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Implement async for simple AMQP methods
Related to: * #1345 * #1308 * #970 * #843 Implement QueueDeleteAsync, ExchangeDeclareAsync and ExchangeDeleteAsync. Refactoring to come. Fix public API Move rpc continuations to their own files Add continuation timeouts to new AsyncRpcContinuations classes. Add ExchangeBindAsync to interface
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| // This source code is dual-licensed under the Apache License, version | ||
| // 2.0, and the Mozilla Public License, version 2.0. | ||
| // | ||
| // The APL v2.0: | ||
| // | ||
| //--------------------------------------------------------------------------- | ||
| // Copyright (c) 2007-2020 VMware, Inc. | ||
| // | ||
| // 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 | ||
| // | ||
| // https://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. | ||
| //--------------------------------------------------------------------------- | ||
| // | ||
| // The MPL v2.0: | ||
| // | ||
| //--------------------------------------------------------------------------- | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
| // | ||
| // Copyright (c) 2007-2020 VMware, Inc. All rights reserved. | ||
| //--------------------------------------------------------------------------- | ||
|
|
||
| namespace RabbitMQ.Client | ||
| { | ||
| /// <summary> | ||
| /// Represents Queue deletion information. | ||
| /// </summary> | ||
| public class QueueDeleteOk | ||
| { | ||
| private readonly uint _messageCount; | ||
|
|
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| /// <summary> | ||
| /// Creates a new instance of <see cref="QueueDeleteOk"/>. | ||
| /// </summary> | ||
| /// <param name="messageCount">Message count.</param> | ||
| public QueueDeleteOk(uint messageCount) | ||
| { | ||
| _messageCount = messageCount; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Count of messages purged when queue was deleted. | ||
| /// </summary> | ||
| public uint MessageCount => _messageCount; | ||
| } | ||
| } |
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projects/RabbitMQ.Client/client/impl/AsyncRpcContinuations.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,226 @@ | ||
| // This source code is dual-licensed under the Apache License, version | ||
| // 2.0, and the Mozilla Public License, version 2.0. | ||
| // | ||
| // The APL v2.0: | ||
| // | ||
| //--------------------------------------------------------------------------- | ||
| // Copyright (c) 2007-2020 VMware, Inc. | ||
| // | ||
| // 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 | ||
| // | ||
| // https://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. | ||
| //--------------------------------------------------------------------------- | ||
| // | ||
| // The MPL v2.0: | ||
| // | ||
| //--------------------------------------------------------------------------- | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
| // | ||
| // Copyright (c) 2007-2020 VMware, Inc. All rights reserved. | ||
| //--------------------------------------------------------------------------- | ||
|
|
||
| using System; | ||
| using System.Runtime.CompilerServices; | ||
| using System.Threading; | ||
| using System.Threading.Tasks; | ||
| using RabbitMQ.Client.client.framing; | ||
| using RabbitMQ.Client.Exceptions; | ||
| using RabbitMQ.Client.Framing.Impl; | ||
|
|
||
| namespace RabbitMQ.Client.Impl | ||
| { | ||
| internal abstract class AsyncRpcContinuation<T> : IRpcContinuation, IDisposable | ||
| { | ||
| private readonly CancellationTokenSource _ct; | ||
|
|
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| protected readonly TaskCompletionSource<T> _tcs = new TaskCompletionSource<T>(TaskCreationOptions.RunContinuationsAsynchronously); | ||
|
|
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| private bool _disposedValue; | ||
|
|
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| public AsyncRpcContinuation(TimeSpan continuationTimeout) | ||
| { | ||
| _ct = new CancellationTokenSource(continuationTimeout); | ||
| _ct.Token.Register(() => | ||
| { | ||
| if (_tcs.TrySetCanceled()) | ||
| { | ||
| // TODO LRB #1347 | ||
| // Cancellation was successful, does this mean we should set a TimeoutException | ||
| // in the same manner as BlockingCell? | ||
| } | ||
| }, useSynchronizationContext: false); | ||
| } | ||
|
|
||
| public TaskAwaiter<T> GetAwaiter() => _tcs.Task.GetAwaiter(); | ||
|
|
||
| // TODO LRB #1347 | ||
| // What to do if setting a result fails? | ||
| public abstract void HandleCommand(in IncomingCommand cmd); | ||
|
|
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| public void HandleChannelShutdown(ShutdownEventArgs reason) => _tcs.SetException(new OperationInterruptedException(reason)); | ||
|
|
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| protected virtual void Dispose(bool disposing) | ||
| { | ||
| if (!_disposedValue) | ||
| { | ||
| if (disposing) | ||
| { | ||
| _ct.Dispose(); | ||
