aboutsummaryrefslogtreecommitdiffstats
path: root/apps/placement/optimizers
diff options
context:
space:
mode:
authorvrvarma <vv8305@att.com>2019-12-13 10:24:55 -0500
committervrvarma <vv8305@att.com>2019-12-13 10:29:45 -0500
commit430153e1a9489a86cf0ff7942eceb0bf5f1c170c (patch)
treeb22090b80d11761a24d9cbeaa6348704cce2de83 /apps/placement/optimizers
parent34ba229b31758c38a299a163de0007848b5921be (diff)
osdf rearchitecture into apps and libs
Change-Id: I2db2f8e252bd5e60807b2ffabf5a5b193a789f7a Signed-off-by: vrvarma <vv8305@att.com> Issue-ID: OPTFRA-637
Diffstat (limited to 'apps/placement/optimizers')
-rw-r--r--apps/placement/optimizers/__init__.py0
-rw-r--r--apps/placement/optimizers/conductor/__init__.py17
-rw-r--r--apps/placement/optimizers/conductor/api_builder.py99
-rwxr-xr-xapps/placement/optimizers/conductor/conductor.py202
-rw-r--r--apps/placement/optimizers/conductor/remote_opt_processor.py81
-rw-r--r--apps/placement/optimizers/conductor/translation.py283
6 files changed, 682 insertions, 0 deletions
diff --git a/apps/placement/optimizers/__init__.py b/apps/placement/optimizers/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/apps/placement/optimizers/__init__.py
diff --git a/apps/placement/optimizers/conductor/__init__.py b/apps/placement/optimizers/conductor/__init__.py
new file mode 100644
index 0000000..4b25e5b
--- /dev/null
+++ b/apps/placement/optimizers/conductor/__init__.py
@@ -0,0 +1,17 @@
+# -------------------------------------------------------------------------
+# Copyright (c) 2017-2018 AT&T Intellectual Property
+#
+# 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.
+#
+# -------------------------------------------------------------------------
+#
diff --git a/apps/placement/optimizers/conductor/api_builder.py b/apps/placement/optimizers/conductor/api_builder.py
new file mode 100644
index 0000000..7b61580
--- /dev/null
+++ b/apps/placement/optimizers/conductor/api_builder.py
@@ -0,0 +1,99 @@
+# -------------------------------------------------------------------------
+# Copyright (c) 2015-2017 AT&T Intellectual Property
+#
+# 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.
+#
+# -------------------------------------------------------------------------
+#
+
+import json
+
+from jinja2 import Template
+
+import apps.placement.optimizers.conductor.translation as tr
+from osdf.adapters.policy.utils import group_policies_gen
+from osdf.utils.programming_utils import list_flatten
+
+
+def _build_parameters(group_policies, request_json):
+ """
+ Function prepares parameters section for has request
+ :param group_policies: filtered policies
+ :param request_json: parameter data received from a client
+ :return:
+ """
+ initial_params = tr.get_opt_query_data(request_json, group_policies['request_param_query'])
+ params = dict()
+ params.update({"REQUIRED_MEM": initial_params.pop("requiredMemory", "")})
+ params.update({"REQUIRED_DISK": initial_params.pop("requiredDisk", "")})
+ params.update({"customer_lat": initial_params.pop("customerLatitude", 0.0)})
+ params.update({"customer_long": initial_params.pop("customerLongitude", 0.0)})
+ params.update({"service_name": request_json['serviceInfo']['serviceName']})
+ params.update({"service_id": request_json['serviceInfo']['serviceInstanceId']})
+
+ for key, val in initial_params.items():
+ if val and val != "":
+ params.update({key: val})
+
+ return params
+
+
