"""
try:
return func()
- except (ValidationError, exceptions.PolicyTypeAlreadyExists) as exc:
+ except (ValidationError, exceptions.PolicyTypeAlreadyExists, exceptions.CantDeleteNonEmptyType) as exc:
logger.exception(exc)
return "", 400
except (exceptions.PolicyTypeNotFound, exceptions.PolicyInstanceNotFound) as exc:
"""
Handles DELETE /a1-p/policytypes/policy_type_id
"""
- logger.error(policy_type_id)
- return "", 501
+
+ def delete_policy_type_handler():
+ data.delete_policy_type(policy_type_id)
+ return "", 204
+
+ return _try_func_return(delete_policy_type_handler)
# Policy instances
"""
Handles GET /a1-p/policytypes/policy_type_id/policies
"""
-
- def get_all_instance_handler():
- # try to clean up instances for this type
- for policy_instance_id in data.get_instance_list(policy_type_id):
- data.delete_policy_instance_if_applicable(policy_type_id, policy_instance_id)
-
- # re-fetch this list as it may have changed
- return data.get_instance_list(policy_type_id), 200
-
- return _try_func_return(get_all_instance_handler)
+ return _try_func_return(lambda: data.get_instance_list(policy_type_id))
def get_policy_instance(policy_type_id, policy_instance_id):
"""
Handles GET /a1-p/policytypes/polidyid/policies/policy_instance_id
"""
-
- def get_instance_handler():
- # delete if applicable (will raise if not applicable to begin with)
- data.delete_policy_instance_if_applicable(policy_type_id, policy_instance_id)
-
- # raise 404 now that we may have deleted, or get the instance otherwise
- return data.get_policy_instance(policy_type_id, policy_instance_id), 200
-
- return _try_func_return(get_instance_handler)
+ return _try_func_return(lambda: data.get_policy_instance(policy_type_id, policy_instance_id))
def get_policy_instance_status(policy_type_id, policy_instance_id):
"""
def get_status_handler():
- # delete if applicable (will raise if not applicable to begin with)
- data.delete_policy_instance_if_applicable(policy_type_id, policy_instance_id)
-
vector = data.get_policy_instance_statuses(policy_type_id, policy_instance_id)
for i in vector:
if i == "OK":
"""
here we send out the DELETEs but we don't delete the instance until a GET is called where we check the statuses
"""
+ data.instance_is_valid(policy_type_id, policy_instance_id)
+
# send rmr (best effort)
body = _gen_body_to_handler("DELETE", policy_type_id, policy_instance_id)
a1rmr.send(json.dumps(body), message_type=policy_type_id)
We use dict data structures (KV) with the expectation of having to move this into Redis
"""
import json
-from a1.exceptions import PolicyTypeNotFound, PolicyInstanceNotFound, PolicyTypeAlreadyExists
+from a1.exceptions import PolicyTypeNotFound, PolicyInstanceNotFound, PolicyTypeAlreadyExists, CantDeleteNonEmptyType
from a1 import get_module_logger
from a1 import a1rmr
D = "data"
+# Internal helpers
+
+
+def _get_statuses(policy_type_id, policy_instance_id):
+ """
+ shared helper to get statuses for an instance
+ """
+ instance_is_valid(policy_type_id, policy_instance_id)
+ return [v for _, v in POLICY_DATA[policy_type_id][I][policy_instance_id][H].items()]
+
+
+def _get_instance_list(policy_type_id):
+ """
+ shared helper to get instance list for a type
+ """
+ type_is_valid(policy_type_id)
+ return list(POLICY_DATA[policy_type_id][I].keys())
+
+
+def _clean_up_type(policy_type_id):
+ """
+ pop through a1s mailbox, updating a1s db of all policy statuses
+ for all instances of type, see if it can be deleted
+ """
+ type_is_valid(policy_type_id)
+ for msg in a1rmr.dequeue_all_waiting_messages([21024]):
+ # try to parse the messages as responses. Drop those that are malformed
+ pay = json.loads(msg["payload"])
+ if "policy_type_id" in pay and "policy_instance_id" in pay and "handler_id" in pay and "status" in pay:
+ """
+ NOTE: can't raise an exception here e.g.:
+ instance_is_valid(pti, pii)
+ because this is called on many functions; just drop bad status messages.
