/// <summary> Clear / Delete state data function for this storage provider. </summary>
/// <remarks>
/// If the <c>DeleteStateOnClear</c> is set to <c>true</c> then the table row
/// for this grain will be deleted / removed, otherwise the table row will be
/// cleared by overwriting with default / null values.
/// </remarks>
/// <see cref="IStorageProvider.ClearStateAsync"/>
public async Task ClearStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
if (tableDataManager == null)
{
throw new ArgumentException("GrainState-Table property not initialized");
}
string pk = GetKeyString(grainReference);
if (Log.IsVerbose3)
{
Log.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_WritingData, "Clearing: GrainType={0} Pk={1} Grainid={2} ETag={3} DeleteStateOnClear={4} from Table={5}", grainType, pk, grainReference, grainState.ETag, isDeleteStateOnClear, tableName);
}
var entity = new DynamicTableEntity(pk, grainType);
var record = new GrainStateRecord {
Entity = entity, ETag = grainState.ETag
};
string operation = "Clearing";
try
{
if (isDeleteStateOnClear)
{
operation = "Deleting";
await tableDataManager.Delete(record).ConfigureAwait(false);
}
else
{
await tableDataManager.Write(record).ConfigureAwait(false);
}
grainState.ETag = record.ETag; // Update in-memory data to the new ETag
}
catch (Exception exc)
{
Log.Error((int)AzureProviderErrorCode.AzureTableProvider_DeleteError, string.Format("Error {0}: GrainType={1} Grainid={2} ETag={3} from Table={4} Exception={5}",
operation, grainType, grainReference, grainState.ETag, tableName, exc.Message), exc);
throw;
}
}
internal void ConvertToStorageFormat(object grainState, GrainStateRecord entity)
{
int dataSize;
if (this.options.UseJson)
{
// http://james.newtonking.com/json/help/index.html?topic=html/T_Newtonsoft_Json_JsonConvert.htm
entity.StringState = JsonConvert.SerializeObject(grainState, this.jsonSettings);
dataSize = STRING_STATE_PROPERTY_NAME.Length + entity.StringState.Length;
if (this.logger.IsEnabled(LogLevel.Trace))
{
this.logger.Trace("Writing JSON data size = {0} for grain id = Partition={1} / Row={2}",
dataSize, entity.GrainReference, entity.GrainType);
}
}
else
{
// Convert to binary format
entity.BinaryState = this.serializationManager.SerializeToByteArray(grainState);
dataSize = BINARY_STATE_PROPERTY_NAME.Length + entity.BinaryState.Length;
if (this.logger.IsEnabled(LogLevel.Trace))
{
this.logger.Trace("Writing binary data size = {0} for grain id = Partition={1} / Row={2}",
dataSize, entity.GrainReference, entity.GrainType);
}
}
var pkSize = GRAIN_REFERENCE_PROPERTY_NAME.Length + entity.GrainReference.Length;
var rkSize = GRAIN_TYPE_PROPERTY_NAME.Length + entity.GrainType.Length;
var versionSize = ETAG_PROPERTY_NAME.Length + entity.ETag.ToString().Length;
if ((pkSize + rkSize + versionSize + dataSize) > MAX_DATA_SIZE)
{
var msg = string.Format("Data too large to write to DynamoDB table. Size={0} MaxSize={1}", dataSize, MAX_DATA_SIZE);
throw new ArgumentOutOfRangeException("GrainState.Size", msg);
}
}
/// <summary> Write state data function for this storage provider. </summary>
/// <see cref="IGrainStorage.WriteStateAsync"/>
public async Task WriteStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
if (tableDataManager == null)
{
throw new ArgumentException("GrainState-Table property not initialized");
}
string pk = GetKeyString(grainReference);
if (logger.IsEnabled(LogLevel.Trace))
{
