69ac4253235fc6fdf2714034ecd613defffb7c18
15 log
= logging
.getLogger("websocket")
22 # Connect to an arbitrary api server
23 client = await Connection.connect(
24 api_endpoint, model_uuid, username, password, cacert)
26 # Connect using a controller/model name
27 client = await Connection.connect_model('local.local:default')
29 # Connect to the currently active model
30 client = await Connection.connect_current()
33 def __init__(self
, endpoint
, uuid
, username
, password
, cacert
=None):
34 self
.endpoint
= endpoint
36 self
.username
= username
37 self
.password
= password
40 self
.__request
_id
__ = 0
45 def _get_ssl(self
, cert
):
46 return ssl
.create_default_context(
47 purpose
=ssl
.Purpose
.CLIENT_AUTH
, cadata
=cert
)
49 async def open(self
, addr
, cert
=None):
52 kw
['ssl'] = self
._get
_ssl
(cert
)
54 self
.ws
= await websockets
.connect(addr
, **kw
)
57 async def close(self
):
61 result
= await self
.ws
.recv()
62 if result
is not None:
63 result
= json
.loads(result
)
66 async def rpc(self
, msg
, encoder
=None):
67 self
.__request
_id
__ += 1
68 msg
['request-id'] = self
.__request
_id
__
69 if'params' not in msg
:
71 if "version" not in msg
:
72 msg
['version'] = self
.facades
[msg
['type']]
73 outgoing
= json
.dumps(msg
, indent
=2, cls
=encoder
)
74 await self
.ws
.send(outgoing
)
75 result
= await self
.recv()
76 #log.debug("Send: %s", outgoing)
77 #log.debug("Recv: %s", result)
78 if result
and 'error' in result
:
79 raise RuntimeError(result
)
82 async def clone(self
):
83 """Return a new Connection, connected to the same websocket endpoint
87 return await Connection
.connect(
95 async def controller(self
):
96 """Return a Connection to the controller at self.endpoint
99 return await Connection
.connect(
108 async def connect(cls
, endpoint
, uuid
, username
, password
, cacert
=None):
109 """Connect to the websocket.
111 If uuid is None, the connection will be to the controller. Otherwise it
112 will be to the model.
116 url
= "wss://{}/model/{}/api".format(endpoint
, uuid
)
118 url
= "wss://{}/api".format(endpoint
)
119 client
= cls(endpoint
, uuid
, username
, password
, cacert
)
120 await client
.open(url
, cacert
)
121 server_info
= await client
.login(username
, password
)
122 client
.build_facades(server_info
['facades'])
123 log
.info("Driver connected to juju %s", url
)
128 async def connect_current(cls
):
129 """Connect to the currently active model.
132 jujudata
= JujuData()
133 controller_name
= jujudata
.current_controller()
134 controller
= jujudata
.controllers()[controller_name
]
135 endpoint
= controller
['api-endpoints'][0]
136 cacert
= controller
.get('ca-cert')
137 accounts
= jujudata
.accounts()[controller_name
]
138 username
= accounts
['user']
139 password
= accounts
['password']
140 models
= jujudata
.models()[controller_name
]
141 model_name
= models
['current-model']
142 model_uuid
= models
['models'][model_name
]['uuid']
144 return await cls
.connect(
145 endpoint
, model_uuid
, username
, password
, cacert
)
148 async def connect_model(cls
, model
):
149 """Connect to a model by name.
151 :param str model: <controller>:<model>
154 controller_name
, model_name
= model
.split(':')
156 jujudata
= JujuData()
157 controller
= jujudata
.controllers()[controller_name
]
158 endpoint
= controller
['api-endpoints'][0]
159 cacert
= controller
.get('ca-cert')
160 accounts
= jujudata
.accounts()[controller_name
]
161 username
= accounts
['user']
162 password
= accounts
['password']
163 models
= jujudata
.models()[controller_name
]
164 model_uuid
= models
['models'][model_name
]['uuid']
166 return await cls
.connect(
167 endpoint
, model_uuid
, username
, password
, cacert
)
169 def build_facades(self
, info
):
172 self
.facades
[facade
['name']] = facade
['versions'][-1]
174 async def login(self
, username
, password
):
175 if not username
.startswith('user-'):
176 username
= 'user-{}'.format(username
)
178 result
= await self
.rpc({
183 "auth-tag": username
,
184 "credentials": password
,
185 "nonce": "".join(random
.sample(string
.printable
, 12)),
187 return result
['response']
192 self
.path
= os
.environ
.get('JUJU_DATA') or '~/.local/share/juju'
193 self
.path
= os
.path
.abspath(os
.path
.expanduser(self
.path
))
195 def current_controller(self
):
196 cmd
= shlex
.split('juju show-controller --format yaml')
197 output
= subprocess
.check_output(cmd
)
198 output
= yaml
.safe_load(output
)
199 return list(output
.keys())[0]
201 def controllers(self
):
202 return self
._load
_yaml
('controllers.yaml', 'controllers')
205 return self
._load
_yaml
('models.yaml', 'controllers')
208 return self
._load
_yaml
('accounts.yaml', 'controllers')
210 def _load_yaml(self
, filename
, key
):
211 filepath
= os
.path
.join(self
.path
, filename
)
212 with io
.open(filepath
, 'rt') as f
:
213 return yaml
.safe_load(f
)[key
]