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endpoint.py
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endpoint.py
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# (c) 2017 DigitalOcean
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This file has been modified by NetworktoCode, LLC.
from typing import List, Dict, Any
from uuid import UUID
from pynautobot.core.query import Request, RequestError
from pynautobot.core.response import Record
RESERVED_KWARGS = ("pk", "limit", "offset")
def response_loader(req, return_obj, endpoint):
if isinstance(req, list):
return [return_obj(i, endpoint.api, endpoint) for i in req]
return return_obj(req, endpoint.api, endpoint)
class Endpoint(object):
"""Represent actions available on endpoints in the Nautobot API.
Takes `name` and `app` passed from `App()` and builds the correct
URL to make queries to and the proper Response object to return
results in.
Args:
api (object): Takes `Api` created at instantiation.
app (object): Takes `App`.
name (str): Name of endpoint passed to `App()`.
model (object, optional): Custom model for given app.
Note:
In order to call Nautobot endpoints with dashes in their
names you should convert the dash to an underscore.
(E.g. querying the ip-addresses endpoint is done with
`nb.ipam.ip_addresses.all()`.)
"""
def __init__(self, api, app, name, model=None):
self.return_obj = self._lookup_ret_obj(name, model)
self.name = name.replace("_", "-")
self.api = api
self.base_url = api.base_url
self.token = api.token
self.url = "{base_url}/{app}/{endpoint}".format(
base_url=self.base_url,
app=app.name,
endpoint=self.name,
)
self._choices = None
def _lookup_ret_obj(self, name, model):
"""Loads unique Response objects.
This method loads a unique response object for an endpoint if
it exists. Otherwise, it returns a generic `Record` object.
Args:
name (str): Endpoint name.
model (obj): The application model that contains unique Record objects.
Returns:
Record: Unique response object if exists, otherwise a generic `Record` object.
"""
if model:
name = name.title().replace("_", "").replace("-", "")
ret = getattr(model, name, Record)
else:
ret = Record
return ret
def all(self, api_version=None):
"""Queries the 'ListView' of a given endpoint.
Returns all objects from an endpoint.
Args:
api_version (str, optional): Override default or globally-set Nautobot REST API
version for this single request.
Returns:
list: List of :py:class:`.Record` objects.
Examples:
>>> nb.dcim.devices.all()
[test1-a3-oobsw2, test1-a3-oobsw3, test1-a3-oobsw4]
"""
api_version = api_version or self.api.api_version
req = Request(
base="{}/".format(self.url),
token=self.token,
http_session=self.api.http_session,
threading=self.api.threading,
max_workers=self.api.max_workers,
api_version=api_version,
)
return response_loader(req.get(), self.return_obj, self)
def get(self, *args, **kwargs):
"""Queries the DetailsView of a given endpoint.
Args:
key (int, optional): ID for the item to be retrieved.
**kwargs (str, optional): Accepts the same keyword args as filter().
Any search argument the endpoint accepts can be added as a keyword arg.
api_version (str, optional): Override default or globally-set Nautobot REST API
version for this single request.
Returns:
Union[Record, None]: A single :py:class:`.Record` object or None.
Raises:
ValueError: If kwarg search returns more than one value.
Examples:
Referencing with a kwarg that only returns one value.
>>> nb.dcim.devices.get(name='test1-a3-tor1b')
test1-a3-tor1b
Referencing with an id.
>>> nb.dcim.devices.get(1)
test1-edge1
"""
try:
key = args[0]
except IndexError:
key = None
is_api_version = kwargs.pop("api_version") if kwargs.get("api_version") else None
api_version = is_api_version or self.api.api_version
if not key:
filter_lookup = self.filter(**kwargs)
if filter_lookup:
if len(filter_lookup) > 1:
raise ValueError(
"get() returned more than one result. "
"Check that the kwarg(s) passed are valid for this "
"endpoint or use filter() or all() instead."