logger.Trace((int)AzureProviderErrorCode.AzureTableProvider_WritingData, "Writing: GrainType={0} Pk={1} Grainid={2} ETag={3} to Table={4}", grainType, pk, grainReference, grainState.ETag, this.options.TableName);
}
var rowKey = AzureTableUtils.SanitizeTableProperty(grainType);
var entity = new DynamicTableEntity(pk, rowKey);
ConvertToStorageFormat(grainState.State, entity);
var record = new GrainStateRecord {
Entity = entity, ETag = grainState.ETag
};
try
{
await DoOptimisticUpdate(() => tableDataManager.Write(record), grainType, grainReference.GrainId, this.options.TableName, grainState.ETag).ConfigureAwait(false);
grainState.ETag = record.ETag;
grainState.RecordExists = true;
}
catch (Exception exc)
{
logger.Error((int)AzureProviderErrorCode.AzureTableProvider_WriteError,
$"Error Writing: GrainType={grainType} GrainId={grainReference.GrainId} ETag={grainState.ETag} to Table={this.options.TableName} Exception={exc.Message}", exc);
throw;
}
}
/// <summary> Write state data function for this storage provider. </summary>
/// <see cref="IStorageProvider.WriteStateAsync"/>
public async Task WriteStateAsync(string grainType, GrainReference grainReference, GrainState grainState)
{
if (tableDataManager == null)
{
throw new ArgumentException("GrainState-Table property not initialized");
}
string pk = GetKeyString(grainReference);
if (Log.IsVerbose3)
{
Log.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_WritingData, "Writing: GrainType={0} Pk={1} Grainid={2} ETag={3} to Table={4}", grainType, pk, grainReference, grainState.Etag, tableName);
}
var entity = new GrainStateEntity {
PartitionKey = pk, RowKey = grainType
};
ConvertToStorageFormat(grainState, entity);
var record = new GrainStateRecord {
Entity = entity, ETag = grainState.Etag
};
try
{
await tableDataManager.Write(record);
grainState.Etag = record.ETag;
}
catch (Exception exc)
{
Log.Error((int)AzureProviderErrorCode.AzureTableProvider_WriteError, string.Format("Error Writing: GrainType={0} Grainid={1} ETag={2} to Table={3} Exception={4}",
grainType, grainReference, grainState.Etag, tableName, exc.Message), exc);
throw;
}
}
/// <summary> Write state data function for this storage provider. </summary>
/// <see cref="IGrainStorage.WriteStateAsync{T}"/>
public async Task WriteStateAsync <T>(string grainType, GrainReference grainReference, IGrainState <T> grainState)
{
if (this.storage == null)
{
throw new ArgumentException("GrainState-Table property not initialized");
}
string partitionKey = GetKeyString(grainReference);
string rowKey = AWSUtils.ValidateDynamoDBRowKey(grainType);
var record = new GrainStateRecord {
GrainReference = partitionKey, GrainType = rowKey
};
try
{
ConvertToStorageFormat(grainState.State, record);
await WriteStateInternal(grainState, record);
}
catch (ConditionalCheckFailedException exc)
{
throw new InconsistentStateException($"Inconsistent grain state: {exc}");
}
catch (Exception exc)
{
this.logger.LogError(
(int)ErrorCode.StorageProviderBase,
exc,
"Error Writing: GrainType={GrainType} Grainid={GrainId} ETag={ETag} to Table={TableName}",
grainType,
grainReference,
grainState.ETag,
this.options.TableName);
throw;
}
}
public async Task WriteStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
var blobName = this.GetBlobNameString(grainType, grainReference);
var newETag = string.IsNullOrEmpty(grainState.ETag) ? 0 : int.Parse(grainState.ETag) + 1;
try
{
this._logger.LogTrace("Writing: GrainType={0} Grainid={1} ETag={2} to BlobName={3} in Container={4}",
