1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
import os
import json
from shutil import copyfile, rmtree
from docker.tls import TLSConfig
from docker.errors import ContextException
from docker.context.config import get_meta_dir
from docker.context.config import get_meta_file
from docker.context.config import get_tls_dir
from docker.context.config import get_context_host
class Context:
"""A context."""
def __init__(self, name, orchestrator=None, host=None, endpoints=None,
tls=False):
if not name:
raise Exception("Name not provided")
self.name = name
self.context_type = None
self.orchestrator = orchestrator
self.endpoints = {}
self.tls_cfg = {}
self.meta_path = "IN MEMORY"
self.tls_path = "IN MEMORY"
if not endpoints:
# set default docker endpoint if no endpoint is set
default_endpoint = "docker" if (
not orchestrator or orchestrator == "swarm"
) else orchestrator
self.endpoints = {
default_endpoint: {
"Host": get_context_host(host, tls),
"SkipTLSVerify": not tls
}
}
return
# check docker endpoints
for k, v in endpoints.items():
if not isinstance(v, dict):
# unknown format
raise ContextException("""Unknown endpoint format for
context {}: {}""".format(name, v))
self.endpoints[k] = v
if k != "docker":
continue
self.endpoints[k]["Host"] = v.get("Host", get_context_host(
host, tls))
self.endpoints[k]["SkipTLSVerify"] = bool(v.get(
"SkipTLSVerify", not tls))
def set_endpoint(
self, name="docker", host=None, tls_cfg=None,
skip_tls_verify=False, def_namespace=None):
self.endpoints[name] = {
"Host": get_context_host(host, not skip_tls_verify),
"SkipTLSVerify": skip_tls_verify
}
if def_namespace:
self.endpoints[name]["DefaultNamespace"] = def_namespace
if tls_cfg:
self.tls_cfg[name] = tls_cfg
def inspect(self):
return self.__call__()
@classmethod
def load_context(cls, name):
meta = Context._load_meta(name)
if meta:
instance = cls(
meta["Name"],
orchestrator=meta["Metadata"].get("StackOrchestrator", None),
endpoints=meta.get("Endpoints", None))
instance.context_type = meta["Metadata"].get("Type", None)
instance._load_certs()
instance.meta_path = get_meta_dir(name)
return instance
return None
@classmethod
def _load_meta(cls, name):
meta_file = get_meta_file(name)
if not os.path.isfile(meta_file):
return None
metadata = {}
try:
with open(meta_file) as f:
metadata = json.load(f)
except (IOError, KeyError, ValueError) as e:
# unknown format
raise Exception("""Detected corrupted meta file for
context {} : {}""".format(name, e))
# for docker endpoints, set defaults for
# Host and SkipTLSVerify fields
for k, v in metadata["Endpoints"].items():
if k != "docker":
continue
metadata["Endpoints"][k]["Host"] = v.get(
"Host", get_context_host(None, False))
metadata["Endpoints"][k]["SkipTLSVerify"] = bool(
v.get("SkipTLSVerify", True))
return metadata
def _load_certs(self):
certs = {}
tls_dir = get_tls_dir(self.name)
for endpoint in self.endpoints.keys():
if not os.path.isdir(os.path.join(tls_dir, endpoint)):
continue
ca_cert = None
cert = None
key = None
for filename in os.listdir(os.path.join(tls_dir, endpoint)):
if filename.startswith("ca"):
ca_cert = os.path.join(tls_dir, endpoint, filename)
elif filename.startswith("cert"):
cert = os.path.join(tls_dir, endpoint, filename)
elif filename.startswith("key"):
key = os.path.join(tls_dir, endpoint, filename)
if all([ca_cert, cert, key]):
verify = None
if endpoint == "docker" and not self.endpoints["docker"].get(
"SkipTLSVerify", False):
verify = True
certs[endpoint] = TLSConfig(
client_cert=(cert, key), ca_cert=ca_cert, verify=verify)
self.tls_cfg = certs
self.tls_path = tls_dir
def save(self):
meta_dir = get_meta_dir(self.name)
if not os.path.isdir(meta_dir):
os.makedirs(meta_dir)
with open(get_meta_file(self.name), "w") as f:
f.write(json.dumps(self.Metadata))
tls_dir = get_tls_dir(self.name)
for endpoint, tls in self.tls_cfg.items():
if not os.path.isdir(os.path.join(tls_dir, endpoint)):
os.makedirs(os.path.join(tls_dir, endpoint))
ca_file = tls.ca_cert
if ca_file:
copyfile(ca_file, os.path.join(
tls_dir, endpoint, os.path.basename(ca_file)))
if tls.cert:
cert_file, key_file = tls.cert
copyfile(cert_file, os.path.join(
tls_dir, endpoint, os.path.basename(cert_file)))
copyfile(key_file, os.path.join(
tls_dir, endpoint, os.path.basename(key_file)))
self.meta_path = get_meta_dir(self.name)
self.tls_path = get_tls_dir(self.name)
def remove(self):
if os.path.isdir(self.meta_path):
rmtree(self.meta_path)
if os.path.isdir(self.tls_path):
rmtree(self.tls_path)
def __repr__(self):
return "<%s: '%s'>" % (self.__class__.__name__, self.name)
def __str__(self):
return json.dumps(self.__call__(), indent=2)
def __call__(self):
result = self.Metadata
result.update(self.TLSMaterial)
result.update(self.Storage)
return result
def is_docker_host(self):
return self.context_type is None
@property
def Name(self):
return self.name
@property
def Host(self):
if not self.orchestrator or self.orchestrator == "swarm":
endpoint = self.endpoints.get("docker", None)
if endpoint:
return endpoint.get("Host", None)
return None
return self.endpoints[self.orchestrator].get("Host", None)
@property
def Orchestrator(self):
return self.orchestrator
@property
def Metadata(self):
meta = {}
if self.orchestrator:
meta = {"StackOrchestrator": self.orchestrator}
return {
"Name": self.name,
"Metadata": meta,
"Endpoints": self.endpoints
}
@property
def TLSConfig(self):
key = self.orchestrator
if not key or key == "swarm":
key = "docker"
if key in self.tls_cfg.keys():
return self.tls_cfg[key]
return None
@property
def TLSMaterial(self):
certs = {}
for endpoint, tls in self.tls_cfg.items():
cert, key = tls.cert
certs[endpoint] = list(
map(os.path.basename, [tls.ca_cert, cert, key]))
return {
"TLSMaterial": certs
}
@property
def Storage(self):
return {
"Storage": {
"MetadataPath": self.meta_path,
"TLSPath": self.tls_path
}}
|
