def set_start_time(self):
if self.t() is not None:
return
d = os.path.abspath(os.path.join(self.root, "start-time"))
create(d)
start, t = time.time(), iso()
while time.time() - start <= 1.0:
try:
p = os.path.join(d, t)
os.symlink("../mesos/" + self.mesos_id, p)
self._writef("t", t)
self.timestamp = t
return
except OSError as e:
if e.errno != errno.EEXIST:
raise
time.sleep(random.uniform(0.005, 0.025))
t = iso()
def set_start_time(self):
if self.t() is not None:
return
d = os.path.abspath(os.path.join(self.root, "start-time"))
create(d)
start, t = time.time(), iso()
while time.time() - start <= 1.0:
try:
p = os.path.join(d, t)
os.symlink("../mesos/" + self.mesos_id, p)
self._writef("t", t)
self.timestamp = t
return
except OSError as e:
if e.errno != errno.EEXIST:
raise
time.sleep(random.uniform(0.005, 0.025))
t = iso()
def lock(self, name, flags, seconds=60):
fmt_time = "indefinite" if seconds is None else "%ds" % seconds
fmt_flags = deimos.flock.format_lock_flags(flags)
flags, seconds = deimos.flock.nb_seconds(flags, seconds)
log.info("request // %s %s (%s)", name, fmt_flags, fmt_time)
p = self.resolve(os.path.join("lock", name), mkdir=True)
lk = deimos.flock.LK(p, flags, seconds)
try:
lk.lock()
except deimos.flock.Err:
log.error("failure // %s %s (%s)", name, fmt_flags, fmt_time)
raise
if (flags & LOCK_EX) != 0:
lk.handle.write(iso() + "\n")
log.info("success // %s %s (%s)", name, fmt_flags, fmt_time)
return lk
def lock(self, name, flags, seconds=60):
fmt_time = "indefinite" if seconds is None else "%ds" % seconds
fmt_flags = deimos.flock.format_lock_flags(flags)
flags, seconds = deimos.flock.nb_seconds(flags, seconds)
log.info("request // %s %s (%s)", name, fmt_flags, fmt_time)
p = self.resolve(os.path.join("lock", name), mkdir=True)
lk = deimos.flock.LK(p, flags, seconds)
try:
lk.lock()
except deimos.flock.Err:
log.error("failure // %s %s (%s)", name, fmt_flags, fmt_time)
raise
if (flags & LOCK_EX) != 0:
lk.handle.write(iso() + "\n")
log.info("success // %s %s (%s)", name, fmt_flags, fmt_time)
return lk
def dirs(self, before=time.time(), exited=True):
"""
Provider a generator of container state directories.
If exited is None, all are returned. If it is False, unexited
containers are returned. If it is True, only exited containers are
returned.
"""
timestamp = iso(before)
root = os.path.join(self.root, "start-time")
os.chdir(root)
by_t = ( d for d in glob.iglob("????-??-??T*.*Z") if d < timestamp )
if exited is None:
def predicate(directory):
return True
else:
def predicate(directory):
exit = os.path.join(directory, "exit")
return os.path.exists(exit) is exited
return ( os.path.join(root, d) for d in by_t if predicate(d) )
def dirs(self, before=time.time(), exited=True):
"""
Provider a generator of container state directories.
If exited is None, all are returned. If it is False, unexited
containers are returned. If it is True, only exited containers are
returned.
"""
timestamp = iso(before)
root = os.path.join(self.root, "start-time")
os.chdir(root)
by_t = (d for d in glob.iglob("????-??-??T*.*Z") if d < timestamp)
if exited is None:
def predicate(directory):
return True
else:
def predicate(directory):
exit = os.path.join(directory, "exit")
return os.path.exists(exit) is exited
return (os.path.join(root, d) for d in by_t if predicate(d))