grainType, grainReference, grainState.ETag, blobName, this._container);
var record = new GrainStateRecord
{
ETag = newETag,
State = grainState.State
};
using (var stream = new MemoryStream(this.ConvertToStorageFormat(record)))
{
await this._storage.UploadBlob(this._container, blobName, stream, contentType : "application/json");
}
grainState.ETag = newETag.ToString();
this._logger.LogTrace("Wrote: GrainType={0} Grainid={1} ETag={2} to BlobName={3} in Container={4}",
grainType, grainReference, grainState.ETag, blobName, this._container);
}
catch (Exception ex)
{
this._logger.LogError(ex,
"Error writing: GrainType={0} Grainid={1} ETag={2} from BlobName={3} in Container={4} Exception={5}",
grainType, grainReference, grainState.ETag, blobName, this._container, ex.Message);
throw;
}
}
internal void ConvertToStorageFormat(object grainState, GrainStateRecord entity)
{
int dataSize;
if (useJsonFormat)
{
// http://james.newtonking.com/json/help/index.html?topic=html/T_Newtonsoft_Json_JsonConvert.htm
entity.StringState = JsonConvert.SerializeObject(grainState, jsonSettings);
dataSize = STRING_STATE_PROPERTY_NAME.Length + entity.StringState.Length;
if (Log.IsVerbose3) Log.Verbose3("Writing JSON data size = {0} for grain id = Partition={1} / Row={2}",
dataSize, entity.GrainReference, entity.GrainType);
}
else
{
// Convert to binary format
entity.BinaryState = SerializationManager.SerializeToByteArray(grainState);
dataSize = BINARY_STATE_PROPERTY_NAME.Length + entity.BinaryState.Length;
if (Log.IsVerbose3) Log.Verbose3("Writing binary data size = {0} for grain id = Partition={1} / Row={2}",
dataSize, entity.GrainReference, entity.GrainType);
}
var pkSize = GRAIN_REFERENCE_PROPERTY_NAME.Length + entity.GrainReference.Length;
var rkSize = GRAIN_TYPE_PROPERTY_NAME.Length + entity.GrainType.Length;
var versionSize = ETAG_PROPERTY_NAME.Length + entity.ETag.ToString().Length;
if ((pkSize + rkSize + versionSize + dataSize) > MAX_DATA_SIZE)
{
var msg = string.Format("Data too large to write to DynamoDB table. Size={0} MaxSize={1}", dataSize, MAX_DATA_SIZE);
throw new ArgumentOutOfRangeException("GrainState.Size", msg);
}
}
internal object ConvertFromStorageFormat(GrainStateRecord entity)
{
var binaryData = entity.BinaryState;
var stringData = entity.StringState;
object dataValue = null;
try
{
if (binaryData?.Length > 0)
{
// Rehydrate
dataValue = SerializationManager.DeserializeFromByteArray<object>(binaryData);
}
else if (!string.IsNullOrEmpty(stringData))
{
dataValue = JsonConvert.DeserializeObject<object>(stringData, jsonSettings);
}
// Else, no data found
}
catch (Exception exc)
{
var sb = new StringBuilder();
if (binaryData.Length > 0)
{
sb.AppendFormat("Unable to convert from storage format GrainStateEntity.Data={0}", binaryData);
}
else if (!string.IsNullOrEmpty(stringData))
{
sb.AppendFormat("Unable to convert from storage format GrainStateEntity.StringData={0}", stringData);
}
if (dataValue != null)
{
sb.AppendFormat("Data Value={0} Type={1}", dataValue, dataValue.GetType());
}
Log.Error(0, sb.ToString(), exc);
throw new AggregateException(sb.ToString(), exc);
}
return dataValue;
}
/// <summary> Clear / Delete state data function for this storage provider. </summary>
/// <remarks>
/// If the <c>DeleteStateOnClear</c> is set to <c>true</c> then the table row
/// for this grain will be deleted / removed, otherwise the table row will be
/// cleared by overwriting with default / null values.