+ We def don't want bad messages that happen to hit a1s mailbox to blow up anything
+
+ NOTE2: we don't use the parameters "policy_type_id, policy_instance" from above here,
+ # because we are popping the whole mailbox, which might include other statuses
+ """
+ pti = pay["policy_type_id"]
+ pii = pay["policy_instance_id"]
+ if pti in POLICY_DATA and pii in POLICY_DATA[pti][I]: # manual check per comment above
+ POLICY_DATA[pti][I][pii][H][pay["handler_id"]] = pay["status"]
+ else:
+ logger.debug("Dropping message")
+ logger.debug(pay)
+
+ for policy_instance_id in _get_instance_list(policy_type_id):
+ # see if we can delete
+ vector = _get_statuses(policy_type_id, policy_instance_id)
+
+ """
+ TODO: not being able to delete if the list is [] is prolematic.
+ There are cases, such as a bad routing file, where this type will never be able to be deleted because it never went to any xapps
+ However, A1 cannot distinguish between the case where [] was never going to work, and the case where it hasn't worked *yet*
+
+ However, removing this constraint also leads to problems.
+ Deleting the instance when the vector is empty, for example doing so “shortly after” the PUT, can lead to a worse race condition where the xapps get the policy after that, implement it, but because the DELETE triggered “too soon”, you can never get the status or do the delete on it again, so the xapps are all implementing the instance roguely.
+
+ This requires some thought to address.
+ For now we stick with the "less bad problem".
+ """
+ if vector != []:
+ all_deleted = True
+ for i in vector:
+ if i != "DELETED":
+ all_deleted = False
+ break # have at least one not DELETED, do nothing
+
+ # blow away from a1 db
+ if all_deleted:
+ del POLICY_DATA[policy_type_id][I][policy_instance_id]
+
+
# Types
+def get_type_list():
+ """
+ retrieve all type ids
+ """
+ return list(POLICY_DATA.keys())
+
+
def type_is_valid(policy_type_id):
"""
check that a type is valid
POLICY_DATA[policy_type_id][I] = {}
-def get_policy_type(policy_type_id):
+def delete_policy_type(policy_type_id):
"""
- retrieve a type
+ delete a policy type; can only be done if there are no instances (business logic)
"""
- type_is_valid(policy_type_id)
- return POLICY_DATA[policy_type_id][D]
+ pil = get_instance_list(policy_type_id)
+ if pil == []: # empty, can delete
+ del POLICY_DATA[policy_type_id]
+ else:
+ raise CantDeleteNonEmptyType()
-def get_type_list():
+def get_policy_type(policy_type_id):
"""
- retrieve all type ids
+ retrieve a type
"""
- return list(POLICY_DATA.keys())
+ type_is_valid(policy_type_id)
+ return POLICY_DATA[policy_type_id][D]
# Instances
POLICY_DATA[policy_type_id][I][policy_instance_id][H] = {}
-def delete_policy_instance_if_applicable(policy_type_id, policy_instance_id):
- """
- delete a policy instance if all known statuses are DELETED
-
- pops a1s waiting mailbox
- """
- # pop through a1s mailbox, updating a1s db of all policy statuses
