public async Task <bool> SaveAsync(Document document)
{
//The following 2 tasks where chosen for parallel execution as the logical sequence allows it and the
//application could get a performance improvement due to the CPU-bound nature of them.
Task <string> serializeContentTask = Task.Run(() => { return(JsonConvert.SerializeObject(document.Content)); });
Task <DocumentWithoutContent> documentMapperTask = Task.Run(() => { return(_mapper.Map <DocumentWithoutContent>(document)); });
await Task.WhenAll(serializeContentTask, documentMapperTask);
string content = serializeContentTask.Result;
DocumentWithoutContent documentWithoutContent = documentMapperTask.Result;
string documentWithoutContentSerialized = JsonConvert.SerializeObject(documentWithoutContent);
string fileExtension = MimeTypeFileExtension.GetFileExtensionFromMimeType(document.MimeType);
bool success;
try
{
//The logical sequence of this section allows the following two tasks to run in parallel as well
//but due the I/O-bound nature of them it will downgrade the performance of the process instead of improve it.
await File.WriteAllTextAsync(_folder + documentWithoutContent.FileName + fileExtension, content);
await File.WriteAllTextAsync(_folder + documentWithoutContent.FileName + ".json", documentWithoutContentSerialized);
success = true;
}
catch (Exception)
{
success = false;
}
return(success);
}
public async Task <Document> LoadAsync(string filename)
{
string documentWithoutContentSerialized;
try
{
documentWithoutContentSerialized = await System.IO.File.ReadAllTextAsync(_folder + filename + ".json");
}
catch (FileNotFoundException)
{
return(null);
}
DocumentWithoutContent documentWithoutContent = JsonConvert.DeserializeObject <DocumentWithoutContent>(documentWithoutContentSerialized);
Document document = _mapper.Map <Document>(documentWithoutContent);
string fileExtension = MimeTypeFileExtension.GetFileExtensionFromMimeType(document.MimeType);
string contentSerialized = await System.IO.File.ReadAllTextAsync(_folder + filename + fileExtension);
document.Content = JsonConvert.DeserializeObject <int[]>(contentSerialized);
return(document);
}