| } | ||
|
|
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| _disposedValue = true; | ||
| } | ||
| } | ||
|
|
||
| public void Dispose() | ||
| { | ||
| Dispose(disposing: true); | ||
| GC.SuppressFinalize(this); | ||
| } | ||
| } | ||
|
|
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| internal class ConnectionSecureOrTuneContinuation : AsyncRpcContinuation<ConnectionSecureOrTune> | ||
| { | ||
| public ConnectionSecureOrTuneContinuation(TimeSpan continuationTimeout) : base(continuationTimeout) | ||
| { | ||
| } | ||
|
|
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| public override void HandleCommand(in IncomingCommand cmd) | ||
| { | ||
| try | ||
| { | ||
| if (cmd.CommandId == ProtocolCommandId.ConnectionSecure) | ||
| { | ||
| var secure = new ConnectionSecure(cmd.MethodBytes.Span); | ||
| _tcs.TrySetResult(new ConnectionSecureOrTune { m_challenge = secure._challenge }); | ||
| } | ||
| else if (cmd.CommandId == ProtocolCommandId.ConnectionTune) | ||
| { | ||
| var tune = new ConnectionTune(cmd.MethodBytes.Span); | ||
| // TODO LRB #1347 | ||
| // What to do if setting a result fails? | ||
| _tcs.TrySetResult(new ConnectionSecureOrTune | ||
| { | ||
| m_tuneDetails = new() { m_channelMax = tune._channelMax, m_frameMax = tune._frameMax, m_heartbeatInSeconds = tune._heartbeat } | ||
| }); | ||
| } | ||
| else | ||
| { | ||
| _tcs.SetException(new InvalidOperationException($"Received unexpected command of type {cmd.CommandId}!")); | ||
| } | ||
| } | ||
| finally | ||
| { | ||
| cmd.ReturnMethodBuffer(); | ||
| } | ||
| } | ||
| } | ||
|
|
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| internal class SimpleAsyncRpcContinuation : AsyncRpcContinuation<bool> | ||
| { | ||
| private readonly ProtocolCommandId _expectedCommandId; | ||
|
|
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| public SimpleAsyncRpcContinuation(ProtocolCommandId expectedCommandId, TimeSpan continuationTimeout) : base(continuationTimeout) | ||
| { | ||
| _expectedCommandId = expectedCommandId; | ||
| } | ||
|
|
||
| public override void HandleCommand(in IncomingCommand cmd) | ||
| { | ||
| try | ||
| { | ||
| if (cmd.CommandId == _expectedCommandId) | ||
| { | ||
| _tcs.TrySetResult(true); | ||
| } | ||
| else | ||
| { | ||
| _tcs.SetException(new InvalidOperationException($"Received unexpected command of type {cmd.CommandId}!")); | ||
| } | ||
| } | ||
| finally | ||
| { | ||
| cmd.ReturnMethodBuffer(); | ||
| } | ||
| } | ||
| } | ||
|
|
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| internal class ExchangeDeclareAsyncRpcContinuation : SimpleAsyncRpcContinuation | ||
| { | ||
| public ExchangeDeclareAsyncRpcContinuation(TimeSpan continuationTimeout) : base(ProtocolCommandId.ExchangeDeclareOk, continuationTimeout) | ||
| { | ||
| } | ||
| } | ||
|
|
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| internal class ExchangeDeleteAsyncRpcContinuation : SimpleAsyncRpcContinuation | ||
| { | ||
| public ExchangeDeleteAsyncRpcContinuation(TimeSpan continuationTimeout) : base(ProtocolCommandId.ExchangeDeleteOk, continuationTimeout) | ||
| { | ||
| } | ||
| } | ||
|
|
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| internal class QueueDeclareAsyncRpcContinuation : AsyncRpcContinuation<QueueDeclareOk> | ||
| { | ||
| public QueueDeclareAsyncRpcContinuation(TimeSpan continuationTimeout) : base(continuationTimeout) | ||
| { | ||
| } | ||
|
|
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| public override void HandleCommand(in IncomingCommand cmd) | ||
| { | ||
| try | ||
| { | ||
| var method = new Client.Framing.Impl.QueueDeclareOk(cmd.MethodBytes.Span); | ||
| var result = new QueueDeclareOk(method._queue, method._messageCount, method._consumerCount); | ||
| if (cmd.CommandId == ProtocolCommandId.QueueDeclareOk) | ||
| { | ||
| _tcs.TrySetResult(result); | ||
| } | ||
| else | ||
| { | ||
| _tcs.SetException(new InvalidOperationException($"Received unexpected command of type {cmd.CommandId}!")); | ||
| } | ||
| } | ||
| finally | ||
| { | ||
| cmd.ReturnMethodBuffer(); | ||
| } | ||
| } | ||
| } | ||
|
|
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| internal class QueueDeleteAsyncRpcContinuation : AsyncRpcContinuation<QueueDeleteOk> | ||
| { | ||
| public QueueDeleteAsyncRpcContinuation(TimeSpan continuationTimeout) : base(continuationTimeout) | ||
| { | ||
| } | ||
|
|
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| public override void HandleCommand(in IncomingCommand cmd) | ||
| { | ||
| try | ||
| { | ||
| var result = new Client.Framing.Impl.QueueDeleteOk(cmd.MethodBytes.Span); | ||
| if (cmd.CommandId == ProtocolCommandId.QueueDeleteOk) | ||
| { | ||
| _tcs.TrySetResult(result); | ||
| } | ||
| else | ||
| { | ||
| _tcs.SetException(new InvalidOperationException($"Received unexpected command of type {cmd.CommandId}!")); | ||
| } | ||
| } | ||
| finally | ||
| { | ||
| cmd.ReturnMethodBuffer(); | ||
| } | ||
| } | ||
| } | ||
| } |
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