private void ProcessResults(IList <FileHeader> results, SaveChangesData data)
{
for (var i = 0; i < results.Count; i++)
{
var result = results[i];
var savedEntity = data.Entities[i];
object existingEntity;
if (entitiesByKey.TryGetValue(savedEntity, out existingEntity) == false)
{
continue;
}
var existingFileHeader = (FileHeader)existingEntity;
existingFileHeader.Metadata = result.Metadata;
existingFileHeader.OriginalMetadata = (RavenJObject)result.Metadata.CloneToken();
existingFileHeader.Refresh();
if (savedEntity != result.FullPath)
{
if (!entitiesByKey.ContainsKey(result.FullPath))
{
existingFileHeader.FullPath = result.FullPath;
entitiesByKey.Add(result.FullPath, existingFileHeader);
entitiesByKey.Remove(savedEntity);
}
}
AddToCache(existingFileHeader.FullPath, existingFileHeader);
}
}
protected Dictionary <string, SaveChangesData> GetChangesToSavePerShard(SaveChangesData data)
{
var saveChangesPerShard = new Dictionary <string, SaveChangesData>();
foreach (var deferredCommands in deferredCommandsByShard)
{
var saveChangesData = saveChangesPerShard.GetOrAdd(deferredCommands.Key);
saveChangesData.DeferredCommandsCount += deferredCommands.Value.Count;
saveChangesData.Commands.AddRange(deferredCommands.Value);
}
deferredCommandsByShard.Clear();
for (int index = 0; index < data.Entities.Count; index++)
{
var entity = data.Entities[index];
var metadata = GetMetadataFor(entity);
var shardId = metadata.Value <string>(Constants.RavenShardId);
if (shardId == null)
{
throw new InvalidOperationException("Cannot save a document when the shard id isn't defined. Missing Raven-Shard-Id in the metadata");
}
var shardSaveChangesData = saveChangesPerShard.GetOrAdd(shardId);
shardSaveChangesData.Entities.Add(entity);
shardSaveChangesData.Commands.Add(data.Commands[index]);
}
return(saveChangesPerShard);
}
public async Task SaveChangesAsync()
{
var changes = new SaveChangesData();
var operationsToExecute = registeredOperations;
registeredOperations = new Queue<IFilesOperation>();
PrepareForSaveChanges(changes, operationsToExecute.ToList());
try
{
var results = new List<FileHeader>();
foreach (var op in changes.Operations)
{
AssertConflictsAreNotAffectingOperation(op);
var operationResult = await op.Execute((IAsyncFilesSession)this).ConfigureAwait(false);
if (operationResult != null)
results.Add(operationResult);
}
ProcessResults(results, changes);
}
finally
{
deletedEntities.Clear();
}
}
/// <summary>
/// Prepares for save changes.
