private bool Validate(Stream content, ISinkConfig config)
{
bool result = false;
string msg = string.Empty;
if (content == null)
{
msg = Properties.Resources.Error_ParamWasNull + nameof(content);
}
else if (!content.CanRead)
{
msg = Properties.Resources.Error_ParamWasUnreadable + nameof(content);
}
else if (config == null)
{
msg = Properties.Resources.Error_ParamWasNull + nameof(config);
}
else if ((config as SinkFileConfig) == null)
{
msg = Properties.Resources.Error_ParamTypeWrong + nameof(config) + " -> " + nameof(SinkFileConfig);
}
else
{
result = true;
}
// Only send telemetry if fail
if (!result)
{
this.Telemetry.Send(new TelemetryEvent()
{
EventTypeValue = TelemetryEvent.EventTypes.Event, LevelValue = TelemetryEvent.Levels.Error, Message = msg, Success = false
});
}
return(result);
}
public async Task <bool> SendAsync(Stream content, ISinkConfig config)
{
// Validate stream and config
bool validationResult = Validate(content, config);
if (!validationResult)
{
return(false);
}
SinkFileConfig sinkFileConfig = config as SinkFileConfig;
// Ensure sink file folder exists - return if cannot
bool sinkFileResult = HandleSinkFolder(sinkFileConfig);
if (!(sinkFileResult))
{
return(false);
}
bool result = false;
var fi = new FileInfo(sinkFileConfig.FileUri);
// If sink file already exists, handle according to behavior specified on sink config
if (fi.Exists)
{
if (sinkFileConfig.BehaviorIfFileExists == SinkFileConfig.IfFileExists.DoNothing)
{
this.Telemetry.Send(new TelemetryEvent()
{
EventTypeValue = TelemetryEvent.EventTypes.Event, LevelValue = TelemetryEvent.Levels.Warning, Message = Properties.Resources.Warn_FileAlreadyExistedSoDataNotSentToSink, Success = true
});
return(false);
}
else if (sinkFileConfig.BehaviorIfFileExists == SinkFileConfig.IfFileExists.Error)
{
this.Telemetry.Send(new TelemetryEvent()
{
EventTypeValue = TelemetryEvent.EventTypes.Event, LevelValue = TelemetryEvent.Levels.Error, Message = Properties.Resources.Error_FileAlreadyExistedSoDataNotSentToSink, Success = false
});
return(false);
}
else if (sinkFileConfig.BehaviorIfFileExists == SinkFileConfig.IfFileExists.Replace)
{
fi.Delete();
this.Telemetry.Send(new TelemetryEvent()
{
EventTypeValue = TelemetryEvent.EventTypes.Event, LevelValue = TelemetryEvent.Levels.Warning, Message = Properties.Resources.Warn_FileAlreadyExistedAndWasDeleted, Success = true
});
}
}
// Write the data to the sink
using (FileStream fs = new FileStream(sinkFileConfig.FileUri, FileMode.Append, FileAccess.Write, FileShare.Read))
{
byte[] bytes;
using (var memoryStream = new MemoryStream())
{
await content.CopyToAsync(memoryStream);
bytes = memoryStream.ToArray();
}
try
{
await fs.WriteAsync(bytes, 0, bytes.Length);
result = true;
}
catch (Exception ex)
{
result = false;
this.Telemetry.Send(new TelemetryEvent()
{
EventTypeValue = TelemetryEvent.EventTypes.Exception, Exception = ex, Message = Properties.Resources.Error_FailureWritingDataToSink, Success = false
});
}
}
return(result);
}
