|
1
|
|
|
# encoding: utf-8 |
|
2
|
|
|
""" |
|
3
|
|
|
environment.py |
|
4
|
|
|
|
|
5
|
|
|
Created by Thomas Mangin on 2011-11-29. |
|
6
|
|
|
Copyright (c) 2011-2017 Exa Networks. All rights reserved. |
|
7
|
|
|
License: 3-clause BSD. (See the COPYRIGHT file) |
|
8
|
|
|
""" |
|
9
|
|
|
|
|
10
|
|
|
import os |
|
11
|
|
|
|
|
12
|
|
|
import configparser as ConfigParser |
|
13
|
|
|
|
|
14
|
|
|
from exabgp.environment import base |
|
15
|
|
|
from exabgp.environment import parsing |
|
16
|
|
|
from exabgp.environment.base import ENVFILE |
|
17
|
|
|
from exabgp.environment.hashtable import HashTable |
|
18
|
|
|
from exabgp.environment.hashtable import GlobalHashTable |
|
19
|
|
|
|
|
20
|
|
|
|
|
21
|
|
|
class NoneDict(dict): |
|
22
|
|
|
def __getitem__(self, name): |
|
23
|
|
|
return None |
|
24
|
|
|
|
|
25
|
|
|
|
|
26
|
|
|
nonedict = NoneDict() |
|
27
|
|
|
|
|
28
|
|
|
|
|
29
|
|
|
class Env(object): |
|
30
|
|
|
_setup = False |
|
31
|
|
|
|
|
32
|
|
|
# the configuration to be set by the program |
|
33
|
|
|
definition = {} |
|
34
|
|
|
|
|
35
|
|
|
# one copy of the global configuration |
|
36
|
|
|
_env = GlobalHashTable() |
|
37
|
|
|
|
|
38
|
|
|
@classmethod |
|
39
|
|
|
def default(cls): |
|
40
|
|
|
for section in sorted(cls.definition): |
|
41
|
|
|
if section in ('internal', 'debug'): |
|
42
|
|
|
continue |
|
43
|
|
|
for option in sorted(cls.definition[section]): |
|
44
|
|
|
values = cls.definition[section][option] |
|
45
|
|
|
default = ( |
|
46
|
|
|
"'%s'" % values['value'] |
|
47
|
|
|
if values['write'] in (parsing.list, parsing.path, parsing.quote, parsing.syslog_name) |
|
48
|
|
|
else values['value'] |
|
49
|
|
|
) |
|
50
|
|
|
yield '%s.%s.%s %s %s. default (%s)' % ( |
|
51
|
|
|
base.APPLICATION, |
|
52
|
|
|
section, |
|
53
|
|
|
option, |
|
54
|
|
|
' ' * (18 - len(section) - len(option)), |
|
55
|
|
|
values['help'], |
|
56
|
|
|
default, |
|
57
|
|
|
) |
|
58
|
|
|
|
|
59
|
|
|
@classmethod |
|
60
|
|
|
def iter_ini(cls, diff=False): |
|
61
|
|
|
for section in sorted(cls._env): |
|
62
|
|
|
if section in ('internal', 'debug'): |
|
63
|
|
|
continue |
|
64
|
|
|
header = '\n[%s.%s]' % (base.APPLICATION, section) |
|
65
|
|
|
for k in sorted(cls._env[section]): |
|
66
|
|
|
v = cls._env[section][k] |
|
67
|
|
|
func = cls.definition[section][k]['read'] |
|
68
|
|
|
value = cls.definition[section][k]['value'] |
|
69
|
|
|
if diff and func(value) == v: |
|
70
|
|
|
continue |
|
71
|
|
|
if header: |
|
72
|
|
|
yield header |
|
73
|
|
|
header = '' |
|
74
|
|
|
yield '%s = %s' % (k, cls.definition[section][k]['write'](v)) |
|
75
|
|
|
|
|
76
|
|
|
@classmethod |
|
77
|
|
|
def iter_env(cls, diff=False): |
|
78
|
|
|
for section, values in cls._env.items(): |
|
79
|
|
|
if section in ('internal', 'debug'): |
|
80
|
|
|
continue |
|
81
|
|
|
for k, v in values.items(): |
|
82
|
|
|
func = cls.definition[section][k]['read'] |
|
83
|
|
|
value = cls.definition[section][k]['value'] |
|
84
|
|
|
if diff and func(value) == v: |
|
85
|
|
|
continue |
|
86
|
|
|
if cls.definition[section][k]['write'] == parsing.quote: |
|
87
|
|
|
yield "%s.%s.%s='%s'" % (base.APPLICATION, section, k, v) |
|
88
|
|
|
continue |
|
89
|
|
|
yield "%s.%s.%s=%s" % ( |
|
90
|
|
|
base.APPLICATION, |
|
91
|
|
|
section, |
|
92
|
|
|
k, |
|
93
|
|
|
cls.definition[section][k]['write'](v), |
|
94
|
|
|
) |
|
95
|
|
|
|
|
96
|
|
|
@classmethod |
|
97
|
|
|
def setup(cls, configuration): |
|
98
|
|
|
if cls._setup: |
|
99
|
|
|
return {} |
|
100
|
|
|
cls._setup = True |
|
101
|
|
|
cls.definition = configuration |
|
102
|
|
|
|
|
103
|
|
|
ini = ConfigParser.ConfigParser() |
|
104
|
|
|
|
|
105
|
|
|
_conf_paths = [ |
|
106
|
|
|
ENVFILE, |
|
107
|
|
|
] |
|
108
|
|
|
|
|
109
|
|
|
ini_files = [path for path in _conf_paths if os.path.exists(path)] |
|
110
|
|
|
if ini_files: |
|
111
|
|
|
ini.read(ini_files[0]) |
|
112
|
|
|
|
|
113
|
|
|
for section in cls.definition: |
|
114
|
|
|
default = cls.definition[section] |
|
115
|
|
|
|
|
116
|
|
|
for option in default: |
|
117
|
|
|
convert = default[option]['read'] |
|
118
|
|
|
try: |
|
119
|
|
|
proxy_section = '%s.%s' % (base.APPLICATION, section) |
|
120
|
|
|
env_name = '%s.%s' % (proxy_section, option) |
|
121
|
|
|
rep_name = env_name.replace('.', '_') |
|
122
|
|
|
|
|
123
|
|
|
if env_name in os.environ: |
|
124
|
|
|
conf = os.environ.get(env_name) |
|
125
|
|
|
elif rep_name in os.environ: |
|
126
|
|
|
conf = os.environ.get(rep_name) |
|
127
|
|
|
else: |
|
128
|
|
|
conf = parsing.unquote(ini.get(proxy_section, option, vars=nonedict)) |
|
129
|
|
|
# name without an = or : in the configuration and no value |
|
130
|
|
|
if conf is None: |
|
131
|
|
|
conf = default[option]['value'] |
|
132
|
|
|
except (ConfigParser.NoSectionError, ConfigParser.NoOptionError): |
|
133
|
|
|
conf = default[option]['value'] |
|
134
|
|
|
try: |
|
135
|
|
|
cls._env.setdefault(section, HashTable())[option] = convert(conf) |
|
|
|
|
|
|
136
|
|
|
except TypeError: |
|
137
|
|
|
raise ValueError('invalid value for %s.%s : %s' % (section, option, conf)) |
|
138
|
|
|
|
|
139
|
|
|
@classmethod |
|
140
|
|
|
def settings(cls): |
|
141
|
|
|
return cls._env |
|
142
|
|
|
|
Exa-Networks /
exabgp
Loading history...