[mythtv-users] WARNING: SchedulesDirect users: server currently returning bogus results
rmeden at yahoo.com
Sun Dec 20 07:42:29 UTC 2009
On 12/19/2009 11:14 PM, f-myth-users at media.mit.edu wrote:
> I note that none of the manpages for any version of tv_grab_na_dd I've managed
> to find mention anything about it returning any status at all; I
> haven't checked the code to see if it returns anything other than 0
> or 1.
I wrote _na_dd and am the maintainer. Most (if not all) XMLTV apps
follow the standard unix practice of exiting 0 on success something else
on error. Like many unix utilities, it's not always in the man page.
You have a valid point and I'll add it to _na_dd.
I looked at my code, and appear to have run into this problem with
_na_dd in the (distant) past. In addition to parsing the XML, I
search the raw XML for <faultstring>. If it exists, I report the error
and die. From Tribune's point of view it makes sense; they were
processing/transmitting data when they hit an error. It would be
difficult to close all the open tags so they just add the error message
and die. When I dealt with this before, the XML wasn't valid and I
couldn't parse. it.
Since you use "--download-only" my check can't help you since it
just.... downloads the data. If something downloaded (even with an
embedded error) to me it's a success under --download-only. Whatever
parses the output should check for errors just like I do when I process
the downloaded data.
In the case of MythTV (when it reads a raw data direct formatted file),
it appears to blow away the database before it fully parses the file,
ensuring it's valid. I suspect many XML errors could cause the "zero'd
The outage should not have impacted many people. Most download at least
7 days of data and a single days' outage *should* be tolerable. IMHO
you have a valid gripe with the Myth loader, not the service. (as
history shows, we do have a pretty good track record minimizing
outages). Hopefully the stock Myth download behaved better and only a
few people were impacted. Good idea to warn the list.
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