private static async Task <AngularCliMiddleware.AngularCliServerInfo> StartAngularCliServerAsync(
string sourcePath,
ILogger logger)
{
logger.LogInformation("Starting @angular/cli ...");
NpmScriptRunner npmScriptRunner = new NpmScriptRunner(sourcePath, "start", (IDictionary <string, string>)null);
npmScriptRunner.AttachToLogger(logger);
Match match;
using (EventedStreamStringReader stdErrReader = new EventedStreamStringReader(npmScriptRunner.StdErr))
{
try
{
match = await npmScriptRunner.StdOut.WaitForMatch(new Regex("open your browser on (http\\S+)", RegexOptions.None, AngularCliMiddleware.RegexMatchTimeout));
}
catch (EndOfStreamException ex)
{
throw new InvalidOperationException("The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: " + stdErrReader.ReadAsString(), (Exception)ex);
}
}
Uri cliServerUri = new Uri(match.Groups[1].Value);
AngularCliMiddleware.AngularCliServerInfo serverInfo = new AngularCliMiddleware.AngularCliServerInfo()
{
Port = cliServerUri.Port
};
await AngularCliMiddleware.WaitForAngularCliServerToAcceptRequests(cliServerUri);
return(serverInfo);
}
public static void Attach(ISpaBuilder spaBuilder)
{
string sourcePath = spaBuilder.Options.SourcePath;
if (string.IsNullOrEmpty(sourcePath))
{
throw new ArgumentException("Cannot be null or empty", "sourcePath");
}
ILogger logger =
spaBuilder.ApplicationBuilder.ApplicationServices.GetService <ILogger <AngularCliServerInfo> >();
Task <Uri> targetUriTask = AngularCliMiddleware.StartAngularCliServerAsync(sourcePath, logger).ContinueWith <Uri>((Func <Task <AngularCliMiddleware.AngularCliServerInfo>, Uri>)(task => new UriBuilder("http", "localhost", task.Result.Port).Uri));
spaBuilder.UseProxyToSpaDevelopmentServer((Func <Task <Uri> >)(() =>
{
TimeSpan startupTimeout = spaBuilder.Options.StartupTimeout;
return(targetUriTask.WithTimeout <Uri>(startupTimeout, "The Angular CLI process did not start listening for requests " + string.Format("within the timeout period of {0} seconds. ", (object)startupTimeout.Seconds) + "Check the log output for error information."));
}));
}