public async Task <IBoxResponse <T> > ExecuteAsync <T>(IBoxRequest request)
where T : class
{
// Need to account for special cases when the return type is a stream
bool isStream = typeof(T) == typeof(Stream);
var retryCounter = 0;
ExponentialBackoff expBackoff = new ExponentialBackoff();
try
{
// TODO: yhu@ better handling of different request
var isMultiPartRequest = request.GetType() == typeof(BoxMultiPartRequest);
var isBinaryRequest = request.GetType() == typeof(BoxBinaryRequest);
while (true)
{
HttpRequestMessage httpRequest = getHttpRequest(request, isMultiPartRequest, isBinaryRequest);
Debug.WriteLine(string.Format("RequestUri: {0}", httpRequest.RequestUri));
HttpResponseMessage response = await getResponse(request, isStream, httpRequest).ConfigureAwait(false);
//need to wait for Retry-After seconds and then retry request
var retryAfterHeader = response.Headers.RetryAfter;
// If we get a retryable/transient error code and this is not a multi part request (meaning a file upload, which cannot be retried
// because the stream cannot be reset) and we haven't exceeded the number of allowed retries, then retry the request.
// If we get a 202 code and has a retry-after header, we will retry after
if (!isMultiPartRequest &&
(response.StatusCode == TooManyRequests
||
response.StatusCode == HttpStatusCode.InternalServerError
||
response.StatusCode == HttpStatusCode.BadGateway
||
response.StatusCode == HttpStatusCode.ServiceUnavailable
||
response.StatusCode == HttpStatusCode.GatewayTimeout
||
(response.StatusCode == HttpStatusCode.Accepted && retryAfterHeader != null)) &&
retryCounter++ < RetryLimit)
{
TimeSpan delay = expBackoff.GetRetryTimeout(retryCounter);
Debug.WriteLine("HttpCode : {0}. Waiting for {1} seconds to retry request. RequestUri: {2}", response.StatusCode, delay.Seconds, httpRequest.RequestUri);
await Task.Delay(delay);
}
else
{
BoxResponse <T> boxResponse = await getBoxResponse <T>(isStream, response).ConfigureAwait(false);
return(boxResponse);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Exception: {0}", ex.Message));
throw;
}
}
public async Task <IBoxResponse <T> > ExecuteAsyncWithoutRetry <T>(IBoxRequest request)
where T : class
{
// Need to account for special cases when the return type is a stream
bool isStream = typeof(T) == typeof(Stream);
try
{
// TODO: yhu@ better handling of different request
var isMultiPartRequest = request.GetType() == typeof(BoxMultiPartRequest);
var isBinaryRequest = request.GetType() == typeof(BoxBinaryRequest);
HttpRequestMessage httpRequest = getHttpRequest(request, isMultiPartRequest, isBinaryRequest);
Debug.WriteLine(string.Format("RequestUri: {0}", httpRequest.RequestUri));
HttpResponseMessage response = await getResponse(request, isStream, httpRequest).ConfigureAwait(false);
BoxResponse <T> boxResponse = await getBoxResponse <T>(isStream, response).ConfigureAwait(false);
return(boxResponse);
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Exception: {0}", ex.Message));
throw;
}
}
private static async Task <BoxResponse <T> > GetBoxResponse <T>(bool isStream, HttpResponseMessage response) where T : class
{
var boxResponse = new BoxResponse <T>
{
Headers = response.Headers,
// Translate the status codes that interest us
StatusCode = response.StatusCode
};
switch (response.StatusCode)
{
case HttpStatusCode.OK:
case HttpStatusCode.Created:
case HttpStatusCode.NoContent:
case HttpStatusCode.Found:
case HttpStatusCode.PartialContent: // Download with range
boxResponse.Status = ResponseStatus.Success;
break;
case HttpStatusCode.Accepted:
boxResponse.Status = ResponseStatus.Pending;
break;
case HttpStatusCode.Unauthorized:
boxResponse.Status = ResponseStatus.Unauthorized;
break;
case HttpStatusCode.Forbidden:
boxResponse.Status = ResponseStatus.Forbidden;
break;
case TooManyRequests:
boxResponse.Status = ResponseStatus.TooManyRequests;
break;
default:
boxResponse.Status = ResponseStatus.Error;
break;
}
if (isStream && boxResponse.Status == ResponseStatus.Success)
{
var resObj = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
boxResponse.ResponseObject = resObj as T;
}
else
{
boxResponse.ContentString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
// We can safely dispose the response now since all of it has been read
response.Dispose();
}
return(boxResponse);
}
public async Task <IBoxResponse <T> > ExecuteAsync <T>(IBoxRequest request)
where T : class
{
// Need to account for special cases when the return type is a stream
bool isStream = typeof(T) == typeof(Stream);
HttpRequestMessage httpRequest = request.GetType() == typeof(BoxMultiPartRequest) ?