/// </remarks>
/// <see cref="IStorageProvider.ClearStateAsync"/>
public async Task ClearStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
if (storage == null) throw new ArgumentException("GrainState-Table property not initialized");
string partitionKey = GetKeyString(grainReference);
if (Log.IsVerbose3) Log.Verbose3(ErrorCode.StorageProviderBase, "Clearing: GrainType={0} Pk={1} Grainid={2} ETag={3} DeleteStateOnClear={4} from Table={5}", grainType, partitionKey, grainReference, grainState.ETag, isDeleteStateOnClear, tableName);
string rowKey = AWSUtils.ValidateDynamoDBRowKey(grainType);
var record = new GrainStateRecord { GrainReference = partitionKey, ETag = string.IsNullOrWhiteSpace(grainState.ETag) ? 0 : int.Parse(grainState.ETag), GrainType = rowKey };
var operation = "Clearing";
try
{
if (isDeleteStateOnClear)
{
operation = "Deleting";
var keys = new Dictionary<string, AttributeValue>();
keys.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
keys.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
await storage.DeleteEntryAsync(tableName, keys).ConfigureAwait(false);
grainState.ETag = string.Empty;
}
else
{
await WriteStateInternal(grainState, record, true);
}
}
catch (Exception exc)
{
Log.Error(ErrorCode.StorageProviderBase, string.Format("Error {0}: GrainType={1} Grainid={2} ETag={3} from Table={4} Exception={5}",
operation, grainType, grainReference, grainState.ETag, tableName, exc.Message), exc);
throw;
}
}
private async Task WriteStateInternal(IGrainState grainState, GrainStateRecord record, bool clear = false)
{
var fields = new Dictionary<string, AttributeValue>();
if (record.BinaryState != null && record.BinaryState.Length > 0)
{
fields.Add(BINARY_STATE_PROPERTY_NAME, new AttributeValue { B = new MemoryStream(record.BinaryState) });
}
else if (!string.IsNullOrWhiteSpace(record.StringState))
{
fields.Add(STRING_STATE_PROPERTY_NAME, new AttributeValue(record.StringState));
}
int newEtag = 0;
if (clear)
{
fields.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
fields.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
int currentEtag = 0;
int.TryParse(grainState.ETag, out currentEtag);
newEtag = currentEtag;
fields.Add(ETAG_PROPERTY_NAME, new AttributeValue { N = newEtag++.ToString() });
await storage.PutEntryAsync(tableName, fields).ConfigureAwait(false);
}
else if (string.IsNullOrWhiteSpace(grainState.ETag))
{
fields.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
fields.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
fields.Add(ETAG_PROPERTY_NAME, new AttributeValue { N = "0" });
var expression = $"attribute_not_exists({GRAIN_REFERENCE_PROPERTY_NAME}) AND attribute_not_exists({GRAIN_TYPE_PROPERTY_NAME})";
await storage.PutEntryAsync(tableName, fields, expression).ConfigureAwait(false);
}
else
{
var keys = new Dictionary<string, AttributeValue>();
keys.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
keys.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
int currentEtag = 0;
int.TryParse(grainState.ETag, out currentEtag);
newEtag = currentEtag;
newEtag++;
fields.Add(ETAG_PROPERTY_NAME, new AttributeValue { N = newEtag.ToString() });
var conditionalValues = new Dictionary<string, AttributeValue> { { CURRENT_ETAG_ALIAS, new AttributeValue { N = currentEtag.ToString() } } };
var expression = $"{ETAG_PROPERTY_NAME} = {CURRENT_ETAG_ALIAS}";
await storage.UpsertEntryAsync(tableName, keys, fields, expression, conditionalValues).ConfigureAwait(false);
}
grainState.ETag = newEtag.ToString();
}
/// <summary> Write state data function for this storage provider. </summary>
/// <see cref="IStorageProvider.WriteStateAsync"/>
public async Task WriteStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
if (storage == null) throw new ArgumentException("GrainState-Table property not initialized");
string partitionKey = GetKeyString(grainReference);
string rowKey = AWSUtils.ValidateDynamoDBRowKey(grainType);
var record = new GrainStateRecord { GrainReference = partitionKey, GrainType = rowKey };
try
{
ConvertToStorageFormat(grainState.State, record);
await WriteStateInternal(grainState, record);
}
