整体架构与ceilometer很类似
- Yagi consumes these notifications from the queue and passes them onto a chain of Yagi Handlers.
- Some yagi handlers include:
- Winchester takes the distilled notifications (called events) and stores them in the MySQL database.已经在ceilometer实现了
- Streams may be created or processed as new events flow into the system. This can result in new events or notifications being generated.
- Any new notifications can be published back into the queue for subsequent processing via theNotabene pipeline handler.
目前ceilometer正在实现的功能。
- ... the sequence repeats itself.
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Stacktack overview
原文：http://www.cnblogs.com/allcloud/p/5462041.html
