| 1 |
#!/usr/bin/python |
| 2 |
|
| 3 |
# a small program to test the possibilities to monitor the file system and |
| 4 |
# log changes on Windowsm Linux, and OSX |
| 5 |
# |
| 6 |
# Originally written by Christoph Gohle (2010) |
| 7 |
# Modified by Gene Horodecki for Windows |
| 8 |
# Further modified by Benjamin Pierce |
| 9 |
# should be distributed under GPL |
| 10 |
|
| 11 |
import sys |
| 12 |
import os |
| 13 |
import stat |
| 14 |
from optparse import OptionParser |
| 15 |
from time import time |
| 16 |
|
| 17 |
def mydebug(fmt, *args, **kwds): |
| 18 |
if not op.debug: |
| 19 |
return |
| 20 |
|
| 21 |
if args: |
| 22 |
fmt = fmt % args |
| 23 |
|
| 24 |
elif kwds: |
| 25 |
fmt = fmt % kwds |
| 26 |
|
| 27 |
print >>sys.stderr, fmt |
| 28 |
|
| 29 |
def mymesg(fmt, *args, **kwds): |
| 30 |
if not op.verbose: |
| 31 |
return |
| 32 |
|
| 33 |
if args: |
| 34 |
fmt = fmt % args |
| 35 |
|
| 36 |
elif kwds: |
| 37 |
fmt = fmt % kwds |
| 38 |
|
| 39 |
print >>sys.stdout, fmt |
| 40 |
|
| 41 |
def timer_callback(timer, streamRef): |
| 42 |
mydebug("CFAbsoluteTimeGetCurrent() => %.3f", CFAbsoluteTimeGetCurrent()) |
| 43 |
mydebug("FSEventStreamFlushAsync(streamRef = %s)", streamRef) |
| 44 |
FSEventStreamFlushAsync(streamRef) |
| 45 |
|
| 46 |
def update_changes(result): |
| 47 |
mydebug('Update_changes: absresult = %s',result) |
| 48 |
#print('absresult',result) |
| 49 |
result = [mangle_filename(path) for path in result] |
| 50 |
mydebug('Update_changes: mangled = %s',result) |
| 51 |
#print('magnled', result) |
| 52 |
result = [relpath(op.root,path) for path in result] |
| 53 |
#print('relative to root',result) |
| 54 |
mydebug('Update_changes: relative to root = %s',result) |
| 55 |
|
| 56 |
try: |
| 57 |
f = open(op.absoutfile,'a') |
| 58 |
for path in result: |
| 59 |
f.write(path+'\n') |
| 60 |
f.close() |
| 61 |
except IOError: |
| 62 |
mymesg('failed to open log file %s for writing',op.outfile) |
| 63 |
|
| 64 |
def update_changes_nomangle(result): |
| 65 |
# In win32 there are no symlinks, therefore file mangling |
| 66 |
# is not required |
| 67 |
|
| 68 |
mydebug('Changed paths: %s\n',result) |
| 69 |
try: |
| 70 |
f = open(op.absoutfile,'a') |
| 71 |
f.write(result+'\n') |
| 72 |
f.close() |
| 73 |
except IOError: |
| 74 |
mymesg('failed to open log file %s for writing',op.outfile) |
| 75 |
|
| 76 |
def mangle_filename(path): |
| 77 |
"""because the FSEvents system returns 'real' paths we have to figure out |
| 78 |
if they have been aliased by a symlink and a 'follow' directive in the unison |
| 79 |
configuration or from the command line. |
| 80 |
This is done here for path. The return value is the path name using symlinks |
| 81 |
""" |
| 82 |
try: |
| 83 |
op.symlinks |
| 84 |
except AttributeError: |
| 85 |
make_symlinks() |
| 86 |
#now lets do it |
| 87 |
result = path |
| 88 |
for key in op.symlinks: |
| 89 |
#print path, key |
| 90 |
if path.startswith(key): |
| 91 |
result = os.path.join(op.root,os.path.join(op.symlinks[key]+path[len(key):])) |
| 92 |
#print 'Match!', result |
| 93 |
|
| 94 |
return result |
| 95 |
|
| 96 |
def make_symlinks(): |
| 97 |
