def remove_if_stale(self, cutoff):
'''
given number of seconds, see if file is older than this many seconds
and remove file if so. we do this by opening the file exclusively first,
stat on the open file handle, then remove path if it checks out.
return True on removal, False for anything else including errors.
'''
removed = False
try:
# we're not going to write anything but have to open for write
# in order to get LOCK_EX
fhandle = open(self.lockfile.get_path(), "a+")
# try to get the lock. if we can't then we give up
try:
fcntl.lockf(fhandle, fcntl.LOCK_EX | fcntl.LOCK_NB)
except Exception:
# fail to get lock or some other error
fhandle.close()
return removed
if self._is_stale(cutoff, fhandle.fileno()):
removed = self._unlock()
else:
# if the file did not exist, our open call would have created
# it, and then we would have an empty file. No one else would
# have written to it because we have the LOCK_EX here.
# See if that's the case and if so, clean up
filesize = os.fstat(fhandle.fileno()).st_size
if not filesize:
removed = self._unlock()
# lock removed now
fhandle.close()
return removed
except Exception:
pass
return False
def __init__(self, flavor_id=""):
import sys
self.initialized = False
basename = os.path.splitext(os.path.abspath(sys.argv[0]))[0].replace("/", "-").replace(":", "").replace("\\", "-") + '-%s' % flavor_id + '.lock'
# os.path.splitext(os.path.abspath(sys.modules['__main__'].__file__))[0].replace("/", "-").replace(":", "").replace("\\", "-") + '-%s' % flavor_id + '.lock'
self.lockfile = os.path.normpath(tempfile.gettempdir() + '/' + basename)
logger.debug("SingleInstance lockfile: " + self.lockfile)
if sys.platform == 'win32':
try:
# file already exists, we try to remove (in case previous execution was interrupted)
if os.path.exists(self.lockfile):
os.unlink(self.lockfile)
self.fd = os.open(self.lockfile, os.O_CREAT | os.O_EXCL | os.O_RDWR)
except OSError:
type, e, tb = sys.exc_info()
if e.errno == 13:
logger.error("Another instance is already running, quitting.")
sys.exit(-1)
print(e.errno)
raise
else: # non Windows
import fcntl
self.fp = open(self.lockfile, 'w')
try:
fcntl.lockf(self.fp, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
logger.warning("Another instance is already running, quitting.")
sys.exit(-1)
self.initialized = True
def aleradyrunning(self): try: fcntl.lockf(self.fp, fcntl.LOCK_EX | fcntl.LOCK_NB) except IOError: return True else: return False
def processFile(filename):
"""Process and upload a file.
Return True if the file has been processed as completely as it will ever be and can be deleted"""
with open(filename, 'r+') as f:
try:
# make sure we're alone on that file
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
return False
try:
result = json.load(f)
st = os.stat(filename)
result['timestamp'] = st.st_ctime
trimDict(result)
return sendException(result, filename)
except ValueError, ex:
print >> sys.stderr, "Could not read %s:" % filename
print >> sys.stderr, '\n"""'
f.seek(0)
print >> sys.stderr, f.read()
print >> sys.stderr, '"""\n'
print >> sys.stderr, str(ex)
return True # so this bogus file gets deleted
finally:
def pycbc_compile_function(code,arg_names,local_dict,global_dict,
module_dir,
compiler='',
verbose=1,
support_code=None,
headers=None,
customize=None,
type_converters=None,
auto_downcast=1,
**kw):
""" Dummy wrapper around scipy weave compile to implement file locking
"""
from scipy.weave.inline_tools import _compile_function
headers = [] if headers is None else headers
lockfile_dir = os.path.dirname(module_dir)
lockfile_name = os.path.join(lockfile_dir, 'code_lockfile')
print("attempting to aquire lock '%s' for compiling code" % lockfile_name)
if not os.path.exists(lockfile_dir):
os.makedirs(lockfile_dir)
lockfile = open(lockfile_name, 'w')
fcntl.lockf(lockfile, fcntl.LOCK_EX)
print ("we have aquired the lock")
func = _compile_function(code,arg_names, local_dict, global_dict,
