[Ovmsdev] Add support for "log file ..." to log to the specified vfs file

[Stephen Casner]

Michael,

I think we can do better than "tail" command.  The design for printing
log messages is prepared to print on all registered consoles.  We have
restricted the console_logger() function to just output on the async
console out of concernt that sending output to the remote consoles
might be too much of a burden.  But if that is what's desired for a
particular user's scenario, then what we should do is to add a command
to direct the output to all consoles.

                                                        -- Steve

On Wed, 10 Jan 2018, Michael Balzer wrote:

> Mark,
>
> I've built a simple "tail" command to follow the file log on the telnet console.
>
> Unfortunately -- with v2.1 -- the fflush() on the log file doesn't work as expected, the file contents will not be updated until I close the file.
>
> Is that issue solved with v3.x?
>
> Regards,
> Michael
>
>
> Am 08.01.2018 um 07:28 schrieb Mark Webb-Johnson:
> > I've restructured the log commands a bit:
> >
> >   * The old "level <severity>" command has moved to "log level <severity>"
> >
> >   * A new "log file <path>" command has been added. For example "log file /sd/log.txt" will mean that anything that gets logged to the console will also get
> >     appended to /sd/log.txt as well, until reboot. You can use /sd (if SD CARD is working for you), or /store (but take care - that is system flash).
> >
> >   * You should be able to hook this in at the "sd.mounted" event script, to turn on logging to sd card on boot (again, if SD CARD is working for you).
> >
> >
> > Enjoy, Mark
> >
> >>  Branch: refs/heads/master
> >>  Home:   https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3
> >>  Commit: 6947670e33823dd68d4bf76b7872518fc8398264
> >>      https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/commit/6947670e33823dd68d4bf76b7872518fc8398264
> >>  Author: Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>>
> >>  Date:   2018-01-08 (Mon, 08 Jan 2018)
> >>
> >>  Changed paths:
> >>    M vehicle/OVMS.V3/main/console_async.cpp
> >>    M vehicle/OVMS.V3/main/ovms_command.cpp
> >>    M vehicle/OVMS.V3/main/ovms_log.h
> >>    M vehicle/OVMS.V3/main/ovms_main.cpp
> >>
> >>  Log Message:
> >>  -----------
> >>  Add support for "log file ..." to log to the specified vfs file
> >
> >
> >
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>
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