catch (ConditionalCheckFailedException exc)
{
throw new InconsistentStateException("Invalid grain state", exc);
}
catch (Exception exc)
{
Log.Error(ErrorCode.StorageProviderBase, string.Format("Error Writing: GrainType={0} Grainid={1} ETag={2} to Table={3} Exception={4}",
grainType, grainReference, grainState.ETag, tableName, exc.Message), exc);
throw;
}
}
/// <summary> Write state data function for this storage provider. </summary>
/// <see cref="IStorageProvider.WriteStateAsync"/>
public async Task WriteStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
if (tableDataManager == null) throw new ArgumentException("GrainState-Table property not initialized");
string pk = GetKeyString(grainReference);
if (Log.IsVerbose3)
Log.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_WritingData, "Writing: GrainType={0} Pk={1} Grainid={2} ETag={3} to Table={4}", grainType, pk, grainReference, grainState.Etag, tableName);
var entity = new GrainStateEntity { PartitionKey = pk, RowKey = grainType };
ConvertToStorageFormat(grainState, entity);
var record = new GrainStateRecord { Entity = entity, ETag = grainState.Etag };
try
{
await tableDataManager.Write(record);
grainState.Etag = record.ETag;
}
catch (Exception exc)
{
Log.Error((int)AzureProviderErrorCode.AzureTableProvider_WriteError, string.Format("Error Writing: GrainType={0} Grainid={1} ETag={2} to Table={3} Exception={4}",
grainType, grainReference, grainState.Etag, tableName, exc.Message), exc);
throw;
}
}
private async Task WriteStateInternal(IGrainState grainState, GrainStateRecord record, bool clear = false)
{
var fields = new Dictionary <string, AttributeValue>();
if (this.options.TimeToLive.HasValue)
{
fields.Add(GRAIN_TTL_PROPERTY_NAME, new AttributeValue {
N = ((DateTimeOffset)DateTime.UtcNow.Add(this.options.TimeToLive.Value)).ToUnixTimeSeconds().ToString()
});
}
if (record.BinaryState != null && record.BinaryState.Length > 0)
{
fields.Add(BINARY_STATE_PROPERTY_NAME, new AttributeValue {
B = new MemoryStream(record.BinaryState)
});
}
else if (!string.IsNullOrWhiteSpace(record.StringState))
{
fields.Add(STRING_STATE_PROPERTY_NAME, new AttributeValue(record.StringState));
}
int newEtag = 0;
if (clear)
{
fields.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
fields.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
int currentEtag = 0;
int.TryParse(grainState.ETag, out currentEtag);
newEtag = currentEtag;
fields.Add(ETAG_PROPERTY_NAME, new AttributeValue {
N = newEtag++.ToString()
});
await this.storage.PutEntryAsync(this.options.TableName, fields).ConfigureAwait(false);
}
else if (string.IsNullOrWhiteSpace(grainState.ETag))
{
fields.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
fields.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
fields.Add(ETAG_PROPERTY_NAME, new AttributeValue {
N = "0"
});
var expression = $"attribute_not_exists({GRAIN_REFERENCE_PROPERTY_NAME}) AND attribute_not_exists({GRAIN_TYPE_PROPERTY_NAME})";
await this.storage.PutEntryAsync(this.options.TableName, fields, expression).ConfigureAwait(false);
}
else
{
var keys = new Dictionary <string, AttributeValue>();
keys.Add(GRAIN_REFERENCE_PROPERTY_NAME, new AttributeValue(record.GrainReference));
keys.Add(GRAIN_TYPE_PROPERTY_NAME, new AttributeValue(record.GrainType));
int currentEtag = 0;
int.TryParse(grainState.ETag, out currentEtag);
newEtag = currentEtag;
newEtag++;
fields.Add(ETAG_PROPERTY_NAME, new AttributeValue {
N = newEtag.ToString()
});
var conditionalValues = new Dictionary <string, AttributeValue> {
{ CURRENT_ETAG_ALIAS, new AttributeValue {
N = currentEtag.ToString()
} }
};
var expression = $"{ETAG_PROPERTY_NAME} = {CURRENT_ETAG_ALIAS}";
await this.storage.UpsertEntryAsync(this.options.TableName, keys, fields, expression, conditionalValues).ConfigureAwait(false);
}
grainState.ETag = newEtag.ToString();
}
/// <summary> Clear / Delete state data function for this storage provider. </summary>
/// <remarks>
/// If the <c>DeleteStateOnClear</c> is set to <c>true</c> then the table row
/// for this grain will be deleted / removed, otherwise the table row will be
/// cleared by overwriting with default / null values.