#lets create a dictionary of symlinks that are treated transparently here |
| 98 |
op.symlinks = {} |
| 99 |
fl = op.follow |
| 100 |
try: |
| 101 |
foll = [f.split(' ',1) for f in fl] |
| 102 |
except TypeError: |
| 103 |
foll = [] |
| 104 |
for k,v in foll: |
| 105 |
if not k=='Path': |
| 106 |
mymesg('We don\'t support anything but path specifications in follow directives. Especially not %s',k) |
| 107 |
else: |
| 108 |
p = v.strip('{}') |
| 109 |
if not p[-1]=='/': |
| 110 |
p+='/' |
| 111 |
op.symlinks[os.path.realpath(os.path.join(op.root,p))]=p |
| 112 |
mydebug('make_symlinks: symlinks to follow %s',op.symlinks) |
| 113 |
|
| 114 |
|
| 115 |
def relpath(root,path): |
| 116 |
"""returns the path relative to root (which should be absolute) |
| 117 |
if it is not a path below root or if root is not absolute it returns None |
| 118 |
""" |
| 119 |
|
| 120 |
if not os.path.isabs(root): |
| 121 |
return None |
| 122 |
|
| 123 |
abspath = os.path.abspath(path) |
| 124 |
mydebug('relpath: abspath(%s) = %s', path, abspath) |
| 125 |
|
| 126 |
#make sure the root and abspath both end with a '/' |
| 127 |
if not root[-1]=='/': |
| 128 |
root += '/' |
| 129 |
if not abspath[-1]=='/': |
| 130 |
abspath += '/' |
| 131 |
|
| 132 |
mydebug('relpath: root = %s', root) |
| 133 |
|
| 134 |
#print root, abspath |
| 135 |
if not abspath[:len(root)]==root: |
| 136 |
#print abspath[:len(root)], root |
| 137 |
return None |
| 138 |
mydebug('relpath: relpath = %s',abspath[len(root):]) |
| 139 |
return abspath[len(root):] |
| 140 |
|
| 141 |
def my_abspath(path): |
| 142 |
"""expand path including shell variables and homedir |
| 143 |
to the absolute path |
| 144 |
""" |
| 145 |
return os.path.abspath(os.path.expanduser(os.path.expandvars(path))) |
| 146 |
|
| 147 |
def update_follow(path): |
| 148 |
""" tries to find a follow directive that matches path |
| 149 |
and if path refers to a symbolic link the real path of the symbolic |
| 150 |
link is returned. """ |
| 151 |
try: |
| 152 |
op.symlinks |
| 153 |
except AttributeError: |
| 154 |
make_symlinks() |
| 155 |
rpath = relpath(op.root, path) |
| 156 |
mydebug('update_follow: rpath %s', rpath) |
| 157 |
result = None |
| 158 |
foll = None |
| 159 |
for k in op.symlinks: |
| 160 |
v = op.symlinks[k] |
| 161 |
if v==rpath: |
| 162 |
result = os.path.realpath(os.path.abspath(path)) |
| 163 |
foll = v |
| 164 |
mydebug('update_follow: link %s, real %s',v,result) |
| 165 |
break |
| 166 |
if result: |
| 167 |
op.symlinks[result] = foll |
| 168 |
|
| 169 |
return result, foll |
| 170 |
|
| 171 |
def conf_parser(conffilepath, delimiter = '=', dic = {}): |
| 172 |
"""parse the unison configuration file at conffilename and populate a dictionary |
| 173 |
with configuration options from there. If dic is a dictionary, these options are added to this |
| 174 |
one (can be used to recursively call this function for include statements).""" |
| 175 |
try: |
| 176 |
conffile = open(conffilepath,'r') |
| 177 |
except IOError: |
| 178 |
mydebug('could not open configuration file at %s',conffilepath) |
| 179 |
return None |
| 180 |
|
| 181 |
res = dic |
| 182 |
|
| 183 |