- for msg in a1rmr.dequeue_all_waiting_messages([21024]):
- # try to parse the messages as responses. Drop those that are malformed
- # NOTE: we don't use the parameters "policy_type_id, policy_instance" from above here,
- # because we are popping the whole mailbox, which might include other statuses
- pay = json.loads(msg["payload"])
- if "policy_type_id" in pay and "policy_instance_id" in pay and "handler_id" in pay and "status" in pay:
- set_policy_instance_status(pay["policy_type_id"], pay["policy_instance_id"], pay["handler_id"], pay["status"])
- else:
- logger.debug("Dropping message")
- logger.debug(pay)
-
- # raise if not valid
- instance_is_valid(policy_type_id, policy_instance_id)
-
- # see if we can delete
- vector = get_policy_instance_statuses(policy_type_id, policy_instance_id)
- if vector != []:
- all_deleted = True
- for i in vector:
- if i != "DELETED":
- all_deleted = False
- break # have at least one not DELETED, do nothing
-
- # blow away from a1 db
- if all_deleted:
- del POLICY_DATA[policy_type_id][I][policy_instance_id]
-
-
def get_policy_instance(policy_type_id, policy_instance_id):
"""
Retrieve a policy instance
"""
+ _clean_up_type(policy_type_id)
instance_is_valid(policy_type_id, policy_instance_id)
return POLICY_DATA[policy_type_id][I][policy_instance_id][D]
"""
Retrieve the status vector for a policy instance
"""
- instance_is_valid(policy_type_id, policy_instance_id)
-
- return [v for _, v in POLICY_DATA[policy_type_id][I][policy_instance_id][H].items()]
-
-
-def set_policy_instance_status(policy_type_id, policy_instance_id, handler_id, status):
- """
- Update the status of a handler id of a policy instance
- """
- instance_is_valid(policy_type_id, policy_instance_id)
-
- POLICY_DATA[policy_type_id][I][policy_instance_id][H][handler_id] = status
+ _clean_up_type(policy_type_id)
+ return _get_statuses(policy_type_id, policy_instance_id)
def get_instance_list(policy_type_id):
"""
retrieve all instance ids for a type
"""
- type_is_valid(policy_type_id)
- return list(POLICY_DATA[policy_type_id][I].keys())
+ _clean_up_type(policy_type_id)
+ return _get_instance_list(policy_type_id)
"""
+class CantDeleteNonEmptyType(BaseException):
+ """tried to delete a type that isn't empty"""
+
+
class PolicyInstanceNotFound(BaseException):
"""a policy instance cannot be found"""
# The Jenkins job uses this string for the tag in the image name
# for example nexus3.o-ran-sc.org:10004/my-image-name:my-tag
---
-tag: 0.14.1-NOT_FOR_USE_YET
+tag: 1.0.0
4) ``integration_tests/a1mediator/Chart.yaml``
-6) ``a1/openapi.yml`` (this is an API version, not a software version)
+6) ``a1/openapi.yaml`` (this is an API version, not a software version; no need to bump on patch changes)
7) in the it/dep repo that contains a1 helm chart, ``values.yaml``, ``Chart.yml``
The format is based on `Keep a Changelog <http://keepachangelog.com/>`__
and this project adheres to `Semantic Versioning <http://semver.org/>`__.