+def conductor_api_builder(request_json, flat_policies: list, local_config,
+ template="apps/placement/templates/conductor_interface.json"):
+ """Build an OSDF southbound API call for HAS-Conductor/Placement optimization
+ :param request_json: parameter data received from a client
+ :param flat_policies: policy data received from the policy platform (flat policies)
+ :param template: template to generate southbound API call to conductor
+ :param local_config: local configuration file with pointers for the service specific information
+ :param prov_status: provStatus retrieved from Subscriber policy
+ :return: json to be sent to Conductor/placement optimization
+ """
+ templ = Template(open(template).read())
+ gp = group_policies_gen(flat_policies, local_config)
+ demand_vnf_name_list = []
+
+ for placementDemand in request_json['placementInfo']['placementDemands']:
+ demand_vnf_name_list.append(placementDemand['resourceModuleName'].lower())
+ demand_list = tr.gen_demands(request_json, gp['vnfPolicy'])
+ attribute_policy_list = tr.gen_attribute_policy(demand_vnf_name_list, gp['attribute'])
+ distance_to_location_policy_list = tr.gen_distance_to_location_policy(
+ demand_vnf_name_list, gp['distance_to_location'])
+ inventory_policy_list = tr.gen_inventory_group_policy(demand_vnf_name_list, gp['inventory_group'])
+ resource_instance_policy_list = tr.gen_resource_instance_policy(
+ demand_vnf_name_list, gp['instance_fit'])
+ resource_region_policy_list = tr.gen_resource_region_policy(demand_vnf_name_list, gp['region_fit'])
+ zone_policy_list = tr.gen_zone_policy(demand_vnf_name_list, gp['zone'])
+ optimization_policy_list = tr.gen_optimization_policy(demand_vnf_name_list, gp['placement_optimization'])
+ reservation_policy_list = tr.gen_reservation_policy(demand_vnf_name_list, gp['instance_reservation'])
+ capacity_policy_list = tr.gen_capacity_policy(demand_vnf_name_list, gp['vim_fit'])
+ hpa_policy_list = tr.gen_hpa_policy(demand_vnf_name_list, gp['hpa'])
+ req_params_dict = _build_parameters(gp, request_json)
+ conductor_policies = [attribute_policy_list, distance_to_location_policy_list, inventory_policy_list,
+ resource_instance_policy_list, resource_region_policy_list, zone_policy_list,
+ reservation_policy_list, capacity_policy_list, hpa_policy_list]
+ filtered_policies = [x for x in conductor_policies if len(x) > 0]
+ policy_groups = list_flatten(filtered_policies)
+ req_info = request_json['requestInfo']
+ request_type = req_info.get('requestType', None)
+ rendered_req = templ.render(
+ requestType=request_type,
+ demand_list=demand_list,
+ policy_groups=policy_groups,
+ optimization_policies=optimization_policy_list,
+ name=req_info['requestId'],
+ timeout=req_info['timeout'],
+ limit=req_info['numSolutions'],
+ request_params=req_params_dict,
+ json=json)
+ json_payload = json.dumps(json.loads(rendered_req)) # need this because template's JSON is ugly!
+ return json_payload
diff --git a/apps/placement/optimizers/conductor/conductor.py b/apps/placement/optimizers/conductor/conductor.py
new file mode 100755
index 0000000..05d1641
--- /dev/null
+++ b/apps/placement/optimizers/conductor/conductor.py
@@ -0,0 +1,202 @@
+# -------------------------------------------------------------------------
+# Copyright (c) 2015-2017 AT&T Intellectual Property
+#
+# 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 application generates conductor API calls using the information received from SO and Policy platform.