for line in conffile: |
| 184 |
line = line.strip() |
| 185 |
if len(line)<1 or line[0]=='#': |
| 186 |
continue |
| 187 |
elif line.startswith('include'): |
| 188 |
dn = os.path.dirname(conffilepath) |
| 189 |
fn = line.split()[1].strip() |
| 190 |
conf_parser(os.path.join(dn,fn), dic = res) |
| 191 |
else: |
| 192 |
k,v=[s.strip() for s in line.split('=',1)] |
| 193 |
if res.has_key(k): |
| 194 |
res[k].append(v) |
| 195 |
else: |
| 196 |
res[k]=[v] |
| 197 |
return res |
| 198 |
|
| 199 |
################################################ |
| 200 |
# Linux specific code here |
| 201 |
################################################ |
| 202 |
if sys.platform.startswith('linux'): |
| 203 |
import pyinotify |
| 204 |
|
| 205 |
class HandleEvents(pyinotify.ProcessEvent): |
| 206 |
wm = None |
| 207 |
|
| 208 |
#def process_IN_CREATE(self, event): |
| 209 |
# print "Creating:", event.pathname |
| 210 |
|
| 211 |
#def process_IN_DELETE(self, event): |
| 212 |
# print "Removing:", event.pathname |
| 213 |
|
| 214 |
#def process_IN_MODIFY(self, event): |
| 215 |
# print "Modifying:", event.pathname |
| 216 |
|
| 217 |
# def process_IN_MOVED_TO(self, event): |
| 218 |
# print "Moved to:", event.pathname |
| 219 |
|
| 220 |
# def process_IN_MOVED_FROM(self, event): |
| 221 |
# print "Moved from:", event.pathname |
| 222 |
|
| 223 |
# def process_IN_ATTRIB(self, event): |
| 224 |
# print "attributes:", event.pathname |
| 225 |
|
| 226 |
def process_default(self, event): |
| 227 |
mydebug('process_default: event %s', event) |
| 228 |
# code for adding dirs is obsolete since there is the auto_add option |
| 229 |
# if event.dir: |
| 230 |
# if event.mask&pyinotify.IN_CREATE: |
| 231 |
# print 'create:', event.pathname , self.add_watch(event.pathname,rec=True) |
| 232 |
# elif event.mask&pyinotify.IN_DELETE: |
| 233 |
# print 'remove', event.pathname, self.remove_watch(event.pathname) |
| 234 |
# pass |
| 235 |
# elif event.mask&pyinotify.IN_MOVED_FROM: |
| 236 |
# print 'move from', event.pathname, self.remove_watch(event.pathname, rec=True) |
| 237 |
# pass |
| 238 |
# elif event.mask&pyinotify.IN_MOVED_TO: |
| 239 |
# print 'move to', event.pathname, self.add_watch(event.pathname,rec=True) |
| 240 |
# else: |
| 241 |
# pass |
| 242 |
#handle creation of links that should be followed |
| 243 |
if os.path.islink(event.pathname): |
| 244 |
#special handling for links |
| 245 |
mydebug('process_default: link %s created/changed. Checking for follows', event.pathname) |
| 246 |
p, l = update_follow(event.pathname) |
| 247 |
if p: |
| 248 |
self.add_watch(p,rec=True,auto_add=True) |
| 249 |
mydebug('process_default: follow link %s to %s',l,p) |
| 250 |
#TODO: should handle deletion of links that are followed (delete the respective watches) |
| 251 |
update_changes([event.pathname]) |
| 252 |
|
| 253 |
def remove_watch(self, pathname, **kwargs): |
| 254 |
if self.watches.has_key(pathname): |
| 255 |
return self.wm.rm_watch(self.watches.pop(pathname),**kwargs) |
| 256 |
return None |
| 257 |
|
| 258 |
def add_watch(self, pathname, **kwargs): |
| 259 |
neww = self.wm.add_watch(pathname, self.mask, **kwargs) |
| 260 |
