asterisk - Simplifying device creation in sip.conf -

i have define many similar devices in sip.conf this:

[device](!) ; setting parameters  [device01](device) callerid=dev01 <01> [device02](device) callerid=dev02 <02> ; ... [devicexx](device) callerid=devxx <xx> 

the question perhaps avoid setting device-name specific parameters using variable following?

[device](!) callerid=dev${device_name:-2} <${device_name:-2}> ; setting parameters  [device01](device) [device02](device) ; ... [devicexx](device) 

p.s. perfect, if there device constructor, reduce script following, but, think, not possible in asterisk.

[device](!) callerid=dev${device_name:-2} <${device_name:-2}> ; setting parameters  ;[device${magic_loop(1,xx,leading_zeroes)}](device) 

i've had results writing small program takes care of it. checks line saying like

------- automatically generated ------- 

and whatever after line, it's going regenerated detects there new values (it database or text file). then, run supervisor , checks every xx seconds if there changes.

if there changes, issues sip reload command after updating sip.conf file

i wrote in python, whatever language feel comfortable should work fine.

that's how managed , has been working fine far (after couple of months). i'd extremely interested in learning other approaches though. it's (called script supervisor):

users = get_users_logic()  #get data me used on sip.conf file data_to_be_hashed = reduce(lambda x, y: x + y, map(lambda x: x['username'] + x['password'] + x['company_prefix'], users))  m = hashlib.md5() m.update(str(data_to_be_hashed).encode("ascii")) new_md5 = m.hexdigest()  last_md5 = none try:     file = open(os.path.dirname(os.path.realpath(__file__)) + '/lastmd5.txt', 'r')     last_md5 = file.read().rstrip()     file.close() except:     pass  # if changed... if new_md5 != last_md5:     #needs update     open(settings['asterisk']['path_to_sip_conf'], 'r') file:         sip_content = file.read().rstrip()      parts = sip_content.split(";-------------- beyond point auto generated --------------;")     sip_content = parts[0].rstrip()     sip_content += "\n\n;-------------- beyond point auto generated --------------;\n\n"      user in users:         m = hashlib.md5()         m.update(("%s:sip.ellauri.it:%s" % (user['username'], user['password'])).encode("ascii"))         md5secret = m.hexdigest()          sip_content += "[%s]\ntype = friend\ncontext = %slocal\nmd5secret = %s\nhost = dynamic\n\n" % (         user['username'], user['company_prefix'], md5secret)      #write sip.conf file     f = open(settings['asterisk']['path_to_sip_conf'], 'w')     print(sip_content, file=f)     f.close()      subprocess.call('asterisk -x "sip reload"', shell=true)      #write new md5     f = open(os.path.dirname(os.path.realpath(__file__)) + '/lastmd5.txt', 'w')     print(new_md5, file=f)     f.close()