MySQL Bugs: #30387: Proxy should let Lua scripts handle OS events

Bug #30387	Proxy should let Lua scripts handle OS events
Submitted:	13 Aug 2007 12:57
Reporter:	Giuseppe Maxia	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Proxy: Core	Severity:	S4 (Feature request)
Version:	0.6.0	OS:	Any
Assigned to:	Assigned Account	CPU Architecture:	Any
Tags:	events, proxy

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Description:
Currently, there is no way for a Lua script to handle termination  events.
This handling is needed to clean up after complex tasks, or to summarize actions that occurred during the proxy lifetime.

The main events that should have a handle are:

- quit (Normal exit)
- termination (user interrupt)
- kill (caught SIGTERM)

How to repeat:
try to detect when the Proxy is exiting.

Suggested fix:

Create a handler for all termination events in the proxy, and expose such handler in the API, so that it can be used from a Lua script.

One possible implementation would be to have just one function (e.g. signal_handler(signal_object)) to catch all events.