public OutOfProcessNodeInstance(string entryPointScript, string projectPath, string commandLineArguments = null)
{
this._childProcessLauncherLock = new object();
this._entryPointScript = new StringAsTempFile(entryPointScript);
this._projectPath = projectPath;
this._commandLineArguments = commandLineArguments ?? string.Empty;
}
public async Task<string> GetResult(RequestInfo RequestInfo, int EndpointId, string ResponseContent) {
//string fileContent = "module.exports = function (cb, req) { cb(null, JSON.stringify({some:'obj'}));};";
string fileContent = "module.exports = " + ResponseContent + ";";
using (StringAsTempFile temp = new Microsoft.AspNet.NodeServices.StringAsTempFile(fileContent)) {
try {
return await this.nodeServices.Invoke<string>(temp.FileName, RequestInfo);
} catch (Exception ex) {
return ex.ToString();
}
}
}
static INodeServices fallbackNodeServices; // Used only if no INodeServices was registered with DI
public static void UseWebpackDevMiddleware(this IApplicationBuilder appBuilder, WebpackDevMiddlewareOptions options = null) {
// Validate options
if (options != null) {
if (options.ReactHotModuleReplacement && !options.HotModuleReplacement) {
throw new ArgumentException("To enable ReactHotModuleReplacement, you must also enable HotModuleReplacement.");
}
}
// Get the NodeServices instance from DI
var nodeServices = (INodeServices)appBuilder.ApplicationServices.GetService(typeof (INodeServices)) ?? fallbackNodeServices;
// Consider removing the following. Having it means you can get away with not putting app.AddNodeServices()
// in your startup file, but then again it might be confusing that you don't need to.
var appEnv = (IApplicationEnvironment)appBuilder.ApplicationServices.GetService(typeof(IApplicationEnvironment));
if (nodeServices == null) {
nodeServices = fallbackNodeServices = Configuration.CreateNodeServices(NodeHostingModel.Http, appEnv.ApplicationBasePath);
}
// Get a filename matching the middleware Node script
var script = EmbeddedResourceReader.Read(typeof (WebpackDevMiddleware), "/Content/Node/webpack-dev-middleware.js");
var nodeScript = new StringAsTempFile(script); // Will be cleaned up on process exit
// Tell Node to start the server hosting webpack-dev-middleware
var devServerOptions = new {
webpackConfigPath = Path.Combine(appEnv.ApplicationBasePath, "webpack.config.js"),
suppliedOptions = options ?? new WebpackDevMiddlewareOptions()
};
var devServerInfo = nodeServices.InvokeExport<WebpackDevServerInfo>(nodeScript.FileName, "createWebpackDevServer", JsonConvert.SerializeObject(devServerOptions)).Result;
// Proxy the corresponding requests through ASP.NET and into the Node listener
appBuilder.Map(devServerInfo.PublicPath, builder => {
builder.RunProxy(new ProxyOptions {
Host = WebpackDevMiddlewareHostname,
Port = devServerInfo.Port.ToString()
});
});
// While it would be nice to proxy the /__webpack_hmr requests too, these return an EventStream,
// and the Microsoft.Aspnet.Proxy code doesn't handle that entirely - it throws an exception after
// a while. So, just serve a 302 for those.
appBuilder.Map(WebpackHotMiddlewareEndpoint, builder => {
builder.Use(next => async ctx => {
ctx.Response.Redirect($"http://localhost:{ devServerInfo.Port.ToString() }{ WebpackHotMiddlewareEndpoint }");
await Task.Yield();
});
});
}
static ReactRenderer() {
// Consider populating this lazily
var script = EmbeddedResourceReader.Read(typeof (ReactRenderer), "/Content/Node/react-rendering.js");
nodeScript = new StringAsTempFile(script); // Will be cleaned up on process exit
}
public OutOfProcessNodeInstance(string entryPointScript, string commandLineArguments = null)
{
this._childProcessLauncherLock = new object();
this._entryPointScript = new StringAsTempFile(entryPointScript);
this._commandLineArguments = commandLineArguments ?? string.Empty;
}
