(HttpNodeHost), "/Content/Node/entrypoint-http.js"), port.ToString())
+		public HttpNodeInstance(int port = 0)
+            : base(EmbeddedResourceReader.Read(typeof(HttpNodeInstance), "/Content/Node/entrypoint-http.js"), port.ToString())
         {
 		}
         

Microsoft.AspNet.NodeServices/HostingModels/InputOutputStreamNodeInstance.cs

@@ -15,7 +15,7 @@ namespace Microsoft.AspNet.NodeServices {
     // Instead of directly using stdin/stdout, we could use either regular sockets (TCP) or use named pipes
     // on Windows and domain sockets on Linux / OS X, but either way would need a system for framing the
     // requests, associating them with responses, and scheduling use of the comms channel.
-    internal class InputOutputStreamNodeHost : OutOfProcessNodeRunner
+    internal class InputOutputStreamNodeInstance : OutOfProcessNodeInstance
     {
         private SemaphoreSlim _invocationSemaphore = new SemaphoreSlim(1);
         private TaskCompletionSource<string> _currentInvocationResult;
@@ -24,8 +24,8 @@ namespace Microsoft.AspNet.NodeServices {
             ContractResolver = new CamelCasePropertyNamesContractResolver() 
         };
 		
-		public InputOutputStreamNodeHost()
-            : base(EmbeddedResourceReader.Read(typeof(InputOutputStreamNodeHost), "/Content/Node/entrypoint-stream.js"))
+		public InputOutputStreamNodeInstance()
+            : base(EmbeddedResourceReader.Read(typeof(InputOutputStreamNodeInstance), "/Content/Node/entrypoint-stream.js"))
         {
 		}
         

Microsoft.AspNet.NodeServices/HostingModels/NodeHost.cs

@@ -1,10 +0,0 @@
-using System.Threading.Tasks;
-
-namespace Microsoft.AspNet.NodeServices {
-    public abstract class NodeHost : System.IDisposable
-    {
-        public abstract Task<string> Invoke(NodeInvocationInfo invocationInfo);
-        
-        public abstract void Dispose();
-    }
-}

Microsoft.AspNet.NodeServices/HostingModels/OutOfProcessNodeInstance.cs

@@ -8,7 +8,7 @@ namespace Microsoft.AspNet.NodeServices {
      * Class responsible for launching the Node child process, determining when it is ready to accept invocations,
      * and finally killing it when the parent process exits. Also it restarts the child process if it dies.
      */
-    internal abstract class OutOfProcessNodeRunner : NodeHost {
+    public abstract class OutOfProcessNodeInstance : INodeServices {
         private object _childProcessLauncherLock;
         private bool disposed;
         private StringAsTempFile _entryPointScript;
@@ -18,19 +18,33 @@ namespace Microsoft.AspNet.NodeServices {
         
         protected Process NodeProcess {
             get {
-                // This is only exposed to support the UnreliableStreamNodeHost, which is just to verify that
+                // This is only exposed to support the unreliable OutOfProcessNodeRunner, which is just to verify that
                 // other hosting/transport mechanisms are possible. This shouldn't really be exposed.
                 return this._nodeProcess;
             }
         }
         
-        public OutOfProcessNodeRunner(string entryPointScript, string commandLineArguments = null)
+        public OutOfProcessNodeInstance(string entryPointScript, string commandLineArguments = null)
         {
             this._childProcessLauncherLock = new object();
             this._entryPointScript = new StringAsTempFile(entryPointScript);
             this._commandLineArguments = commandLineArguments ?? string.Empty;
         }
         
+        public abstract Task<string> Invoke(NodeInvocationInfo invocationInfo);
+        
+        public Task<string> Invoke(string moduleName, params object[] args) {
+            return this.InvokeExport(moduleName, null, args);
+        }
+    
+        public async Task<string> InvokeExport(string moduleName, string exportedFunctionName, params object[] args) {
+            return await this.Invoke(new NodeInvocationInfo {
+                ModuleName = moduleName,
+                ExportedFunctionName = exportedFunctionName,
+                Args = args
+            });
+        }
+        
         protected async Task EnsureReady() {
             lock (this._childProcessLauncherLock) {
                 if (this._nodeProcess == null || this._nodeProcess.HasExited) {
@@ -105,7 +119,7 @@ namespace Microsoft.AspNet.NodeServices {
             Console.WriteLine("[Node] " + errorData);
         }
 