+"""
+
+import json
+import time
+
+from jinja2 import Template
+from requests import RequestException
+
+from apps.placement.optimizers.conductor.api_builder import conductor_api_builder
+from osdf.logging.osdf_logging import debug_log
+from osdf.utils.interfaces import RestClient
+from osdf.operation.exceptions import BusinessException
+
+
+def request(req_object, osdf_config, flat_policies):
+ """
+ Process a placement request from a Client (build Conductor API call, make the call, return result)
+ :param req_object: Request parameters from the client
+ :param osdf_config: Configuration specific to SNIRO application (core + deployment)
+ :param flat_policies: policies related to placement (fetched based on request)
+ :param prov_status: provStatus retrieved from Subscriber policy
+ :return: response from Conductor (accounting for redirects from Conductor service
+ """
+ config = osdf_config.deployment
+ local_config = osdf_config.core
+ uid, passwd = config['conductorUsername'], config['conductorPassword']
+ conductor_url = config['conductorUrl']
+ req_id = req_object['requestInfo']['requestId']
+ transaction_id = req_object['requestInfo']['transactionId']
+ headers = dict(transaction_id=transaction_id)
+ placement_ver_enabled = config.get('placementVersioningEnabled', False)
+
+ if placement_ver_enabled:
+ cond_minor_version = config.get('conductorMinorVersion', None)
+ if cond_minor_version is not None:
+ x_minor_version = str(cond_minor_version)
+ headers.update({'X-MinorVersion': x_minor_version})
+ debug_log.debug("Versions set in HTTP header to conductor: X-MinorVersion: {} ".format(x_minor_version))
+
+ max_retries = config.get('conductorMaxRetries', 30)
+ ping_wait_time = config.get('conductorPingWaitTime', 60)
+
+ rc = RestClient(userid=uid, passwd=passwd, method="GET", log_func=debug_log.debug, headers=headers)
+ conductor_req_json_str = conductor_api_builder(req_object, flat_policies, local_config)
+ conductor_req_json = json.loads(conductor_req_json_str)
+
+ debug_log.debug("Sending first Conductor request for request_id {}".format(req_id))
+ resp, raw_resp = initial_request_to_conductor(rc, conductor_url, conductor_req_json)
+ # Very crude way of keeping track of time.
+ # We are not counting initial request time, first call back, or time for HTTP request
+ total_time, ctr = 0, 2
+ client_timeout = req_object['requestInfo']['timeout']
+ configured_timeout = max_retries * ping_wait_time
+ max_timeout = min(client_timeout, configured_timeout)
+
+ while True: # keep requesting conductor till we get a result or we run out of time
+ if resp is not None:
+ if resp["plans"][0].get("status") in ["error"]:
+ raise RequestException(response=raw_resp, request=raw_resp.request)
+
+ if resp["plans"][0].get("status") in ["done", "not found"]:
+ if resp["plans"][0].get("recommendations"):
+ return conductor_response_processor(resp, raw_resp, req_id)
+ else: # "solved" but no solutions found
+ return conductor_no_solution_processor(resp, raw_resp, req_id)
+ new_url = resp['plans'][0]['links'][0][0]['href'] # TODO: check why a list of lists
+
+ if total_time >= max_timeout:
+ raise BusinessException("Conductor could not provide a solution within {} seconds,"
+ "this transaction is timing out".format(max_timeout))
+ time.sleep(ping_wait_time)
+ ctr += 1
+ debug_log.debug("Attempt number {} url {}; prior status={}".format(ctr, new_url, resp['plans'][0]['status']))
+ total_time += ping_wait_time
+
+ try:
+ raw_resp = rc.request(new_url, raw_response=True)
+ resp = raw_resp.json()
+ except RequestException as e:
+ debug_log.debug("Conductor attempt {} for request_id {} has failed because {}".format(ctr, req_id, str(e)))
+
+
+def initial_request_to_conductor(rc, conductor_url, conductor_req_json):
+ """First steps in the request-redirect chain in making a call to Conductor
+ :param rc: REST client object for calling conductor
+ :param conductor_url: conductor's base URL to submit a placement request
+ :param conductor_req_json: request json object to send to Conductor
+ :return: URL to check for follow up (similar to redirects); we keep checking these till we get a result/error
+ """
+ debug_log.debug("Payload to Conductor: {}".format(json.dumps(conductor_req_json)))
+ raw_resp = rc.request(url=conductor_url, raw_response=True, method="POST", json=conductor_req_json)
+ resp = raw_resp.json()
+ if resp["status"] != "template":
+ raise RequestException(response=raw_resp, request=raw_resp.request)
+ time.sleep(10) # 10 seconds wait time to avoid being too quick!
