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
244
245
246
247
248
249
250
251
252
253
254
255
|
#!/usr/bin/env python
import os
import os.path
import sys
import time
import logging
import signal
import select
import shutil
import optparse
from optparse import OptionParser, SUPPRESS_HELP
from logging import Logger
from errno import EEXIST, ENOENT
from gconf import gconf
from configinterface import GConffile
import resource
class GLogger(Logger):
def makeRecord(self, name, level, *a):
rv = Logger.makeRecord(self, name, level, *a)
rv.nsecs = (rv.created - int(rv.created)) * 1000000
fr = sys._getframe(4)
callee = fr.f_locals.get('self')
if callee:
ctx = str(type(callee)).split("'")[1].split('.')[-1]
else:
ctx = '<top>'
if not hasattr(rv, 'funcName'):
rv.funcName = fr.f_code.co_name
rv.lvlnam = logging.getLevelName(level)[0]
rv.ctx = ctx
return rv
@classmethod
def setup(cls, **kw):
if kw.get('slave'):
sls = "(slave)"
else:
sls = ""
lprm = {'datefmt': "%Y-%m-%d %H:%M:%S",
'format': "[%(asctime)s.%(nsecs)d] %(lvlnam)s [%(module)s" + sls + ":%(lineno)s:%(funcName)s] %(ctx)s: %(message)s"}
lprm.update(kw)
lvl = kw.get('level', logging.INFO)
if isinstance(lvl, str):
lvl = logging.getLevelName(lvl)
lprm['level'] = lvl
logging.root = cls("root", lvl)
logging.setLoggerClass(cls)
logging.getLogger().handlers = []
logging.basicConfig(**lprm)
def startup(**kw):
def write_pid(fn):
fd = None
try:
fd = os.open(fn, os.O_CREAT|os.O_TRUNC|os.O_WRONLY|os.O_EXCL)
os.write(fd, str(os.getpid()) + '\n')
finally:
if fd:
os.close(fd)
if kw.get('go_daemon') == 'should':
x, y = os.pipe()
gconf.cpid = os.fork()
if gconf.cpid:
os.close(x)
sys.exit()
os.close(y)
# wait for parent to terminate
# so we can start up with
# no messing from the dirty
# ol' bustard
select.select((x,), (), ())
os.close(x)
if getattr(gconf, 'pid_file', None):
write_pid(gconf.pid_file + '.tmp')
os.rename(gconf.pid_file + '.tmp', gconf.pid_file)
os.setsid()
dn = os.open(os.devnull, os.O_RDWR)
for f in (sys.stdin, sys.stdout, sys.stderr):
os.dup2(dn, f.fileno())
elif getattr(gconf, 'pid_file', None):
try:
write_pid(gconf.pid_file)
except OSError:
gconf.pid_file = None
ex = sys.exc_info()[1]
if ex.errno == EEXIST:
sys.stderr.write("pidfile is taken, exiting.\n")
exit(2)
raise
lkw = {'level': gconf.log_level}
if kw.get('log_file'):
lkw['filename'] = kw['log_file']
GLogger.setup(slave=kw.get('slave'), **lkw)
def finalize(*a):
if getattr(gconf, 'pid_file', None):
if gconf.cpid:
while True:
f = open(gconf.pid_file)
pid = f.read()
f.close()
pid = int(pid.strip())
if pid == gconf.cpid:
break
if pid != os.getpid():
raise RuntimeError("corrupt pidfile")
if os.waitpid(gconf.cpid, os.WNOHANG)[0] == gconf.cpid:
break;
time.sleep(0.1)
else:
try:
os.unlink(gconf.pid_file)
except:
ex = sys.exc_info()[1]
if ex.errno == ENOENT:
pass
else:
raise
if gconf.ssh_ctl_dir and not gconf.cpid:
shutil.rmtree(gconf.ssh_ctl_dir)
def main():
