common/python/rift/mano/cloud/accounts.py

   1
   2 #
   3 #   Copyright 2016 RIFT.IO Inc
   4 #
   5 #   Licensed under the Apache License, Version 2.0 (the "License");
   6 #   you may not use this file except in compliance with the License.
   7 #   You may obtain a copy of the License at
   8 #
   9 #       http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 #   Unless required by applicable law or agreed to in writing, software
  12 #   distributed under the License is distributed on an "AS IS" BASIS,
  13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 #   See the License for the specific language governing permissions and
  15 #   limitations under the License.
  16 #
  17
  18 import sys
  19 import asyncio
  20 from gi import require_version
  21 require_version('RwcalYang', '1.0')
  22 require_version('RwTypes', '1.0')
  23 require_version('RwCloudYang', '1.0')
  24 require_version('RwCal', '1.0')
  25
  26 from gi.repository import (
  27         RwTypes,
  28         RwcalYang,
  29         RwCloudYang,
  30         )
  31 import rw_peas
  32
  33 if sys.version_info < (3, 4, 4):
  34     asyncio.ensure_future = asyncio.async
  35
  36
  37 class PluginLoadingError(Exception):
  38     pass
  39
  40
  41 class CloudAccountCalError(Exception):
  42     pass
  43
  44
  45 class CloudAccount(object):
  46     def __init__(self, log, rwlog_hdl, account_msg):
  47         self._log = log
  48         self._account_msg = account_msg.deep_copy()
  49
  50         self._cal_plugin = None
  51         self._engine = None
  52
  53         self._cal = self.plugin.get_interface("Cloud")
  54         self._cal.init(rwlog_hdl)
  55
  56         self._status = RwCloudYang.CloudAccount_ConnectionStatus(
  57                 status="unknown",
  58                 details="Connection status lookup not started"
  59                 )
  60
  61         self._validate_task = None
  62
  63     @property
  64     def plugin(self):
  65         if self._cal_plugin is None:
  66             try:
  67                 self._cal_plugin = rw_peas.PeasPlugin(
  68                         getattr(self._account_msg, self.account_type).plugin_name,
  69                         'RwCal-1.0',
  70                         )
  71
  72             except AttributeError as e:
  73                 raise PluginLoadingError(str(e))
  74
  75             self._engine, _, _ = self._cal_plugin()
  76
  77         return self._cal_plugin
  78
  79     def _wrap_status_fn(self, fn, *args, **kwargs):
  80         ret = fn(*args, **kwargs)
  81         rw_status = ret[0]
  82         if rw_status != RwTypes.RwStatus.SUCCESS:
  83             msg = "%s returned %s" % (fn.__name__, str(rw_status))
  84             self._log.error(msg)
  85             raise CloudAccountCalError(msg)
  86
  87         # If there was only one other return value besides rw_status, then just
  88         # return that element.  Otherwise return the rest of the return values
  89         # as a list.
  90         return ret[1] if len(ret) == 2 else ret[1:]
  91
  92     @property
  93     def cal(self):
  94         return self._cal
  95
  96     @property
  97     def name(self):
  98         return self._account_msg.name
  99
 100     @property
 101     def account_msg(self):
 102         return self._account_msg
 103
 104     @property
 105     def cal_account_msg(self):
 106         return RwcalYang.CloudAccount.from_dict(
 107                 self.account_msg.as_dict(),
 108                 ignore_missing_keys=True,
 109                 )
 110
 111     def cloud_account_msg(self, account_dict):
 112         self._account_msg = RwCloudYang.CloudAccount.from_dict(account_dict)
 113
 114     @property
 115     def account_type(self):
 116         return self._account_msg.account_type
 117
 118     @property
 119     def connection_status(self):
 120         return self._status
 121
 122     def update_from_cfg(self, cfg):
 123         self._log.debug("Updating parent CloudAccount to %s", cfg)
 124
 125         # Hack to catch updates triggered from apply_callback when a sdn-account is removed
 126         # from a cloud-account. To be fixed properly when updates are handled
 127         if (self.account_msg.name == cfg.name
 128                 and self.account_msg.account_type == cfg.account_type):
 129             return
 130
 131         if cfg.has_field("sdn_account"):
 132             self.account_msg.sdn_account = cfg.sdn_account
 133         else:
 134             raise NotImplementedError("Update cloud account not yet supported")
 135
 136     def create_image(self, image_info_msg):
 137         image_id = self._wrap_status_fn(
 138                 self.cal.create_image, self.cal_account_msg, image_info_msg
 139                 )
 140
 141         return image_id
 142
 143     def get_image_list(self):
 144         self._log.debug("Getting image list from account: %s", self.name)
 145         resources = self._wrap_status_fn(
 146                 self.cal.get_image_list, self.cal_account_msg
 147                 )
 148
 149         return resources.imageinfo_list
 150
 151     @asyncio.coroutine
 152     def validate_cloud_account_credentials(self, loop):
 153         self._log.debug("Validating Cloud Account credentials %s", self._account_msg)
 154         self._status = RwCloudYang.CloudAccount_ConnectionStatus(
 155                 status="validating",
 156                 details="Cloud account connection validation in progress"
 157                 )
 158         rwstatus, status = yield from loop.run_in_executor(
 159                 None,
 160                 self._cal.validate_cloud_creds,
 161                 self.cal_account_msg,
 162                 )
 163         if rwstatus == RwTypes.RwStatus.SUCCESS:
 164             self._status = RwCloudYang.CloudAccount_ConnectionStatus.from_dict(status.as_dict())
 165         else:
 166             self._status = RwCloudYang.CloudAccount_ConnectionStatus(
 167                     status="failure",
 168                     details="Error when calling CAL validate cloud creds"
 169                     )
 170
 171         self._log.info("Got cloud account validation response: %s", self._status)
 172
 173     def start_validate_credentials(self, loop):
 174         if self._validate_task is not None:
 175             self._validate_task.cancel()
 176             self._validate_task = None
 177
 178         self._validate_task = asyncio.ensure_future(
 179                 self.validate_cloud_account_credentials(loop),
 180                 loop=loop
 181                 )
 182