blob: eb67755233eed456acd82da9e8a9f007d1bb4da1 [file] [log] [blame]
/*
* 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 Events;
using System;
using System.Threading;
public sealed class Channel : IChannel
{
private readonly Lock _senderLock;
private readonly Guid _correlationId;
private readonly IRegisterEvent _eventRegister;
private readonly IEnqueue<MessagePackage> _enqueue;
public Channel(Guid correlationId, IRegisterEvent eventRegister, IEnqueue<MessagePackage> enqueue)
{
_senderLock = new Lock();
_correlationId = correlationId;
_eventRegister = eventRegister;
_enqueue = enqueue;
}
public void Received(MessagePackage message)
{
try
{
_enqueue.Enqueue(message);
}
catch
{
// Ignore
}
}
public void Activated()
=> _eventRegister.Register(new ChannelActivated(_correlationId));
public void ClosedByServer()
{
_senderLock.Disable();
_eventRegister.Register(new ChannelClosedByServer(_correlationId));
}
public void Connected()
=> _eventRegister.Register(new ChannelConnected(_correlationId));
public void Deactivated()
=> _eventRegister.Register(new ChannelDeactivated(_correlationId));
public void Disconnected()
{
_senderLock.Disable();
_eventRegister.Register(new ChannelDisconnected(_correlationId));
}
public void ReachedEndOfTopic()
=> _eventRegister.Register(new ChannelReachedEndOfTopic(_correlationId));
public void Unsubscribed()
=> _eventRegister.Register(new ChannelUnsubscribed(_correlationId));
public IDisposable SenderLock()
=> _senderLock.Enter();
private sealed class Lock : IDisposable
{
private readonly object _lock;
private bool _canSend;
public Lock()
{
_lock = new object();
_canSend = true;
}
public void Disable()
{
Monitor.Enter(_lock);
_canSend = false;
Monitor.Exit(_lock);
}
public IDisposable Enter()
{
Monitor.Enter(_lock);
if (_canSend)
return this;
Monitor.Exit(_lock);
throw new OperationCanceledException();
}
public void Dispose()
=> Monitor.Exit(_lock);
}
}
}