+ plan_url = resp["links"][0][0]["href"]
+ debug_log.debug("Attempting to read the plan from the conductor provided url {}".format(plan_url))
+ raw_resp = rc.request(raw_response=True, url=plan_url) # TODO: check why a list of lists for links
+ resp = raw_resp.json()
+
+ if resp["plans"][0]["status"] in ["error"]:
+ raise RequestException(response=raw_resp, request=raw_resp.request)
+ return resp, raw_resp # now the caller of this will handle further follow-ups
+
+
+def conductor_response_processor(conductor_response, raw_response, req_id):
+ """Build a response object to be sent to client's callback URL from Conductor's response
+ This includes Conductor's placement optimization response, and required ASDC license artifacts
+
+ :param conductor_response: JSON response from Conductor
+ :param raw_response: Raw HTTP response corresponding to above
+ :param req_id: Id of a request
+ :return: JSON object that can be sent to the client's callback URL
+ """
+ composite_solutions = []
+ name_map = {"physical-location-id": "cloudClli", "host_id": "vnfHostName",
+ "cloud_version": "cloudVersion", "cloud_owner": "cloudOwner",
+ "cloud": "cloudRegionId", "service": "serviceInstanceId", "is_rehome": "isRehome",
+ "location_id": "locationId", "location_type": "locationType", "directives": "oof_directives"}
+ for reco in conductor_response['plans'][0]['recommendations']:
+ for resource in reco.keys():
+ c = reco[resource]['candidate']
+ solution = {
+ 'resourceModuleName': resource,
+ 'serviceResourceId': reco[resource].get('service_resource_id', ""),
+ 'solution': {"identifierType": name_map.get(c['inventory_type'], c['inventory_type']),
+ 'identifiers': [c['candidate_id']],
+ 'cloudOwner': c.get('cloud_owner', "")},
+ 'assignmentInfo': []
+ }
+ for key, value in c.items():
+ if key in ["location_id", "location_type", "is_rehome", "host_id"]:
+ try:
+ solution['assignmentInfo'].append({"key": name_map.get(key, key), "value": value})
+ except KeyError:
+ debug_log.debug("The key[{}] is not mapped and will not be returned in assignment info".format(key))
+
+ for key, value in reco[resource]['attributes'].items():
+ try:
+ solution['assignmentInfo'].append({"key": name_map.get(key, key), "value": value})
+ except KeyError:
+ debug_log.debug("The key[{}] is not mapped and will not be returned in assignment info".format(key))
+ composite_solutions.append(solution)
+
+ request_status = "completed" if conductor_response['plans'][0]['status'] == "done" \
+ else conductor_response['plans'][0]['status']
+ transaction_id = raw_response.headers.get('transaction_id', "")
+ status_message = conductor_response.get('plans')[0].get('message', "")
+
+ solution_info = {}
+ if composite_solutions:
+ solution_info.setdefault('placementSolutions', [])
+ solution_info['placementSolutions'].append(composite_solutions)
+
+ resp = {
+ "transactionId": transaction_id,
+ "requestId": req_id,
+ "requestStatus": request_status,
+ "statusMessage": status_message,
+ "solutions": solution_info
+ }
+ return resp
+
+
+def conductor_no_solution_processor(conductor_response, raw_response, request_id,
+ template_placement_response="templates/plc_opt_response.jsont"):
+ """Build a response object to be sent to client's callback URL from Conductor's response
+ This is for case where no solution is found
+
+ :param conductor_response: JSON response from Conductor
+ :param raw_response: Raw HTTP response corresponding to above
+ :param request_id: request Id associated with the client request (same as conductor response's "name")
+ :param template_placement_response: the template for generating response to client (plc_opt_response.jsont)
+ :return: JSON object that can be sent to the client's callback URL
+ """
+ status_message = conductor_response["plans"][0].get("message")
+ templ = Template(open(template_placement_response).read())
+ return json.loads(templ.render(composite_solutions=[], requestId=request_id, license_solutions=[],
+ transactionId=raw_response.headers.get('transaction_id', ""),
+ requestStatus="completed", statusMessage=status_message, json=json))
+
+
diff --git a/apps/placement/optimizers/conductor/remote_opt_processor.py b/apps/placement/optimizers/conductor/remote_opt_processor.py
new file mode 100644
index 0000000..a08f3a4
--- /dev/null
+++ b/apps/placement/optimizers/conductor/remote_opt_processor.py
@@ -0,0 +1,81 @@
+# -------------------------------------------------------------------------
+# Copyright (c) 2015-2017 AT&T Intellectual Property
+#
+# 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.
