public override async Task <AppendResp> Append( IAsyncStreamReader <AppendReq> requestStream, ServerCallContext context) { if (!await requestStream.MoveNext().ConfigureAwait(false)) { throw new InvalidOperationException(); } if (requestStream.Current.ContentCase != AppendReq.ContentOneofCase.Options) { throw new InvalidOperationException(); } var options = requestStream.Current.Options; var streamName = options.StreamName; var expectedVersion = options.ExpectedStreamRevisionCase switch { AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.Revision => new StreamRevision( options.Revision).ToInt64(), AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.Any => AnyStreamRevision.Any.ToInt64(), AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.StreamExists => AnyStreamRevision.StreamExists.ToInt64(), AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.NoStream => AnyStreamRevision.NoStream.ToInt64(), _ => throw new InvalidOperationException() }; var user = await GetUser(_authenticationProvider, context.RequestHeaders).ConfigureAwait(false); var correlationId = Guid.NewGuid(); // TODO: JPB use request id? var events = new List <Event>(); var size = 0; while (await requestStream.MoveNext().ConfigureAwait(false)) { if (requestStream.Current.ContentCase != AppendReq.ContentOneofCase.ProposedMessage) { throw new InvalidOperationException(); } var proposedMessage = requestStream.Current.ProposedMessage; var data = proposedMessage.Data.ToByteArray(); size += data.Length; if (size > _maxAppendSize) { throw RpcExceptions.MaxAppendSizeExceeded(_maxAppendSize); } if (!proposedMessage.Metadata.TryGetValue(Constants.Metadata.Type, out var eventType)) { throw RpcExceptions.RequiredMetadataPropertyMissing(Constants.Metadata.Type); } if (!proposedMessage.Metadata.TryGetValue(Constants.Metadata.IsJson, out var isJson)) { throw RpcExceptions.RequiredMetadataPropertyMissing(Constants.Metadata.IsJson); } events.Add(new Event( Uuid.FromDto(proposedMessage.Id).ToGuid(), eventType, bool.Parse(isJson), data, proposedMessage.CustomMetadata.ToByteArray())); } var appendResponseSource = new TaskCompletionSource <AppendResp>(); var envelope = new CallbackEnvelope(HandleWriteEventsCompleted); _queue.Publish(new ClientMessage.WriteEvents( correlationId, correlationId, envelope, true, streamName, expectedVersion, events.ToArray(), user)); return(await appendResponseSource.Task.ConfigureAwait(false)); void HandleWriteEventsCompleted(Message message) { if (message is ClientMessage.NotHandled notHandled && RpcExceptions.TryHandleNotHandled(notHandled, out var ex)) { appendResponseSource.TrySetException(ex); return; } if (!(message is ClientMessage.WriteEventsCompleted completed)) { appendResponseSource.TrySetException( RpcExceptions.UnknownMessage <ClientMessage.WriteEventsCompleted>(message)); return; } switch (completed.Result) { case OperationResult.Success: var response = new AppendResp(); if (completed.LastEventNumber == -1) { response.NoStream = new AppendResp.Types.Empty(); } else { response.CurrentRevision = StreamRevision.FromInt64(completed.LastEventNumber); } if (completed.CommitPosition == -1) { response.Empty = new AppendResp.Types.Empty(); } else { var position = Position.FromInt64(completed.CommitPosition, completed.PreparePosition); response.Position = new AppendResp.Types.Position { CommitPosition = position.CommitPosition, PreparePosition = position.PreparePosition }; } appendResponseSource.TrySetResult(response); return; case OperationResult.PrepareTimeout: case OperationResult.CommitTimeout: case OperationResult.ForwardTimeout: appendResponseSource.TrySetException(RpcExceptions.Timeout()); return; case OperationResult.WrongExpectedVersion: appendResponseSource.TrySetException(RpcExceptions.WrongExpectedVersion( streamName, expectedVersion, completed.CurrentVersion)); return; case OperationResult.StreamDeleted: appendResponseSource.TrySetException(RpcExceptions.StreamDeleted(streamName)); return; case OperationResult.InvalidTransaction: appendResponseSource.TrySetException(RpcExceptions.InvalidTransaction()); return; case OperationResult.AccessDenied: appendResponseSource.TrySetException(RpcExceptions.AccessDenied()); return; default: appendResponseSource.TrySetException(RpcExceptions.UnknownError(completed.Result)); return; } } } }
public override async Task <AppendResp> Append( IAsyncStreamReader <AppendReq> requestStream, ServerCallContext context) { if (!await requestStream.MoveNext().ConfigureAwait(false)) { throw new InvalidOperationException(); } if (requestStream.Current.ContentCase != AppendReq.ContentOneofCase.Options) { throw new InvalidOperationException(); } var options = requestStream.Current.Options; var streamName = options.StreamIdentifier; var expectedVersion = options.ExpectedStreamRevisionCase switch { AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.Revision => new StreamRevision( options.Revision).ToInt64(), AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.Any => AnyStreamRevision.Any.ToInt64(), AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.StreamExists => AnyStreamRevision.StreamExists.ToInt64(), AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.NoStream => AnyStreamRevision.NoStream.ToInt64(), _ => throw new InvalidOperationException() }; var requiresLeader = GetRequiresLeader(context.RequestHeaders); var user = context.GetHttpContext().User; var op = WriteOperation.WithParameter(Plugins.Authorization.Operations.Streams.Parameters.StreamId(streamName)); if (!await _provider.CheckAccessAsync(user, op, context.CancellationToken).ConfigureAwait(false)) { throw AccessDenied(); } var correlationId = Guid.NewGuid(); // TODO: JPB use request id? var events = new List <Event>(); var size = 0; while (await requestStream.MoveNext().ConfigureAwait(false)) { if (requestStream.Current.ContentCase != AppendReq.ContentOneofCase.ProposedMessage) { throw new InvalidOperationException(); } var proposedMessage = requestStream.Current.ProposedMessage; var data = proposedMessage.Data.ToByteArray(); var metadata = proposedMessage.CustomMetadata.ToByteArray(); if (!proposedMessage.Metadata.TryGetValue(Constants.Metadata.Type, out var eventType)) { throw RpcExceptions.RequiredMetadataPropertyMissing(Constants.Metadata.Type); } if (!proposedMessage.Metadata.TryGetValue(Constants.Metadata.ContentType, out var contentType)) { throw RpcExceptions.RequiredMetadataPropertyMissing(Constants.Metadata.ContentType); } size += Event.SizeOnDisk(eventType, data, metadata); if (size > _maxAppendSize) { throw RpcExceptions.MaxAppendSizeExceeded(_maxAppendSize); } events.Add(new Event( Uuid.FromDto(proposedMessage.Id).ToGuid(), eventType, contentType == Constants.Metadata.ContentTypes.ApplicationJson, data, metadata)); } var appendResponseSource = new TaskCompletionSource <AppendResp>(); var envelope = new CallbackEnvelope(HandleWriteEventsCompleted); _publisher.Publish(new ClientMessage.WriteEvents( correlationId, correlationId, envelope, requiresLeader, streamName, expectedVersion, events.ToArray(), user, cancellationToken: context.CancellationToken)); return(await appendResponseSource.Task.ConfigureAwait(false)); void HandleWriteEventsCompleted(Message message) { if (message is ClientMessage.NotHandled notHandled && RpcExceptions.TryHandleNotHandled(notHandled, out var ex)) { appendResponseSource.TrySetException(ex); return; } if (!(message is ClientMessage.WriteEventsCompleted completed)) { appendResponseSource.TrySetException( RpcExceptions.UnknownMessage <ClientMessage.WriteEventsCompleted>(message)); return; } var response = new AppendResp(); switch (completed.Result) { case OperationResult.Success: response.Success = new AppendResp.Types.Success(); if (completed.LastEventNumber == -1) { response.Success.NoStream = new Empty(); } else { response.Success.CurrentRevision = StreamRevision.FromInt64(completed.LastEventNumber); } if (completed.CommitPosition == -1) { response.Success.NoPosition = new Empty(); } else { var position = Position.FromInt64(completed.CommitPosition, completed.PreparePosition); response.Success.Position = new AppendResp.Types.Position { CommitPosition = position.CommitPosition, PreparePosition = position.PreparePosition }; } appendResponseSource.TrySetResult(response); return; case OperationResult.PrepareTimeout: case OperationResult.CommitTimeout: case OperationResult.ForwardTimeout: appendResponseSource.TrySetException(RpcExceptions.Timeout()); return; case OperationResult.WrongExpectedVersion: response.WrongExpectedVersion = new AppendResp.Types.WrongExpectedVersion(); switch (options.ExpectedStreamRevisionCase) { case AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.Any: response.WrongExpectedVersion.ExpectedAny = new Empty(); response.WrongExpectedVersion.Any2060 = new Empty(); break; case AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.StreamExists: response.WrongExpectedVersion.ExpectedStreamExists = new Empty(); response.WrongExpectedVersion.StreamExists2060 = new Empty(); break; case AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.NoStream: response.WrongExpectedVersion.ExpectedNoStream = new Empty(); response.WrongExpectedVersion.ExpectedRevision2060 = ulong.MaxValue; break; case AppendReq.Types.Options.ExpectedStreamRevisionOneofCase.Revision: response.WrongExpectedVersion.ExpectedRevision = StreamRevision.FromInt64(expectedVersion); response.WrongExpectedVersion.ExpectedRevision2060 = StreamRevision.FromInt64(expectedVersion); break; } if (completed.CurrentVersion == -1) { response.WrongExpectedVersion.CurrentNoStream = new Empty(); response.WrongExpectedVersion.NoStream2060 = new Empty(); } else { response.WrongExpectedVersion.CurrentRevision = StreamRevision.FromInt64(completed.CurrentVersion); response.WrongExpectedVersion.CurrentRevision2060 = StreamRevision.FromInt64(completed.CurrentVersion); } appendResponseSource.TrySetResult(response); return; case OperationResult.StreamDeleted: appendResponseSource.TrySetException(RpcExceptions.StreamDeleted(streamName)); return; case OperationResult.InvalidTransaction: appendResponseSource.TrySetException(RpcExceptions.InvalidTransaction()); return; case OperationResult.AccessDenied: appendResponseSource.TrySetException(RpcExceptions.AccessDenied()); return; default: appendResponseSource.TrySetException(RpcExceptions.UnknownError(completed.Result)); return; } } } }