o2dms/api/dms_lcm_view.py

   1 # Copyright (C) 2021 Wind River Systems, Inc.
   2 #
   3 #  Licensed under the Apache License, Version 2.0 (the "License");
   4 #  you may not use this file except in compliance with the License.
   5 #  You may obtain a copy of the License at
   6 #
   7 #      http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 #  Unless required by applicable law or agreed to in writing, software
  10 #  distributed under the License is distributed on an "AS IS" BASIS,
  11 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 #  See the License for the specific language governing permissions and
  13 #  limitations under the License.
  14
  15 import string
  16 import random
  17 import yaml
  18 from datetime import datetime
  19
  20 # from sqlalchemy import select
  21 from o2common.service import unit_of_work
  22 # from o2ims.adapter.orm import deploymentmanager
  23 from o2common.helper import o2logging
  24 from o2common.config import config
  25 logger = o2logging.get_logger(__name__)
  26
  27
  28 def deployment_managers(uow: unit_of_work.AbstractUnitOfWork):
  29     # with uow:
  30     # res = uow.session.execute(select(deploymentmanager))
  31     # return [dict(r) for r in res]
  32     with uow:
  33         li = uow.deployment_managers.list()
  34     return [r.serialize() for r in li]
  35
  36
  37 def deployment_manager_one(deploymentManagerId: str,
  38                            uow: unit_of_work.AbstractUnitOfWork,
  39                            profile: str = 'params'):
  40     # with uow:
  41     #     res = uow.session.execute(select(deploymentmanager).where(
  42     #         deploymentmanager.c.deploymentManagerId == deploymentManagerId))
  43     #     first = res.first()
  44     # return None if first is None else dict(first)
  45     # with uow:
  46     # first = uow.deployment_managers.get(deploymentManagerId)
  47     # return first.serialize() if first is not None else None
  48     with uow:
  49         first = uow.deployment_managers.get(deploymentManagerId)
  50         if first is None:
  51             return first
  52         result = first.serialize()
  53
  54     if "params" == profile:
  55         pass
  56     elif "file" == profile and result.hasattr("profile"):
  57         p = result.pop("profile", None)
  58         result["profile"] = _gen_kube_config(deploymentManagerId, p)
  59     else:
  60         result.pop("profile", None)
  61
  62     return result
  63
  64
  65 def _gen_kube_config(dmId: str, kubeconfig: dict) -> dict:
  66
  67     # KUBECONFIG environment variable
  68     # reference:
  69     # https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/
  70     data = {
  71         'apiVersion': 'v1',
  72         'clusters': [
  73             {
  74                 'cluster': {
  75                     'server':
  76                     kubeconfig.pop('cluster_api_endpoint', None),
  77                     'certificate-authority-data':
  78                     kubeconfig.pop('cluster_ca_cert', None),
  79                 },
  80                 'name': 'inf-cluster'
  81             }],
  82         'contexts': [
  83             {
  84                 'context': {
  85                     'cluster': 'inf-cluster',
  86                     'user': 'kubernetes-admin'
  87                 },
  88                 'name': 'kubernetes-admin@inf-cluster'
  89             }
  90         ],
  91         'current-context': 'kubernetes-admin@inf-cluster',
  92         'kind': 'Config',
  93         'preferences': {},
  94         'users': [
  95             {
  96                 'name': kubeconfig.pop('admin_user', None),
  97                 'user': {
  98                     'client-certificate-data':
  99                     kubeconfig.pop('admin_client_cert', None),
 100                     'client-key-data':
 101                     kubeconfig.pop('admin_client_key', None),
 102                 }
 103             }]
 104     }
 105
 106     # Generate a random key for tmp kube config file
 107     letters = string.ascii_uppercase
 108     random_key = ''.join(random.choice(letters) for i in range(10))
 109
 110     # Get datetime of now as tag of the tmp file
 111     current_time = datetime.now().strftime("%Y%m%d%H%M%S")
 112     tmp_file_name = random_key + "_" + current_time
 113
 114     # write down the yaml file of kubectl into tmp folder
 115     with open('/tmp/kubeconfig_' + tmp_file_name, 'w') as file:
 116         yaml.dump(data, file)
 117
 118     kubeconfig["kube_config_file"] = config.get_api_url() + \
 119         config.get_o2dms_api_base() + "/" + dmId + "/download/" + tmp_file_name
 120
 121     return kubeconfig