+#
+# -------------------------------------------------------------------------
+#
+
+from requests import RequestException
+
+import traceback
+from osdf.operation.error_handling import build_json_error_body
+from osdf.logging.osdf_logging import metrics_log, MH, error_log
+from apps.placement.optimizers.conductor import conductor
+from apps.license.optimizers.simple_license_allocation import license_optim
+from osdf.utils.interfaces import get_rest_client
+from osdf.utils.mdc_utils import mdc_from_json
+
+
+def process_placement_opt(request_json, policies, osdf_config):
+ """Perform the work for placement optimization (e.g. call SDC artifact and make conductor request)
+ NOTE: there is scope to make the requests to policy asynchronous to speed up overall performance
+ :param request_json: json content from original request
+ :param policies: flattened policies corresponding to this request
+ :param osdf_config: configuration specific to OSDF app
+ :param prov_status: provStatus retrieved from Subscriber policy
+ :return: None, but make a POST to callback URL
+ """
+
+ try:
+ mdc_from_json(request_json)
+ rc = get_rest_client(request_json, service="so")
+ req_id = request_json["requestInfo"]["requestId"]
+ transaction_id = request_json['requestInfo']['transactionId']
+
+ metrics_log.info(MH.inside_worker_thread(req_id))
+ license_info = None
+ if request_json.get('licenseInfo', {}).get('licenseDemands'):
+ license_info = license_optim(request_json)
+
+ # Conductor only handles placement, only call Conductor if placementDemands exist
+ if request_json.get('placementInfo', {}).get('placementDemands'):
+ metrics_log.info(MH.requesting("placement/conductor", req_id))
+ placement_response = conductor.request(request_json, osdf_config, policies)
+ if license_info: # Attach license solution if it exists
+ placement_response['solutionInfo']['licenseInfo'] = license_info
+ else: # License selection only scenario
+ placement_response = {
+ "transactionId": transaction_id,
+ "requestId": req_id,
+ "requestStatus": "completed",
+ "statusMessage": "License selection completed successfully",
+ "solutionInfo": {"licenseInfo": license_info}
+ }
+ except Exception as err:
+ error_log.error("Error for {} {}".format(req_id, traceback.format_exc()))
+
+ try:
+ body = build_json_error_body(err)
+ metrics_log.info(MH.sending_response(req_id, "ERROR"))
+ rc.request(json=body, noresponse=True)
+ except RequestException:
+ error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
+ return
+
+ try:
+ metrics_log.info(MH.calling_back_with_body(req_id, rc.url,placement_response))
+ rc.request(json=placement_response, noresponse=True)
+ except RequestException : # can't do much here but log it and move on
+ error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
+
diff --git a/apps/placement/optimizers/conductor/translation.py b/apps/placement/optimizers/conductor/translation.py
new file mode 100644
index 0000000..d361755
--- /dev/null
+++ b/apps/placement/optimizers/conductor/translation.py
@@ -0,0 +1,283 @@
+# -------------------------------------------------------------------------
+# Copyright (c) 2015-2017 AT&T Intellectual Property
+#
+# 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.
+#
+# -------------------------------------------------------------------------
+#
+import copy
+import json
+import yaml
+import re
+
+from osdf.utils.data_conversion import text_to_symbol
+from osdf.utils.programming_utils import dot_notation
+
+policy_config_mapping = yaml.safe_load(open('config/has_config.yaml')).get('policy_config_mapping')
+
+
+def get_opt_query_data(req_json, policies):
+ """
+ Fetch service and order specific details from the requestParameters field of a request.
+ :param req_json: a request file
+ :param policies: A set of policies
+ :return: A dictionary with service and order-specific attributes.