module_dir, compiler, verbose,
support_code, headers, customize,
type_converters,
auto_downcast, **kw)
fcntl.lockf(lockfile, fcntl.LOCK_UN)
print ("the lock has been released")
return func
def close(self):
''' terminate the connection '''
cache_key = self._cache_key()
SSH_CONNECTION_CACHE.pop(cache_key, None)
SFTP_CONNECTION_CACHE.pop(cache_key, None)
if self.sftp is not None:
self.sftp.close()
if C.PARAMIKO_RECORD_HOST_KEYS and self._any_keys_added():
# add any new SSH host keys -- warning -- this could be slow
lockfile = self.keyfile.replace("known_hosts",".known_hosts.lock")
dirname = os.path.dirname(self.keyfile)
if not os.path.exists(dirname):
os.makedirs(dirname)
KEY_LOCK = open(lockfile, 'w')
fcntl.lockf(KEY_LOCK, fcntl.LOCK_EX)
try:
# just in case any were added recently
self.ssh.load_system_host_keys()
self.ssh._host_keys.update(self.ssh._system_host_keys)
self._save_ssh_host_keys(self.keyfile)
except:
# unable to save keys, including scenario when key was invalid
# and caught earlier
traceback.print_exc()
pass
fcntl.lockf(KEY_LOCK, fcntl.LOCK_UN)
self.ssh.close()
def __init__(self):
self.recent_files = []
self.tlist = []
self.item = None
fname = os.path.expanduser(GRAMPS_FILENAME)
if not os.path.exists(fname):
return # it's the first time gramps has ever been run
try:
with open(fname, "rb") as xml_file:
if USE_LOCK:
fcntl.lockf(xml_file, fcntl.LOCK_SH)
parser = ParserCreate()
parser.StartElementHandler = self.start_element
parser.EndElementHandler = self.end_element
parser.CharacterDataHandler = self.characters
parser.ParseFile(xml_file)
# all advisory locks on a file are released on close
except IOError as err:
logging.warning(
_("Unable to open list of recent DBs file {fname}: {error}"
).format(fname=fname, error=err))
except ExpatError as err:
logging.error(
_("Error parsing list of recent DBs from file {fname}: "
"{error}.\nThis might indicate a damage to your files.\n"
"If you're sure there is no problem with other files, "
"delete it, and restart Gramps."
).format(fname=fname, error=err))
def test_mxnet_local_data_local_script():
local_mode_lock_fd = open(LOCK_PATH, 'w')
local_mode_lock = local_mode_lock_fd.fileno()
script_path = os.path.join(DATA_DIR, 'mxnet_mnist', 'mnist.py')
data_path = os.path.join(DATA_DIR, 'mxnet_mnist')
mx = MXNet(entry_point=script_path, role='SageMakerRole',
train_instance_count=1, train_instance_type='local',
sagemaker_session=LocalNoS3Session())
train_input = 'file://' + os.path.join(data_path, 'train')
test_input = 'file://' + os.path.join(data_path, 'test')
mx.fit({'train': train_input, 'test': test_input})
endpoint_name = mx.latest_training_job.name
try:
# Since Local Mode uses the same port for serving, we need a lock in order
# to allow concurrent test execution. The serving test is really fast so it still
# makes sense to allow this behavior.
fcntl.lockf(local_mode_lock, fcntl.LOCK_EX)
predictor = mx.deploy(1, 'local', endpoint_name=endpoint_name)
data = numpy.zeros(shape=(1, 1, 28, 28))
predictor.predict(data)
finally:
mx.delete_endpoint()
time.sleep(5)
fcntl.lockf(local_mode_lock, fcntl.LOCK_UN)
def command(self):
"run command"
self.init()
if self.options.index_name is None:
print "\nProvide an index to update\n"
print self.parser.print_help()
sys.exit(2)
if self.options.index_name not in ['messages', 'archive']:
print "\nProvide a valid index to update\n"
print self.parser.print_help()
sys.exit(2)
if not os.path.exists('/usr/bin/indexer'):
print "\nSphinx indexer is not installed\n"
sys.exit(2)
try:
lockfile = os.path.join(self.conf['baruwa.locks.dir'],
'updatedelta.lock')
with open(lockfile, 'w+') as lock:
fcntl.lockf(lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
update_index(self.conf['sphinx.url'],
self.options.index_name,
self.options.index_has_rt)
except IOError:
print >> sys.stderr, "Another instance is running."