-        public override void Dispose()
+        public void Dispose()
         {
             Dispose(true);
             GC.SuppressFinalize(this);
@@ -126,7 +140,7 @@ namespace Microsoft.AspNet.NodeServices {
             }
         }
 
-        ~OutOfProcessNodeRunner() {
+        ~OutOfProcessNodeInstance() {
             Dispose (false);
         }
     }

Microsoft.AspNet.NodeServices/INodeInstance.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Threading.Tasks;
+
+namespace Microsoft.AspNet.NodeServices {
+    public interface INodeServices : IDisposable {    
+        Task<string> Invoke(string moduleName, params object[] args);
+    
+        Task<string> InvokeExport(string moduleName, string exportedFunctionName, params object[] args);
+    }
+}

Microsoft.AspNet.NodeServices/NodeInstance.cs

@@ -1,38 +0,0 @@
-using System;
-using System.Threading.Tasks;
-
-namespace Microsoft.AspNet.NodeServices {
-    public class NodeInstance : IDisposable {
-        private readonly NodeHost _nodeHost;
-    
-        public NodeInstance(NodeHostingModel hostingModel = NodeHostingModel.Http) {
-            switch (hostingModel) {
-                case NodeHostingModel.Http:
-                    this._nodeHost = new HttpNodeHost();
-                    break;
-                case NodeHostingModel.InputOutputStream:
-                    this._nodeHost = new InputOutputStreamNodeHost();
-                    break;
-                default:
-                    throw new ArgumentException("Unknown hosting model: " + hostingModel.ToString());
-            }
-        }
-    
-        public Task<string> Invoke(string moduleName, params object[] args) {
-            return this.InvokeExport(moduleName, null, args);
-        }
-    
-        public async Task<string> InvokeExport(string moduleName, string exportedFunctionName, params object[] args) {
-            return await this._nodeHost.Invoke(new NodeInvocationInfo {
-                ModuleName = moduleName,
-                ExportedFunctionName = exportedFunctionName,
-                Args = args
-            });
-        }
-    
-        public void Dispose()
-        {
-            this._nodeHost.Dispose();
-        }
-    }
-}

Microsoft.AspNet.NodeServices/project.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.0.0-alpha1",
+  "version": "1.0.0-alpha2",
   "description": "Microsoft.AspNet.NodeServices",
   "authors": [ "Microsoft" ],
   "tags": [""],
@@ -8,7 +8,8 @@
 
   "dependencies": {
       "System.Net.Http": "4.0.1-beta-23409",
-      "Newtonsoft.Json": "8.0.1-beta1"
+      "Newtonsoft.Json": "8.0.1-beta1",
+      "Microsoft.Framework.DependencyInjection": "1.0.0-beta8"
   },
 
   "frameworks": {

samples/angular/MusicStore/Startup.cs

@@ -79,6 +79,9 @@ namespace MusicStore
             Mapper.CreateMap<ArtistResultDto, Artist>();
             Mapper.CreateMap<Genre, GenreResultDto>();
             Mapper.CreateMap<GenreResultDto, Genre>();
+            
+            // Enable Node Services
+            services.AddNodeServices();
         }
 
         // Configure is called after ConfigureServices is called.
@@ -108,17 +111,6 @@ namespace MusicStore
                 app.UseExceptionHandler("/Home/Error");
             }
             
-            var nodeInstance = new NodeInstance();
-            app.Use(async (context, next) => {
-                if (context.Request.Path.Value.EndsWith(".less")) {
-                    // Note: check for directory traversal
-                    var output = await nodeInstance.Invoke("lessCompiler.js", env.WebRootPath + context.Request.Path.Value);
-                    await context.Response.WriteAsync(output);
-                } else {
-                    await next();
-                }
-            });
-            
             // Add static files to the request pipeline.
             app.UseStaticFiles();
 

samples/angular/MusicStore/project.json

@@ -19,7 +19,7 @@
     "EntityFramework.SQLite": "7.0.0-beta8",
     "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-beta8",
     "AutoMapper": "4.0.0-alpha1",
-    "Microsoft.AspNet.NodeServices.Angular": "1.0.0-alpha1"
+    "Microsoft.AspNet.NodeServices.Angular": "1.0.0-alpha2"
   },
   "commands": {
     "web": "Microsoft.AspNet.Server.Kestrel"

