public async Task ReadStateAsync(string grainType, GrainReference grainId, IGrainState grainState)
{
try
{
var blobName = BlobStorageProvider.GetBlobName(grainType, grainId);
var blob = container.GetBlockBlobReference(blobName);
var exists = await blob.ExistsAsync();
if (!exists)
{
return;
}
var text = await blob.DownloadTextAsync();
if (string.IsNullOrWhiteSpace(text))
{
return;
}
var data = JsonConvert.DeserializeObject(text, grainState.GetType(), settings);
var dict = ((IGrainState)data).AsDictionary();
grainState.SetAll(dict);
grainState.Etag = blob.Properties.ETag;
}
catch (Exception ex)
{
Log.Error(0, ex.ToString());
}
}
public async Task ClearStateAsync(string grainType, GrainReference grainId, IGrainState grainState)
{
try
{
var blobName = BlobStorageProvider.GetBlobName(grainType, grainId);
var blob = container.GetBlockBlobReference(blobName);
await blob.DeleteIfExistsAsync();
}
catch (Exception ex)
{
Log.Error(0, ex.ToString());
}
}
public async Task WriteStateAsync(string grainType, GrainReference grainId, IGrainState grainState)
{
try
{
var blobName = BlobStorageProvider.GetBlobName(grainType, grainId);
var storedData = JsonConvert.SerializeObject(grainState.AsDictionary(), settings);
var blob = container.GetBlockBlobReference(blobName);
await blob.UploadTextAsync(storedData);
}
catch (Exception ex)
{
Log.Error(0, ex.ToString());
}
}
public async Task ClearStateAsync(string grainType, GrainReference grainId, IGrainState grainState)
{
try
{
var blobName = BlobStorageProvider.GetBlobName(grainType, grainId);
var blob = container.GetBlockBlobReference(blobName);
await
blob.DeleteIfExistsAsync(
DeleteSnapshotsOption.None,
AccessCondition.GenerateIfMatchCondition(grainState.Etag),
null,
null);
grainState.Etag = blob.Properties.ETag;
}
catch (Exception ex)
{
Log.Error(0, ex.ToString());
}
}
public async Task WriteStateAsync(string grainType, GrainReference grainId, IGrainState grainState)
{
try
{
var blobName = BlobStorageProvider.GetBlobName(grainType, grainId);
var storedData = JsonConvert.SerializeObject(grainState.AsDictionary(), settings);
var blob = container.GetBlockBlobReference(blobName);
await
blob.UploadTextAsync(
storedData,
Encoding.UTF8,
AccessCondition.GenerateIfMatchCondition(grainState.Etag),
null,
null);
grainState.Etag = blob.Properties.ETag;
}
catch (Exception ex)
{
Log.Error(0, ex.ToString());
}
}