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# -*- coding: utf-8 -*- |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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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, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
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# implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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|
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import logging |
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# import yaml |
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from osm_common import ( |
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dbmongo, |
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dbmemory, |
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fslocal, |
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fsmongo, |
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msglocal, |
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msgkafka, |
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version as common_version, |
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) |
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from osm_common.dbbase import DbException |
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from osm_common.fsbase import FsException |
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from osm_common.msgbase import MsgException |
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from http import HTTPStatus |
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|
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from osm_nbi.authconn_keystone import AuthconnKeystone |
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from osm_nbi.authconn_internal import AuthconnInternal |
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from osm_nbi.authconn_tacacs import AuthconnTacacs |
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from osm_nbi.base_topic import EngineException, versiontuple |
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from osm_nbi.admin_topics import VimAccountTopic, WimAccountTopic, SdnTopic |
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from osm_nbi.admin_topics import K8sClusterTopic, K8sRepoTopic, OsmRepoTopic |
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from osm_nbi.admin_topics import VcaTopic |
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from osm_nbi.admin_topics import UserTopicAuth, ProjectTopicAuth, RoleTopicAuth |
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from osm_nbi.descriptor_topics import ( |
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VnfdTopic, |
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NsdTopic, |
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PduTopic, |
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NstTopic, |
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VnfPkgOpTopic, |
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) |
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from osm_nbi.instance_topics import ( |
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NsrTopic, |
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VnfrTopic, |
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NsLcmOpTopic, |
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NsiTopic, |
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NsiLcmOpTopic, |
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) |
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from osm_nbi.vnf_instance_topics import VnfInstances, VnfLcmOpTopic |
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from osm_nbi.pmjobs_topics import PmJobsTopic |
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from osm_nbi.subscription_topics import NslcmSubscriptionsTopic |
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from osm_nbi.osm_vnfm.vnf_subscription import VnflcmSubscriptionsTopic |
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from base64 import b64encode |
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from os import urandom # , path |
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from threading import Lock |
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|
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__author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>" |
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min_common_version = "0.1.16" |
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class Engine(object): |
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map_from_topic_to_class = { |
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"vnfds": VnfdTopic, |
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"nsds": NsdTopic, |
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"nsts": NstTopic, |
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"pdus": PduTopic, |
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"nsrs": NsrTopic, |
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"vnfrs": VnfrTopic, |
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"nslcmops": NsLcmOpTopic, |
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"vim_accounts": VimAccountTopic, |
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"wim_accounts": WimAccountTopic, |
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"sdns": SdnTopic, |
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"k8sclusters": K8sClusterTopic, |
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"vca": VcaTopic, |
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"k8srepos": K8sRepoTopic, |
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"osmrepos": OsmRepoTopic, |
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"users": UserTopicAuth, # Valid for both internal and keystone authentication backends |
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"projects": ProjectTopicAuth, # Valid for both internal and keystone authentication backends |
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"roles": RoleTopicAuth, # Valid for both internal and keystone authentication backends |
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"nsis": NsiTopic, |
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"nsilcmops": NsiLcmOpTopic, |
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"vnfpkgops": VnfPkgOpTopic, |
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"nslcm_subscriptions": NslcmSubscriptionsTopic, |
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"vnf_instances": VnfInstances, |
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"vnflcmops": VnfLcmOpTopic, |
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"vnflcm_subscriptions": VnflcmSubscriptionsTopic, |
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# [NEW_TOPIC]: add an entry here |
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# "pm_jobs": PmJobsTopic will be added manually because it needs other parameters |
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} |
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map_target_version_to_int = { |
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"1.0": 1000, |
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"1.1": 1001, |
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"1.2": 1002, |
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# Add new versions here |
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} |
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def __init__(self, authenticator): |
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self.db = None |
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self.fs = None |
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self.msg = None |
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self.authconn = None |
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self.config = None |
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# self.operations = None |
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self.logger = logging.getLogger("nbi.engine") |
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self.map_topic = {} |
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self.write_lock = None |
