Service management of Sage - D

[YU_Xinjie]

@lingu Please review.

The driving example: http://tab.d-thinker.org/showthread.php?...9#pid41989
We needs to let sage complains to mayday when sage fails.

The design is as follows:

(07-12-2016 05:54 PM)YU_Xinjie Wrote:  sage start

Start a sage_screen to run script start_sage.
start_sage script looks like this:

Quote:...

do_start() {
./detect_listen.sh &
make run, which would calls `dt run sage-svc $sage_base/config.pcf`
if return non-0 {
.. mayday_msg = "SAGE FATAL EXIT. "
.. check the stdout log of Sage. If it is because one of the task failure {
.... find the container (DT) log of this task
.... mayday_msg += fetch the task command line from the container log
.. }

.. #Do some clean work
.. kill (clean) the screen session of "sage wake"
.. kill (clean) the screen session of "sage start", namely the current session.
}
}
...