private void HandleFailures(HttpMessage httpMessage, IPersistentBlob blob)
{
int retryInterval;
if (!httpMessage.HasResponse)
{
// HttpRequestException
// Extend lease time so that it is not picked again for retry.
blob.Lease(HttpPipelineHelper.MinimumRetryInterval);
}
else
{
switch (httpMessage.Response.Status)
{
case ResponseStatusCodes.PartialSuccess:
// Parse retry-after header
// Send Failed Messages To Storage
// Delete existing file
TrackResponse trackResponse = HttpPipelineHelper.GetTrackResponse(httpMessage);
var content = HttpPipelineHelper.GetPartialContentForRetry(trackResponse, httpMessage.Request.Content);
if (content != null)
{
retryInterval = HttpPipelineHelper.GetRetryInterval(httpMessage.Response);
blob.Delete();
_storage.SaveTelemetry(content, retryInterval);
}
break;
case ResponseStatusCodes.RequestTimeout:
case ResponseStatusCodes.ResponseCodeTooManyRequests:
case ResponseStatusCodes.ResponseCodeTooManyRequestsAndRefreshCache:
// Extend lease time using retry interval period
// so that it is not picked up again before that.
retryInterval = HttpPipelineHelper.GetRetryInterval(httpMessage.Response);
blob.Lease(retryInterval);
break;
case ResponseStatusCodes.InternalServerError:
case ResponseStatusCodes.BadGateway:
case ResponseStatusCodes.ServiceUnavailable:
case ResponseStatusCodes.GatewayTimeout:
// Extend lease time so that it is not picked up again
blob.Lease(HttpPipelineHelper.MinimumRetryInterval);
break;
default:
// Log Non-Retriable Status and don't retry or store;
// File will be cleared by maintenance job
break;
}
}
}
public void FileBlobTests_Lease()
{
var testFile = new FileInfo(Path.Combine(Path.GetTempPath(), Path.GetRandomFileName()));
IPersistentBlob blob = new FileBlob(testFile.FullName);
var data = Encoding.UTF8.GetBytes("Hello, World!");
var leasePeriodMilliseconds = 1000;
IPersistentBlob blob1 = blob.Write(data);
IPersistentBlob leasedBlob = blob1.Lease(leasePeriodMilliseconds);
Assert.Contains(".lock", ((FileBlob)leasedBlob).FullPath);
blob1.Delete();
Assert.False(testFile.Exists);
}
private void HandleFailures(HttpMessage httpMessage, IPersistentBlob blob)
{
int retryInterval;
int statusCode = 0;
bool shouldRetry = true;
if (!httpMessage.HasResponse)
{
// HttpRequestException
// Extend lease time so that it is not picked again for retry.
blob.Lease(HttpPipelineHelper.MinimumRetryInterval);
}
else
{
statusCode = httpMessage.Response.Status;
switch (statusCode)
{
case ResponseStatusCodes.PartialSuccess:
// Parse retry-after header
// Send Failed Messages To Storage
// Delete existing file
TrackResponse trackResponse = HttpPipelineHelper.GetTrackResponse(httpMessage);
var content = HttpPipelineHelper.GetPartialContentForRetry(trackResponse, httpMessage.Request.Content);
if (content != null)
{
retryInterval = HttpPipelineHelper.GetRetryInterval(httpMessage.Response);
blob.Delete();
_storage.SaveTelemetry(content, retryInterval);
}
break;
case ResponseStatusCodes.RequestTimeout:
case ResponseStatusCodes.ResponseCodeTooManyRequests:
case ResponseStatusCodes.ResponseCodeTooManyRequestsAndRefreshCache:
// Extend lease time using retry interval period
// so that it is not picked up again before that.
retryInterval = HttpPipelineHelper.GetRetryInterval(httpMessage.Response);
blob.Lease(retryInterval);
break;
case ResponseStatusCodes.InternalServerError:
case ResponseStatusCodes.BadGateway:
case ResponseStatusCodes.ServiceUnavailable:
case ResponseStatusCodes.GatewayTimeout:
// Extend lease time so that it is not picked up again
blob.Lease(HttpPipelineHelper.MinimumRetryInterval);
break;
default:
// Log Non-Retriable Status and don't retry or store;
// File will be cleared by maintenance job
shouldRetry = false;
break;
}
}
if (shouldRetry)
{
AzureMonitorExporterEventSource.Log.WriteWarning("FailedToTransmitFromStorage", $"Error code is {statusCode}: Telemetry is stored offline for retry");
}
else
{
AzureMonitorExporterEventSource.Log.WriteWarning("FailedToTransmitFromStorage", $"Error code is {statusCode}: Telemetry is dropped");
}
}