BuildMultiPartRequest(request as BoxMultiPartRequest) :
BuildRequest(request);
// Add headers
foreach (var kvp in request.HttpHeaders)
{
if (kvp.Key == Constants.RequestParameters.ContentMD5)
{
httpRequest.Content.Headers.Add(kvp.Key, kvp.Value);
}
else
{
httpRequest.Headers.TryAddWithoutValidation(kvp.Key, kvp.Value);
}
}
// If we are retrieving a stream, we should return without reading the entire response
HttpCompletionOption completionOption = isStream ?
HttpCompletionOption.ResponseHeadersRead :
HttpCompletionOption.ResponseContentRead;
Debug.WriteLine(string.Format("RequestUri: {0}", httpRequest.RequestUri));//, RequestHeader: {1} , httpRequest.Headers.Select(i => string.Format("{0}:{1}", i.Key, i.Value)).Aggregate((i, j) => i + "," + j)));
try
{
HttpClient client = CreateClient(request);
HttpResponseMessage response = await client.SendAsync(httpRequest, completionOption).ConfigureAwait(false);
BoxResponse <T> boxResponse = new BoxResponse <T>();
boxResponse.Headers = response.Headers;
// Translate the status codes that interest us
boxResponse.StatusCode = response.StatusCode;
switch (response.StatusCode)
{
case HttpStatusCode.OK:
case HttpStatusCode.Created:
case HttpStatusCode.NoContent:
case HttpStatusCode.Found:
boxResponse.Status = ResponseStatus.Success;
break;
case HttpStatusCode.Accepted:
boxResponse.Status = ResponseStatus.Pending;
break;
case HttpStatusCode.Unauthorized:
boxResponse.Status = ResponseStatus.Unauthorized;
break;
case HttpStatusCode.Forbidden:
boxResponse.Status = ResponseStatus.Forbidden;
break;
default:
boxResponse.Status = ResponseStatus.Error;
break;
}
if (isStream && boxResponse.Status == ResponseStatus.Success)
{
var resObj = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
boxResponse.ResponseObject = resObj as T;
}
else
{
boxResponse.ContentString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
}
return(boxResponse);
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Exception: {0}", ex.Message));
throw;
}
}
public async Task <IBoxResponse <T> > ExecuteAsync <T>(IBoxRequest request)
where T : class
{
// Need to account for special cases when the return type is a stream
bool isStream = typeof(T) == typeof(Stream);
var retryCounter = 0;
ExponentialBackoff expBackoff = new ExponentialBackoff();
try
{
// TODO: yhu@ better handling of different request
var isMultiPartRequest = request.GetType() == typeof(BoxMultiPartRequest);
var isBinaryRequest = request.GetType() == typeof(BoxBinaryRequest);
while (true)
{
HttpRequestMessage httpRequest = null;
if (isMultiPartRequest)
{
httpRequest = BuildMultiPartRequest(request as BoxMultiPartRequest);
}
else if (isBinaryRequest)
{
httpRequest = BuildBinaryRequest(request as BoxBinaryRequest);
}
else
{
httpRequest = BuildRequest(request);
}
// Add headers
foreach (var kvp in request.HttpHeaders)
{
// They could not be added to the headers directly
if (kvp.Key == Constants.RequestParameters.ContentMD5 ||
kvp.Key == Constants.RequestParameters.ContentRange)
{
httpRequest.Content.Headers.Add(kvp.Key, kvp.Value);
}
else
{
httpRequest.Headers.TryAddWithoutValidation(kvp.Key, kvp.Value);
}
}
// If we are retrieving a stream, we should return without reading the entire response
HttpCompletionOption completionOption = isStream ?
HttpCompletionOption.ResponseHeadersRead :
HttpCompletionOption.ResponseContentRead;
Debug.WriteLine(string.Format("RequestUri: {0}", httpRequest.RequestUri));
HttpClient client = GetClient(request);
// Not disposing the reponse since it will affect stream response
var response = await client.SendAsync(httpRequest, completionOption).ConfigureAwait(false);
//need to wait for Retry-After seconds and then retry request
var retryAfterHeader = response.Headers.RetryAfter;
// If we get a retryable/transient error code and this is not a multi part request (meaning a file upload, which cannot be retried
// because the stream cannot be reset) and we haven't exceeded the number of allowed retries, then retry the request.