-[1.0.0] - TBD
+[1.1.0] - TBD
::
- * Release 1.0.0 will be the Release A version of A1
+ * Represents a resillent version of 1.0.0 that uses Redis for persistence
+
+
+[1.0.0] - 10/7/2019
+
+::
+
+ * Represents v1.0.0 of the A1 API for O-RAN-SC Release A
+ * Finished here:
+ - Implement type DELETE
+ - Clean up where policy instance cleanups happen
+
[0.14.1] - 10/2/2019
::
apiVersion: v1
description: A1 Helm chart for Kubernetes
name: a1mediator
-version: 0.14.1
+version: 1.0.0
response:
status_code: 404
- # PUT the instance and make sure subsequent GETs return properly
+ - name: bad body for admission control policy
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20000/policies/admission_control_policy
+ method: PUT
+ json:
+ not: "expected"
+ headers:
+ content-type: application/json
+ response:
+ status_code: 400
+
+ - name: not a json
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20000/policies/admission_control_policy
+ method: PUT
+ data: "asdf"
+ response:
+ status_code: 415
+
+ # put it properly
- name: put the admission control policy instance
request:
url: http://localhost:10000/a1-p/policytypes/20000/policies/admission_control_policy
response:
status_code: 202
+ - name: cant delete type with instances
+ delay_before: 3 # wait for the type acks to come back first
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20000
+ method: DELETE
+ response:
+ status_code: 400
+
- name: test the admission control policy get
request:
url: http://localhost:10000/a1-p/policytypes/20000/policies/admission_control_policy
response:
status_code: 404
+ - name: delete ac type
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20000
+ method: DELETE
+ response:
+ status_code: 204
+
+ - name: cant delete again
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20000
+ method: DELETE
+ response:
+ status_code: 404
+
+ - name: cant get
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20000
+ method: DELETE
+ response:
+ status_code: 404
+
+ - name: empty type list
+ request:
+ url: http://localhost:10000/a1-p/policytypes
+ method: GET
+ response:
+ status_code: 200
+ body: []
+
+
---
test_name: test the delay receiver
method: GET
response:
status_code: 200
- body: [20000]
+ body: []
- name: instance list 404
request:
response:
status_code: 200
body:
- - 20000
- 20001
- name: instance list 200 but empty
response:
status_code: 404
+ - name: bad body for delaytest
+ request:
+ url: http://localhost:10000/a1-p/policytypes/20001/policies/delaytest
+ method: PUT
+ json:
+ not: "welcome"
+ response:
+ status_code: 400
+
- name: create delay policy instance
request:
url: http://localhost:10000/a1-p/policytypes/20001/policies/delaytest
body:
test: foo
- - name: test the admission control policy status get
+ - name: test the delay status get
max_retries: 3
- delay_before: 5 # give it a few seconds for rmr ; delay reciever sleeps for 5 seconds by default
+ delay_before: 6 # give it a few seconds for rmr ; delay reciever sleeps for 5 seconds by default
request:
url: http://localhost:10000/a1-p/policytypes/20001/policies/delaytest/status
method: GET
status_code: 202
- name: should be no status
- delay_before: 5 # give it a few seconds for rmr ; delay reciever sleeps for 5 seconds by default
request:
url: http://localhost:10000/a1-p/policytypes/20002/policies/brokentest/status
method: GET
status_code: 200
body: []
+ # this one cant currently be deleted, see the comment in a1/data.py
---
response:
status_code: 404
-
- - name: bad instance get
+ - name: bad instance get bad type
request:
- url: http://localhost:10000/a1-p/policytypes/20000/policies/darkness
+ url: http://localhost:10000/a1-p/policytypes/20666/policies/nonono
method: GET
response:
status_code: 404
status_code: 400
-
-
- - name: bad body for admission control policy
- request:
- url: http://localhost:10000/a1-p/policytypes/20000/policies/admission_control_policy
- method: PUT
- json:
- not: "expected"
- headers:
- content-type: application/json
- response:
