public static void ParseResponseBody(ManticoreEngine engine, ObjectInstance response, String format, Stream byteStream)
{
if ("json".Equals(format, StringComparison.OrdinalIgnoreCase))
{
String json = new StreamReader(byteStream, Encoding.UTF8).ReadToEnd();
if (json != null && json.Length > 0)
{
JsValue jsObject = engine.jsEngine.Json.Parse(JsValue.Null, new JsValue[] { json });
response.FastAddProperty("body", jsObject, false, true, false);
}
}
else if (!"binary".Equals(format, StringComparison.OrdinalIgnoreCase))
{
String bodyString = new StreamReader(byteStream, Encoding.UTF8).ReadToEnd();
response.FastAddProperty("body", new JsValue(bodyString), false, true, false);
}
else
{
byte[] bytes = ReadAllBytes(byteStream);
if (bytes != null && bytes.Length > 0)
{
response.FastAddProperty("body", new JsValue(Convert.ToBase64String(bytes)), false, true, false);
}
}
}
public void Register(ManticoreEngine engine)
{
engine.ManticoreJsObject.FastAddProperty("_log",
engine.AsJsFunction((thisObject, args) =>
{
JsValue extra = JsValue.Null;
if (args.Length > 2)
{
extra = args[2];
}
Log(args[0].AsString(), args[1].AsString(), extra);
return(JsValue.Undefined);
}), true, false, false);
engine.ManticoreJsObject.FastAddProperty("_setTimeout",
engine.AsJsFunction((thisObject, args) =>
{
SetTimeout(engine, args[0].As <FunctionInstance>(), (int)args[1].AsNumber());
return(JsValue.Undefined);
}), true, false, false);
engine.ManticoreJsObject.FastAddProperty("_fetch",
engine.AsJsFunction((thisObject, args) =>
{
Task.Factory.StartNew(() =>
{
Fetch(engine, args[0], args[1]);
});
return(JsValue.Undefined);
}), true, false, false);
}
internal ManticoreJsError(ManticoreEngine manticoreEngine, Exception ex, int?code = null)
: base(manticoreEngine.jsEngine, ex.Message)
{
FastAddProperty("message", ex.Message, true, false, true);
FastAddProperty("code", code.HasValue ? new JsValue(code.Value) : JsValue.Null, true, false, true);
FastAddProperty("stack", ex.StackTrace, true, false, true);
FastAddProperty("toString", manticoreEngine.AsJsFunction(((thisObj, args) => ex.ToString())), true, false, false);
}
private async void sendRequest(ManticoreEngine engine, int timeout, HttpClient client, HttpRequestMessage request, JsValue callback)
{
var responseInfo = engine.CreateJsObject();
HttpResponseMessage response = null;
CancellationTokenSource cts = new CancellationTokenSource(timeout);
try
{
response = await client.SendRequestAsync(request, HttpCompletionOption.ResponseContentRead).AsTask(cts.Token);
}
catch (Exception x)
{
var ei = new JsErrorBuilder(engine, x).Build();
responseInfo.FastAddProperty("error", ei, false, true, false);
}
if (response != null && response.Headers.Count > 0)
{
var headerCollection = engine.CreateJsObject();
foreach (var kv in response.Headers)
{
try
{
headerCollection.FastAddProperty(kv.Key, new JsValue(kv.Value), false, true, false);
}
catch (ArgumentException)
{
// Swallow duplicate headers for now.
}
}
responseInfo.FastAddProperty("headers", headerCollection, false, true, false);
}
byte[] binaryResult = null;
if (response != null)
{
responseInfo.FastAddProperty("status", new JsValue((int)response.StatusCode), false, true, false);
// TODO find a way to sneak this wait into the gap between returning and asking for the results
// json/body/text signatures probably need to change to take a callback.