self.watches.update(neww) |
| 261 |
return neww |
| 262 |
|
| 263 |
def init_watches(self, abspaths, follows): |
| 264 |
self.watches = {} |
| 265 |
for abspath in abspaths: |
| 266 |
self.watches.update(self.wm.add_watch(abspath,self.mask,rec=True,auto_add=True)) |
| 267 |
#we have to add watches for follow statements since pyinotify does |
| 268 |
#not do recursion across symlinks |
| 269 |
make_symlinks() |
| 270 |
for link in op.symlinks: |
| 271 |
mydebug('following symbolic link %s',link) |
| 272 |
if not self.watches.has_key(link): |
| 273 |
self.watches.update(self.wm.add_watch(link,self.mask,rec=True,auto_add=True)) |
| 274 |
|
| 275 |
mydebug('init_watches: added paths %s\n based on paths %s\n and follows %s',self.watches,op.abspaths, op.follow) |
| 276 |
|
| 277 |
|
| 278 |
def linuxwatcher(): |
| 279 |
p = HandleEvents() |
| 280 |
wm = pyinotify.WatchManager() # Watch Manager |
| 281 |
p.wm = wm |
| 282 |
p.mask = pyinotify.IN_CREATE | pyinotify.IN_DELETE | pyinotify.IN_MODIFY | pyinotify.IN_ATTRIB | pyinotify.IN_MOVED_TO | pyinotify.IN_MOVED_FROM # watched events |
| 283 |
|
| 284 |
notifier = pyinotify.Notifier(wm, p) |
| 285 |
p.init_watches(op.abspaths, op.follow) |
| 286 |
notifier.loop() |
| 287 |
|
| 288 |
|
| 289 |
################################################# |
| 290 |
# END Linux specific code |
| 291 |
################################################# |
| 292 |
|
| 293 |
################################################# |
| 294 |
# MacOsX specific code |
| 295 |
################################################# |
| 296 |
if sys.platform == 'darwin': |
| 297 |
from FSEvents import * |
| 298 |
import objc |
| 299 |
|
| 300 |
def filelevel_approx(path): |
| 301 |
"""in order to avoid scanning the entire directory including sub |
| 302 |
directories by unison, we have to say which files have changed. Because |
| 303 |
this is a stupid program it only checks modification times within the |
| 304 |
update interval. in case there are no files modified in this interval, |
| 305 |
the entire directory is listed. |
| 306 |
A deleted file can not be found like this. Therefore also deletes will |
| 307 |
trigger a rescan of the directory (including subdirs) |
| 308 |
|
| 309 |
The impact of rescans could be limited if one could make |
| 310 |
unison work nonrecursively. |
| 311 |
""" |
| 312 |
result = [] |
| 313 |
#make a list of all files in question (all files in path w/o dirs) |
| 314 |
try: |
| 315 |
names = os.listdir(path) |
| 316 |
except os.error, msg: |
| 317 |
#path does not exist (anymore?). Add it to the results |
| 318 |
mydebug("adding nonexisting path %s for sync",path) |
| 319 |
result.append(path) |
| 320 |
names = None |
| 321 |
|
| 322 |
if names: |
| 323 |
for nm in names: |
| 324 |
full_path = os.path.join(path,nm) |
| 325 |
st = os.lstat(full_path) |
| 326 |
#see if the dir it was modified recently |
| 327 |
if st.st_mtime>time()-float(op.latency): |
| 328 |
result.append(full_path) |
| 329 |
|
| 330 |
if result == []: |
| 331 |
result.append(path) |
| 332 |
|
| 333 |
return result |
| 334 |
|
| 335 |
|
| 336 |