)
else:
return filter_lookup[0]
return None
req = Request(
key=key,
base=self.url,
token=self.token,
http_session=self.api.http_session,
api_version=api_version,
)
try:
resp = req.get()
except RequestError as e:
if e.req.status_code == 404:
return None
else:
raise e
return response_loader(resp, self.return_obj, self)
def filter(self, *args, api_version=None, **kwargs):
"""Queries the 'ListView' of a given endpoint.
Takes named arguments that match the usable filters on a
given endpoint. If an argument is passed then it's used as a
freeform search argument if the endpoint supports it.
Args:
*args (str, optional): Freeform search string that's
accepted on given endpoint.
**kwargs (str, optional): Any search argument the
endpoint accepts can be added as a keyword arg.
api_version (str, optional): Override default or globally-set
Nautobot REST API version for this single request.
Returns:
list: A list of :py:class:`.Record` objects.
Examples:
To return a list of objects matching a named argument filter.
>>> nb.dcim.devices.filter(role='leaf-switch')
[test1-a3-tor1b, test1-a3-tor1c, test1-a3-tor1d, test1-a3-tor2a]
Using a freeform query along with a named argument.
>>> nb.dcim.devices.filter('a3', role='leaf-switch')
[test1-a3-tor1b, test1-a3-tor1c, test1-a3-tor1d, test1-a3-tor2a]
Chaining multiple named arguments.
>>> nb.dcim.devices.filter(role='leaf-switch', status=True)
[test1-leaf2]
Passing a list as a named argument adds multiple filters of the
same value.
>>> nb.dcim.devices.filter(role=['leaf-switch', 'spine-switch'])
[test1-a3-spine1, test1-a3-spine2, test1-a3-leaf1]
"""
if args:
kwargs.update({"q": args[0]})
if not kwargs:
raise ValueError("filter must be passed kwargs. Perhaps use all() instead.")
if any(i in RESERVED_KWARGS for i in kwargs):
raise ValueError("A reserved {} kwarg was passed. Please remove it " "try again.".format(RESERVED_KWARGS))
api_version = api_version or self.api.api_version
req = Request(
filters=kwargs,
base=self.url,
token=self.token,
http_session=self.api.http_session,
threading=self.api.threading,
api_version=api_version,
)
return response_loader(req.get(), self.return_obj, self)
def create(self, *args, api_version=None, **kwargs):
"""Creates an object on an endpoint.
Allows for the creation of new objects on an endpoint. Named
arguments are converted to JSON properties, and a single object
is created. Nautobot's bulk creation capabilities can be used by
passing a list of dictionaries as the first argument.
Note:
Any positional arguments will supersede named ones.
Args:
*args (list): A list of dictionaries containing the
properties of the objects to be created.
**kwargs (str): Key/value strings representing
properties on a JSON object.
api_version (str, optional): Override default or globally-set
Nautobot REST API version for this single request.
Returns:
Union[Record, List[Record]]: A list or single :py:class:`.Record` object depending
on whether a bulk creation was requested.
Examples:
Creating an object on the `devices` endpoint you can look up a
device_role's name with:
>>> nautobot.dcim.devices.create(
... name='test',
... device_role=1,
... )
Use bulk creation by passing a list of dictionaries:
>>> nb.dcim.devices.create([
... {
... "name": "test1-core3",
... "device_role": 3,
... "site": 1,
... "device_type": 1,
... "status": 1
... },
... {
... "name": "test1-core4",
... "device_role": 3,
... "site": 1,
... "device_type": 1,
... "status": 1
... }
... ])
"""
api_version = api_version or self.api.api_version
req = Request(
base=self.url,
token=self.token,
http_session=self.api.http_session,
api_version=api_version,
).post(args[0] if args else kwargs)
return response_loader(req, self.return_obj, self)
def update(self, *args, **kwargs):
"""Update a single resource with a dictionary or bulk update a list of objects.
Allows for bulk updating of existing objects on an endpoint.