/// </summary>
/// <returns></returns>
protected SaveChangesData PrepareForSaveChanges()
{
var result = new SaveChangesData
{
Entities = new List <object>(),
Commands = new List <ICommandData>()
};
TryEnlistInAmbientTransaction();
DocumentMetadata value = null;
foreach (var key in (from deletedEntity in deletedEntities
where entitiesAndMetadata.TryGetValue(deletedEntity, out value)
select value.Key))
{
Guid? etag = null;
object existingEntity;
DocumentMetadata metadata = null;
if (entitiesByKey.TryGetValue(key, out existingEntity))
{
if (entitiesAndMetadata.TryGetValue(existingEntity, out metadata))
{
etag = metadata.ETag;
}
entitiesAndMetadata.Remove(existingEntity);
entitiesByKey.Remove(key);
}
etag = UseOptimisticConcurrency ? etag : null;
result.Entities.Add(existingEntity);
foreach (var deleteListener in deleteListeners)
{
deleteListener.BeforeDelete(key, existingEntity, metadata != null ? metadata.Metadata : null);
}
result.Commands.Add(new DeleteCommandData
{
Etag = etag,
Key = key,
});
}
deletedEntities.Clear();
foreach (var entity in entitiesAndMetadata.Where(pair => EntityChanged(pair.Key, pair.Value)))
{
foreach (var documentStoreListener in storeListeners)
{
documentStoreListener.BeforeStore(entity.Value.Key, entity.Key, entity.Value.Metadata);
}
result.Entities.Add(entity.Key);
if (entity.Value.Key != null)
{
entitiesByKey.Remove(entity.Value.Key);
}
result.Commands.Add(CreatePutEntityCommand(entity.Key, entity.Value));
}
return(result);
}
private void LogBatch(SaveChangesData data)
{
Debug.WriteLine(string.Format("Saving {0} changes to {1}", data.Commands.Count, StoreIdentifier));
foreach (var commandData in data.Commands)
{
Debug.WriteLine(string.Format("\t{0} {1}", commandData.Method, commandData.Key));
}
}
private void PrepareForDeletion(SaveChangesData changes, IEnumerable <IFilesOperation> operations)
{
var deleteOperations = operations.OfType <DeleteFileOperation>().ToList();
foreach (var op in deleteOperations)
{
changes.Operations.Add(op);
deletedEntities.Add(op.Filename);
}
}
private void PrepareForUpdate(SaveChangesData changes, IEnumerable <IFilesOperation> operations)
{
foreach (var key in entitiesByKey.Keys)
{
var fileHeader = entitiesByKey[key] as FileHeader;
if (EntityChanged(fileHeader) && !UploadRegisteredForFile(fileHeader.FullPath, operations))
{
changes.Operations.Add(new UpdateMetadataOperation(this, fileHeader, fileHeader.Metadata));
changes.Entities.Add(fileHeader.FullPath);
}
}
}
private void PrepareForUpdate(SaveChangesData changes, List<IFilesOperation> operations)
{
foreach(var key in entitiesByKey.Keys)
{
var fileHeader = entitiesByKey[key];
if (EntityChanged(fileHeader) && !UploadRegisteredForFile(fileHeader.FullPath, operations))
{
changes.Operations.Add(new UpdateMetadataOperation(this, fileHeader, fileHeader.Metadata, UseOptimisticConcurrency ? fileHeader.Etag : null));
changes.Entities.Add(fileHeader.FullPath);
}
}
}
private void LogBatch(SaveChangesData data)
{
log.Debug(() =>
{
var sb = new StringBuilder()
.AppendFormat("Saving {0} changes to {1}", data.Commands.Count, StoreIdentifier)
.AppendLine();
foreach (var commandData in data.Commands)
{
sb.AppendFormat("\t{0} {1}", commandData.Method, commandData.Key).AppendLine();
}
return(sb.ToString());
});
}
private void PrepareForSaveChanges(SaveChangesData changes, List<IFilesOperation> operations)
{
PrepareForDeletion(changes, operations);
PrepareForUpdate(changes, operations);
operations.RemoveAll(x => x.GetType() == typeof(DeleteFileOperation) || x.GetType() == typeof(DeleteByQueryOperation));
// all other operations
foreach (var op in operations)
{
changes.Entities.Add(op.FileName);
changes.Operations.Add(op);
}
}
/// <summary>
/// Prepares for save changes.
