osdf/optimizers/placementopt/conductor/api_builder.py

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  18
  19 import json
  20
  21 from jinja2 import Template
  22
  23 import osdf.optimizers.placementopt.conductor.translation as tr
  24 from osdf.adapters.policy.utils import group_policies
  25 from osdf.utils.programming_utils import list_flatten
  26
  27
  28 def conductor_api_builder(request_json, flat_policies: list, local_config, prov_status,
  29                           template="templates/conductor_interface.json"):
  30     """Build an OSDF southbound API call for HAS-Conductor/Placement optimization
  31     :param request_json: parameter data received from a client
  32     :param flat_policies: policy data received from the policy platform (flat policies)
  33     :param template: template to generate southbound API call to conductor
  34     :param local_config: local configuration file with pointers for the service specific information
  35     :param prov_status: provStatus retrieved from Subscriber policy
  36     :return: json to be sent to Conductor/placement optimization
  37     """
  38     templ = Template(open(template).read())
  39     gp = group_policies(flat_policies)
  40     demand_vnf_name_list = []
  41
  42     for placementDemand in request_json['placementInfo']['placementDemands']:
  43         demand_vnf_name_list.append(placementDemand['resourceModuleName'])
  44
  45     demand_list = tr.gen_demands(request_json, gp['vnfPolicy'])
  46     attribute_policy_list = tr.gen_attribute_policy(demand_vnf_name_list, gp['attribute'])
  47     distance_to_location_policy_list = tr.gen_distance_to_location_policy(
  48         demand_vnf_name_list, gp['distance_to_location'])
  49     inventory_policy_list = tr.gen_inventory_group_policy(demand_vnf_name_list, gp['inventory_group'])
  50     resource_instance_policy_list = tr.gen_resource_instance_policy(
  51         demand_vnf_name_list, gp['instance_fit'])
  52     resource_region_policy_list = tr.gen_resource_region_policy(demand_vnf_name_list, gp['region_fit'])
  53     zone_policy_list = tr.gen_zone_policy(demand_vnf_name_list, gp['zone'])
  54     optimization_policy_list = tr.gen_optimization_policy(demand_vnf_name_list, gp['placementOptimization'])
  55     reservation_policy_list = tr.gen_reservation_policy(demand_vnf_name_list, gp['instance_reservation'])
  56     conductor_policies = [attribute_policy_list, distance_to_location_policy_list, inventory_policy_list,
  57                           resource_instance_policy_list, resource_region_policy_list, zone_policy_list]
  58     filtered_policies = [x for x in conductor_policies if len(x) > 0]
  59     policy_groups = list_flatten(filtered_policies)
  60     reservation_policies = [x for x in reservation_policy_list if len(x) > 0]
  61     reservation_groups = list_flatten(reservation_policies)
  62     req_info = request_json['requestInfo']
  63     model_name = request_json['serviceInfo']['serviceName']
  64     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         rendered_req = templ.render(
  76             requestType=request_type,
  77             chosenComplex=subs_com_site_id,
  78             demand_list=demand_list,
  79             policy_groups=policy_groups,
  80             optimization_policies=optimization_policy_list,
  81             name=req_info['requestId'],
  82             timeout=req_info['timeout'],
  83             limit=req_info['numSolutions'],
  84             serviceType=service_type,
  85             serviceInstance=request_json['serviceInfo']['serviceInstanceId'],
  86             provStatus=prov_status,
  87             chosenRegion=order_info.get('requestParameters', {}).get('lcpCloudRegionId'),
  88             json=json)
  89     json_payload = json.dumps(json.loads(rendered_req))  # need this because template's JSON is ugly!
  90     return json_payload