Objects is a list which contain either JSON/dicts or Record
derived objects, which contain the updates to apply.
If JSON/dicts are used, then the id of the object *must* be
included.
Args:
*args (list, optional): A list of dicts or a list of Record.
**kwargs (str, optional): See Below.
Keyword Arguments:
* *id* (``string``) -- Identifier of the object being updated.
* *data* (``dict``) -- Key/value pairs to update the record object with.
Returns:
Union[Record, List[Record]]: A list or single :py:class:`.Record` object depending
on whether a bulk update was requested.
Examples:
Accepts the id of the object that needs to be updated as well as a
dictionary of k/v pairs used to update an object.
>>> nb.dcim.devices.update(id="0238a4e3-66f2-455a-831f-5f177215de0f", data={
... "name": "test",
... "serial": "1234",
... "location": "9b1f53c7-89fa-4fb2-a89a-b97364fef50c",
... })
Use bulk update by passing a list of dicts:
>>> devices = nb.dcim.devices.update([
... {'id': "db8770c4-61e5-4999-8372-e7fa576a4f65", 'name': 'test'},
... {'id': "e9b5f2e0-4f20-41ad-9179-90a4987f743e", 'name': 'test2'},
... ])
Use bulk update by passing a list of Records:
>>> devices = list(nb.dcim.devices.filter())
>>> devices
[Device1, Device2, Device3]
>>> for d in devices:
... d.name = d.name+'-test'
...
>>> nb.dcim.devices.update(devices)
"""
if not args and not kwargs:
raise ValueError("You must provide either a UUID and data dict or a list of objects to update")
uuid = kwargs.get("id", "")
data = kwargs.get("data", {})
if data and not uuid:
uuid = args[0]
if len(args) == 2:
uuid, data = args
if not any([uuid, data]):
return self.bulk_update(args[0])
req = Request(
key=uuid,
base=self.url,
token=self.api.token,
http_session=self.api.http_session,
api_version=self.api.api_version,
)
if req.patch(data):
return True
return False
def bulk_update(self, objects: List[Dict[str, Any]]):
"""This method is called from the update() method if a bulk
update is detected.
Allows for bulk updating of existing objects on an endpoint.
Objects is a list which contain either JSON/dicts or Record
derived objects, which contain the updates to apply.
If JSON/dicts are used, then the id of the object *must* be
included.
Args:
objects (list): A list of dicts or a list of Record.
"""
if not isinstance(objects, list):
raise ValueError("objects must be a list[dict()|Record] not " + str(type(objects)))
bulk_data = []
for o in objects:
try:
if isinstance(o, dict):
bulk_data.append(o)
elif isinstance(o, Record):
if not hasattr(o, "id"):
raise ValueError("'Record' object has no attribute 'id'")
updates = o.updates()
if updates:
updates["id"] = o.id
bulk_data.append(updates)
else:
raise ValueError("Invalid object type: " + str(type(o)))
except ValueError as exc:
raise ValueError("Unexpected value in object list") from exc
req = Request(
base=self.url,
token=self.api.token,
http_session=self.api.http_session,
api_version=self.api.api_version,
).patch(bulk_data)
return response_loader(req, self.return_obj, self)
def delete(self, objects):
"""Bulk deletes objects on an endpoint.
Allows for batch deletion of multiple objects from
a single endpoint.
Args:
objects (list): A list of either IDs or Records to delete.
Returns:
bool: True if bulk DELETE operation was successful.