/// </summary>
/// <returns></returns>
protected SaveChangesData PrepareForSaveChanges()
{
cachedJsonDocs.Clear();
var result = new SaveChangesData
{
Entities = new List <object>(),
Commands = new List <ICommandData>()
};
TryEnlistInAmbientTransaction();
PrepareForEntitiesDeletion(result);
PrepareForEntitiesPuts(result);
return(result);
}
private void PrepareForEntitiesPuts(SaveChangesData result)
{
foreach (var entity in entitiesAndMetadata.Where(pair => EntityChanged(pair.Key, pair.Value)).ToArray())
{
foreach (var documentStoreListener in listeners.StoreListeners)
{
if (documentStoreListener.BeforeStore(entity.Value.Key, entity.Key, entity.Value.Metadata, entity.Value.OriginalValue))
{
cachedJsonDocs.Remove(entity.Key);
}
}
result.Entities.Add(entity.Key);
if (entity.Value.Key != null)
{
entitiesByKey.Remove(entity.Value.Key);
}
result.Commands.Add(CreatePutEntityCommand(entity.Key, entity.Value));
}
}
private void PrepareForEntitiesDeletion(SaveChangesData result)
{
DocumentMetadata value = null;
var keysToDelete = (from deletedEntity in deletedEntities
where entitiesAndMetadata.TryGetValue(deletedEntity, out value)
// skip deleting read only entities
where !value.OriginalMetadata.ContainsKey(Constants.RavenReadOnly) ||
!value.OriginalMetadata.Value <bool>(Constants.RavenReadOnly)
select value.Key).ToList();
foreach (var key in keysToDelete)
{
Guid? etag = null;
object existingEntity;
DocumentMetadata metadata = null;
if (entitiesByKey.TryGetValue(key, out existingEntity))
{
if (entitiesAndMetadata.TryGetValue(existingEntity, out metadata))
{
etag = metadata.ETag;
}
entitiesAndMetadata.Remove(existingEntity);
entitiesByKey.Remove(key);
}
etag = UseOptimisticConcurrency ? etag : null;
result.Entities.Add(existingEntity);
foreach (var deleteListener in listeners.DeleteListeners)
{
deleteListener.BeforeDelete(key, existingEntity, metadata != null ? metadata.Metadata : null);
}
result.Commands.Add(new DeleteCommandData
{
Etag = etag,
Key = key,
});
}
deletedEntities.Clear();
}
/// <summary>
/// Updates the batch results.
/// </summary>
protected void UpdateBatchResults(IList <BatchResult> batchResults, SaveChangesData saveChangesData)
{
for (var i = saveChangesData.DeferredCommandsCount; i < batchResults.Count; i++)
{
var batchResult = batchResults[i];
if (batchResult.Method != "PUT")
{
continue;
}
var entity = saveChangesData.Entities[i - saveChangesData.DeferredCommandsCount];
DocumentMetadata documentMetadata;
if (entitiesAndMetadata.TryGetValue(entity, out documentMetadata) == false)
{
continue;
}
batchResult.Metadata["@etag"] = new RavenJValue(batchResult.Etag.ToString());
entitiesByKey[batchResult.Key] = entity;
documentMetadata.ETag = batchResult.Etag;
documentMetadata.Key = batchResult.Key;
documentMetadata.OriginalMetadata = (RavenJObject)batchResult.Metadata.CloneToken();
documentMetadata.Metadata = batchResult.Metadata;
documentMetadata.OriginalValue = ConvertEntityToJson(entity, documentMetadata.Metadata);
TrySetIdentity(entity, batchResult.Key);
foreach (var documentStoreListener in listeners.StoreListeners)
{
documentStoreListener.AfterStore(batchResult.Key, entity, batchResult.Metadata);
}
}
var lastPut = batchResults.LastOrDefault(x => x.Method == "PUT");
if (lastPut == null)
{
return;
}
documentStore.UpdateLastWrittenEtag(lastPut.Etag);
}
/// <summary>
/// Prepares for save changes.
