public IActionResult OnPost(RZipfFunctionPrams requestItem)
{
// Determine that a file has been uploaded and the settings are valid
if (requestItem.file.Length > 0 & string.IsNullOrWhiteSpace(requestItem.Validate()))
{
// Create the working directory and move the relevent files to it
_workingDir = Path.Combine("wwwroot", "req", requestItem.id);
CreateDir();
CopyReqFiles(requestItem);
// Queue the RPlotWorker as a background task
Queue.QueueBackgroundWorkItem(async token =>
{
var worker = new RPlotWorker(requestItem, _logger);
await worker.StartTask();
});
// Redirect the user to the output
string imageURL = Request.Scheme + "://" + Request.Host + Request.PathBase + "/output/" + requestItem.id + ".png";
return(Redirect(imageURL));
}
else
{
return(StatusCode(201, "please upload a file or enter valid inputs"));
}
}
private void CopyReqFiles(RZipfFunctionPrams _prams)
{
//Copy the uploaded file to the working directory
using (var stream = new FileStream(Path.Combine(_workingDir, "data.txt"), FileMode.Create))
{
_prams.file.CopyTo(stream);
}
//Copy the R script to the working directory
string fromFile = Path.Combine(Directory.GetCurrentDirectory(), "r", "zipf.R");
string toFile = Path.Combine(_workingDir, "zipf.R");
System.IO.File.Copy(fromFile, toFile, true);
System.IO.File.SetAttributes(toFile, FileAttributes.Normal);
//Save the selected options to the working directory
using (var stream = new StreamWriter(Path.Combine(_workingDir, "settings.json"), false))
{
stream.Write(JsonConvert.SerializeObject(_prams));
}
}
public void OnGet()
{
requestItem = new RZipfFunctionPrams();
}