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common_db_client.py

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Source

osm_policy_module/common/common_db_client.py

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# -*- coding: utf-8 -*-




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# Copyright 2018 Whitestack, LLC




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# *************************************************************




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# This file is part of OSM Monitoring module




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# All Rights Reserved to Whitestack, LLC




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# Licensed under the Apache License, Version 2.0 (the "License"); you may




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# not use this file except in compliance with the License. You may obtain




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# a copy of the License at




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#         http://www.apache.org/licenses/LICENSE-2.0




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# Unless required by applicable law or agreed to in writing, software




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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT




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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the




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# License for the specific language governing permissions and limitations




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# under the License.




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# For those usages not covered by the Apache License, Version 2.0 please




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# contact: bdiaz@whitestack.com or glavado@whitestack.com




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##




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from osm_common import dbmongo, dbmemory




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from osm_policy_module.core.config import Config




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from osm_policy_module.core.exceptions import VdurNotFound




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class CommonDbClient:




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    def __init__(self, config: Config):




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        if config.get('database', 'driver') == "mongo":




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            self.common_db = dbmongo.DbMongo()




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        elif config.get('database', 'driver') == "memory":




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            self.common_db = dbmemory.DbMemory()




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        else:




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            raise Exception("Unknown database driver {}".format(config.get('section', 'driver')))




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        self.common_db.db_connect(config.get("database"))




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    def get_vnfr(self, nsr_id: str, member_index: str):




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        vnfr = self.common_db.get_one("vnfrs",




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                                      {"nsr-id-ref": nsr_id, "member-vnf-index-ref": member_index})




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        return vnfr




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    def get_vnfrs(self, nsr_id: str):




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        # TODO: Change for multiple DF support




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        nsr_nsd_df = self.get_nsr(nsr_id)['nsd'].get('df', [{}])[0]




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        all_nsd_member_vnf_index = [vnf.get('id') for vnf in nsr_nsd_df.get('vnf-profile', [])]




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        return [self.get_vnfr(nsr_id, member_index) for member_index in all_nsd_member_vnf_index]




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    def get_vnfd(self, vnfd_id: str):




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        vnfr = self.common_db.get_one("vnfds",




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                                      {"_id": vnfd_id})




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        return vnfr




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    def get_nsr(self, nsr_id: str):




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        nsr = self.common_db.get_one("nsrs",




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                                     {"id": nsr_id})




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        return nsr




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    def get_nslcmop(self, nslcmop_id):




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        nslcmop = self.common_db.get_one("nslcmops",




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                                         {"_id": nslcmop_id})




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        return nslcmop




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    def get_vdur(self, nsr_id, member_index, vdur_name):




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        vnfr = self.get_vnfr(nsr_id, member_index)




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        for vdur in vnfr['vdur']:




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            if vdur['name'] == vdur_name:




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                return vdur




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        raise VdurNotFound('vdur not found for nsr-id %s, member_index %s and vdur_name %s', nsr_id, member_index,




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                           vdur_name)




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    def create_nslcmop(self, nslcmop):




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        self.common_db.create("nslcmops", nslcmop)