/// <summary>
/// Creates a new <see cref="SimpleChannelPool"/> instance.
/// </summary>
/// <param name="bootstrap">The <see cref="Bootstrapping.Bootstrap"/> that is used for connections.</param>
/// <param name="handler">
/// The <see cref="IChannelPoolHandler"/> that will be notified for the different pool actions.
/// </param>
/// <param name="healthChecker">
/// The <see cref="IChannelHealthChecker"/> that will be used to check if a <see cref="IChannel"/> is still
/// healthy when obtained from the <see cref="IChannelPool"/>.
/// </param>
/// <param name="releaseHealthCheck">
/// If <c>true</c>, will check channel health before offering back. Otherwise, channel health is only checked
/// at acquisition time.
/// </param>
/// <param name="lastRecentUsed">
/// If <c>true</c>, <see cref="IChannel"/> selection will be LIFO. If <c>false</c>, it will be FIFO.
/// </param>
public SimpleChannelPool(Bootstrap bootstrap, IChannelPoolHandler handler, IChannelHealthChecker healthChecker, bool releaseHealthCheck, bool lastRecentUsed)
{
if (handler is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.handler);
}
if (healthChecker is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.healthChecker);
}
if (bootstrap is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.bootstrap);
}
Handler = handler;
HealthChecker = healthChecker;
ReleaseHealthCheck = releaseHealthCheck;
// Clone the original Bootstrap as we want to set our own handler
Bootstrap = bootstrap.Clone();
_ = Bootstrap.Handler(new ActionChannelInitializer <IChannel>(OnChannelInitializing));
_store =
lastRecentUsed
? (IQueue <IChannel>) new CompatibleConcurrentStack <IChannel>()
: new CompatibleConcurrentQueue <IChannel>();
}
protected override HttpChannelPool NewPool(NettyFullAddress key)
{
/*
* When there is a proxy configured, the client must not try to resolve the server address
* because the server could be on a network unreachable to the client
*/
Bootstrap poolBootstrap = cb.Clone();
poolBootstrap.RemoteAddress(key.Address);
if (log.IsDebugEnabled)
{
log.Debug("New HTTP channel pool created. Remote address: " + key.Address);
}
IChannelPoolHandler handler = outerInstance.decorateChannelPoolHandler(new HttpChannelPoolHandler(key));
return(new HttpChannelPool(key, poolBootstrap, handler));
}
/// <summary>
/// Creates a new <see cref="SimpleChannelPool"/> instance.
/// </summary>
/// <param name="bootstrap">The <see cref="Bootstrapping.Bootstrap"/> that is used for connections.</param>
/// <param name="handler">
/// The <see cref="IChannelPoolHandler"/> that will be notified for the different pool actions.
/// </param>
/// <param name="healthChecker">
/// The <see cref="IChannelHealthChecker"/> that will be used to check if a <see cref="IChannel"/> is still
/// healthy when obtained from the <see cref="IChannelPool"/>.
/// </param>
/// <param name="releaseHealthCheck">
/// If <c>true</c>, will check channel health before offering back. Otherwise, channel health is only checked
/// at acquisition time.
/// </param>
/// <param name="lastRecentUsed">
/// If <c>true</c>, <see cref="IChannel"/> selection will be LIFO. If <c>false</c>, it will be FIFO.
/// </param>
public SimpleChannelPool(Bootstrap bootstrap, IChannelPoolHandler handler, IChannelHealthChecker healthChecker, bool releaseHealthCheck, bool lastRecentUsed)
{
Contract.Requires(handler != null);
Contract.Requires(healthChecker != null);
Contract.Requires(bootstrap != null);
this.Handler = handler;
this.HealthChecker = healthChecker;
this.ReleaseHealthCheck = releaseHealthCheck;
// Clone the original Bootstrap as we want to set our own handler
this.Bootstrap = bootstrap.Clone();
this.Bootstrap.Handler(new ActionChannelInitializer <IChannel>(this.OnChannelInitializing));
this.store =
lastRecentUsed
? (IQueue <IChannel>) new CompatibleConcurrentStack <IChannel>()
: new CompatibleConcurrentQueue <IChannel>();
}
public virtual ValueTask <IChannel> AcquireAsync()
{
if (!TryPollChannel(out IChannel channel))
{
Bootstrap bs = Bootstrap.Clone();
_ = bs.Attribute(PoolKey, this);
return(new ValueTask <IChannel>(ConnectChannel(bs)));
}
IEventLoop eventLoop = channel.EventLoop;
if (eventLoop.InEventLoop)
{
return(DoHealthCheck(channel));
}
else
{
var completionSource = new TaskCompletionSource <IChannel>();
eventLoop.Execute(DoHealthCheck, channel, completionSource);
return(new ValueTask <IChannel>(completionSource.Task));
}
}
