public async Task Load()
{
if (_logger.IsEnabled(LogLevel.Trace))
{
_logger.LogTrace($"load() from storage: {Storage?.ToString() ?? "N/A"}");
}
if (IsMultiplex)
{
if (_logger.IsEnabled(LogLevel.Trace))
{
_logger.LogTrace($"load() should not be called on a multiplex MemoryCard. NOOP");
}
return;
}
if (Payload != null)
{
throw new InvalidOperationException("memory had already loaded before.");
}
if (Storage != null)
{
Payload = await Storage.Load();
}
else
{
if (_logger.IsEnabled(LogLevel.Trace))
{
_logger.LogTrace($"load() no storage");
}
Payload = new MemoryCardPayload();
}
}
public override async Task Save(MemoryCardPayload payload)
{
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"save()");
}
var request = new PutObjectRequest
{
BucketName = _options.Bucket,
Key = Name
};
var stream = new MemoryStream();
var writer = new StreamWriter(stream, Encoding.UTF8, 512, true);
var serializer = new JsonSerializer();
serializer.Serialize(new JsonTextWriter(writer), payload);
stream.Seek(0, SeekOrigin.Begin);
request.InputStream = stream;
var response = await _s3.PutObjectAsync(request);
if (response.HttpStatusCode < HttpStatusCode.OK || response.HttpStatusCode >= HttpStatusCode.Ambiguous)
{
Logger.LogError($"save() failed. status code is {response.HttpStatusCode}");
var exception = new Exception("save() failed");
exception.Data.Add("request", request);
exception.Data.Add("response", response);
throw exception;
}
}
public override Task Save(MemoryCardPayload payload)
{
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"save()");
}
return(PutObject(payload));
}
public override Task Save(MemoryCardPayload payload)
{
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"save()");
}
return(Task.CompletedTask);
}
public override async Task Save(MemoryCardPayload payload)
{
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"save() to {_absFileName}");
}
var text = JsonConvert.SerializeObject(payload);
await File.WriteAllTextAsync(_absFileName, text);
}
private Task PutObject(MemoryCardPayload payload)
{
var source = new TaskCompletionSource <object>();
_ = Task.Run(() =>
{
try
{
using var stream = new MemoryStream();
using var writer = new StreamWriter(stream, Encoding.UTF8, 512, true);
var serializer = new JsonSerializer();
serializer.Serialize(writer, payload);
_ = stream.Seek(0, SeekOrigin.Begin);
var request = new PutObjectRequest
{
InputStream = stream,
BucketName = _options.Bucket,
ObjectKey = Name
};
var response = _obs.PutObject(request);
if (response.StatusCode >= HttpStatusCode.OK && response.StatusCode < HttpStatusCode.Ambiguous)
{
source.SetResult(VoidResult);
}
else
{
var exception = new Exception($"put object failed, response status is {response.StatusCode}");
exception.Data.Add("request", request);
exception.Data.Add("response", response);
source.SetException(exception);
}
}
catch (Exception exception)
{
source.SetException(exception);
}
});
return(source.Task);
}
public abstract Task Save(MemoryCardPayload payload);