binaryResult = (await response.Content.ReadAsBufferAsync()).ToArray();
}
engine.Js(() =>
{
responseInfo.FastAddProperty("json", engine.AsJsFunction((thisObject, args) => {
return(engine.jsEngine.Json.Parse(JsValue.Null,
new JsValue[] { Encoding.UTF8.GetString(binaryResult, 0, binaryResult.Length) }));
}), false, false, false);
responseInfo.FastAddProperty("body", engine.AsJsFunction((thisObject, args) => {
return(engine.jsEngine.Json.Parse(JsValue.Null, new JsValue[] { Convert.ToBase64String(binaryResult) }));
}), false, false, false);
responseInfo.FastAddProperty("text", engine.AsJsFunction((thisObject, args) => {
return(new JsValue(Encoding.UTF8.GetString(binaryResult, 0, binaryResult.Length)));
}), false, false, false);
callback.As <FunctionInstance>().Call(engine.ManticoreJsObject, new JsValue[] { JsValue.Null, responseInfo });
});
}
public void Register(ManticoreEngine engine)
{
this.engine = engine;
engine.ManticoreJsObject._log = new Action <String, String>((level, message) => log(level, message));
engine.ManticoreJsObject._setTimeout = new Action <dynamic, int>((fn, msec) =>
{
setTimeout(fn, msec);
});
engine.ManticoreJsObject._fetch = new Action <dynamic, dynamic>((opts, cb) => this.fetch(opts, cb));
}
public static void CreateManticoreEngine(String script, String name)
{
if (Engine != null && Engine.IsStarted)
{
throw new InvalidOperationException("You must shut down the existing engine before creating a new one.");
}
var e = new ManticoreEngine();
e.Converter = new DefaultConverter <JsBackedObject>(e, (native) => native.impl, (jsErr) => new ManticoreException(jsErr));
// Typically, you would add your own native method implementations to
// the ManticoreJsObject here, before you load your script
e.LoadScript(script, name);
Engine = e;
}
private async void SetTimeout(ManticoreEngine engine, FunctionInstance callback, int timeout)
{
await Task.Delay(TimeSpan.FromMilliseconds(timeout));
engine.Js(() =>
{
try
{
callback.Call(JsValue.Null, new JsValue[] { });
}
catch (Exception x)
{
Debug.WriteLine(x);
}
});
}
private void SetTimeout(ManticoreEngine engine, FunctionInstance callback, int timeout)
{
System.Timers.Timer timer = new System.Timers.Timer();
// TODO not sure there may be a better way to emulate NextTick
timer.Interval = Math.Max(1, timeout);
timer.AutoReset = false;
timer.Elapsed += (obj, args) =>
{
engine.Js(() =>
{
try
{
callback.Call(JsValue.Null, new JsValue[] { });
}
catch (Exception x)
{
// TODO perhaps throw this error INTO JS?
Log("error", x.ToString(), JsValue.Null);
}
});
};
timer.Start();
}
public static void ParseResponseBody(ManticoreEngine engine, dynamic responseInfo, String format, byte[] response)
{
if ("json".Equals(format, StringComparison.OrdinalIgnoreCase))
{
String json = Encoding.UTF8.GetString(response);
if (json.Length > 0)
{
responseInfo.body = engine.v8.Script.JSON.parse(json);
}
}
else if (!"binary".Equals(format, StringComparison.OrdinalIgnoreCase))
{
String bodyString = Encoding.UTF8.GetString(response);
responseInfo.body = bodyString;
}
else
{
if (response.Length > 0)
{
responseInfo.body = Convert.ToBase64String(response);
}
}
}
public JsErrorBuilder(ManticoreEngine manticoreEngine, Exception ex)
{
_engine = manticoreEngine;
_exception = ex;
}
public void Fetch(ManticoreEngine engine, JsValue optionsValue, JsValue callback)
{
var options = optionsValue.As <ObjectInstance>();
JsValue rawBody = options.Get("nativeBody").As <FunctionInstance>().Call(options, ManticoreEngine.EmptyArgs);
var hasBody = rawBody.IsString() && rawBody.AsString().Length > 0;
var request = (HttpWebRequest)WebRequest.Create(options.Get("url").AsString());
request.Method = "GET";
if (options.HasProperty("method"))
{