def fsevents_callback(streamRef, clientInfo, numEvents, eventPaths, eventMasks, eventIDs): |
| 337 |
mydebug("fsevents_callback(streamRef = %s, clientInfo = %s, numEvents = %s)", streamRef, clientInfo, numEvents) |
| 338 |
mydebug("fsevents_callback: FSEventStreamGetLatestEventId(streamRef) => %s", FSEventStreamGetLatestEventId(streamRef)) |
| 339 |
mydebug("fsevents_callback: eventpaths = %s",eventPaths) |
| 340 |
|
| 341 |
full_path = clientInfo |
| 342 |
|
| 343 |
result = [] |
| 344 |
for i in range(numEvents): |
| 345 |
path = eventPaths[i] |
| 346 |
if path[-1] == '/': |
| 347 |
path = path[:-1] |
| 348 |
|
| 349 |
if eventMasks[i] & kFSEventStreamEventFlagMustScanSubDirs: |
| 350 |
recursive = True |
| 351 |
|
| 352 |
elif eventMasks[i] & kFSEventStreamEventFlagUserDropped: |
| 353 |
mymesg("BAD NEWS! We dropped events.") |
| 354 |
mymesg("Forcing a full rescan.") |
| 355 |
recursive = 1 |
| 356 |
path = full_path |
| 357 |
|
| 358 |
elif eventMasks[i] & kFSEventStreamEventFlagKernelDropped: |
| 359 |
mymesg("REALLY BAD NEWS! The kernel dropped events.") |
| 360 |
mymesg("Forcing a full rescan.") |
| 361 |
recursive = 1 |
| 362 |
path = full_path |
| 363 |
|
| 364 |
else: |
| 365 |
recursive = False |
| 366 |
|
| 367 |
#now we should know what to do: build a file directory list |
| 368 |
#I assume here, that unison takes a flag for recursive scans |
| 369 |
if recursive: |
| 370 |
#we have to check all subdirectories |
| 371 |
if isinstance(path,list): |
| 372 |
#we have to check all base paths |
| 373 |
allpathsrecursive = [p + '\tr'] |
| 374 |
result.extend(path) |
| 375 |
else: |
| 376 |
result.append(path+'\tr') |
| 377 |
else: |
| 378 |
#just add the path |
| 379 |
#result.append(path) |
| 380 |
#try to find out what has changed |
| 381 |
result.extend(filelevel_approx(path)) |
| 382 |
|
| 383 |
mydebug('Dirs sent: %s',eventPaths) |
| 384 |
#TODO: handle creation/deletion of links that should be followed |
| 385 |
update_changes(result) |
| 386 |
|
| 387 |
try: |
| 388 |
f = open(op.absstatus,'w') |
| 389 |
f.write('last_item = %d'%eventIDs[-1]) |
| 390 |
f.close() |
| 391 |
except IOError: |
| 392 |
mymesg('failed to open status file %s', op.absstatus) |
| 393 |
|
| 394 |
def my_FSEventStreamCreate(paths): |
| 395 |
mydebug('my_FSEventStreamCreate: selected paths are: %s',paths) |
| 396 |
|
| 397 |
if op.sinceWhen == 'now': |
| 398 |
op.sinceWhen = kFSEventStreamEventIdSinceNow |
| 399 |
|
| 400 |
try: |
| 401 |
op.symlinks |
| 402 |
except AttributeError: |
| 403 |
make_symlinks() |
| 404 |
|
| 405 |
for sl in op.symlinks: |
| 406 |
#check if that path is already there |
| 407 |
found=False |
| 408 |
ln = op.symlinks[sl] |
| 409 |
for path in paths: |
| 410 |
if relpath(op.root,path)==ln: |
| 411 |
found = True |
| 412 |
break |
| 413 |
if not found: |
| 414 |
mydebug('my_FSEventStreamCreate: watch followed link %s',ln) |
| 415 |
paths.append(os.path.join(op.root,ln)) |
| 416 |
|
| 417 |
streamRef = FSEventStreamCreate(kCFAllocatorDefault, |
| 418 |
fsevents_callback, |
| 419 |
paths, #will this pass properly through? yes it does. |
| 420 |
paths, |
| 421 |
int(op.sinceWhen), |
| 422 |
float(op.latency), |
| 423 |