/// </remarks>
/// <see cref="IStorageProvider.ClearStateAsync"/>
public async Task ClearStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
{
if (tableDataManager == null) throw new ArgumentException("GrainState-Table property not initialized");
string pk = GetKeyString(grainReference);
if (Log.IsVerbose3) Log.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_WritingData, "Clearing: GrainType={0} Pk={1} Grainid={2} ETag={3} DeleteStateOnClear={4} from Table={5}", grainType, pk, grainReference, grainState.Etag, isDeleteStateOnClear, tableName);
var entity = new GrainStateEntity { PartitionKey = pk, RowKey = grainType };
var record = new GrainStateRecord { Entity = entity, ETag = grainState.Etag };
string operation = "Clearing";
try
{
if (isDeleteStateOnClear)
{
operation = "Deleting";
await tableDataManager.Delete(record);
}
else
{
await tableDataManager.Write(record);
}
grainState.Etag = record.ETag; // Update in-memory data to the new ETag
}
catch (Exception exc)
{
Log.Error((int)AzureProviderErrorCode.AzureTableProvider_DeleteError, string.Format("Error {0}: GrainType={1} Grainid={2} ETag={3} from Table={4} Exception={5}",
operation, grainType, grainReference, grainState.Etag, tableName, exc.Message), exc);
throw;
}
}
public async Task Delete(GrainStateRecord record)
{
GrainStateEntity entity = record.Entity;
if (logger.IsVerbose3) logger.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_Storage_Writing, "Deleting: PartitionKey={0} RowKey={1} from Table={2} with ETag={3}", entity.PartitionKey, entity.RowKey, TableName, record.ETag);
await tableManager.DeleteTableEntryAsync(entity, record.ETag);
record.ETag = null;
}
public async Task Write(GrainStateRecord record)
{
GrainStateEntity entity = record.Entity;
if (logger.IsVerbose3) logger.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_Storage_Writing, "Writing: PartitionKey={0} RowKey={1} to Table={2} with ETag={3}", entity.PartitionKey, entity.RowKey, TableName, record.ETag);
string eTag = String.IsNullOrEmpty(record.ETag) ?
await tableManager.CreateTableEntryAsync(record.Entity) :
await tableManager.UpdateTableEntryAsync(entity, record.ETag);
record.ETag = eTag;
}
public async Task<GrainStateRecord> Read(string partitionKey, string rowKey)
{
if (logger.IsVerbose3) logger.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_Storage_Reading, "Reading: PartitionKey={0} RowKey={1} from Table={2}", partitionKey, rowKey, TableName);
try
{
Tuple<GrainStateEntity, string> data = await tableManager.ReadSingleTableEntryAsync(partitionKey, rowKey);
if (data == null || data.Item1 == null)
{
if (logger.IsVerbose2) logger.Verbose2((int)AzureProviderErrorCode.AzureTableProvider_DataNotFound, "DataNotFound reading: PartitionKey={0} RowKey={1} from Table={2}", partitionKey, rowKey, TableName);
return null;
}
GrainStateEntity stateEntity = data.Item1;
var record = new GrainStateRecord { Entity = stateEntity, ETag = data.Item2 };
if (logger.IsVerbose3) logger.Verbose3((int)AzureProviderErrorCode.AzureTableProvider_Storage_DataRead, "Read: PartitionKey={0} RowKey={1} from Table={2} with ETag={3}", stateEntity.PartitionKey, stateEntity.RowKey, TableName, record.ETag);
return record;
}
catch (Exception exc)
{
if (AzureStorageUtils.TableStorageDataNotFound(exc))
{
if (logger.IsVerbose2) logger.Verbose2((int)AzureProviderErrorCode.AzureTableProvider_DataNotFound, "DataNotFound reading (exception): PartitionKey={0} RowKey={1} from Table={2} Exception={3}", partitionKey, rowKey, TableName, TraceLogger.PrintException(exc));
return null; // No data
}
throw;
}
}
