osc_lib.api package


osc_lib.api.api module

Base API Library

class osc_lib.api.api.BaseAPI(session=None, service_type=None, endpoint=None, **kwargs)

Bases: object

Base API wrapper for keystoneauth1.session.Session

Encapsulate the translation between keystoneauth1.session.Session and requests.Session in a single layer: * Restore some requests.session.Session compatibility;

keystoneauth1.session.Session.request() has the method and url arguments swapped from the rest of the requests-using world.
  • Provide basic endpoint handling when a Service Catalog is not available.
HEADER_NAME = 'OpenStack-API-Version'
create(url, session=None, method=None, **params)

Create a new resource

  • url (string) – The API-specific portion of the URL path
  • session (Session) – HTTP client session
  • method (string) – HTTP method (default POST)
delete(url, session=None, **params)

Delete a resource

  • url (string) – The API-specific portion of the URL path
  • session (Session) – HTTP client session
find(path, value=None, attr=None, headers=None)

Find a single resource by name or ID

  • path (string) – The API-specific portion of the URL path
  • value (string) – search expression (required, really)
  • attr (string) – name of attribute for secondary search
find_attr(path, value=None, attr=None, resource=None)

Find a resource via attribute or ID

Most APIs return a list wrapped by a dict with the resource name as key. Some APIs (Identity) return a dict when a query string is present and there is one return value. Take steps to unwrap these bodies and return a single dict without any resource wrappers.

  • path (string) – The API-specific portion of the URL path
  • value (string) – value to search for
  • attr (string) – attribute to use for resource search
  • resource (string) – plural of the object resource name; defaults to path
For example:
n = find(netclient, ‘network’, ‘networks’, ‘matrix’)
find_bulk(path, **kwargs)

Bulk load and filter locally

  • path (string) – The API-specific portion of the URL path
  • kwargs – A dict of AVPs to match - logical AND

list of resource dicts

find_one(path, **kwargs)

Find a resource by name or ID

Parameters:path (string) – The API-specific portion of the URL path
Returns:resource dict
list(path, session=None, body=None, detailed=False, headers=None, **params)

Return a list of resources


path is often the object’s plural resource type

  • path (string) – The API-specific portion of the URL path
  • session (Session) – HTTP client session
  • body – data that will be encoded as JSON and passed in POST request (GET will be sent by default)
  • detailed (bool) – Adds ‘/details’ to path for some APIs to return extended attributes

JSON-decoded response, could be a list or a dict-wrapped-list

osc_lib.api.auth module

Authentication Library


Auth plugins options builder

Builds dynamically the list of options expected by each available authentication plugin.

osc_lib.api.auth.check_valid_authentication_options(options, auth_plugin_name)

Validate authentication options, and provide helpful error messages

Parameters:required_scope – indicate whether a scoped token is required
osc_lib.api.auth.check_valid_authorization_options(options, auth_plugin_name)

Validate authorization options, and provide helpful error messages.

osc_lib.api.auth.get_keystone2keystone_auth(local_auth, service_provider, project_id=None, project_name=None, project_domain_id=None, project_domain_name=None)

Return Keystone 2 Keystone authentication for service provider.

  • local_auth – authentication to use with the local Keystone
  • service_provider – service provider id as registered in Keystone
  • project_id – project id to scope to in the service provider
  • project_name – project name to scope to in the service provider
  • project_domain_id – id of domain in the service provider
  • project_domain_name – name of domain to in the service provider

Keystone2Keystone auth object for service provider


Gather plugin options so the help action has them available


Gather plugin list and cache it

osc_lib.api.utils module

API Utilities Library

osc_lib.api.utils.simple_filter(data=None, attr=None, value=None, property_field=None)

Filter a list of dicts

  • data (list) – The list to be filtered. The list is modified in-place and will be changed if any filtering occurs.
  • attr (string) – The name of the attribute to filter. If attr does not exist no match will succeed and no rows will be returned. If attr is None no filtering will be performed and all rows will be returned.
  • value (string) – The value to filter. None is considered to be a ‘no filter’ value. ‘’ matches against a Python empty string.
  • property_field (string) – The name of the data field containing a property dict to filter. If property_field is None, attr is a field name. If property_field is not None, attr is a property key name inside the named property field.

Returns the filtered list

Rtype list:

This simple filter (one attribute, one exact-match value) searches a list of dicts to select items. It first searches the item dict for a matching attr then does an exact-match on the value. If property_field is given, it will look inside that field (if it exists and is a dict) for a matching value.

Module contents