[mythtv-users] Anybody have any alerts set up on failed recordings?

[Matt Mossholder]

On Thu, Mar 1, 2012 at 8:03 PM, Larry K <lunchtimelarry at gmail.com> wrote:

> On Thu, Mar 1, 2012 at 7:53 PM, Matt Emmott <memmott at gmail.com> wrote:
>
>> I have an occasionally-recurring problem where my HDHomeRun Prime, or at
>> least the Charter Tuning Adapter, loses its connection. When this happens,
>> recordings that use the cablecard (pretty much anything that isn't
>> available on QAM) fail. I came home today and had a boatload of failed
>> recordings. When this happens I have to reboot the Tuning Adapter and
>> HDHomeRun before I can tune those channels again.
>>
>> I was wondering if anybody had set up any kind of alerting, preferably
>> using email, when recordings fail. I haven't looked into it that deeply
>> yet, perhaps using procmail and the mythbackend.log, or the system events
>> feature that I admittedly haven't looked into very deeply.
>>
>> I'm open to any ideas. Thanks!
>>
>>
> I just have a simple script I run with cron to scan the log and send me an
> email.  You can grep for whatever message you care about.  Not very
> sophisticated, but it mostly works.
>
> #!/bin/bash
> if [ $(tac /var/log/mythtv/mythbackend.log |grep -e "Error:"  | wc -l ) =
> 0 ] ; then
> exit
> else
> /usr/sbin/sendmail email_address at gmail.com < /mail_message.txt
> fi
> exit 0
>

My script is more HD-PVR-centric, but could probably be adapted to deal
with other situations. It is meant to run as a "Recording Finished" System
Event.

 #!/usr/bin/env python

#    zero-size-handler.py
#    By Matt Mossholder
#    http://www.mossholder.com

# A semi-frequent issue experienced by MythTV users is failed recordings
# resulting in a file with 0 bytes in it.  This script attempts to identify
# these recordings as they occur, notify you via email, and schedule the
# program to be rerecorded at a later time.

# if any of these are not None, the given value(s) will be used to create a
# database connection
dbhost = None
dbname = None
dbuser = None
dbpass = None

# includes
from sys import exit,argv
from os import path
from subprocess import Popen,PIPE
from MythTV import MythBE,Program
from MythTV import OldRecorded, Recorded
from MythTV import MythDB, MythLog


# utility function: connect and return a MythDB object
def __db_connect():

  # connect
  args = []
  if dbhost: args.append( ('DBHostName', dbhost) )
  if dbname: args.append( ('DBName', dbname) )
  if dbuser: args.append( ('DBUserName', dbuser) )
  if dbpass: args.append( ('DBPassword', dbpass) )
  db = MythDB(args=args)
  log = MythLog(module='zero-size-handler', lstr='important')
  return db

def sendMail(body):
    sendmail_location = "/usr/sbin/sendmail" # sendmail location
    p = Popen("%s -t" % sendmail_location, shell=True, stdin=PIPE)
    p.stdin.write("From: %s\n" % "root")
    p.stdin.write("To: %s\n" % "root")
    p.stdin.write("Subject: Deleted & Rescheduled 0 byte recording\n")
    p.stdin.write("\n") # blank line separating headers from body
    p.stdin.write(body)
    p.stdin.close()
    status = p.wait()
    if status != 0:
       print "ERROR: Sendmail exit status", status

# zerosizehandler
def zerosizehandler(chanid, starttime, title, db=None):

  if not db: db = __db_connect()
  be = MythBE(db=db)
  log = MythLog(module='zero-size-handler', lstr='general')

  # get the information on the current recording
  r = db.searchRecorded(chanid=chanid, starttime=starttime)
  if r:
    count = 0
    for rec in r:
      count = count+1
      prog = Program.fromRecorded(rec)
      if path.exists(be.getCheckfile(prog)):
        if path.getsize(be.getCheckfile(prog)) == 0:
          msg = 'Deleted 0 byte recording, set to allow re-recording for
chanid: %d,  starttime: %s,  title: %s,  subtitle: %s' % ( prog.chanid,
prog.starttime.strftime("%Y%m%d%H%M%S"),prog.title, prog.subtitle )
          sendMail(msg)
          prog.delete(force=False,rerecord=True)
        else:
          msg = 'Recording is OK for chanid: %d,  starttime: %s,  title:
%s,  subtitle: %s' % ( prog.chanid,
prog.starttime.strftime("%Y%m%d%H%M%S"), prog.title, prog.subtitle )
        log(MythLog.GENERAL,msg)
      else:
        msg = 'Recording missing, set to allow re-recording for chanid: %d,
 starttime: %s,  title: %s,  subtitle: %s' % ( prog.chanid,
prog.starttime.strftime("%Y%m%d%H%M%S"),prog.title, prog.subtitle )
        sendMail(msg)
        prog.delete(force=True,rerecord=True)
        log(MythLog.GENERAL,msg)
    if count == 0:
      log(MythLog.GENERAL,'DB Record is missing for chanid: %s,  starttime:
%s,  title: %s' % ( chanid, starttime, title ) )

# main
if __name__ == '__main__':

  if len(argv) == 4:
    chanid = argv[1]
    starttime = argv[2]
    title = argv[3]
    zerosizehandler(chanid, starttime, title)
  else:
    print "Invalid number of arguments!"
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