def monitor_devicecore_setup(request):
"""
View to handle DeviceCore monitor setup for an user
Will query for existing monitors, create a new one if none found, else
kickstart existing monitor.
Returns the monitor information from Device Cloud
------------------------------------------
"""
username, password, cloud_fqdn = get_credentials(request)
if not username or not password or not cloud_fqdn:
return Response(status=status.HTTP_400_BAD_REQUEST)
conn = DeviceCloudConnector(username, password, cloud_fqdn)
endpoint_url = reverse(monitor_receiver, request=request)
# Device cloud won't allow monitors pointing to localhost, etc,
# so don't even try
if 'localhost' in endpoint_url or '127.0.0.1' in endpoint_url:
logger.error('Rejecting attempt to create monitor to ' + endpoint_url)
return Response(status=status.HTTP_400_BAD_REQUEST)
try:
monitors = conn.get_devicecore_monitor(endpoint_url)
if monitors['resultSize'] == "0":
# No existing monitors found for this device on this account,
# create a new one
# NOTE: The full url is generated by information passed in the
# request. If the same backend is being routed to from multiple
# places (reverse proxies, etc), each will generate a different
# url.
logger.info('Creating a new DeviceCore monitor for user %s'
% username)
resp = conn.create_devicecore_monitor(
endpoint_url,
settings.SECRET_DEVICE_CLOUD_MONITOR_AUTH_USER,
settings.SECRET_DEVICE_CLOUD_MONITOR_AUTH_PASS,
description="XBee Wi-Fi Cloud Kit Monitor")
else:
# Should only have one monitor for a given device/topic
if len(monitors['items']) > 1:
logger.warning("Found multiple monitors for user %s! " +
"This should not happen!" % username)
monitor = monitors['items'][0]
logger.info(
'Found an existing DeviceCore monitor for user, kicking it')
conn.kick_monitor(
monitor['monId'],
settings.SECRET_DEVICE_CLOUD_MONITOR_AUTH_USER,
settings.SECRET_DEVICE_CLOUD_MONITOR_AUTH_PASS)
# Return the original info
resp = monitors
except HTTPError, e:
return Response(status=e.response.status_code, data=e.response.text)