int(op.flags)) |
| 424 |
if streamRef is None: |
| 425 |
mymesg("ERROR: FSEVentStreamCreate() => NULL") |
| 426 |
return None |
| 427 |
|
| 428 |
if op.verbose: |
| 429 |
FSEventStreamShow(streamRef) |
| 430 |
|
| 431 |
#print ('my_FSE', streamRef) |
| 432 |
|
| 433 |
return streamRef |
| 434 |
|
| 435 |
def macosxwatcher(): |
| 436 |
#since when? if it is 'now' try to read state |
| 437 |
if op.sinceWhen == 'now': |
| 438 |
di = conf_parser(op.absstatus) |
| 439 |
if di and di.has_key('last_item'): |
| 440 |
#print di['last_item'][-1] |
| 441 |
op.sinceWhen = di['last_item'][-1] |
| 442 |
#print op.sinceWhen |
| 443 |
|
| 444 |
streamRef = my_FSEventStreamCreate(op.abspaths) |
| 445 |
#print streamRef |
| 446 |
if streamRef is None: |
| 447 |
print('failed to get a Stream') |
| 448 |
exit(1) |
| 449 |
|
| 450 |
FSEventStreamScheduleWithRunLoop(streamRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode) |
| 451 |
|
| 452 |
startedOK = FSEventStreamStart(streamRef) |
| 453 |
if not startedOK: |
| 454 |
print("failed to start the FSEventStream") |
| 455 |
exit(1) |
| 456 |
|
| 457 |
if op.flush_seconds >= 0: |
| 458 |
mydebug("CFAbsoluteTimeGetCurrent() => %.3f", CFAbsoluteTimeGetCurrent()) |
| 459 |
|
| 460 |
timer = CFRunLoopTimerCreate(None, |
| 461 |
CFAbsoluteTimeGetCurrent() + float(op.flush_seconds), |
| 462 |
float(op.flush_seconds), |
| 463 |
0, 0, timer_callback, streamRef) |
| 464 |
CFRunLoopAddTimer(CFRunLoopGetCurrent(), timer, kCFRunLoopDefaultMode) |
| 465 |
|
| 466 |
try: |
| 467 |
CFRunLoopRun() |
| 468 |
except KeyboardInterrupt: |
| 469 |
mydebug('stop called via Keyboard, cleaning up.') |
| 470 |
#Stop / Invalidate / Release |
| 471 |
FSEventStreamStop(streamRef) |
| 472 |
FSEventStreamInvalidate(streamRef) |
| 473 |
FSEventStreamRelease(streamRef) |
| 474 |
mydebug('FSEventStream closed') |
| 475 |
|
| 476 |
################################################# |
| 477 |
# END MacOsX specific code |
| 478 |
################################################# |
| 479 |
|
| 480 |
################################################# |
| 481 |
# Windows specific code |
| 482 |
################################################# |
| 483 |
if sys.platform == 'win32': |
| 484 |
import win32file |
| 485 |
import win32con |
| 486 |
import threading |
| 487 |
|
| 488 |
FILE_LIST_DIRECTORY = 0x0001 |
| 489 |
|
| 490 |
def win32watcherThread(abspath,file_lock): |
| 491 |
dirHandle = win32file.CreateFile ( |
| 492 |
abspath, |
| 493 |
FILE_LIST_DIRECTORY, |
| 494 |
win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE, |
| 495 |
None, |
| 496 |
win32con.OPEN_EXISTING, |
| 497 |
win32con.FILE_FLAG_BACKUP_SEMANTICS, |
| 498 |
None |
| 499 |
) |
| 500 |
while 1: |
| 501 |
results = win32file.ReadDirectoryChangesW ( |
| 502 |
dirHandle, |
| 503 |
1024, |
| 504 |
True, |
| 505 |
win32con.FILE_NOTIFY_CHANGE_FILE_NAME | |
| 506 |
win32con.FILE_NOTIFY_CHANGE_DIR_NAME | |
| 507 |
win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES | |
| 508 |
win32con.FILE_NOTIFY_CHANGE_SIZE | |
| 509 |
win32con.FILE_NOTIFY_CHANGE_LAST_WRITE | |
| 510 |
win32con.FILE_NOTIFY_CHANGE_SECURITY, |
| 511 |
None, |
