diff options
Diffstat (limited to 'osdf/adapters/conductor')
| -rw-r--r-- | osdf/adapters/conductor/__init__.py | 17 | ||||
| -rw-r--r-- | osdf/adapters/conductor/api_builder.py | 123 | ||||
| -rw-r--r-- | osdf/adapters/conductor/conductor.py | 120 | ||||
| -rwxr-xr-x | osdf/adapters/conductor/templates/conductor_interface.json | 41 | ||||
| -rw-r--r-- | osdf/adapters/conductor/translation.py | 376 |
5 files changed, 677 insertions, 0 deletions
diff --git a/osdf/adapters/conductor/__init__.py b/osdf/adapters/conductor/__init__.py new file mode 100644 index 0000000..6156206 --- /dev/null +++ b/osdf/adapters/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. +# +# ------------------------------------------------------------------------- +#
\ No newline at end of file diff --git a/osdf/adapters/conductor/api_builder.py b/osdf/adapters/conductor/api_builder.py new file mode 100644 index 0000000..f3b0798 --- /dev/null +++ b/osdf/adapters/conductor/api_builder.py @@ -0,0 +1,123 @@ +# ------------------------------------------------------------------------- +# Copyright (c) 2015-2017 AT&T Intellectual Property +# Copyright (C) 2020 Wipro Limited. +# +# 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 jinja2 import Template +import json + +import osdf.adapters.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, service_info, request_parameters): + """Function prepares parameters section for has request + + :param group_policies: filtered policies + :param service_info: service info + :param request_parameters: request parameters + :return: + """ + initial_params = tr.get_opt_query_data(request_parameters, + group_policies['onap.policies.optimization.service.QueryPolicy']) + 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": service_info.get('serviceName', "")}) + params.update({"service_id": service_info.get('serviceInstanceId', "")}) + + for key, val in initial_params.items(): + if val and val != "": + params.update({key: val}) + return params + + +def conductor_api_builder(req_info, demands, request_parameters, service_info, + template_fields, flat_policies: list, local_config, + template="osdf/adapters/conductor/templates/conductor_interface.json"): + """Build an OSDF southbound API call for HAS-Conductor/Placement optimization + + :param req_info: parameter data received from a client + :param demands: list of demands + :param request_parameters: request parameters + :param service_info: service info object + :param template_fields: Fields that has to be passed to the template to render + :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 + :return: json to be sent to Conductor/placement optimization + """ + + templ = Template(open(template).read()) + gp = group_policies_gen(flat_policies, local_config) + demand_name_list = [] + for demand in demands: + demand_name_list.append(demand['resourceModuleName'].lower()) + demand_list = tr.gen_demands(demands, gp['onap.policies.optimization.resource.VnfPolicy']) + attribute_policy_list = tr.gen_attribute_policy( + demand_name_list, gp['onap.policies.optimization.resource.AttributePolicy']) + + distance_to_location_policy_list = tr.gen_distance_to_location_policy( + demand_name_list, gp['onap.policies.optimization.resource.DistancePolicy']) + inventory_policy_list = tr.gen_inventory_group_policy( + demand_name_list, gp['onap.policies.optimization.resource.InventoryGroupPolicy']) + resource_instance_policy_list = tr.gen_resource_instance_policy( + demand_name_list, gp['onap.policies.optimization.resource.ResourceInstancePolicy']) + resource_region_policy_list = tr.gen_resource_region_policy( + demand_name_list, gp['onap.policies.optimization.resource.ResourceRegionPolicy']) + zone_policy_list = tr.gen_zone_policy( + demand_name_list, gp['onap.policies.optimization.resource.AffinityPolicy']) + optimization_policy_list = tr.gen_optimization_policy( + demand_name_list, gp['onap.policies.optimization.resource.OptimizationPolicy']) + reservation_policy_list = tr.gen_reservation_policy( + demand_name_list, gp['onap.policies.optimization.resource.InstanceReservationPolicy']) + capacity_policy_list = tr.gen_capacity_policy( + demand_name_list, gp['onap.policies.optimization.resource.Vim_fit']) + hpa_policy_list = tr.gen_hpa_policy( + demand_name_list, gp['onap.policies.optimization.resource.HpaPolicy']) + threshold_policy_list = tr.gen_threshold_policy(demand_name_list, + gp['onap.policies.optimization.resource.' + 'ThresholdPolicy']) + aggregation_policy_list = tr.gen_aggregation_policy(demand_name_list, + gp['onap.policies.optimization.resource.' + 'AggregationPolicy']) + req_params_dict = _build_parameters(gp, service_info, request_parameters) + 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, threshold_policy_list, aggregation_policy_list] + filtered_policies = [x for x in conductor_policies if len(x) > 0] + policy_groups = list_flatten(filtered_policies) + 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, + location_enabled=template_fields.get('location_enabled'), + version=template_fields.get('version'), + json=json) + json_payload = json.dumps(json.loads(rendered_req)) # need this because template's JSON is ugly! + return json_payload diff --git a/osdf/adapters/conductor/conductor.py b/osdf/adapters/conductor/conductor.py new file mode 100644 index 0000000..49c123d --- /dev/null +++ b/osdf/adapters/conductor/conductor.py @@ -0,0 +1,120 @@ +# ------------------------------------------------------------------------- +# Copyright (c) 2015-2017 AT&T Intellectual Property +# Copyright (C) 2020 Wipro Limited. +# +# 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 requests import RequestException +import time + +from osdf.adapters.conductor.api_builder import conductor_api_builder +from osdf.logging.osdf_logging import debug_log +from osdf.operation.exceptions import BusinessException +from osdf.utils.interfaces import RestClient + + +def request(req_info, demands, request_parameters, service_info, template_fields, + osdf_config, flat_policies): + config = osdf_config.deployment + local_config = osdf_config.core + uid, passwd = config['conductorUsername'], config['conductorPassword'] + conductor_url = config['conductorUrl'] + req_id = req_info["requestId"] + transaction_id = req_info['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_info, demands, request_parameters, + service_info, template_fields, 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_info['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", "solved"]: + return resp + new_url = resp['plans'][0]['links'][0][0]['href'] # TODO(krishna): 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) + 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 diff --git a/osdf/adapters/conductor/templates/conductor_interface.json b/osdf/adapters/conductor/templates/conductor_interface.json new file mode 100755 index 0000000..c0e28dc --- /dev/null +++ b/osdf/adapters/conductor/templates/conductor_interface.json @@ -0,0 +1,41 @@ +{ + "name": "{{ name }}", + "files": {}, + "timeout": {{ timeout }}, + "num_solution": "{{ limit }}", + "template": { + "homing_template_version": "{{ version }}", + "parameters": { + {% set comma=joiner(",") %} + {% for key, value in request_params.items() %} {{ comma() }} + "{{key}}": {{ json.dumps(value) }} + {% endfor %} + }, + {% if location_enabled %} + "locations": { + "customer_loc": { + "latitude": { "get_param": "customer_lat" }, + "longitude": { "get_param": "customer_long" } + } + }, + {% endif %} + "demands": {{ json.dumps(demand_list) }}, + {% set comma_main = joiner(",") %} + "constraints": { + {% set comma=joiner(",") %} + {% for elem in policy_groups %} {{ comma() }} + {% for key, value in elem.items() %} + "{{key}}": {{ json.dumps(value) }} + {% endfor %} + {% endfor %} + }, + "optimization": { + {% set comma=joiner(",") %} + {% for elem in optimization_policies %} {{ comma() }} + {% for key, value in elem.items() %} + "{{key}}": {{ json.dumps(value) }} {{ ", " if not loop.last }} + {% endfor %} + {% endfor %} + } + } +} diff --git a/osdf/adapters/conductor/translation.py b/osdf/adapters/conductor/translation.py new file mode 100644 index 0000000..f44f27f --- /dev/null +++ b/osdf/adapters/conductor/translation.py @@ -0,0 +1,376 @@ +# ------------------------------------------------------------------------- +# Copyright (c) 2015-2017 AT&T Intellectual Property +# Copyright (C) 2020 Wipro Limited. +# +# 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 re +import yaml + +from osdf.utils.programming_utils import dot_notation + +policy_config_mapping = yaml.safe_load(open('config/has_config.yaml')).get('policy_config_mapping') + +CONSTRAINT_TYPE_MAP = {"onap.policies.optimization.resource.AttributePolicy": "attribute", + "onap.policies.optimization.resource.DistancePolicy": "distance_to_location", + "onap.policies.optimization.resource.InventoryGroupPolicy": "inventory_group", + "onap.policies.optimization.resource.ResourceInstancePolicy": "instance_fit", + "onap.policies.optimization.resource.ResourceRegionPolicy": "region_fit", + "onap.policies.optimization.resource.AffinityPolicy": "zone", + "onap.policies.optimization.resource.InstanceReservationPolicy": + "instance_reservation", + "onap.policies.optimization.resource.Vim_fit": "vim_fit", + "onap.policies.optimization.resource.HpaPolicy": "hpa", + "onap.policies.optimization.resource.ThresholdPolicy": "threshold", + "onap.policies.optimization.resource.AggregationPolicy": "aggregation" + } + + +def get_opt_query_data(request_parameters, policies): + """Fetch service and order specific details from the requestParameters field of a request. + + :param request_parameters: A list of request parameters + :param policies: A set of policies + :return: A dictionary with service and order-specific attributes. + """ + req_param_dict = {} + if request_parameters: + for policy in policies: + for queryProp in policy[list(policy.keys())[0]]['properties']['queryProperties']: + attr_val = queryProp['value'] if 'value' in queryProp and queryProp['value'] != "" \ + else dot_notation(request_parameters, 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 + """ + if len(optimization_policy) == 1: + policy = optimization_policy[0] + policy_content = policy[list(policy.keys())[0]] + if policy_content['type_version'] == '2.0.0': + properties = policy_content['properties'] + objective = {'goal': properties['goal'], + 'operation_function': properties['operation_function']} + return [objective] + + optimization_policy_list = [] + for policy in optimization_policy: + content = policy[list(policy.keys())[0]]['properties'] + 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" + default, 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 + """ + # Check if it is a default policy + default = True if resources == [] else False + resources_lcase = [x.lower() for x in resources] if not default else [x.lower() for x in vnf_list] + if match_type == "all": # don't bother with any comparisons + return default, resources if set(resources_lcase) <= set(vnf_list) else None + common_vnfs = set(vnf_list) & set(resources_lcase) if not default else set(vnf_list) + common_resources = [x for x in resources if x.lower() in common_vnfs] if not default else list(common_vnfs) + if match_type == "intersection": # specifically requested intersection + return default, list(common_resources) + return default, 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[list(policy.keys())[0]] + default, demands = get_matching_vnfs(pc['properties']['resources'], vnf_list, match_type=match_type) + resource = {pc['properties']['identity']: {'type': CONSTRAINT_TYPE_MAP.get(pc['type']), 'demands': demands}} + + if rtype: + resource[pc['properties']['identity']]['properties'] = {'controller': pc[rtype]['controller'], + 'request': json.loads(pc[rtype]['request'])} + if demands and len(demands) != 0: + # The default policy shall not override the specific policy that already appended + if default: + for d in demands: + resource_repeated = True \ + if {pc['properties']['identity']: {'type': CONSTRAINT_TYPE_MAP.get(pc['type']), + 'demands': d}} in resource_policy_list else False + if resource_repeated: + continue + else: + resource_policy_list.append( + {pc['properties']['identity']: {'type': CONSTRAINT_TYPE_MAP.get(pc['type']), + 'demands': d}}) + policy[list(policy.keys())[0]]['properties']['resources'] = d + related_policies.append(policy) + # Need to override the default policies, here delete the outdated policy stored in the db + if resource in resource_policy_list: + for pc in related_policies: + if pc[list(pc.keys()[0])]['properties']['resources'] == resource: + related_policies.remove(pc) + resource_policy_list.remove(resource) + related_policies.append(policy) + resource_policy_list.append(resource) + + 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[list(p_main.keys())[0]]['properties']['distanceProperties'] + pcp_d = properties['distance'] + p_new[p_main[list(p_main.keys())[0]]['properties']['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[list(p_main.keys())[0]]['properties']['attributeProperties'] + attribute_mapping = policy_config_mapping['filtering_attributes'] # wanted attributes and mapping + p_new[p_main[list(p_main.keys())[0]]['properties']['identity']]['properties'] = { + 'evaluate': dict((attribute_mapping[k], properties.get(k) + if k != "cloudRegion" else gen_cloud_region(properties)) + 