+ """
+ req_param_dict = {}
+ if 'requestParameters' in req_json["placementInfo"]:
+ req_params = req_json["placementInfo"]["requestParameters"]
+ for policy in policies:
+ for queryProp in policy['content']['queryProperties']:
+ attr_val = queryProp['value'] if 'value' in queryProp and queryProp['value'] != "" \
+ else dot_notation(req_params, queryProp['attribute_location'])
+ if attr_val is not None:
+ req_param_dict.update({queryProp['attribute']: attr_val})
+ return req_param_dict
+
+
+def gen_optimization_policy(vnf_list, optimization_policy):
+ """Generate optimization policy details to pass to Conductor
+ :param vnf_list: List of vnf's to used in placement request
+ :param optimization_policy: optimization objective policy information provided in the incoming request
+ :return: List of optimization objective policies in a format required by Conductor
+ """
+ optimization_policy_list = []
+ for policy in optimization_policy:
+ content = policy['content']
+ parameter_list = []
+ parameters = ["cloud_version", "hpa_score"]
+
+ for attr in content['objectiveParameter']['parameterAttributes']:
+ parameter = attr['parameter'] if attr['parameter'] in parameters else attr['parameter']+"_between"
+ vnfs = get_matching_vnfs(attr['resources'], vnf_list)
+ for vnf in vnfs:
+ value = [vnf] if attr['parameter'] in parameters else [attr['customerLocationInfo'], vnf]
+ parameter_list.append({
+ attr['operator']: [attr['weight'], {parameter: value}]
+ })
+
+ optimization_policy_list.append({
+ content['objective']: {content['objectiveParameter']['operator']: parameter_list }
+ })
+ return optimization_policy_list
+
+
+def get_matching_vnfs(resources, vnf_list, match_type="intersection"):
+ """Get a list of matching VNFs from the list of resources
+ :param resources:
+ :param vnf_list: List of vnfs to used in placement request
+ :param match_type: "intersection" or "all" or "any" (any => send all_vnfs if there is any intersection)
+ :return: List of matching VNFs
+ """
+ resources_lcase = [x.lower() for x in resources]
+ if match_type == "all": # don't bother with any comparisons
+ return resources if set(resources_lcase) <= set(vnf_list) else None
+ common_vnfs = set(vnf_list) & set(resources_lcase)
+ common_resources = [x for x in resources if x.lower() in common_vnfs]
+ if match_type == "intersection": # specifically requested intersection
+ return list(common_resources)
+ return resources if common_vnfs else None # "any" match => all resources to be returned
+
+
+def gen_policy_instance(vnf_list, resource_policy, match_type="intersection", rtype=None):
+ """Generate a list of policies
+ :param vnf_list: List of vnf's to used in placement request
+ :param resource_policy: policy for this specific resource
+ :param match_type: How to match the vnf_names with the vnf_list (intersection or "any")
+ intersection => return intersection; "any" implies return all vnf_names if intersection is not null
+ :param rtype: resource type (e.g. resourceRegionProperty or resourceInstanceProperty)
+ None => no controller information added to the policy specification to Conductor
+ :return: resource policy list in a format required by Conductor
+ """
+ resource_policy_list = []
+ related_policies = []
+ for policy in resource_policy:
+ pc = policy['content']
+ demands = get_matching_vnfs(pc['resources'], vnf_list, match_type=match_type)
+ resource = {pc['identity']: {'type': pc['policyType'], 'demands': demands}}
+
+ if rtype:
+ resource[pc['identity']]['properties'] = {'controller': pc[rtype]['controller'],
+ 'request': json.loads(pc[rtype]['request'])}
+ if demands and len(demands) != 0:
+ resource_policy_list.append(resource)
+ related_policies.append(policy)
+ return resource_policy_list, related_policies
+
+
+def gen_resource_instance_policy(vnf_list, resource_instance_policy):
+ """Get policies governing resource instances in order to populate the Conductor API call"""
