def didl_parse(xml, xmlpath, xslpath, delimiter, standardtags, tags = None, returnresult = None):
"retrieving audio tags from response xml"
didl_xml = OHcommons.xml_prepare(xml, xmlpath, 'string')
didl_xsl = OHcommons.xsl_prepare('didl', xslpath)
returnstring = None
if tags == None:
for tag in standardtags.split(','):
tagvalue = OHcommons.xsl_transform(didl_xml, didl_xsl, tag)
if str(tagvalue) == '': tagvalue = '-'
if returnstring == None:
returnstring = str(tagvalue)
else:
returnstring = returnstring + delimiter + str(tagvalue)
else:
for tag in tags:
tagvalue = OHcommons.xsl_transform(didl_xml, didl_xsl, tag)
if returnstring == None:
returnstring = str(tagvalue)
else:
returnstring = returnstring + delimiter + str(tagvalue)
if returnresult == None:
print returnstring
return
else:
return returnstring
def parse_event(text, action, state_var, path):
xml = OHcommons.xml_prepare(text, '', 'string')
xsl = OHcommons.xsl_prepare('OHevent', path)
result = OHcommons.xsl_transform(xml, xsl, action, state_var)
return str(result)
def subscription_handler(descriptions, available_devices, config, units_used,
state_vars):
'initialize subscriptions for all available devices'
timeouts = []
for device in available_devices:
logging.info('Processing ' + device + ' ...')
if device in units_used.keys():
for unit in units_used[device]:
xsl = OHcommons.xsl_prepare('description', config['xslpath'])
result = OHcommons.xsl_transform(descriptions[device]['xml'],
xsl, 'event_url', unit[0])
if str(result) != '':
unit.append(descriptions[device]['baseurl'] + str(result))
sid, timeout = subscribe('subscribe', device, descriptions[device]['baseurl'], str(result), \
config['callback'], config['port'])
if timeout != None:
timeouts.append(int(timeout))
if sid != None:
unit.append(sid)
logging.info('Processing ' + device + ' finished.')
logging.debug('units: ' + str(units_used))
try:
timeout = min(timeouts) / 2
except:
timeout = 300
logging.debug('timeout: ' + str(timeout))
logging.info(
'Initial device search and subscription done. Entering serice loop ...'
)
while True:
for counter in xrange(1, 10):
time.sleep(int(timeout / 10))
if config['message'] == 'newdevice':
config['message'] = ''
break
while config['message'] != '':
logging.info('Subscription handler blocked (' + config['message'] +
'). Waiting ...')
if config['message'] == 'subscription':
logging.warning(
'Subscription is blocking itself. Removing block.')
config['message'] = ''
if config['message'] == 'newdevice':
config['message'] = ''
break
time.sleep(10)
config['message'] = 'subscription'
for device in available_devices:
logging.info('Processing ' + device + ' ...')
if device in units_used.keys():
for unit in units_used[device]:
if len(unit) > 1:
if subscribe('renew', device, unit[1], '', '',
config['port'], unit[2]):
logging.info('Subscription for ' + device +
' event url ' + unit[1] + ' renewed.')
else:
del unit[1:]
logging.info('Subscription for ' + device +
' failed. Deleting sid from list.')
else:
xsl = OHcommons.xsl_prepare('description',
config['xslpath'])
result = OHcommons.xsl_transform(
descriptions[device]['xml'], xsl, 'event_url',
unit[0])
if str(result) != '':
unit.append(descriptions[device]['baseurl'] +
str(result))
sid, timeout = subscribe('subscribe', device, descriptions[device]['baseurl'], str(result), \
config['callback'], config['port'])
if timeout != None:
timeouts.append(int(timeout))
if sid != None:
unit.append(sid)
logging.info('Processing ' + device + ' finished.')
timeouts = list(set(timeouts))
try:
timeout = min(timeouts) / 2
except:
timeout = 300
logging.debug('timeout: ' + str(timeout))
logging.info('Subscription loop done. Timeout: ' + str(timeout) + '.')
config['message'] = ''
return