protected override void DoSave(IConcurrencyControlContext context, T obj)
{
if (string.IsNullOrWhiteSpace(context.ObjectId))
{
throw new ArgumentNullException("context.ObjectId", "ObjectId cannot be null or empty");
}
if (context is OptimisticConcurrencyContext)
{
CloudBlob blob = this.Container.GetBlobReference(context.ObjectId);
blob.Properties.ContentType = "application/json";
var blobRequestOptions = new BlobRequestOptions()
{
AccessCondition = (context as OptimisticConcurrencyContext).AccessCondition
};
blob.UploadText(new JavaScriptSerializer().Serialize(obj), Encoding.Default, blobRequestOptions);
}
else if (context is PessimisticConcurrencyContext)
{
if (string.IsNullOrWhiteSpace((context as PessimisticConcurrencyContext).LockId))
{
throw new ArgumentNullException("context.LockId", "LockId cannot be null or empty");
}
var blobProperties = new BlobProperties();
blobProperties.ContentType = "application/json";
var updateText = BlobRequest.Put(
this.GetUri(context.ObjectId),
BlobRequestTimeout,
blobProperties,
BlobType.BlockBlob,
(context as PessimisticConcurrencyContext).LockId,
0);
using (var stream = new StreamWriter(updateText.GetRequestStream(), Encoding.Default))
{
stream.Write(new JavaScriptSerializer().Serialize(obj));
}
this.Account.Credentials.SignRequest(updateText);
using (var response = updateText.GetResponse())
{
if (response is HttpWebResponse &&
!HttpStatusCode.Created.Equals((response as HttpWebResponse).StatusCode))
{
TraceHelper.TraceError("Error writing leased blob '{0}': {1}", context.ObjectId, (response as HttpWebResponse).StatusDescription);
throw new InvalidOperationException((response as HttpWebResponse).StatusDescription);
}
}
}
else
{
throw new InvalidOperationException("IConcurrencyControlContext implementation cannot be handled");
}
}
protected virtual void OptimisticControlContextWriteStrategy(IConcurrencyControlContext context, T obj)
{
CloudBlob blob = this.Container.GetBlobReference(context.ObjectId);
var blobRequestOptions = new BlobRequestOptions()
{
AccessCondition = (context as OptimisticConcurrencyContext).AccessCondition
};
this.WriteObject(blob, blobRequestOptions, obj);
}
protected virtual void PessimisticControlContextWriteStrategy(IConcurrencyControlContext context, T obj)
{
string lockId = (context as PessimisticConcurrencyContext).LockId;
string objId = (context as PessimisticConcurrencyContext).ObjectId;
if (string.IsNullOrWhiteSpace(lockId))
{
throw new ArgumentNullException("context.LockId", "LockId cannot be null or empty");
}
CloudBlockBlob blob = this.Container.GetBlockBlobReference(objId);
var accessCondition = AccessCondition.GenerateLeaseCondition(lockId);
this.WriteOject(blob, null, accessCondition, obj);
}
public virtual void Save(IConcurrencyControlContext context, T obj)
{
if (string.IsNullOrWhiteSpace(context.ObjectId))
{
throw new ArgumentNullException("context.ObjectId", "ObjectId cannot be null or empty");
}
Action <IConcurrencyControlContext, T> writeStrategy;
if (!this._writingStrategies.TryGetValue(context.GetType(), out writeStrategy))
{
throw new InvalidOperationException("IConcurrencyControlContext implementation not registered");
}
this.StorageRetryPolicy.ExecuteAction(() => writeStrategy(context, obj));
}
protected virtual void PessimisticControlContextWriteStrategy(IConcurrencyControlContext context, T obj)
{
if (string.IsNullOrWhiteSpace((context as PessimisticConcurrencyContext).LockId))
{
throw new ArgumentNullException("context.LockId", "LockId cannot be null or empty");
}
var blobProperties = new BlobProperties();
var binarizedObject = this.BinarizeObjectForStreaming(blobProperties, obj);
var updateRequest = BlobRequest.Put(
this.GetUri(context.ObjectId),
BlobRequestTimeout,
blobProperties,
BlobType.BlockBlob,
(context as PessimisticConcurrencyContext).LockId,
0);
using (var writer = new BinaryWriter(updateRequest.GetRequestStream(), Encoding.Default))
{
writer.Write(binarizedObject);
}
this.Account.Credentials.SignRequest(updateRequest);
using (var response = updateRequest.GetResponse())
{
if (response is HttpWebResponse &&
!HttpStatusCode.Created.Equals((response as HttpWebResponse).StatusCode))
{
this._logger.LogError("Error writing leased blob '{0}': {1}", context.ObjectId, (response as HttpWebResponse).StatusDescription);
throw new InvalidOperationException((response as HttpWebResponse).StatusDescription);
}
}
}
protected virtual void OptimisticControlContextWriteStrategy(IConcurrencyControlContext context, T obj)
{
CloudBlockBlob blob = this.Container.GetBlockBlobReference(context.ObjectId);
this.WriteOject(blob, null, (context as OptimisticConcurrencyContext).AccessCondition, obj);
}
protected abstract void DoSave(IConcurrencyControlContext context, T obj);
public virtual void Save(IConcurrencyControlContext context, T obj)
{
this.StorageRetryPolicy.ExecuteAction(() => this.DoSave(context, obj));
}
protected override void DoSave(IConcurrencyControlContext context, byte[] obj)
{
throw new NotImplementedException();
}