+ cur_policies, _ = gen_policy_instance(vnf_list, resource_instance_policy, rtype='resourceInstanceProperty')
+ return cur_policies
+
+
+def gen_resource_region_policy(vnf_list, resource_region_policy):
+ """Get policies governing resource region in order to populate the Conductor API call"""
+ cur_policies, _ = gen_policy_instance(vnf_list, resource_region_policy, rtype='resourceRegionProperty')
+ return cur_policies
+
+
+def gen_inventory_group_policy(vnf_list, inventory_group_policy):
+ """Get policies governing inventory group in order to populate the Conductor API call"""
+ cur_policies, _ = gen_policy_instance(vnf_list, inventory_group_policy, rtype=None)
+ return cur_policies
+
+
+def gen_reservation_policy(vnf_list, reservation_policy):
+ """Get policies governing resource instances in order to populate the Conductor API call"""
+ cur_policies, _ = gen_policy_instance(vnf_list, reservation_policy, rtype='instanceReservationProperty')
+ return cur_policies
+
+
+def gen_distance_to_location_policy(vnf_list, distance_to_location_policy):
+ """Get policies governing distance-to-location for VNFs in order to populate the Conductor API call"""
+ cur_policies, related_policies = gen_policy_instance(vnf_list, distance_to_location_policy, rtype=None)
+ for p_new, p_main in zip(cur_policies, related_policies): # add additional fields to each policy
+ properties = p_main['content']['distanceProperties']
+ pcp_d = properties['distance']
+ p_new[p_main['content']['identity']]['properties'] = {
+ 'distance': pcp_d['operator'] + " " + pcp_d['value'].lower() + " " + pcp_d['unit'].lower(),
+ 'location': properties['locationInfo']
+ }
+ return cur_policies
+
+
+def gen_attribute_policy(vnf_list, attribute_policy):
+ """Get policies governing attributes of VNFs in order to populate the Conductor API call"""
+ cur_policies, related_policies = gen_policy_instance(vnf_list, attribute_policy, rtype=None)
+ for p_new, p_main in zip(cur_policies, related_policies): # add additional fields to each policy
+ properties = p_main['content']['cloudAttributeProperty']
+ attribute_mapping = policy_config_mapping['attributes'] # wanted attributes and mapping
+ p_new[p_main['content']['identity']]['properties'] = {
+ 'evaluate': dict((k, properties.get(attribute_mapping.get(k))) for k in attribute_mapping.keys())
+ }
+ return cur_policies # cur_policies gets updated in place...
+
+
+def gen_zone_policy(vnf_list, zone_policy):
+ """Get zone policies in order to populate the Conductor API call"""
+ cur_policies, related_policies = gen_policy_instance(vnf_list, zone_policy, match_type="all", rtype=None)
+ for p_new, p_main in zip(cur_policies, related_policies): # add additional fields to each policy
+ pmz = p_main['content']['affinityProperty']
+ p_new[p_main['content']['identity']]['properties'] = {'category': pmz['category'], 'qualifier': pmz['qualifier']}
+ return cur_policies
+
+
+def gen_capacity_policy(vnf_list, capacity_policy):
+ """Get zone policies in order to populate the Conductor API call"""
+ cur_policies, related_policies = gen_policy_instance(vnf_list, capacity_policy, rtype=None)
+ for p_new, p_main in zip(cur_policies, related_policies): # add additional fields to each policy
+ pmz = p_main['content']['capacityProperty']
+ p_new[p_main['content']['identity']]['properties'] = \
+ {"controller": pmz['controller'], 'request': json.loads(pmz['request'])}
+ return cur_policies
+
+
+def gen_hpa_policy(vnf_list, hpa_policy):
+ """Get zone policies in order to populate the Conductor API call"""
+ cur_policies, related_policies = gen_policy_instance(vnf_list, hpa_policy, rtype=None)
+ for p_new, p_main in zip(cur_policies, related_policies): # add additional fields to each policy
+ p_new[p_main['content']['identity']]['properties'] = {'evaluate': p_main['content']['flavorFeatures']}
+ return cur_policies
+
+
