def link_database(
scheme,
database_host,
port='',
username='',
password='',
database_name='',
variable_name='DATABASE_URL'
):
"""
Create a link with a database by setting an environment variable
The variable will be "DATABASE_URL" by default
"""
database_url = build_url(
scheme=scheme,
domain=database_host,
port=port,
username=username,
password=password,
path=database_name
)
update_property_in_json_file(
env_file_path, variable_name, database_url
)
# Relation changed - re-run update target
update_target()
# Reset wsgi relation settings
wsgi_relation()
def webservice_relation():
"""
Create "WEBSERVICE_URL" environment variable from relation
"""
log('Function: webservice_relation')
http_protocol = relation_get('http_protocol') or 'http'
address = relation_get('private-address')
hostname = relation_get('hostname') or address
# If hostname is IP address or FQDN, use it
# otherwise use private_address
ip_regex = re.compile(
(
r"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.)"
r"{3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$"
)
)
hostname_regex = re.compile(
(
r"^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)+"
r"([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$"
)
)
if hostname_regex.match(hostname) or ip_regex.match(hostname):
domain = hostname
else:
domain = address
webservice_url = build_url(
scheme=http_protocol,
domain=domain,
port=relation_get("port")
)
update_property_in_json_file(
env_file_path, 'WEBSERVICE_URL', webservice_url
)
# Relation changed - re-run update target
update_target()
# Reset wsgi relation settings
wsgi_relation()