osdf/optimizers/placementopt/conductor/api_builder.py

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  18
  19 import copy
  20 import json
  21 from jinja2 import Template
  22 from osdf.utils.programming_utils import list_flatten, dot_notation
  23 import osdf.optimizers.placementopt.conductor.translation as tr
  24 from osdf.adapters.policy.utils import group_policies
  25
  26
  27 def conductor_api_builder(request_json, flat_policies: list, local_config, prov_status,
  28                           template="templates/conductor_interface.json"):
  29     """Build a SNIRO southbound API call for Conductor/Placement optimization
  30     :param request_json: parameter data received from a client
  31     :param flat_policies: policy data received from the policy platform (flat policies)
  32     :param template: template to generate southbound API call to conductor
  33     :param local_config: local configuration file with pointers for the service specific information
  34     :param prov_status: provStatus retrieved from Subscriber policy
  35     :return: json to be sent to Conductor/placement optimization
  36     """
  37     templ = Template(open(template).read())
  38     gp = group_policies(flat_policies)
  39     demand_vnf_name_list = []
  40
  41     for placementDemand in request_json['placementInfo']['placementDemands']:
  42         demand_vnf_name_list.append(placementDemand['resourceModuleName'])
  43
  44     demand_list = tr.gen_demands(request_json, gp['vnfPolicy'])
  45     attribute_policy_list = tr.gen_attribute_policy(demand_vnf_name_list, gp['attribute'])
  46     distance_to_location_policy_list = tr.gen_distance_to_location_policy(
  47         demand_vnf_name_list, gp['distance_to_location'])
  48     inventory_policy_list = tr.gen_inventory_group_policy(demand_vnf_name_list, gp['inventory_group'])
  49     resource_instance_policy_list = tr.gen_resource_instance_policy(
  50         demand_vnf_name_list, gp['instance_fit'])
  51     resource_region_policy_list = tr.gen_resource_region_policy(demand_vnf_name_list, gp['region_fit'])
  52     zone_policy_list = tr.gen_zone_policy(demand_vnf_name_list, gp['zone'])
  53     optimization_policy_list = tr.gen_optimization_policy(demand_vnf_name_list, gp['placementOptimization'])
  54     reservation_policy_list = tr.gen_reservation_policy(demand_vnf_name_list, gp['instance_reservation'])
  55     conductor_policies = [attribute_policy_list, distance_to_location_policy_list, inventory_policy_list,
  56                           resource_instance_policy_list, resource_region_policy_list, zone_policy_list]
  57     filtered_policies = [x for x in conductor_policies if len(x) > 0]
  58     policy_groups = list_flatten(filtered_policies)
  59     reservation_policies = [x for x in reservation_policy_list if len(x) > 0]
  60     reservation_groups = list_flatten(reservation_policies)
  61     req_info = request_json['requestInfo']
  62     model_name = request_json['serviceInfo']['serviceName']
  63     service_type = model_name
  64     # service_type = data_mapping.get_service_type(model_name)
  65     service_info = local_config.get('service_info', {}).get(service_type, {})
  66     order_info = {}
  67     if 'orderInfo' in request_json["placementInfo"]:
  68         order_info = json.loads(request_json["placementInfo"]["orderInfo"])
  69     request_type = req_info.get('requestType', None)
  70     subs_com_site_id = ""
  71     if 'subscriberInfo' in request_json['placementInfo']:
  72         subs_com_site_id = request_json['placementInfo']['subscriberInfo'].get('subscriberCommonSiteId', "")
  73     rendered_req = None
  74     if service_type == 'vCPE':
  75         # data_mapping.normalize_user_params(order_info)
  76         rendered_req = templ.render(
  77             requestType=request_type,
  78             chosenComplex=subs_com_site_id,
  79             demand_list=demand_list,
  80             policy_groups=policy_groups,
  81             optimization_policies=optimization_policy_list,
  82             name=req_info['requestId'],
  83             timeout=req_info['timeout'],
  84             limit=req_info['numSolutions'],
  85             serviceType=service_type,
  86             serviceInstance=request_json['serviceInfo']['serviceInstanceId'],
  87             provStatus = prov_status,
  88             chosenRegion=order_info.get('requestParameters',{}).get('lcpCloudRegionId'),
  89             json=json)
  90     json_payload = json.dumps(json.loads(rendered_req)) # need this because template's JSON is ugly!
  91     return json_payload
  92
  93
  94 def retrieve_node(req_json, reference):
  95     """
  96     Get the child node(s) from the dot-notation [reference] and parent [req_json].
  97     For placement and other requests, there are encoded JSONs inside the request or policy,
  98     so we need to expand it and then do a search over the parent plus expanded JSON.
  99     """
 100     req_json_copy = copy.deepcopy(req_json)  # since we expand the JSON in place, we work on a copy
 101     if 'orderInfo' in req_json_copy['placementInfo']:
 102         req_json_copy['placementInfo']['orderInfo'] = json.loads(req_json_copy['placementInfo']['orderInfo'])
 103     info = dot_notation(req_json_copy, reference)
 104     return list_flatten(info) if isinstance(info, list) else info
 105