request.Method = options.Get("method").AsString();
}
if (options.HasProperty("headers"))
{
var headers = options.Get("headers").AsObject();
var raw = headers.Get("raw").As <FunctionInstance>().Call(headers, ManticoreEngine.EmptyArgs);
if (raw.IsObject())
{
foreach (var p in raw.AsObject().GetOwnProperties())
{
if (p.Key.Equals("Content-Type", StringComparison.OrdinalIgnoreCase))
{
if (hasBody)
{
request.ContentType = p.Value.Value.Value.AsString();
}
}
else if (p.Key.Equals("If-Modified-Since", StringComparison.OrdinalIgnoreCase))
{
request.IfModifiedSince = DateTime.Parse(p.Value.Value.Value.AsString());
}
else
{
request.Headers.Add(p.Key, p.Value.Value.Value.AsString());
}
}
}
}
if (hasBody)
{
var body = rawBody.AsString();
byte[] bodyBytes;
if (options.HasProperty("isBase64") && options.Get("isBase64").AsBoolean())
{
bodyBytes = Convert.FromBase64String(body);
}
else
{
bodyBytes = Encoding.UTF8.GetBytes(body);
}
request.ContentLength = bodyBytes.Length;
var errorInstance = JsValue.Null;
try
{
var rqStream = request.GetRequestStream();
rqStream.Write(bodyBytes, 0, bodyBytes.Length);
rqStream.Close();
}
catch (Exception x)
{
// TODO fire this log into JS? manticore.onError()?
Log("error", x.ToString(), JsValue.Null);
var errorBuilder = new JsErrorBuilder(engine, x);
if (x is WebException)
{
errorBuilder.SetErrorCode((int)ErrorCodes.NetworkOffline);
}
errorInstance = errorBuilder.Build();
}
if (errorInstance != JsValue.Null)
{
engine.Js(() =>
{
callback.As <FunctionInstance>().Call(engine.ManticoreJsObject, new[] { errorInstance, JsValue.Null });
});
return;
}
}
sendRequest(engine, request, callback);
}
public void Fetch(ManticoreEngine engine, JsValue optionsValue, JsValue callback)
{
var options = optionsValue.As <ObjectInstance>();
var httpBaseFilter = new HttpBaseProtocolFilter
{
AllowUI = false
};
var client = new HttpClient(httpBaseFilter);
HttpMethod requestMethod = HttpMethod.Get;
if (options.HasProperty("method"))
{
var method = options.Get("method").AsString();
if (method != null)
{
switch (method.ToLower())
{
case "delete":
requestMethod = HttpMethod.Delete;
break;
case "head":
requestMethod = HttpMethod.Head;
break;
case "options":
requestMethod = HttpMethod.Options;
break;
case "patch":
requestMethod = HttpMethod.Patch;
break;
case "post":
requestMethod = HttpMethod.Post;
break;
case "put":
requestMethod = HttpMethod.Put;
break;
}
}
}
var urlString = options.Get("url").AsString();
var rawBody = options.Get("nativeBody").As <ScriptFunctionInstance>().Call(options, ManticoreEngine.EmptyArgs);
var hasBody = rawBody.IsString() && rawBody.AsString().Length > 0;
var request = new HttpRequestMessage(requestMethod, new Uri(urlString));
if (options.HasProperty("headers"))
{
var headers = options.Get("headers").AsObject();
var raw = headers.Get("raw").As <FunctionInstance>().Call(headers, ManticoreEngine.EmptyArgs);
if (raw.IsObject())
{
foreach (var p in raw.AsObject().GetOwnProperties())
{
if (p.Key.Equals("Content-Type", StringComparison.OrdinalIgnoreCase))
{
if (hasBody)
{
request.Content.Headers.Add(p.Key, p.Value.Value.Value.AsString());
}
}
else
{
request.Headers.Add(p.Key, p.Value.Value.Value.AsString());
}
}
}
}
if (hasBody)
{
if (options.HasProperty("isBase64") && options.Get("isBase64").AsBoolean())
{
request.Content = new HttpBufferContent(Convert.FromBase64String(rawBody.AsString()).AsBuffer());
}
else
{
request.Content = new HttpBufferContent(Encoding.UTF8.GetBytes(rawBody.AsString()).AsBuffer());
}
}
int timeout = 60000;
if (options.HasProperty("timeout") && options.Get("timeout").IsNumber())
{
timeout = (int)options.Get("timeout").AsNumber();
}
sendRequest(engine, timeout, client, request, callback);
}