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# self.token_cache = token_cache |
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self.authenticator = authenticator |
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def start(self, config): |
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""" |
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Connect to database, filesystem storage, and messaging |
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:param config: two level dictionary with configuration. Top level should contain 'database', 'storage', |
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:return: None |
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""" |
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self.config = config |
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# check right version of common |
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if versiontuple(common_version) < versiontuple(min_common_version): |
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raise EngineException( |
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"Not compatible osm/common version '{}'. Needed '{}' or higher".format( |
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common_version, min_common_version |
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) |
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) |
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try: |
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if not self.db: |
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if config["database"]["driver"] == "mongo": |
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self.db = dbmongo.DbMongo() |
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self.db.db_connect(config["database"]) |
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elif config["database"]["driver"] == "memory": |
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self.db = dbmemory.DbMemory() |
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self.db.db_connect(config["database"]) |
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else: |
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raise EngineException( |
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"Invalid configuration param '{}' at '[database]':'driver'".format( |
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config["database"]["driver"] |
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) |
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) |
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if not self.fs: |
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if config["storage"]["driver"] == "local": |
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self.fs = fslocal.FsLocal() |
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self.fs.fs_connect(config["storage"]) |
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elif config["storage"]["driver"] == "mongo": |
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self.fs = fsmongo.FsMongo() |
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self.fs.fs_connect(config["storage"]) |
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else: |
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raise EngineException( |
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"Invalid configuration param '{}' at '[storage]':'driver'".format( |
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config["storage"]["driver"] |
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) |
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) |
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if not self.msg: |
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if config["message"]["driver"] == "local": |
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self.msg = msglocal.MsgLocal() |
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self.msg.connect(config["message"]) |
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elif config["message"]["driver"] == "kafka": |
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self.msg = msgkafka.MsgKafka() |
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self.msg.connect(config["message"]) |
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else: |
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raise EngineException( |
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"Invalid configuration param '{}' at '[message]':'driver'".format( |
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config["message"]["driver"] |
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) |
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) |
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if not self.authconn: |
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if config["authentication"]["backend"] == "keystone": |
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self.authconn = AuthconnKeystone( |
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config["authentication"], |
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self.db, |
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self.authenticator.role_permissions, |
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) |
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elif config["authentication"]["backend"] == "tacacs": |
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self.authconn = AuthconnTacacs( |
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config["authentication"], |
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self.db, |
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self.authenticator.role_permissions, |
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) |
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else: |
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self.authconn = AuthconnInternal( |
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config["authentication"], |
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self.db, |
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self.authenticator.role_permissions, |
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) |
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# if not self.operations: |
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# if "resources_to_operations" in config["rbac"]: |
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# resources_to_operations_file = config["rbac"]["resources_to_operations"] |
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# else: |
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# possible_paths = ( |
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# __file__[:__file__.rfind("engine.py")] + "resources_to_operations.yml", |
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# "./resources_to_operations.yml" |
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# ) |
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# for config_file in possible_paths: |
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# if path.isfile(config_file): |
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# resources_to_operations_file = config_file |
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# break |
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# if not resources_to_operations_file: |
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# raise EngineException("Invalid permission configuration:" |
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# "resources_to_operations file missing") |
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# |
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# with open(resources_to_operations_file, 'r') as f: |
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# resources_to_operations = yaml.safeload(f) |
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# |
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# self.operations = [] |
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# |
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# for _, value in resources_to_operations["resources_to_operations"].items(): |
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# if value not in self.operations: |
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# self.operations += [value] |
