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
|
'''This module implements a config file repository'''
__revision__ = '$Revision$'
import binascii, logging, os, re, tempfile, Bcfg2.Server.Plugin
logger = logging.getLogger('Bcfg2.Plugins.Cfg')
def process_delta(data, delta):
if not delta.specific.delta:
return data
if delta.specific.delta == 'cat':
datalines = data.split('\n')
for line in delta.data.split('\n'):
if not line:
continue
if line[0] == '+':
datalines.append(line[1:])
elif line[0] == '-':
if line[1:] in datalines:
datalines.remove(line[1:])
return "\n".join(datalines) + "\n"
elif delta.op == 'diff':
basefile = open(tempfile.mktemp(), 'w')
basefile.write(data)
basefile.close()
dfile = open(tempfile.mktemp(), 'w')
dfile.write(delta.data)
dfile.close()
ret = os.system("patch -uf %s < %s > /dev/null 2>&1" \
% (basefile.name, dfile.name))
output = open(basefile.name, 'r').read()
[os.unlink(fname) for fname in [basefile.name, dfile.name]]
if ret >> 8 != 0:
raise Bcfg2.Server.Plugin.PluginExecutionError, ('delta', delta)
return output
class CfgMatcher:
def __init__(self, fname):
name = re.escape(fname)
self.basefile_reg = re.compile('^(?P<basename>%s)(|\\.H_(?P<hostname>\S+)|.G(?P<prio>\d+)_(?P<group>\S+))$' % name)
self.delta_reg = re.compile('^(?P<basename>%s)(|\\.H_(?P<hostname>\S+)|\\.G(?P<prio>\d+)_(?P<group>\S+))\\.(?P<delta>(cat|diff))$' % fname)
self.cat_count = fname.count(".cat")
self.diff_count = fname.count(".diff")
def match(self, fname):
if fname.count(".cat") > self.cat_count \
or fname.count('.diff') > self.diff_count:
return self.delta_reg.match(fname)
return self.basefile_reg.match(fname)
class CfgEntrySet(Bcfg2.Server.Plugin.EntrySet):
def __init__(self, basename, path, props, entry_type, encoding):
Bcfg2.Server.Plugin.EntrySet.__init__(self, basename, path, props, entry_type, encoding)
self.specific = CfgMatcher(path.split('/')[-1])
def sort_by_specific(self, one, other):
return cmp(one.specific, other.specific)
def get_pertinent_entries(self, metadata):
'''return a list of all entries pertinent to a client => [base, delta1, delta2]'''
matching = [ent for ent in self.entries.values() if \
ent.specific.matches(metadata)]
matching.sort(self.sort_by_specific)
non_delta = [matching.index(m) for m in matching if not m.specific.delta]
if not non_delta:
raise Bcfg2.Server.Plugin.PluginExecutionError
base = min(non_delta)
used = matching[:base+1]
used.reverse()
return used
def bind_entry(self, entry, metadata):
self.bind_info_to_entry(entry, metadata)
used = self.get_pertinent_entries(metadata)
basefile = used.pop()
data = basefile.data
for delta in used:
data = process_delta(data, delta)
if entry.get('encoding') == 'base64':
entry.text = binascii.b2a_base64(data)
else:
entry.text = unicode(data, self.encoding)
if entry.text in ['', None]:
entry.set('empty', 'true')
def list_accept_choices(self, metadata):
'''return a list of candidate pull locations'''
used = self.get_pertinent_entries(metadata)
if len(used) > 1:
return []
return [used[0].specific]
def build_filename(self, specific):
bfname = self.path + '/' + self.path.split('/')[-1]
if specific.all:
return bfname
elif specific.group:
return "%s.G%d_%s" % (bfname, specific.group, specific.prio)
elif specific.hostname:
return "%s.H_%s" % (bfname, specific.hostname)
def write_update(self, specific, new_entry, log):
name = self.build_filename(specific)
open(name, 'w').write(new_entry['text'])
if log:
logger.info("Wrote file %s" % name)
badattr = [attr for attr in ['owner', 'group', 'perms'] if attr in new_entry]
if badattr:
if hasattr(self.entries[name.split('/')[-1]], 'infoxml'):
print "InfoXML support not yet implemented"
return
metadata_updates = {}
metadata_updates.update(self.metadata)
for attr in badattr:
metadata_updates[attr] = new_entry.get('attr')
infofile = open(self.path + '/:info', 'w')
for x in metadata_updates.iteritems():
infofile.write("%s: %s\n" % x)
infofile.close()
if log:
logger.info("Wrote file %s" % infofile.name)
class Cfg(Bcfg2.Server.Plugin.GroupSpool):
'''This generator in the configuration file repository for bcfg2'''
__name__ = 'Cfg'
__version__ = '$Id$'
__author__ = 'bcfg-dev@mcs.anl.gov'
use_props = False
es_cls = CfgEntrySet
es_child_cls = Bcfg2.Server.Plugin.SpecificData
def AcceptChoices(self, entry, metadata):
return self.entries[entry.get('name')].list_accept_choices(metadata)
def AcceptPullData(self, specific, new_entry, log):
return self.entries[new_entry.get('name')].write_update(specific, new_entry, log)
|
