| /* |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| namespace DotPulsar.Internal |
| { |
| using Abstractions; |
| using Extensions; |
| using PulsarApi; |
| using System; |
| using System.Buffers; |
| using System.Threading; |
| using System.Threading.Tasks; |
| |
| public sealed class ProducerChannel : IProducerChannel |
| { |
| private readonly MessageMetadata _cachedMetadata; |
| private readonly SendPackage _cachedSendPackage; |
| private readonly ulong _id; |
| private readonly SequenceId _sequenceId; |
| private readonly IConnection _connection; |
| |
| public ProducerChannel(ulong id, string name, SequenceId sequenceId, IConnection connection) |
| { |
| _cachedMetadata = new MessageMetadata { ProducerName = name }; |
| |
| var commandSend = new CommandSend { ProducerId = id, NumMessages = 1 }; |
| |
| _cachedSendPackage = new SendPackage(commandSend, _cachedMetadata); |
| |
| _id = id; |
| _sequenceId = sequenceId; |
| _connection = connection; |
| } |
| |
| public async ValueTask DisposeAsync() |
| { |
| try |
| { |
| await _connection.Send(new CommandCloseProducer { ProducerId = _id }, CancellationToken.None).ConfigureAwait(false); |
| } |
| catch |
| { |
| // Ignore |
| } |
| } |
| |
| public Task<CommandSendReceipt> Send(ReadOnlySequence<byte> payload, CancellationToken cancellationToken) |
| { |
| _cachedSendPackage.Metadata = _cachedMetadata; |
| _cachedSendPackage.Payload = payload; |
| |
| return SendPackage(true, cancellationToken); |
| } |
| |
| public Task<CommandSendReceipt> Send(MessageMetadata metadata, ReadOnlySequence<byte> payload, CancellationToken cancellationToken) |
| { |
| metadata.ProducerName = _cachedMetadata.ProducerName; |
| _cachedSendPackage.Metadata = metadata; |
| _cachedSendPackage.Payload = payload; |
| |
| return SendPackage(metadata.SequenceId == 0, cancellationToken); |
| } |
| |
| private async Task<CommandSendReceipt> SendPackage(bool autoAssignSequenceId, CancellationToken cancellationToken) |
| { |
| try |
| { |
| _cachedSendPackage.Metadata.PublishTime = (ulong) DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(); |
| |
| if (autoAssignSequenceId) |
| { |
| _cachedSendPackage.Command.SequenceId = _sequenceId.Current; |
| _cachedSendPackage.Metadata.SequenceId = _sequenceId.Current; |
| } |
| else |
| _cachedSendPackage.Command.SequenceId = _cachedSendPackage.Metadata.SequenceId; |
| |
| var response = await _connection.Send(_cachedSendPackage, cancellationToken).ConfigureAwait(false); |
| response.Expect(BaseCommand.Type.SendReceipt); |
| |
| if (autoAssignSequenceId) |
| _sequenceId.Increment(); |
| |
| return response.SendReceipt; |
| } |
| finally |
| { |
| // Reset in case the user reuse the MessageMetadata, but is not explicitly setting the sequenceId |
| if (autoAssignSequenceId) |
| _cachedSendPackage.Metadata.SequenceId = 0; |
| } |
| } |
| } |
| } |