Examples:
Deleting all `devices`:
>>> pynautobot.dcim.devices.delete(pynautobot.dcim.devices.all())
Use bulk deletion by passing a list of IDs:
>>> pynautobot.dcim.devices.delete([
... "db8770c4-61e5-4999-8372-e7fa576a4f65",
... "e9b5f2e0-4f20-41ad-9179-90a4987f743e"
... ])
Use bulk deletion to delete objects e.g. when filtering
on a `custom_field`:
>>> pynautobot.dcim.devices.delete([
... d for d in pynautobot.dcim.devices.all()
... if d.custom_fields.get("field", False)
... ])
"""
ids = []
if not isinstance(objects, list):
raise ValueError("objects must be a list[str(id)|Record] not " + str(type(objects)))
for o in objects:
try:
if isinstance(o, str):
if UUID(o):
ids.append(o)
elif isinstance(o, Record):
if not hasattr(o, "id"):
raise ValueError("'Record' object has no attribute 'id'")
ids.append(o.id)
else:
raise ValueError("Invalid object type: " + str(type(o)))
except ValueError as exc:
raise ValueError("Unexpected value in object list") from exc
req = Request(
base=self.url,
token=self.token,
http_session=self.api.http_session,
api_version=self.api.api_version,
)
return req.delete(data=[{"id": id} for id in ids])
def choices(self, api_version=None):
"""Returns all choices from the endpoint.
The returned dict is also saved in the endpoint object (in
``_choices`` attribute) so that later calls will return the same data
without recurring requests to Nautobot. When using ``.choices()`` in
long-running applications, consider restarting them whenever Nautobot is
upgraded, to prevent using stale choices data.
Args:
api_version (str, optional): Override default or globally-set
Nautobot REST API version for this single request.
Returns:
dict: Dict containing the available choices.
Example (from Nautobot 2.8.x):
>>> from pprint import pprint
>>> pprint(nb.ipam.ip_addresses.choices())
{'role': [{'display_name': 'Loopback', 'value': 'loopback'},
{'display_name': 'Secondary', 'value': 'secondary'},
{'display_name': 'Anycast', 'value': 'anycast'},
{'display_name': 'VIP', 'value': 'vip'},
{'display_name': 'VRRP', 'value': 'vrrp'},
{'display_name': 'HSRP', 'value': 'hsrp'},
{'display_name': 'GLBP', 'value': 'glbp'},
{'display_name': 'CARP', 'value': 'carp'}],
'status': [{'display_name': 'Active', 'value': 'active'},
{'display_name': 'Reserved', 'value': 'reserved'},
{'display_name': 'Deprecated', 'value': 'deprecated'},
{'display_name': 'DHCP', 'value': 'dhcp'}]}
"""
if self._choices:
return self._choices
api_version = api_version or self.api.api_version
req = Request(
base=self.url,
token=self.api.token,
http_session=self.api.http_session,
api_version=api_version,
).options()
try:
post_data = req["schema"]["properties"]
except (KeyError, TypeError):
raise ValueError(f"Unexpected format in the OPTIONS response at {self.url}")
self._choices = {
prop: [{"value": x, "display": y} for x, y in zip(post_data[prop]["enum"], post_data[prop]["enumNames"])]
for prop in post_data
if "enum" in post_data[prop]
}
return self._choices
def count(self, *args, api_version=None, **kwargs):
"""Returns the count of objects in a query.
Takes named arguments that match the usable filters on a
given endpoint. If an argument is passed then it's used as a
freeform search argument if the endpoint supports it. If no
arguments are passed the count for all objects on an endpoint
are returned.
Args:
*args (str, optional): Freeform search string that's
accepted on given endpoint.
**kwargs (str, optional): Any search argument the
endpoint accepts can be added as a keyword arg.
api_version (str, optional): Override default or globally-set
Nautobot REST API version for this single request.
Returns:
int: Integer with count of objects returned by query.
Examples:
To return a count of objects matching a named argument filter.
>>> nb.dcim.devices.count(site='tst1')
5827
To return a count of objects on an entire endpoint.
>>> nb.dcim.devices.count()
87382
"""
if args:
kwargs.update({"q": args[0]})
if any(i in RESERVED_KWARGS for i in kwargs):
raise ValueError("A reserved {} kwarg was passed. Please remove it " "try again.".format(RESERVED_KWARGS))
api_version = api_version or self.api.api_version
ret = Request(
filters=kwargs, base=self.url, token=self.token, http_session=self.api.http_session, api_version=api_version
)
return ret.get_count()
class DetailEndpoint(object):
"""Enables read/write Operations on detail endpoints.