samples/misc/ES2015Transpilation/Controllers/HomeController.cs

@@ -5,7 +5,7 @@ namespace ES2015Example.Controllers
 {
     public class HomeController : Controller
     {
-        public async Task<IActionResult> Index(int pageIndex)
+        public IActionResult Index(int pageIndex)
         {
             return View();
         }

samples/misc/ES2015Transpilation/Controllers/ScriptController.cs

@@ -6,13 +6,17 @@ namespace ES2015Example.Controllers
 {
     public class ScriptController : Controller
     {
-        private static NodeInstance nodeInstance = new NodeInstance(); 
+        private INodeServices nodeServices;
+        
+        public ScriptController(INodeServices nodeServices) {
+            this.nodeServices = nodeServices;
+        }
         
         public async Task<ContentResult> Transpile(string filename)
         {
             // TODO: Don't hard-code wwwroot; use proper path conversions
             var fileContents = System.IO.File.ReadAllText("wwwroot/" + filename);
-            var transpiledResult = await nodeInstance.Invoke("transpilation.js", fileContents, Request.Path.Value);
+            var transpiledResult = await this.nodeServices.Invoke("transpilation.js", fileContents, Request.Path.Value);
             return Content(transpiledResult, "application/javascript");
         }
     }

samples/misc/ES2015Transpilation/Startup.cs

@@ -5,6 +5,7 @@ using Microsoft.Dnx.Runtime;
 using Microsoft.Framework.Configuration;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Framework.Logging;
+using Microsoft.AspNet.NodeServices;
 
 namespace ES2015Example
 {
@@ -27,6 +28,9 @@ namespace ES2015Example
         {
             // Add MVC services to the services container.
             services.AddMvc();
+
+            // Enable Node Services
+            services.AddNodeServices();
         }
 
         // Configure is called after ConfigureServices is called.

samples/misc/ES2015Transpilation/project.json

@@ -16,7 +16,7 @@
     "Microsoft.Framework.Logging": "1.0.0-beta8",
     "Microsoft.Framework.Logging.Console": "1.0.0-beta8",
     "Microsoft.Framework.Logging.Debug": "1.0.0-beta8",
-    "Microsoft.AspNet.NodeServices": "1.0.0-alpha1"
+    "Microsoft.AspNet.NodeServices": "1.0.0-alpha2"
   },
   "commands": {
     "web": "Microsoft.AspNet.Server.Kestrel"

samples/react/ReactGrid/Controllers/HomeController.cs

@@ -1,14 +1,21 @@
 using System.Threading.Tasks;
 using Microsoft.AspNet.Mvc;
+using Microsoft.AspNet.NodeServices;
 using Microsoft.AspNet.NodeServices.React;
 
 namespace ReactExample.Controllers
 {
     public class HomeController : Controller
     {
+        private INodeServices nodeServices;
+
+        public HomeController(INodeServices nodeServices) {
+            this.nodeServices = nodeServices;
+        }
+        
         public async Task<IActionResult> Index(int pageIndex)
         {
-            ViewData["ReactOutput"] = await ReactRenderer.RenderToString(
+            ViewData["ReactOutput"] = await ReactRenderer.RenderToString(this.nodeServices,
                 moduleName: "ReactApp/components/ReactApp.jsx",
                 exportName: "ReactApp",
                 baseUrl: Request.Path

samples/react/ReactGrid/Startup.cs

@@ -1,5 +1,6 @@
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Hosting;
+using Microsoft.AspNet.NodeServices;
 using Microsoft.Dnx.Runtime;
 using Microsoft.Framework.Configuration;
 using Microsoft.Framework.DependencyInjection;
@@ -26,6 +27,9 @@ namespace ReactExample
         {
             // Add MVC services to the services container.
             services.AddMvc();
+            
+            // Enable Node Services
+            services.AddNodeServices();
         }
 
         // Configure is called after ConfigureServices is called.

samples/react/ReactGrid/project.json

@@ -16,7 +16,7 @@
     "Microsoft.Framework.Logging": "1.0.0-beta8",
     "Microsoft.Framework.Logging.Console": "1.0.0-beta8",
     "Microsoft.Framework.Logging.Debug": "1.0.0-beta8",
-    "Microsoft.AspNet.NodeServices.React": "1.0.0-alpha1"
+    "Microsoft.AspNet.NodeServices.React": "1.0.0-alpha2"
   },
   "commands": {
     "web": "Microsoft.AspNet.Server.Kestrel"