def get():
installations = r_server.smembers('installations')
if installations:
installation = {}
installation['serial_number'] = installations.pop()
installation['model'] = r_server.hget('installation:%s' % installation['serial_number'], 'model')
return installation
return {}
def get_tags():
try:
tags = []
for controller_ip in r_server.smembers('controllers'):
for tag in get_controller_tags(controller_ip):
tags.append(tag)
return tags
except RedisError:
return None
def delete_controller_tags(controller_ip):
try:
tags = []
for tag_name in r_server.smembers('tags:%s' % controller_ip):
if r_server.hget('tag:%s:%s' % (controller_ip, tag_name), 'controller_ip') == controller_ip:
tags.append(tag_name)
for tag_name in tags:
delete_tag(tag_name)
return tags
except RedisError:
return None
def get_controller_tags(controller_ip):
try:
tags = []
for tag_name in r_server.smembers('tags:%s' % controller_ip):
if r_server.hget('tag:%s:%s' % (controller_ip, tag_name), 'controller_ip') == controller_ip:
tag = {}
tag['name'] = tag_name
tag['address'] = r_server.hget('tag:%s:%s' % (controller_ip, tag_name), 'address')
tag['type'] = r_server.hget('tag:%s:%s' % (controller_ip, tag_name), 'type')
tag['controller_ip'] = r_server.hget('tag:%s:%s' % (controller_ip, tag_name), 'controller_ip')
tags.append(tag)
return tags
except RedisError:
return None
def delete_tag(tag_name, controller_ip):
try:
if r_server.sismember('tags:%s' % controller_ip, tag_name):
print('removing tag: %s, with ip: %s' % (tag_name, controller_ip))
r_server.srem('tags:%s' % controller_ip, tag_name)
r_server.delete('tag:%s:%s' % (controller_ip, tag_name))
if not r_server.smembers('tags:%s' % controller_ip):
r_server.srem('controllers', controller_ip)
print('No more tags for the controller, removing controller')
return True
else:
return False
except RedisError:
return False