/// </summary>
/// <returns></returns>
protected SaveChangesData PrepareForSaveChanges()
{
cachedJsonDocs.Clear();
var result = new SaveChangesData
{
Entities = new List <object>(),
Commands = new List <ICommandData>(deferedCommands),
DeferredCommandsCount = deferedCommands.Count
};
deferedCommands.Clear();
#if !SILVERLIGHT
if (documentStore.EnlistInDistributedTransactions)
{
TryEnlistInAmbientTransaction();
}
#endif
PrepareForEntitiesDeletion(result);
PrepareForEntitiesPuts(result);
return(result);
}
protected Dictionary <string, SaveChangesData> GetChangesToSavePerShard(SaveChangesData data)
{
var saveChangesPerShard = new Dictionary <string, SaveChangesData>();
foreach (var deferredCommands in deferredCommandsByShard)
{
var saveChangesData = saveChangesPerShard.GetOrAdd(deferredCommands.Key);
saveChangesData.DeferredCommandsCount += deferredCommands.Value.Count;
saveChangesData.Commands.AddRange(deferredCommands.Value);
}
deferredCommandsByShard.Clear();
for (int index = 0; index < data.Entities.Count; index++)
{
var entity = data.Entities[index];
var metadata = GetMetadataFor(entity);
var shardId = metadata.Value <string>(Constants.RavenShardId);
var shardSaveChangesData = saveChangesPerShard.GetOrAdd(shardId);
shardSaveChangesData.Entities.Add(entity);
shardSaveChangesData.Commands.Add(data.Commands[index]);
}
return(saveChangesPerShard);
}
protected async Task <Dictionary <string, SaveChangesData> > GetChangesToSavePerShardAsync(SaveChangesData data)
{
var saveChangesPerShard = CreateSaveChangesBatchPerShardFromDeferredCommands();
for (int index = 0; index < data.Entities.Count; index++)
{
var entity = data.Entities[index];
var metadata = await GetMetadataForAsync(entity).ConfigureAwait(false);
var shardId = metadata.Value <string>(Constants.RavenShardId);
if (shardId == null)
{
throw new InvalidOperationException("Cannot save a document when the shard id isn't defined. Missing Raven-Shard-Id in the metadata");
}
var shardSaveChangesData = saveChangesPerShard.GetOrAdd(shardId);
shardSaveChangesData.Entities.Add(entity);
shardSaveChangesData.Commands.Add(data.Commands[index]);
}
return(saveChangesPerShard);
}
private void ProcessResults(IList<FileHeader> results, SaveChangesData data)
{
for (var i = 0; i < results.Count; i++)
{
var result = results[i];
var savedEntity = data.Entities[i];
FileHeader existingEntity;
if (entitiesByKey.TryGetValue(savedEntity, out existingEntity) == false)
{
var operation = data.Operations[i];
if (operation is UploadFileOperation || operation is RenameFileOperation)
{
AddToCache(result.Name, result);
}
continue;
}
var existingFileHeader = existingEntity;
existingFileHeader.Metadata = result.Metadata;
existingFileHeader.OriginalMetadata = (RavenJObject)result.Metadata.CloneToken();
existingFileHeader.Refresh();
if (savedEntity != result.FullPath)
{
if (!entitiesByKey.ContainsKey(result.FullPath))
{
existingFileHeader.FullPath = result.FullPath;
entitiesByKey.Add(result.FullPath, existingFileHeader);
entitiesByKey.Remove(savedEntity);
}
}
AddToCache(existingFileHeader.FullPath, existingFileHeader);
}
}
private void PrepareForUpdate(SaveChangesData changes, IEnumerable<IFilesOperation> operations)
{
foreach( var key in entitiesByKey.Keys)
{
var fileHeader = entitiesByKey[key] as FileHeader;
if (EntityChanged(fileHeader) && !UploadRegisteredForFile(fileHeader.FullPath, operations))
{
changes.Operations.Add(new UpdateMetadataOperation(this, fileHeader, fileHeader.Metadata));
changes.Entities.Add(fileHeader.FullPath);
}
}
}
private void PrepareForDeletion(SaveChangesData changes, List<IFilesOperation> operations)
{
var deleteOperations = operations.OfType<DeleteFileOperation>().ToList();
foreach (var op in deleteOperations)
{
changes.Operations.Add(op);
deletedEntities.Add(op.FileName);
}
var deleteByQueryOperations = operations.OfType<DeleteByQueryOperation>().ToList();
foreach (var op in deleteByQueryOperations)
{
changes.Operations.Add(op);
}
}
