async public Task handleRequest(HttpContext httpContext)
{
if (Introspection && httpContext.Request.Path == "/ast.json" && httpContext.Request.Method.ToUpperInvariant() == "GET")
{
await httpContext.Response.WriteAsync(Api.GetAstJson());
return;
}
Context? context = null;
JsonDocument?bodyDocument = null;
var stopWatch = new Stopwatch();
stopWatch.Start();
try
{
StringValues origin;
if (DynamicCorsOrigin && httpContext.Request.Headers.TryGetValue("origin", out origin))
{
httpContext.Response.Headers.Add("Access-Control-Allow-Origin", origin);
httpContext.Response.Headers.Add("Vary", "Origin");
}
string method = httpContext.Request.Method.ToUpperInvariant();
foreach (var header in Headers)
{
if (method == "OPTIONS" && !header.Key.ToLowerInvariant().StartsWith("access-control-"))
{
continue;
}
httpContext.Response.Headers.Add(header.Key, header.Value);
}
if (method == "OPTIONS")
{
return;
}
httpContext.Response.Headers.Add("Content-Type", "application/json; charset=utf-8");
if (method == "HEAD")
{
return;
}
if (method == "GET")
{
if (httpContext.Request.Path.Value != "/")
{
httpContext.Response.StatusCode = 404;
return;
}
var ok = false;
try
{
ok = await OnHealthCheck();
}
catch (Exception)
{
}
httpContext.Response.StatusCode = ok ? 200 : 500;
await httpContext.Response.WriteAsync(ok? "{\"ok\":true}" : "{\"ok\":false}");
return;
}
if (method != "POST")
{
httpContext.Response.StatusCode = 404;
return;
}
bodyDocument = await JsonDocument.ParseAsync(httpContext.Request.Body);
context = ContextParser.DecodeContext(bodyDocument.RootElement, "body");
context.Headers = httpContext.Request.Headers;
// TODO: X-Forwarded-For with trusted proxies
context.Ip = httpContext.Connection.RemoteIpAddress.ToString();
var duration = stopWatch.Elapsed.TotalSeconds;
var bufferWriter = new ArrayBufferWriter <byte>();
using (var resultWriter = new Utf8JsonWriter(bufferWriter))
{
resultWriter.WriteStartObject();
resultWriter.WritePropertyName("result");
await Api.ExecuteFunction(context, resultWriter);
resultWriter.WriteNull("error");
resultWriter.WriteNumber("duration", duration);
resultWriter.WriteString("host", Dns.GetHostName());
resultWriter.WriteEndObject();
}
Console.WriteLine($"{context.Id} [{duration.ToString("0.000000")}s] {context.Name}() -> OK");
await httpContext.Response.WriteAsync(Encoding.UTF8.GetString(bufferWriter.WrittenSpan));
}
catch (Exception error)
{
Console.WriteLine(error.ToString());
SdkgenException sdkgenError;
if (error is SdkgenException)
{
sdkgenError = (error as SdkgenException) !;
}
else
{
sdkgenError = new SdkgenException("Fatal", error.Message, error);
}
var duration = stopWatch.Elapsed.TotalSeconds;
if (OnRequestError != null && context != null)
{
OnRequestError.Invoke(context, sdkgenError);
Console.WriteLine($"{context.Id} [{duration.ToString("0.000000")}s] {context.Name}() -> {sdkgenError.Type}");
}
httpContext.Response.StatusCode = sdkgenError.Type == "Fatal" ? 500 : 400;
using (var resultWriter = new Utf8JsonWriter(httpContext.Response.Body))
{
resultWriter.WriteStartObject();
resultWriter.WriteNull("result");
resultWriter.WriteStartObject("error");
resultWriter.WriteString("type", sdkgenError.Type);
resultWriter.WriteString("message", sdkgenError.Message);
resultWriter.WriteEndObject();
resultWriter.WriteNumber("duration", duration);
resultWriter.WriteString("host", Dns.GetHostName());
resultWriter.WriteEndObject();
}
}
finally
{
bodyDocument?.Dispose();
}
}