Endpoints like ``available-ips`` that are detail routes off
traditional endpoints are handled with this class.
"""
def __init__(self, parent_obj, name, custom_return=None):
self.parent_obj = parent_obj
self.custom_return = custom_return
self.url = "{}/{}/{}/".format(parent_obj.endpoint.url, parent_obj.id, name)
self.request_kwargs = dict(
base=self.url,
token=parent_obj.api.token,
http_session=parent_obj.api.http_session,
)
def list(self, api_version=None, **kwargs):
"""The view operation for a detail endpoint.
Returns the response from Nautobot for a detail endpoint.
Args:
api_version (str, optional): Override default or globally set Nautobot REST API version for this single request.
**kwargs: Key/value pairs that get converted into URL parameters when passed to the endpoint.
E.g. ``.list(method='get_facts')`` would be converted to ``.../?method=get_facts``.
Returns:
Union[Dict, List[Dict]]: A dictionary or list of dictionaries retrieved from Nautobot.
"""
api_version = api_version or self.parent_obj.api.api_version
req = Request(api_version=api_version, **self.request_kwargs).get(add_params=kwargs)
if self.custom_return:
return response_loader(req, self.custom_return, self.parent_obj.endpoint)
return req
def create(self, data=None, api_version=None):
"""The write operation for a detail endpoint.
Creates objects on a detail endpoint in Nautobot.
Args:
data (dict or list, optional): A dictionary containing the
key/value pairs of the items you're creating on the parent
object. Defaults to an empty dict, which will create a single
item with default values.
api_version (str, optional): Override default or globally set
Nautobot REST API version for this single request.
Returns:
Union[Dict, List[Dict]]: A dictionary or list of dictionaries representing
the items created in Nautobot.
"""
data = data or {}
api_version = api_version or self.parent_obj.api.api_version
req = Request(api_version=api_version, **self.request_kwargs).post(data)
if self.custom_return:
return response_loader(req, self.custom_return, self.parent_obj.endpoint)
return req
class RODetailEndpoint(DetailEndpoint):
def create(self, data=None, api_version=None):
raise NotImplementedError("Writes are not supported for this endpoint.")
class JobsEndpoint(Endpoint):
"""Extend Endpoint class to support run method only for jobs."""
def run(self, *args, api_version=None, **kwargs):
"""Runs a job based on the class_path provided to the job.
Takes a kwarg of `class_path` or `job_id` to specify the job that should be run.
Args:
*args (str, optional): Freeform search string that's
accepted on given endpoint.
**kwargs (str, optional): Any search argument the
endpoint accepts can be added as a keyword arg.
api_version (str, optional): Override default or globally-set
Nautobot REST API version for this single request.
Returns:
obj: Job details: job_result object uuid found at `obj.result.id`.
Examples:
To run a job for verifying hostnames:
>>> nb.extras.jobs.run(
class_path="local/data_quality/VerifyHostnames",
data={"hostname_regex": ".*"},
commit=True,
)
"""
api_version = api_version or self.api.api_version or self.api.version
# Check Nautobot Version as API version can be `None`. Job run endpoints changed in 1.3.
if float(api_version) < 1.3:
if not kwargs.get("class_path"):
raise ValueError(
'Keyword Argument "class_path" is required to run a job in Nautobot APIv1.2 and older.'
)
job_run_url = f"{self.url}/{kwargs['class_path']}/run/"
else:
if not kwargs.get("job_id"):
raise ValueError('Keyword Argument "job_id" is required to run a job in Nautobot APIv1.3 and newer.')
job_run_url = f"{self.url}/{kwargs['job_id']}/run/"
req = Request(
base=job_run_url,
token=self.token,
http_session=self.api.http_session,
api_version=api_version,
).post(args[0] if args else kwargs)
return response_loader(req, self.return_obj, self)