| 512 |
None |
| 513 |
) |
| 514 |
for action, file in results: |
| 515 |
full_filename = os.path.join (abspath, file) |
| 516 |
# This will return 'dir updated' for every file update within dir, but |
| 517 |
# we don't want to send unison on a full dir sync in this situation. |
| 518 |
if not (os.path.isdir(full_filename) and action == 3): |
| 519 |
file_lock.acquire() |
| 520 |
update_changes_nomangle(full_filename) |
| 521 |
file_lock.release() |
| 522 |
|
| 523 |
def win32watcher(): |
| 524 |
file_lock = threading.Lock() |
| 525 |
threads = [ threading.Thread(target=win32watcherThread,args=(abspath,file_lock,)) for abspath in op.abspaths ] |
| 526 |
for thread in threads: |
| 527 |
thread.setDaemon(True) |
| 528 |
thread.start() |
| 529 |
|
| 530 |
try: |
| 531 |
while 1: |
| 532 |
pass |
| 533 |
except KeyboardInterrupt: |
| 534 |
print "Cleaning up." |
| 535 |
|
| 536 |
################################################# |
| 537 |
# END Windows specific code |
| 538 |
################################################# |
| 539 |
|
| 540 |
if __name__=='__main__': |
| 541 |
global op |
| 542 |
|
| 543 |
usage = """usage: %prog [options] root [path] [path]... |
| 544 |
This program monitors file system changes on all given (relative to root) paths |
| 545 |
and dumps paths (relative to root) files to a file. When launched, this file is |
| 546 |
recreated. While running new events are added. This can be read by UNISON |
| 547 |
to trigger a sync on these files. If root is a valid unison profile, we attempt |
| 548 |
to read all the settings from there.""" |
| 549 |
|
| 550 |
parser = OptionParser(usage=usage) |
| 551 |
parser.add_option("-w", "--sinceWhen", dest="sinceWhen", |
| 552 |
help="""starting point for filesystem updates to be captured |
| 553 |
Defaults to 'now' in the first run |
| 554 |
or the last caputured change""",default = 'now', metavar="SINCEWHEN") |
| 555 |
parser.add_option("-l", "--latency", dest="latency", |
| 556 |
help="set notification LATENCY in seconds. default 5",default = 5, metavar="LATENCY") |
| 557 |
parser.add_option("-f", "--flags", dest="flags", |
| 558 |
help="(macosx) set flags (who knows what they mean. defaults to 0",default = 0, metavar="FLAGS") |
| 559 |
parser.add_option("-s", "--flushseconds", dest="flush_seconds", |
| 560 |
help="(macosx) TIME interval in second until flush is forced. values < 0 turn it off. ",default = 1, metavar="TIME") |
| 561 |
parser.add_option("-o", "--outfile", dest="outfile", |
| 562 |
help="location of the output file. Defaults to UPATH/changes",default = 'changes', metavar="PATH") |
| 563 |
parser.add_option("-t", "--statefile", dest="statefile", |
| 564 |
help="(macosx) location of the state file (absolute or relative to UPATH). Defaults to UPATH/state",default = 'state', metavar="PATH") |
| 565 |
parser.add_option("-u", "--unisonconfig", dest="uconfdir", |
| 566 |
help='path to the unison config directory. default ~/.unison', |
| 567 |
default = '~/.unison', metavar = 'UPATH') |
| 568 |
parser.add_option("-z", "--follow", dest="follow", |
| 569 |
help="define a FOLLOW directive. This is equivalent to the -follow option in unison \ |
