public void ThreadRun(CancellationToken token)
{
if (!queueFactory.IsActive)
{
logger.Warn("Message queue is not active or has been disabled. Messages will not be consumed.");
return;
}
var identifier = ConfigurationManager.AppSettings["MiramarIdentifier"];
var queue = ConfigurationManager.AppSettings["RabbitMqMessageQueue"];
if (string.IsNullOrWhiteSpace(queue))
{
logger.Warn("RabbitMQ Message Queue has not been configured or is empty. Messages will not be consumed.");
return;
}
var handlers = ObjectFactory.GetAllInstances <IScheduleMessageHandler>()
.ToArray();
if (handlers.Length == 0)
{
logger.Warn("No message handlers have been registered. Messages will not be consumed.");
return;
}
using (var service = queueFactory.CreateService())
{
service.Consume(queue, token,
message =>
{
var properties = message.Properties;
var miramarIdentifier = string.Empty;
if (properties.IsAppIdSet)
{
miramarIdentifier = properties.AppId;
}
if (!miramarIdentifier.Equals(identifier, StringComparison.OrdinalIgnoreCase))
{
logger.WarnFormat(
"Message of type \"{0}\" with action \"{1}\" contains an invalid identifier. The message \"AppId\" must equals \"{2}\".",
message.Type, message.Action, identifier);
return(false);
}
var handler = handlers
.FirstOrDefault(x => x.IsSatisfiedBy(message));
if (handler == null)
{
logger.WarnFormat(
"No handler found for messge of type \"{0}\" with action \"{1}\". Message will be rejected.",
message.Type, message.Action);
return(false);
}
return(handler.Handle(taskProvider, scheduleProvider, contextProvider, message));
});
logger.Warn("Message queue service has stopped consuming messages.");
}
}