+def get_augmented_policy_attributes(policy_property, demand):
+ """Get policy attributes and augment them using policy_config_mapping and demand information"""
+ attributes = copy.copy(policy_property['attributes'])
+ remapping = policy_config_mapping['remapping']
+ extra = dict((x, demand['resourceModelInfo'][remapping[x]]) for x in attributes if x in remapping)
+ attributes.update(extra)
+ return attributes
+
+
+def get_candidates_demands(demand):
+ """Get demands related to candidates; e.g. excluded/required"""
+ res = {}
+ for k, v in policy_config_mapping['candidates'].items():
+ if k not in demand:
+ continue
+ res[v] = [{'inventory_type': x['identifierType'], 'candidate_id': x['identifiers']} for x in demand[k]]
+ return res
+
+
+def get_policy_properties(demand, policies):
+ """Get policy_properties for cases where there is a match with the demand"""
+ for policy in policies:
+ policy_demands = set([x.lower() for x in policy['content'].get('resources', [])])
+ if demand['resourceModuleName'].lower() not in policy_demands:
+ continue # no match for this policy
+ for policy_property in policy['content']['vnfProperties']:
+ yield policy_property
+
+
+def get_demand_properties(demand, policies):
+ """Get list demand properties objects (named tuples) from policy"""
+ demand_properties = []
+ for policy_property in get_policy_properties(demand, policies):
+ prop = dict(inventory_provider=policy_property['inventoryProvider'],
+ inventory_type=policy_property['inventoryType'],
+ service_type=demand['serviceResourceId'],
+ service_resource_id=demand['serviceResourceId'])
+
+ prop.update({'unique': policy_property['unique']} if 'unique' in policy_property and
+ policy_property['unique'] else {})
+ prop['attributes'] = dict()
+ prop['attributes'].update({'global-customer-id': policy_property['customerId']}
+ if policy_property['customerId'] else {})
+ prop['attributes'].update({'model-invariant-id': demand['resourceModelInfo']['modelInvariantId']}
+ if demand['resourceModelInfo']['modelInvariantId'] else {})
+ prop['attributes'].update({'model-version-id': demand['resourceModelInfo']['modelVersionId']}
+ if demand['resourceModelInfo']['modelVersionId'] else {})
+ prop['attributes'].update({'equipment-role': policy_property['equipmentRole']}
+ if policy_property['equipmentRole'] else {})
+
+ if policy_property.get('attributes'):
+ for attr_key, attr_val in policy_property['attributes'].items():
+ update_converted_attribute(attr_key, attr_val, prop)
+
+ prop.update(get_candidates_demands(demand))
+ demand_properties.append(prop)
+ return demand_properties
+
+
+def update_converted_attribute(attr_key, attr_val, properties):
+ """
+ Updates dictonary of attributes with one specified in the arguments.
+ Automatically translates key namr from camelCase to hyphens
+ :param attr_key: key of the attribute
+ :param attr_val: value of the attribute
+ :param properties: dictionary with attributes to update
+ :return:
+ """
+ if attr_val:
+ remapping = policy_config_mapping['attributes']
+ if remapping.get(attr_key):
+ key_value = remapping.get(attr_key)
+ else:
+ key_value = re.sub('(.)([A-Z][a-z]+)', r'\1-\2', attr_key)
+ key_value = re.sub('([a-z0-9])([A-Z])', r'\1-\2', key_value).lower()
+ properties['attributes'].update({key_value: attr_val})
+
+
+def gen_demands(req_json, vnf_policies):
+ """Generate list of demands based on request and VNF policies
+ :param req_json: Request object from the client (e.g. MSO)
+ :param vnf_policies: Policies associated with demand resources (e.g. from grouped_policies['vnfPolicy'])
+ :return: list of demand parameters to populate the Conductor API call
+ """
+ demand_dictionary = {}
+ for demand in req_json['placementInfo']['placementDemands']:
+ prop = get_demand_properties(demand, vnf_policies)
+ if len(prop) > 0:
+ demand_dictionary.update({demand['resourceModuleName']: prop})
+ return demand_dictionary