| 570 |
(except that for now only 'Paths' are supported). This option can appear multiple times. \ |
| 571 |
if a unison configuration file is loaded, it takes precedence over this option", |
| 572 |
action='append',metavar = 'FOLLOW') |
| 573 |
parser.add_option("-q", "--quiet", |
| 574 |
action="store_false", dest="verbose", default=True, |
| 575 |
help="don't print status messages to stdout") |
| 576 |
|
| 577 |
parser.add_option("-d", "--debug", |
| 578 |
action="store_true", dest="debug", default=False, |
| 579 |
help="print debug messages to stderr") |
| 580 |
|
| 581 |
|
| 582 |
(op, args) = parser.parse_args() |
| 583 |
|
| 584 |
|
| 585 |
if len(args)<1: |
| 586 |
parser.print_usage() |
| 587 |
sys.exit() |
| 588 |
|
| 589 |
#other paths |
| 590 |
op.absuconfdir = my_abspath(op.uconfdir) |
| 591 |
op.absstatus = os.path.join(op.absuconfdir,op.statefile) |
| 592 |
op.absoutfile = os.path.join(op.absuconfdir,op.outfile) |
| 593 |
|
| 594 |
|
| 595 |
#figure out if the root argument is a valid configuration file name |
| 596 |
p = args[0] |
| 597 |
fn = '' |
| 598 |
if os.path.exists(p) and not os.path.isdir(p): |
| 599 |
fn = p |
| 600 |
elif os.path.exists(os.path.join(op.absuconfdir,p)): |
| 601 |
fn = os.path.join(op.absuconfdir,p) |
| 602 |
op.unison_conf = conf_parser(fn) |
| 603 |
|
| 604 |
#now check for the relevant information |
| 605 |
root = None |
| 606 |
paths = None |
| 607 |
if op.unison_conf and op.unison_conf.has_key('root'): |
| 608 |
#find the local root |
| 609 |
root = None |
| 610 |
paths = None |
| 611 |
for r in op.unison_conf['root']: |
| 612 |
if r[0]=='/': |
| 613 |
root = r |
| 614 |
if op.unison_conf.has_key('path'): |
| 615 |
paths = op.unison_conf['path'] |
| 616 |
if op.unison_conf and op.unison_conf.has_key('follow'): |
| 617 |
op.follow = op.unison_conf['follow'] |
| 618 |
else: |
| 619 |
#see if follows were defined |
| 620 |
try: |
| 621 |
op.follow |
| 622 |
except AttributeError: |
| 623 |
op.follow = [] |
| 624 |
|
| 625 |
if not root: |
| 626 |
#no root up to here. get it from args |
| 627 |
root = args[0] |
| 628 |
|
| 629 |
if not paths: |
| 630 |
paths = args[1:] |
| 631 |
|
| 632 |
#absolute paths |
| 633 |
op.root = my_abspath(root) |
| 634 |
op.abspaths = [os.path.join(root,path) for path in paths] |
| 635 |
if op.abspaths == []: |
| 636 |
#no paths specified -> make root the path to observe |
| 637 |
op.abspaths = [op.root] |
| 638 |
#print op.root |
| 639 |
#print op.abspaths |
| 640 |
|
| 641 |
mydebug('options: %s',op) |
| 642 |
mydebug('arguments: %s',args) |
| 643 |
|
| 644 |
#cleaning up the change file |
| 645 |
try: |
| 646 |
f=open(op.absoutfile,'w') |
| 647 |
f.close() |
| 648 |
except IOError: |
| 649 |
mymesg('failed to open output file. STOP.') |
| 650 |
exit(1) |
| 651 |
|
| 652 |
if sys.platform=='darwin': |
| 653 |
macosxwatcher() |
| 654 |
elif sys.platform.startswith('linux'): |
| 655 |
linuxwatcher() |
| 656 |
elif sys.platform.startswith('win32'): |
| 657 |
win32watcher() |
| 658 |
else: |
| 659 |
mymesg('unsupported platform %s',sys.platform) |
| 660 |
|
| 661 |
|
Parent Directory
| 
Revision Log