/// <summary>
/// Publish_s the implementation.
/// </summary>
/// <param name="callback">The callback.</param>
/// <param name="message">The message.</param>
/// <param name="publishMethod">The publish method.</param>
/// <param name="options">The options.</param>
/// <param name="publishToOriginator">if set to <c>true</c> [publish to originator].</param>
/// <param name="mergeAction">The merge action.</param>
/// <returns></returns>
private Task <long> Publish_Impl(Func <T, PublishOptions, bool, Task <long> > callback, T message, PublishMethod publishMethod, PublishOptions options = PublishOptions.None, bool publishToOriginator = false, Action <T, T> mergeAction = null)
{
if (Equals(message, default(T)))
{
return(null);
}
if (Suppression.IsActive( ))
{
return(null);
}
DeferredChannelMessageContext deferredMessageContext = null;
try
{
/////
// If running in a delayed context, use the current message store.
/////
if (publishMethod == PublishMethod.Deferred)
{
deferredMessageContext = DeferredChannelMessageContext.GetContext( );
if (deferredMessageContext.ContextType != ContextType.Attached && !DeferredChannelMessageContext.SuppressNoContextWarning)
{
EventLog.Application.WriteWarning("Channel {0} has been created with PublishMethod.Deferred with no DeferredChannelMessageContext set. Messages will be sent immediately. Either set a DeferredChannelMessageContext or publish the message with PublishMethod.Immediate.", ChannelName);
}
}
if (deferredMessageContext != null &&
deferredMessageContext.ContextType == ContextType.Attached)
{
deferredMessageContext.AddOrUpdateMessage(ChannelName, message, mergeAction);
}
else
{
return(callback(message, options, publishToOriginator));
}
}
finally
{
if (deferredMessageContext != null)
{
deferredMessageContext.Dispose( );
}
}
return(null);
}
/// <summary>
/// Publishes the message.
/// </summary>
/// <param name="callback">The callback.</param>
/// <param name="message">The message.</param>
/// <param name="options">The options.</param>
/// <param name="publishToOriginator">if set to <c>true</c>, the message will be published to the originator also.</param>
/// <returns></returns>
private Task <long> PublishMessage(Func <ISubscriber, byte[], CommandFlags, Task <long> > callback, T message, PublishOptions options, bool publishToOriginator = false)
{
if (Equals(message, default(T)))
{
return(null);
}
if (Suppression.IsActive( ))
{
return(null);
}
ISubscriber subscriber = Subscriber;
if (subscriber != null)
{
var payload = new ChannelMessage <T>(message, publishToOriginator);
if (subscriber.Multiplexer.IsConnected)
{
try
{
var flags = CommandFlags.None;
if (options == PublishOptions.FireAndForget)
{
flags = CommandFlags.FireAndForget;
}
byte[] serialize = ChannelMessage <T> .Serialize(payload);
byte[] compress = CompressionHelper.Compress(serialize);
return(callback(subscriber, compress, flags));
}
catch (StackExchange.Redis.RedisConnectionException exc)
{
EventLog.Application.WriteWarning("Redis appears to be down. {0}", exc);
}
}
}
return(null);
}