def get_variable(self, variable_name, client=None):
"""API call: get a variable via a ``GET`` request.
This will return None if the variable doesn't exist::
>>> from google.cloud import runtimeconfig
>>> client = runtimeconfig.Client()
>>> config = client.get_config('my-config')
>>> print(config.get_varialbe('variable-name'))
<Variable: my-config, variable-name>
>>> print(config.get_variable('does-not-exist'))
None
:type variable_name: str
:param variable_name: The name of the variable to retrieve.
:type client: :class:`~google.cloud.runtimeconfig.client.Client`
:param client:
(Optional) The client to use. If not passed, falls back to the
``client`` stored on the current config.
:rtype: :class:`google.cloud.runtimeconfig.variable.Variable` or None
:returns: The variable object if it exists, otherwise None.
"""
client = self._require_client(client)
variable = Variable(config=self, name=variable_name)
try:
variable.reload(client=client)
return variable
except NotFound:
return None
def variable(self, variable_name):
"""Factory constructor for variable object.
.. note::
This will not make an HTTP request; it simply instantiates
a variable object owned by this config.
:type variable_name: str
:param variable_name: The name of the variable to be instantiated.
:rtype: :class:`google.cloud.runtimeconfig.variable.Variable`
:returns: The variable object created.
"""
return Variable(name=variable_name, config=self)