/// <summary>Executes a pipeline with the current app</summary>
/// <param name="pipeline">The pipeline to execute.</param>
/// <returns>A task containing the result of the pipeline that can be
/// resolved on completion of the execution. </returns>
public async Task <StitchResult <List <BsonDocument> > > ExecutePipeline(
params PipelineStage[] pipeline)
{
if (!IsAuthenticated())
{
throw new Exception("Must first authenticate");
}
var stitchResult = new StitchResult <List <BsonDocument> >();
string pipeStr;
try
{
pipeStr = pipeline.ToJson();
}
catch (Exception e)
{
Console.Error.WriteLine(e);
stitchResult.Error = e;
return(stitchResult);
}
return(await this.ExecuteRequest(
HttpMethod.Post,
GetResourcePath(Paths.Pipeline),
pipeStr,
rawUnmarshaller : (string res) =>
{
return BsonDocument.Parse(res)["result"]
.AsBsonArray
.ToList()
.ConvertAll(obj => obj.AsBsonDocument);
}
));
}
private async Task <StitchResult <T> > ExecuteRequest <T>(
HttpMethod httpMethod,
string url,
string payload = null,
Func <JObject, T> unmarshaller = null,
Func <string, T> rawUnmarshaller = null,
bool refreshOnFailure = true,
bool useRefreshToken = false
)
{
var stitchResult = new StitchResult <T>();
try
{
var request = new HttpRequestMessage(
httpMethod,
url);
if (IsAuthenticated())
{
Console.WriteLine(Auth.AccessToken);
request.Headers.Add(
"Authorization",
"Bearer " + (useRefreshToken ?
GetRefreshToken() : Auth.AccessToken));
}
if (payload != null)
{
Console.WriteLine(payload);
request.Content = new StringContent(payload,
System.Text.Encoding.UTF8,
"application/json");
}
var response = await _httpClient.SendAsync(request);
var content = await response.Content.ReadAsStringAsync();
var json = JObject.Parse(content);
Console.WriteLine("Request: {0}", payload);
Console.WriteLine("Response: {0}", content);
var error = json["error"];
if (error != null)
{
if (json["errorCode"] != null &&
json["errorCode"].ToString() == "InvalidSession")
{
Console.Error.Write(error);
if (!refreshOnFailure)
{
ClearAuth();
stitchResult.Error = new Exception(error.ToString());
return(stitchResult);
}
return(await HandleInvalidSession(
httpMethod,
url,
payload,
unmarshaller,
rawUnmarshaller
));
}
else
{
stitchResult.Error = new Exception(error.ToString());
}
}
else
{
if (rawUnmarshaller != null)
{
stitchResult.Value = rawUnmarshaller(content);
}
else
{
stitchResult.Value = unmarshaller(json);
}
}
}
catch (Exception e)
{
Console.Error.WriteLine(e);
stitchResult.Error = e;
}
return(stitchResult);
}