- status_code: 400
-
- - name: not a json
- request:
- url: http://localhost:10000/a1-p/policytypes/20000/policies/admission_control_policy
- method: PUT
- data: "asdf"
- response:
- status_code: 415
-
- - name: bad body for delaytest
- request:
- url: http://localhost:10000/a1-p/policytypes/20001/policies/delaytest
- method: PUT
- json:
- not: "welcome"
- response:
- status_code: 400
setup(
name="a1",
- version="0.14.1",
+ version="1.0.0",
packages=find_packages(exclude=["tests.*", "tests"]),
author="Tommy Carpenter",
description="RIC A1 Mediator for policy/intent changes",
# Actual Tests
-def test_xapp_put_good(client, monkeypatch, adm_type_good, adm_instance_good):
+def test_workflow(client, monkeypatch, adm_type_good, adm_instance_good):
""" test policy put good"""
# no type there yet
# create a good instance
_test_put_patch(monkeypatch)
+ # assert that rmr bad states don't cause problems
+ monkeypatch.setattr("rmr.rmr.rmr_send_msg", rmr_mocks.send_mock_generator(10))
res = client.put(ADM_CTRL_INSTANCE, json=adm_instance_good)
assert res.status_code == 202
monkeypatch.setattr("a1.a1rmr.dequeue_all_waiting_messages", _fake_dequeue)
get_instance_good("IN EFFECT")
+ # cant delete type until there are no instances
+ res = client.delete(ADM_CTRL_TYPE)
+ assert res.status_code == 400
+
# delete it
res = client.delete(ADM_CTRL_INSTANCE)
assert res.status_code == 202
assert res.status_code == 404
res = client.get(ADM_CTRL_INSTANCE) # cant get instance
assert res.status_code == 404
+
# list still 200 but no instance
res = client.get(ADM_CTRL_POLICIES)
assert res.status_code == 200
assert res.json == []
+ # delete the type
+ res = client.delete(ADM_CTRL_TYPE)
+ assert res.status_code == 204
-def test_xapp_put_good_bad_rmr(client, monkeypatch, adm_instance_good):
- """
- assert that rmr bad states don't cause problems
- """
- _test_put_patch(monkeypatch)
- monkeypatch.setattr("rmr.rmr.rmr_send_msg", rmr_mocks.send_mock_generator(10))
- res = client.put(ADM_CTRL_INSTANCE, json=adm_instance_good)
- assert res.status_code == 202
-
- monkeypatch.setattr("rmr.rmr.rmr_send_msg", rmr_mocks.send_mock_generator(5))
- res = client.put(ADM_CTRL_INSTANCE, json=adm_instance_good)
- assert res.status_code == 202
+ # cant touch this
+ res = client.get(ADM_CTRL_TYPE)
+ assert res.status_code == 404
+ res = client.delete(ADM_CTRL_TYPE)
+ assert res.status_code == 404
def test_bad_instances(client, monkeypatch, adm_type_good):
"""
- Test bad send failures
+ test various failure modes
"""
+ # put the type (needed for some of the tests below)
rmr_mocks.patch_rmr(monkeypatch)
-
- # TODO: reenable this after delete!
- # put the type
- # res = client.put(ADM_CTRL_TYPE, json=adm_type_good)
- # assert res.status_code == 201
-
- # illegal type range
- res = client.put("/a1-p/policytypes/19999", json=adm_type_good)
- assert res.status_code == 400
- res = client.put("/a1-p/policytypes/21024", json=adm_type_good)
- assert res.status_code == 400
+ res = client.put(ADM_CTRL_TYPE, json=adm_type_good)
+ assert res.status_code == 201
# bad body
res = client.put(ADM_CTRL_INSTANCE, json={"not": "expected"})
res = client.put(ADM_CTRL_INSTANCE, data="notajson")
assert res.status_code == 415
+ # delete a non existent instance
+ res = client.delete(ADM_CTRL_INSTANCE + "DARKNESS")
+ assert res.status_code == 404
+
+ # get a non existent instance
+ monkeypatch.setattr("a1.a1rmr.dequeue_all_waiting_messages", _fake_dequeue)
+ res = client.get(ADM_CTRL_INSTANCE + "DARKNESS")
+ assert res.status_code == 404
+
+ # delete the type (as cleanup)
+ res = client.delete(ADM_CTRL_TYPE)
+ assert res.status_code == 204
+
+
+def test_illegal_types(client, monkeypatch, adm_type_good):
+ """
+ Test illegal types
+ """
+ res = client.put("/a1-p/policytypes/19999", json=adm_type_good)
+ assert res.status_code == 400
+ res = client.put("/a1-p/policytypes/21024", json=adm_type_good)
+ assert res.status_code == 400
+
def test_healthcheck(client):
"""
Code Review / ric-plt / a1.git / commitdiff