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_gen
  25 from osdf.utils.programming_utils import list_flatten
  26
  27
  28 def conductor_api_builder(request_json, flat_policies: list, local_config,
  29                           template="osdf/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_gen(flat_policies, local_config)
  40     demand_vnf_name_list = []
  41
  42     for placementDemand in request_json['placementInfo']['placementDemands']:
  43         demand_vnf_name_list.append(placementDemand['resourceModuleName'].lower())
  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['placement_optimization'])
  54     reservation_policy_list = tr.gen_reservation_policy(demand_vnf_name_list, gp['instance_reservation'])
  55     capacity_policy_list = tr.gen_capacity_policy(demand_vnf_name_list, gp['vim_fit'])
  56     hpa_policy_list = tr.gen_hpa_policy(demand_vnf_name_list, gp['hpa'])
  57     req_params_dict = tr.get_opt_query_data(request_json, gp['request_param_query'])
  58     conductor_policies = [attribute_policy_list, distance_to_location_policy_list, inventory_policy_list,
  59                           resource_instance_policy_list, resource_region_policy_list, zone_policy_list,
  60                           reservation_policy_list, capacity_policy_list, hpa_policy_list]
  61     filtered_policies = [x for x in conductor_policies if len(x) > 0]
  62     policy_groups = list_flatten(filtered_policies)
  63     req_info = request_json['requestInfo']
  64     request_type = req_info.get('requestType', None)
  65     rendered_req = templ.render(
  66         requestType=request_type,
  67         demand_list=demand_list,
  68         policy_groups=policy_groups,
  69         optimization_policies=optimization_policy_list,
  70         name=req_info['requestId'],
  71         timeout=req_info['timeout'],
  72         limit=req_info['numSolutions'],
  73         service_type=request_json['serviceInfo']['serviceName'],
  74         service_id=request_json['serviceInfo']['serviceInstanceId'],
  75         latitude=req_params_dict.get("customerLatitude", 0.0),
  76         longitude=req_params_dict.get("customerLongitude", 0.0),
  77         required_disk=req_params_dict.get("requiredDisk", ""),
  78         required_mem=req_params_dict.get("requiredMemory", ""),
  79         json=json)
  80     json_payload = json.dumps(json.loads(rendered_req))  # need this because template's JSON is ugly!
  81     return json_payload