From 430153e1a9489a86cf0ff7942eceb0bf5f1c170c Mon Sep 17 00:00:00 2001 From: vrvarma Date: Fri, 13 Dec 2019 10:24:55 -0500 Subject: osdf rearchitecture into apps and libs Change-Id: I2db2f8e252bd5e60807b2ffabf5a5b193a789f7a Signed-off-by: vrvarma Issue-ID: OPTFRA-637 --- apps/placement/optimizers/__init__.py | 0 apps/placement/optimizers/conductor/__init__.py | 17 ++ apps/placement/optimizers/conductor/api_builder.py | 99 +++++++ apps/placement/optimizers/conductor/conductor.py | 202 +++++++++++++++ .../optimizers/conductor/remote_opt_processor.py | 81 ++++++ apps/placement/optimizers/conductor/translation.py | 283 +++++++++++++++++++++ 6 files changed, 682 insertions(+) create mode 100644 apps/placement/optimizers/__init__.py create mode 100644 apps/placement/optimizers/conductor/__init__.py create mode 100644 apps/placement/optimizers/conductor/api_builder.py create mode 100755 apps/placement/optimizers/conductor/conductor.py create mode 100644 apps/placement/optimizers/conductor/remote_opt_processor.py create mode 100644 apps/placement/optimizers/conductor/translation.py (limited to 'apps/placement/optimizers') diff --git a/apps/placement/optimizers/__init__.py b/apps/placement/optimizers/__init__.py new file mode 100644 index 0000000..e69de29 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 -- cgit 1.2.3-korg