[mythtv-commits] Ticket #12977: Improved Frontend Startup in case of connection problems

[MythTV]

#12977: Improved Frontend Startup in case of connection problems
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 Reporter:  pbennett          |          Owner:  pbennett
     Type:  Developer Task    |         Status:  accepted
 Priority:  minor             |      Milestone:  29.0
Component:  MythTV - General  |        Version:  Master Head
 Severity:  medium            |     Resolution:
 Keywords:                    |  Ticket locked:  0
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Comment (by mdean):

 Regarding DB ping (whether using mysqladmin -ping, mysql_ping, or
 homegrown code), please see [5b3aaea9] and the thread at
 https://lists.gt.net/mythtv/dev/284304 (especially
 https://lists.gt.net/mythtv/dev/284318#284318 and
 https://lists.gt.net/mythtv/dev/284319#284319 ).  The current approach,
 pinging the host, while not perfect (since it doesn't detect the DB
 itself), was meant to be fast--especially when the user misconfigures
 things.  Making a user wait 3min at initial setup only to be told the
 database couldn't be contacted would make initial setup even more
 frustrating.  Also, many first-time users tend to put the MythTV backend
 port into the MySQL port box, so any test you do needs to be sure to not
 crash (or cause problems--client or server side) when it hits a non-MySQL
 port.

 That said, once initial (interactive) configuration is done, I'm a big fan
 of the just-do-it approach (i.e. don't check to make sure things still
 work--instead just do what we're told and fail/shut down if it doesn't
 work).  That said, in this world of systemd and "shotgun start everything,
 assuming order is irrelevant", I seem to be one of the few who's willing
 to consider a proper system configuration and working prerequisites as a
 startup requirement.  (In other words, I don't mind if things change, but
 wanted to mention the how we got to where we are backstory.)

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Ticket URL: <https://code.mythtv.org/trac/ticket/12977#comment:4>
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