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|
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self.write_lock = Lock() |
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# create one class per topic |
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for topic, topic_class in self.map_from_topic_to_class.items(): |
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# if self.auth and topic_class in (UserTopicAuth, ProjectTopicAuth): |
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# self.map_topic[topic] = topic_class(self.db, self.fs, self.msg, self.auth) |
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self.map_topic[topic] = topic_class( |
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self.db, self.fs, self.msg, self.authconn |
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) |
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self.map_topic["pm_jobs"] = PmJobsTopic( |
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self.db, |
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config["prometheus"].get("host"), |
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config["prometheus"].get("port"), |
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) |
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except (DbException, FsException, MsgException) as e: |
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raise EngineException(str(e), http_code=e.http_code) |
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|
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def stop(self): |
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try: |
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if self.db: |
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self.db.db_disconnect() |
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if self.fs: |
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self.fs.fs_disconnect() |
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if self.msg: |
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self.msg.disconnect() |
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self.write_lock = None |
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except (DbException, FsException, MsgException) as e: |
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raise EngineException(str(e), http_code=e.http_code) |
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|
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def new_item( |
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self, rollback, session, topic, indata=None, kwargs=None, headers=None |
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): |
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""" |
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Creates a new entry into database. For nsds and vnfds it creates an almost empty DISABLED entry, |
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that must be completed with a call to method upload_content |
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:param rollback: list to append created items at database in case a rollback must to be done |
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:param session: contains the used login username and working project, force to avoid checkins, public |
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:param topic: it can be: users, projects, vim_accounts, sdns, nsrs, nsds, vnfds |
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:param indata: data to be inserted |
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:param kwargs: used to override the indata descriptor |
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:param headers: http request headers |
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:return: _id: identity of the inserted data. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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with self.write_lock: |
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return self.map_topic[topic].new(rollback, session, indata, kwargs, headers) |
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|
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def upload_content(self, session, topic, _id, indata, kwargs, headers): |
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""" |
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Upload content for an already created entry (_id) |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, |
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:param _id: server id of the item |
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:param indata: data to be inserted |
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:param kwargs: used to override the indata descriptor |
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:param headers: http request headers |
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:return: _id: identity of the inserted data. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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with self.write_lock: |
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return self.map_topic[topic].upload_content( |
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session, _id, indata, kwargs, headers |
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) |
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def get_item_list(self, session, topic, filter_q=None, api_req=False): |
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""" |
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Get a list of items |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, ... |
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:param filter_q: filter of data to be applied |
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:param api_req: True if this call is serving an external API request. False if serving internal request. |
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:return: The list, it can be empty if no one match the filter_q. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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return self.map_topic[topic].list(session, filter_q, api_req) |
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|
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def get_item(self, session, topic, _id, filter_q=None, api_req=False): |
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""" |
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Get complete information on an item |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, |
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:param _id: server id of the item |
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:param filter_q: other arguments |
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:param api_req: True if this call is serving an external API request. False if serving internal request. |
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:return: dictionary, raise exception if not found. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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return self.map_topic[topic].show(session, _id, filter_q, api_req) |
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|
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def get_file(self, session, topic, _id, path=None, accept_header=None): |
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""" |
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Get descriptor package or artifact file content |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, |
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:param _id: server id of the item |
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:param path: artifact path or "$DESCRIPTOR" or None |
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:param accept_header: Content of Accept header. Must contain applition/zip or/and text/plain |
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:return: opened file plus Accept format or raises an exception |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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return self.map_topic[topic].get_file(session, _id, path, accept_header) |
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|