// If we get a 202 code and has a retry-after header, we will retry after
if (!isMultiPartRequest &&
(response.StatusCode == TooManyRequests
||
response.StatusCode == HttpStatusCode.InternalServerError
||
response.StatusCode == HttpStatusCode.GatewayTimeout
||
response.StatusCode == HttpStatusCode.BadGateway
||
(response.StatusCode == HttpStatusCode.Accepted && retryAfterHeader != null)) &&
retryCounter++ < RetryLimit)
{
TimeSpan delay = expBackoff.GetRetryTimeout(retryCounter);
Debug.WriteLine("HttpCode : {0}. Waiting for {1} seconds to retry request. RequestUri: {2}", response.StatusCode, delay.Seconds, httpRequest.RequestUri);
await Task.Delay(delay);
}
else
{
BoxResponse <T> boxResponse = new BoxResponse <T>();
boxResponse.Headers = response.Headers;
// Translate the status codes that interest us
boxResponse.StatusCode = response.StatusCode;
switch (response.StatusCode)
{
case HttpStatusCode.OK:
case HttpStatusCode.Created:
case HttpStatusCode.NoContent:
case HttpStatusCode.Found:
case HttpStatusCode.PartialContent: // Download with range
boxResponse.Status = ResponseStatus.Success;
break;
case HttpStatusCode.Accepted:
boxResponse.Status = ResponseStatus.Pending;
break;
case HttpStatusCode.Unauthorized:
boxResponse.Status = ResponseStatus.Unauthorized;
break;
case HttpStatusCode.Forbidden:
boxResponse.Status = ResponseStatus.Forbidden;
break;
case TooManyRequests:
boxResponse.Status = ResponseStatus.TooManyRequests;
break;
default:
boxResponse.Status = ResponseStatus.Error;
break;
}
if (isStream && boxResponse.Status == ResponseStatus.Success)
{
var resObj = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
boxResponse.ResponseObject = resObj as T;
}
else
{
boxResponse.ContentString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
// We can safely dispose the response now since all of it has been read
response.Dispose();
}
return(boxResponse);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Exception: {0}", ex.Message));
throw;
}
}
public async Task <IBoxResponse <T> > ExecuteAsync <T>(IBoxRequest request)
where T : class
{
// Need to account for special cases when the return type is a stream
bool isStream = typeof(T) == typeof(Stream);
var numRetries = 3;
try
{
// TODO: yhu@ better handling of different request
var isMultiPartRequest = request.GetType() == typeof(BoxMultiPartRequest);
var isBinaryRequest = request.GetType() == typeof(BoxBinaryRequest);
while (true)
{
HttpRequestMessage httpRequest = null;
if (isMultiPartRequest)
{
httpRequest = BuildMultiPartRequest(request as BoxMultiPartRequest);
}
else if (isBinaryRequest)
{
httpRequest = BuildBinaryRequest(request as BoxBinaryRequest);
}
else
{
httpRequest = BuildRequest(request);
}
// Add headers
foreach (var kvp in request.HttpHeaders)
{
// They could not be added to the headers directly
if (kvp.Key == Constants.RequestParameters.ContentMD5 ||
kvp.Key == Constants.RequestParameters.ContentRange)
{
httpRequest.Content.Headers.Add(kvp.Key, kvp.Value);
}
else
{
httpRequest.Headers.TryAddWithoutValidation(kvp.Key, kvp.Value);
}
}
// If we are retrieving a stream, we should return without reading the entire response
HttpCompletionOption completionOption = isStream ?
HttpCompletionOption.ResponseHeadersRead :
HttpCompletionOption.ResponseContentRead;
Debug.WriteLine(string.Format("RequestUri: {0}", httpRequest.RequestUri));//, RequestHeader: {1} , httpRequest.Headers.Select(i => string.Format("{0}:{1}", i.Key, i.Value)).Aggregate((i, j) => i + "," + j)));
HttpClient client = GetClient(request);
// Not disposing the reponse since it will affect stream response
var response = await client.SendAsync(httpRequest, completionOption).ConfigureAwait(false);
//need to wait for Retry-After seconds and then retry request
var retryAfterHeader = response.Headers.RetryAfter;
// If we get a 429 error code and this is not a multi part request (meaning a file upload, which cannot be retried
// because the stream cannot be reset) and we haven't exceeded the number of allowed retries, then retry the request.
