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Find the most suitable mapper that the client wants and we support.
:returns: the preferred mapper based on the accept header or ``None``.
""""""
accepts = util.parse_accept_header(request.META.get(""HTTP_ACCEPT"", """"))
if not accepts:
return None
for accept in accepts:
if accept[0] in self._datamappers:
return accept[0]
raise errors.NotAcceptable()"
4609,"def _get_name_from_url(self, request):
"""""" Determine short name for the mapper based on the URL.
Short name can be either in query string (e.g. ?format=json)
or as an extension to the URL (e.g. myresource.json).
:returns: short name of the mapper or ``None`` if not found.
""""""
format = request.GET.get('format', None)
if not format:
match = self._format_query_pattern.match(request.path)
if match and match.group('format'):
format = match.group('format')
return format"
4610,"def _check_mapper(self, mapper):
"""""" Check that the mapper has valid signature. """"""
if not hasattr(mapper, 'parse') or not callable(mapper.parse):
raise ValueError('mapper must implement parse()')
if not hasattr(mapper, 'format') or not callable(mapper.format):
raise ValueError('mapper must implement format()')"
4611,"def setup_cluster(self, cluster, extra_args=tuple()):
""""""
Configure the cluster by running an Ansible playbook.
The ElastiCluster configuration attribute `<kind>_groups`
determines, for each node kind, what Ansible groups nodes of
that kind are assigned to.
:param cluster: cluster to configure
:type cluster: :py:class:`elasticluster.cluster.Cluster`
:param list extra_args:
List of additional command-line arguments
that are appended to each invocation of the setup program.
:return: ``True`` on success, ``False`` otherwise. Please note, if nothing
has to be configured, then ``True`` is returned.
:raises: `ConfigurationError` if the playbook can not be found
or is corrupt.
""""""
inventory_path = self._build_inventory(cluster)
if inventory_path is None:
# No inventory file has been created, maybe an
# invalid class has been specified in config file? Or none?
# assume it is fine.
elasticluster.log.info(""No setup required for this cluster."")
return True
assert os.path.exists(inventory_path), (
""inventory file `{inventory_path}` does not exist""
.format(inventory_path=inventory_path))
# build list of directories to search for roles/include files
ansible_roles_dirs = [
# include Ansible default first ...
'/etc/ansible/roles',
]
for root_path in [
# ... then ElastiCluster's built-in defaults
resource_filename('elasticluster', 'share/playbooks'),
# ... then wherever the playbook is
os.path.dirname(self._playbook_path),
]:
for path in [
root_path,
os.path.join(root_path, 'roles'),
]:
if path not in ansible_roles_dirs and os.path.exists(path):
ansible_roles_dirs.append(path)
# Use env vars to configure Ansible;
# see all values in https://github.com/ansible/ansible/blob/devel/lib/ansible/constants.py
#
# Ansible does not merge keys in configuration files: rather
# it uses the first configuration file found. However,
# environment variables can be used to selectively override
# parts of the config; according to [1]: ""they are mostly
# considered to be a legacy system as compared to the config
# file, but are equally valid.""
#
# [1]: http://docs.ansible.com/ansible/intro_configuration.html#environmental-configuration
#
# Provide default values for important configuration variables...
ansible_env = {