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[list(p_main.keys())[0]]['properties']['affinityProperties'] + p_new[p_main[list(p_main.keys())[0]]['properties']['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[list(p_main.keys())[0]]['properties']['capacityProperty'] + p_new[p_main[list(p_main.keys())[0]]['properties']['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[list(p_main.keys())[0]]['properties']['identity']]['properties'] = \ + {'evaluate': p_main[list(p_main.keys())[0]]['properties']['flavorFeatures']} + return cur_policies + + +def gen_threshold_policy(vnf_list, threshold_policy): + cur_policies, related_policies = gen_policy_instance(vnf_list, threshold_policy, rtype=None) + for p_new, p_main in zip(cur_policies, related_policies): + pmz = p_main[list(p_main.keys())[0]]['properties']['thresholdProperties'] + p_new[p_main[list(p_main.keys())[0]]['properties']['identity']]['properties'] = {'evaluate': pmz} + return cur_policies + + +def gen_aggregation_policy(vnf_list, cross_policy): + cur_policies, related_policies = gen_policy_instance(vnf_list, cross_policy, rtype=None) + for p_new, p_main in zip(cur_policies, related_policies): + pmz = p_main[list(p_main.keys())[0]]['properties']['aggregationProperties'] + p_new[p_main[list(p_main.keys())[0]]['properties']['identity']]['properties'] = {'evaluate': pmz} + 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[list(policy.keys())[0]]['properties']['resources']]) + if policy_demands and demand['resourceModuleName'].lower() not in policy_demands: + continue # no match for this policy + elif policy_demands == set(): # Append resource name for default policy + policy[list(policy.keys())[0]]['properties'].update(resources=list(demand.get('resourceModuleName'))) + for policy_property in policy[list(policy.keys())[0]]['properties']['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.get('serviceResourceId', ''), + service_resource_id=demand.get('serviceResourceId', '')) + policy_property_mapping = {'filtering_attributes': 'attributes', + 'passthrough_attributes': 'passthroughAttributes', + 'default_attributes': 'defaultAttributes'} + + prop.update({'unique': policy_property['unique']} if 'unique' in policy_property and + policy_property['unique'] else {}) + prop['filtering_attributes'] = dict() + for key, value in policy_property_mapping.items(): + get_demand_attributes(prop, policy_property, key, value) + + prop['filtering_attributes'].update({'global-customer-id': policy_property['customerId']} + if 'customerId' in policy_property and policy_property['customerId'] + else {}) + prop['filtering_attributes'].update({'model-invariant-id': demand['resourceModelInfo']['modelInvariantId']} + if 'modelInvariantId' in demand['resourceModelInfo'] + and demand['resourceModelInfo']['modelInvariantId'] else {}) + prop['filtering_attributes'].update({'model-version-id': demand['resourceModelInfo']['modelVersionId']} + if 'modelVersionId' in demand['resourceModelInfo'] + and demand['resourceModelInfo']['modelVersionId'] else {}) + prop['filtering_attributes'].update({'equipment-role': policy_property['equipmentRole']} + if 'equipmentRole' in policy_property and policy_property['equipmentRole'] + else {}) + prop.update(get_candidates_demands(demand)) + demand_properties.append(prop) + return demand_properties + + +def get_demand_attributes(prop, policy_property, attribute_type, key): + if policy_property.get(key): + prop[attribute_type] = dict() + for attr_key, attr_val in policy_property[key].items(): + update_converted_attribute(attr_key, attr_val, prop, attribute_type) + + +def update_converted_attribute(attr_key, attr_val, properties, attribute_type): + """Updates dictonary of attributes with one specified in the arguments. + + Automatically translates key namr from camelCase to hyphens + :param attribute_type: attribute section name + :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[attribute_type] + 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[attribute_type].update({key_value: attr_val}) + + +def gen_demands(demands, vnf_policies): + """Generate list of demands based on request and VNF policies + + :param demands: A List of demands + :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 demands: + prop = get_demand_properties(demand, vnf_policies) + if len(prop) > 0: + demand_dictionary.update({demand['resourceModuleName']: prop}) + return demand_dictionary + + +def gen_cloud_region(property): + prop = {"cloud_region_attributes": dict()} + if 'cloudRegion' in property: + for k, v in property['cloudRegion'].items(): + update_converted_attribute(k, v, prop, 'cloud_region_attributes') + return prop["cloud_region_attributes"] |