Playlist check function used with the logs in Liquidsoap

check.liq

set("log.file.path", "/tmp/test.log")
set("server.socket.path","/tmp/<script>.sock")
set("server.socket",true)

# Simple check function to match any "Finished with ...." line in the logs
def checker(n)
  # get info from upcoming request
  m = request.metadata(n)
  # command to find if the file was played according to the log
  command = 'grep -F'
  to_match = quote('Finished with "#{m["filename"]}"')
  log_file = quote(get(default="", "log.file.path"))
  command = '#{command} #{to_match} #{log_file}'
  system("echo #{quote(command)}")
  # assuming fgrep will return a non-zero code if it wasn't found
  # test_process will return false for it, so invert the boolean value
  not test_process(command)
end

src = playlist('truc.txt', id='truc', mode="normal", check_next=checker)
secure = playlist.safe('one.txt', id='one')

s = fallback([src, secure], track_sensitive=false)

output.pulseaudio(s)