# ??? "finally" clause does not take effect with SIGTERM...
# but this handler neither does
# signal.signal(signal.SIGTERM, finalize)
GLogger.setup()
try:
try:
main_i()
except:
exc = sys.exc_info()[0]
if exc != SystemExit:
logging.exception("FAIL: ")
sys.stderr.write("failed with %s.\n" % exc.__name__)
sys.exit(1)
finally:
finalize()
# force exit in non-main thread too
os._exit(1)
def main_i():
rconf = {'go_daemon': 'should'}
def store_abs(opt, optstr, val, parser):
setattr(parser.values, opt.dest, os.path.abspath(val))
def store_local(opt, optstr, val, parser):
rconf[opt.dest] = val
def store_local_curry(val):
return lambda o, oo, vx, p: store_local(o, oo, val, p)
op = OptionParser(usage="%prog [options...] <master> <slave>", version="%prog 0.0.1")
op.add_option('--gluster-command', metavar='CMD', default='glusterfs')
op.add_option('--gluster-log-file', metavar='LOGF', default=os.devnull, type=str, action='callback', callback=store_abs)
op.add_option('--gluster-log-level', metavar='LVL')
op.add_option('-p', '--pid-file', metavar='PIDF', type=str, action='callback', callback=store_abs)
op.add_option('-l', '--log-file', metavar='LOGF', type=str, action='callback', callback=store_abs)
op.add_option('-L', '--log-level', metavar='LVL')
op.add_option('-r', '--remote-gsyncd', metavar='CMD', default=os.path.abspath(sys.argv[0]))
op.add_option('-s', '--ssh-command', metavar='CMD', default='ssh')
op.add_option('--rsync-command', metavar='CMD', default='rsync')
op.add_option('--rsync-extra', metavar='ARGS', default='-sS', help=SUPPRESS_HELP)
op.add_option('--timeout', metavar='SEC', type=int, default=30)
op.add_option('--sync-jobs', metavar='N', type=int, default=3)
op.add_option('--turns', metavar='N', type=int, default=0, help=SUPPRESS_HELP)
op.add_option('-c', '--config-file', metavar='CONF', type=str, action='callback', callback=store_local)
# duh. need to specify dest or value will be mapped to None :S
op.add_option('--listen', dest='listen', help=SUPPRESS_HELP, action='callback', callback=store_local_curry(True))
op.add_option('-N', '--no-daemon', dest="go_daemon", action='callback', callback=store_local_curry('dont'))
op.add_option('--debug', dest="go_daemon", action='callback', callback=lambda *a: (store_local_curry('dont')(*a),
a[-1].values.__dict__.get('log_level') or \
a[-1].values.__dict__.update(log_level='DEBUG')))
op.add_option('--config-get', metavar='OPT', type=str, dest='config', action='callback', callback=store_local)
op.add_option('--config-get-all', dest='config', action='callback', callback=store_local_curry(True))
op.add_option('--config-set', metavar='OPT VAL', type=str, nargs=2, dest='config', action='callback', callback=store_local)
op.add_option('--config-del', metavar='OPT', type=str, dest='config', action='callback', callback=lambda o, oo, vx, p:
store_local(o, oo, (vx, False), p))
# precedence for sources of values: 1) commandline, 2) cfg file, 3) defaults
# -- for this to work out we need to tell apart defaults from explicitly set
# options... so churn out the defaults here and call the parser with virgin
# values container.
defaults = op.get_default_values()
opts, args = op.parse_args(values=optparse.Values())
if not (len(args) == 2 or (len(args) == 1 and rconf.get('listen')) or (len(args) <= 2 and rconf.get('config'))):
sys.stderr.write("error: incorrect number of arguments\n\n")
sys.stderr.write(op.get_usage() + "\n")
sys.exit(1)
local = remote = None
if args:
local = resource.parse_url(args[0])
if len(args) > 1:
remote = resource.parse_url(args[1])
if not local.can_connect_to(remote):
raise RuntimeError("%s cannot work with %s" % (local.path, remote and remote.path))
pa = ([], [])
canon = [False, True]
for x in (local, remote):
if x:
for i in range(2):
pa[i].append(x.get_url(canonical=canon[i]))
peers, canon_peers = pa
if not 'config_file' in rconf:
rconf['config_file'] = os.path.join(os.path.dirname(sys.argv[0]), "conf/gsyncd.conf")
gcnf = GConffile(rconf['config_file'], canon_peers)
confdata = rconf.get('config')
if confdata:
if isinstance(confdata, tuple):
if confdata[1]:
gcnf.set(*confdata)
else:
gcnf.delete(confdata[0])
else:
if confdata == True:
confdata = None
gcnf.get(confdata)
return
gconf.__dict__.update(defaults.__dict__)
gcnf.update_to(gconf.__dict__)
gconf.__dict__.update(opts.__dict__)
go_daemon = rconf['go_daemon']
if isinstance(remote, resource.SSH) and go_daemon == 'should':
go_daemon = 'postconn'
log_file = None
else:
log_file = gconf.log_file
startup(go_daemon=go_daemon, log_file=log_file, slave=(not remote))
logging.info("syncing: %s" % " -> ".join(peers))
if remote:
go_daemon = remote.connect_remote(go_daemon=go_daemon)
if go_daemon:
startup(go_daemon=go_daemon, log_file=gconf.log_file)
# complete remote connection in child
remote.connect_remote(go_daemon='done')
local.connect()
local.service_loop(*[r for r in [remote] if r])
logging.info("exiting.")
if __name__ == "__main__":
main()
|