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def del_item_list(self, session, topic, _filter=None): |
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""" |
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Delete a list of items |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, ... |
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:param _filter: filter of data to be applied |
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:return: The deleted list, it can be empty if no one match the _filter. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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with self.write_lock: |
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return self.map_topic[topic].delete_list(session, _filter) |
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|
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def del_item(self, session, topic, _id, not_send_msg=None): |
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""" |
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Delete item by its internal id |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, ... |
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:param _id: server id of the item |
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:param not_send_msg: If False, message will not be sent to kafka. |
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If a list, message is not sent, but content is stored in this variable so that the caller can send this |
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message using its own loop. If None, message is sent |
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:return: dictionary with deleted item _id. It raises exception if not found. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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with self.write_lock: |
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return self.map_topic[topic].delete(session, _id, not_send_msg=not_send_msg) |
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|
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def edit_item(self, session, topic, _id, indata=None, kwargs=None): |
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""" |
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Update an existing entry at database |
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:param session: contains the used login username and working project |
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:param topic: it can be: users, projects, vnfds, nsds, ... |
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:param _id: identifier to be updated |
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:param indata: data to be inserted |
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:param kwargs: used to override the indata descriptor |
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:return: dictionary with edited item _id, raise exception if not found. |
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""" |
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if topic not in self.map_topic: |
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raise EngineException( |
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"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
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) |
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with self.write_lock: |
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return self.map_topic[topic].edit(session, _id, indata, kwargs) |
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|
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def cancel_item( |
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self, rollback, session, topic, indata=None, kwargs=None, headers=None |
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): |
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""" |
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Cancels an item |
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:param rollback: list to append created items at database in case a rollback must to be done |
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:param session: contains the used login username and working project, force to avoid checkins, public |
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:param topic: it can be: users, projects, vim_accounts, sdns, nsrs, nsds, vnfds |
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:param indata: data to be inserted |
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:param kwargs: used to override the indata descriptor |
| 393 |
|
:param headers: http request headers |
| 394 |
|
:return: _id: identity of the inserted data. |
| 395 |
|
""" |
| 396 |
0 |
if topic not in self.map_topic: |
| 397 |
0 |
raise EngineException( |
| 398 |
|
"Unknown topic {}!!!".format(topic), HTTPStatus.INTERNAL_SERVER_ERROR |
| 399 |
|
) |
| 400 |
0 |
with self.write_lock: |
| 401 |
0 |
self.map_topic[topic].cancel(rollback, session, indata, kwargs, headers) |
| 402 |
|
|
| 403 |
1 |
def upgrade_db(self, current_version, target_version): |
| 404 |
0 |
if target_version not in self.map_target_version_to_int.keys(): |
| 405 |
0 |
raise EngineException( |
| 406 |
|
"Cannot upgrade to version '{}' with this version of code".format( |
| 407 |
|
target_version |
| 408 |
|
), |
| 409 |
|
http_code=HTTPStatus.INTERNAL_SERVER_ERROR, |
| 410 |
|
) |
| 411 |
|
|
| 412 |
0 |
if current_version == target_version: |
| 413 |
0 |
return |
| 414 |
|
|
| 415 |
0 |
target_version_int = self.map_target_version_to_int[target_version] |
| 416 |
|
|
| 417 |
0 |
if not current_version: |
| 418 |
|
# create database version |
| 419 |
0 |
serial = urandom(32) |
| 420 |
0 |
version_data = { |
| 421 |
|
"_id": "version", # Always "version" |
| 422 |
|
"version_int": 1000, # version number |
| 423 |
|
"version": "1.0", # version text |
| 424 |
|
"date": "2018-10-25", # version date |
| 425 |
|
"description": "added serial", # changes in this version |
| 426 |
|
"status": "ENABLED", # ENABLED, DISABLED (migration in process), ERROR, |
| 427 |
|
"serial": b64encode(serial), |
| 428 |
|
} |
| 429 |
0 |
self.db.create("admin", version_data) |
| 430 |
0 |
self.db.set_secret_key(serial) |
| 431 |
0 |
current_version = "1.0" |
| 432 |
|
|
| 433 |
0 |
if ( |
| 434 |
|
current_version in ("1.0", "1.1") |
| 435 |
|
and target_version_int >= self.map_target_version_to_int["1.2"] |
| 436 |
|
): |
| 437 |
0 |
if self.config["authentication"]["backend"] == "internal": |
| 438 |
0 |
self.db.del_list("roles") |
| 439 |
|
|
| 440 |
0 |
version_data = { |
| 441 |
|
"_id": "version", |
| 442 |
|
"version_int": 1002, |
| 443 |
|
"version": "1.2", |
| 444 |
|
"date": "2019-06-11", |
| 445 |
|
"description": "set new format for roles_operations", |
| 446 |
|
} |
| 447 |
|
|
| 448 |
0 |
self.db.set_one("admin", {"_id": "version"}, version_data) |
| 449 |
0 |
current_version = "1.2" |
| 450 |
|
# TODO add future migrations here |
| 451 |
|
|
| 452 |
1 |
def init_db(self, target_version="1.0"): |
| 453 |
|
""" |
| 454 |
|
Init database if empty. If not empty it checks that database version and migrates if needed |
| 455 |
|
If empty, it creates a new user admin/admin at 'users' and a new entry at 'version' |
| 456 |
|
:param target_version: check desired database version. Migrate to it if possible or raises exception |
| 457 |
|
:return: None if ok, exception if error or if the version is different. |
| 458 |
|
""" |
| 459 |
|
|
| 460 |
0 |
version_data = self.db.get_one( |
| 461 |
|
"admin", {"_id": "version"}, fail_on_empty=False, fail_on_more=True |
| 462 |
|
) |
| 463 |
|
# check database status is ok |
| 464 |
0 |
if version_data and version_data.get("status") != "ENABLED": |
| 465 |
0 |
raise EngineException( |
| 466 |
|
"Wrong database status '{}'".format(version_data["status"]), |
| 467 |
|
HTTPStatus.INTERNAL_SERVER_ERROR, |
| 468 |
|
) |
| 469 |
|
|
| 470 |
|
# check version |
| 471 |
0 |
db_version = None if not version_data else version_data.get("version") |
| 472 |
0 |
if db_version != target_version: |
| 473 |
0 |
self.upgrade_db(db_version, target_version) |
| 474 |
|
|
| 475 |
0 |
return |
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