private void sendRequest(ManticoreEngine engine, HttpWebRequest request, JsValue callback)
{
request.BeginGetResponse((asyncResult) =>
{
HttpWebResponse response = null;
var errorInstance = JsValue.Null;
try
{
response = (HttpWebResponse)request.EndGetResponse(asyncResult);
}
catch (WebException e)
{
if (e.Status == WebExceptionStatus.ProtocolError) //Response was received from server but indicated protocol level error
{
response = (HttpWebResponse)e.Response;
}
else
{
errorInstance = new JsErrorBuilder(engine, e).SetErrorCode((int)ErrorCodes.NetworkOffline).Build();
}
}
if (response == null)
{
engine.Js(() =>
{
callback.As <FunctionInstance>().Call(engine.ManticoreJsObject, new[] { errorInstance, JsValue.Null });
});
return;
}
var responseInfo = engine.CreateJsObject();
if (response.Headers.Count > 0)
{
var headerCollection = engine.CreateJsObject();
foreach (var kv in response.Headers.AllKeys)
{
headerCollection.FastAddProperty(kv, new JsValue(response.Headers[kv]), false, true, false);
}
responseInfo.FastAddProperty("headers", headerCollection, false, true, false);
}
responseInfo.FastAddProperty("status", new JsValue((int)response.StatusCode), false, true, false);
// TODO find a way to sneak this wait into the gap between returning and asking for the results
// json/body/text signatures probably need to change to take a callback.
var memStream = new MemoryStream();
response.GetResponseStream().CopyTo(memStream);
var binaryResult = memStream.ToArray();
responseInfo.FastAddProperty("json", engine.AsJsFunction((thisObject, args) => {
return(engine.jsEngine.Json.Parse(JsValue.Null, new JsValue[] { Encoding.UTF8.GetString(binaryResult) }));
}), false, false, false);
responseInfo.FastAddProperty("body", engine.AsJsFunction((thisObject, args) => {
return(engine.jsEngine.Json.Parse(JsValue.Null, new JsValue[] { Convert.ToBase64String(binaryResult) }));
}), false, false, false);
responseInfo.FastAddProperty("text", engine.AsJsFunction((thisObject, args) => {
return(new JsValue(Encoding.UTF8.GetString(binaryResult)));
}), false, false, false);
engine.Js(() =>
{
callback.As <FunctionInstance>().Call(engine.ManticoreJsObject, new[] { errorInstance, responseInfo });
});
}, null);
}
/// <summary>
/// One of the important goals of Manticore is to isolate the fact that you have chosen to use it
/// for services you advertise to others (e.g. the SDK scenario). SO, you can't have your objects
/// inherit from our base class. This converter constructor is your punishment. You need to provide
/// us two simple lambdas - one that retrives the JS value from your objects and one that makes
/// your exception class. This means that in most simple cases you won't have to derive from
/// DefaultConverter, just create one.
/// </summary>
public DefaultConverter(ManticoreEngine engine, Func <JsBaseClass, dynamic> jsExtractor, Func <dynamic, Exception> jsException)
{
this.engine = engine;
this.jsExtractor = jsExtractor;
this.jsException = jsException;
}
/// <summary>
/// One of the important goals of Manticore is to isolate the fact that you have chosen to use it
/// for services you advertise to others (e.g. the SDK scenario). SO, you can't have your objects
/// inherit from our base class. This converter constructor is your punishment. You need to provide
/// us two simple lambdas - one that retrives the JS value from your objects and one that makes
/// your exception class. This means that in most simple cases you won't have to derive from
/// DefaultConverter, just create one.
/// </summary>
public DefaultConverter(ManticoreEngine engine, Func <JsBaseClass, JsValue> jsExtractor, Func <ObjectInstance, Exception> jsException)
{
this.engine = engine;
this.jsExtractor = jsExtractor;
this.jsException = jsException;
}