// If we get a 202 code and has a retry-after header, we will retry after
if (
((response.StatusCode == TooManyRequests && !isMultiPartRequest)
||
(response.StatusCode == HttpStatusCode.Accepted && retryAfterHeader != null)) &&
numRetries-- > 0)
{
TimeSpan delay = TimeSpan.FromSeconds(2);
if (retryAfterHeader.Delta.HasValue)
{
delay = retryAfterHeader.Delta.Value;
}
Debug.WriteLine("HttpCode : {0}. Waiting for {1} seconds to retry request. RequestUri: {2}", response.StatusCode, delay.Seconds, httpRequest.RequestUri);
await CrossPlatform.Delay(delay);
}
else
{
BoxResponse <T> boxResponse = new BoxResponse <T>();
boxResponse.Headers = response.Headers;
// Translate the status codes that interest us
boxResponse.StatusCode = response.StatusCode;
switch (response.StatusCode)
{
case HttpStatusCode.OK:
case HttpStatusCode.Created:
case HttpStatusCode.NoContent:
case HttpStatusCode.Found:
boxResponse.Status = ResponseStatus.Success;
break;
case HttpStatusCode.Accepted:
boxResponse.Status = ResponseStatus.Pending;
break;
case HttpStatusCode.Unauthorized:
boxResponse.Status = ResponseStatus.Unauthorized;
break;
case HttpStatusCode.Forbidden:
boxResponse.Status = ResponseStatus.Forbidden;
break;
case TooManyRequests:
boxResponse.Status = ResponseStatus.TooManyRequests;
break;
default:
boxResponse.Status = ResponseStatus.Error;
break;
}
if (isStream && boxResponse.Status == ResponseStatus.Success)
{
var resObj = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
boxResponse.ResponseObject = resObj as T;
}
else
{
boxResponse.ContentString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
}
return(boxResponse);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Exception: {0}", ex.Message));
throw;
}
}
public async Task <IBoxResponse <T> > ExecuteAsync <T>(IBoxRequest request)
where T : class
{
// Need to account for special cases when the return type is a stream
bool isStream = typeof(T) == typeof(Stream);
var numRetries = 3;
try
{
while (true)
{
HttpRequestMessage httpRequest = request.GetType() == typeof(BoxMultiPartRequest) ?
BuildMultiPartRequest(request as BoxMultiPartRequest) :
BuildRequest(request);
// Add headers
foreach (var kvp in request.HttpHeaders)
{
if (kvp.Key == Constants.RequestParameters.ContentMD5)
{
httpRequest.Content.Headers.Add(kvp.Key, kvp.Value);
}
else
{
httpRequest.Headers.TryAddWithoutValidation(kvp.Key, kvp.Value);
}
}
// If we are retrieving a stream, we should return without reading the entire response
HttpCompletionOption completionOption = isStream ?
HttpCompletionOption.ResponseHeadersRead :
HttpCompletionOption.ResponseContentRead;
Debug.WriteLine(string.Format("RequestUri: {0}", httpRequest.RequestUri));//, RequestHeader: {1} , httpRequest.Headers.Select(i => string.Format("{0}:{1}", i.Key, i.Value)).Aggregate((i, j) => i + "," + j)));
HttpClient client = CreateClient(request);
BoxResponse <T> boxResponse = new BoxResponse <T>();
HttpResponseMessage response = await client.SendAsync(httpRequest, completionOption).ConfigureAwait(false);
if (response.StatusCode == TooManyRequests && numRetries-- > 0)
{
//need to wait for Retry-After seconds and then retry request
var retryAfterHeader = response.Headers.RetryAfter;
TimeSpan delay;
if (retryAfterHeader.Delta.HasValue)
{
delay = retryAfterHeader.Delta.Value;
}
else
{
delay = TimeSpan.FromMilliseconds(2000);
}
Debug.WriteLine("TooManyRequests error (429). Waiting for {0} seconds to retry request. RequestUri: {1}", delay.Seconds, httpRequest.RequestUri);
await CrossPlatform.Delay(Convert.ToInt32(delay.TotalMilliseconds));
}
else
{
boxResponse.Headers = response.Headers;
// Translate the status codes that interest us
boxResponse.StatusCode = response.StatusCode;
switch (response.StatusCode)
{
case HttpStatusCode.OK:
case HttpStatusCode.Created:
case HttpStatusCode.NoContent:
case HttpStatusCode.Found:
boxResponse.Status = ResponseStatus.Success;
break;
case HttpStatusCode.Accepted:
boxResponse.Status = ResponseStatus.Pending;
break;
case HttpStatusCode.Unauthorized:
boxResponse.Status = ResponseStatus.Unauthorized;
break;
case HttpStatusCode.Forbidden:
boxResponse.Status = ResponseStatus.Forbidden;
break;
case TooManyRequests:
boxResponse.Status = ResponseStatus.TooManyRequests;
break;
default:
boxResponse.Status = ResponseStatus.Error;
break;
}
if (isStream && boxResponse.Status == ResponseStatus.Success)
{
var resObj = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
boxResponse.ResponseObject = resObj as T;
}
else
{
boxResponse.ContentString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
}
return(boxResponse);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("Exception: {0}", ex.Message));
throw;
}
}