sys.exit(2)
finally:
Session.close()
def openlock(filename, operation, wait=True):
"""
Returns a file-like object that gets a fnctl() lock.
`operation` should be one of LOCK_SH or LOCK_EX for shared or
exclusive locks.
If `wait` is False, then openlock() will not block on trying to
acquire the lock.
"""
f = os.fdopen(os.open(filename, os.O_RDWR | os.O_CREAT, 0666), "r+")
if not wait:
operation |= LOCK_NB
try:
lockf(f.fileno(), operation)
except IOError as err:
if not wait and err.errno in (EACCES, EAGAIN):
from django.core.management.base import CommandError
raise CommandError("Could not acquire lock on '%s' held by %s." %
(filename, f.readline().strip()))
raise
print("%s:%d" % (socket.gethostname(), os.getpid()), file=f)
f.truncate()
f.flush()
return f
def test_local_mode_serving_from_s3_model(sagemaker_local_session, mxnet_model):
local_mode_lock_fd = open(LOCK_PATH, 'w')
local_mode_lock = local_mode_lock_fd.fileno()
model_data = mxnet_model.model_data
boto_session = sagemaker_local_session.boto_session
default_bucket = sagemaker_local_session.default_bucket()
uploaded_data = tar_and_upload_dir(boto_session, default_bucket,
'test_mxnet_local_mode', '', model_data)
s3_model = MXNetModel(model_data=uploaded_data.s3_prefix, role='SageMakerRole',
entry_point=mxnet_model.entry_point, image=mxnet_model.image,
sagemaker_session=sagemaker_local_session)
predictor = None
try:
# Since Local Mode uses the same port for serving, we need a lock in order
# to allow concurrent test execution. The serving test is really fast so it still
# makes sense to allow this behavior.
fcntl.lockf(local_mode_lock, fcntl.LOCK_EX)
predictor = s3_model.deploy(initial_instance_count=1, instance_type='local')
data = numpy.zeros(shape=(1, 1, 28, 28))
predictor.predict(data)
finally:
if predictor:
predictor.delete_endpoint()
time.sleep(5)
fcntl.lockf(local_mode_lock, fcntl.LOCK_UN)
def endpoint_logs(request):
"""Saves an endpoint server Apache logs."""
response, group, ip = endpoint_common(request)
if response is not None:
return response
# Take a lock on the file
while True:
logfile = file(os.path.join(CONFIG['config']['logdir'], "access-%s-%s.log" % (group, ip)), 'a')
try:
fcntl.lockf(logfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
time.sleep(1)
else:
break
# Write out the log lines
logfile.write(request.POST['data'])
logfile.flush()
# Unlock the file
fcntl.lockf(logfile, fcntl.LOCK_UN)
# Close the file
logfile.close()
# Write out that everything went okay
response = http.HttpResponse(content_type='text/plain')
response.write('OK\n')
return response
def open(self, serial):
'''
Opens a new warc file with filename prefix `self.prefix` and serial
number `self.serial` and assigns file handle to `self.f`.
'''
if not os.path.exists(self.directory):
self.logger.info(
"warc destination directory %s doesn't exist, creating it",
self.directory)
os.mkdir(self.directory)
self.finalname = self.filename(serial)
self.logger.trace('opening %s', self.finalname)
self.path = os.path.sep.join(
[self.directory, self.finalname + self.open_suffix])
self.f = open(self.path, 'wb')
# if no '.open' suffix is used for WARC, acquire an exclusive
# file lock.
if self.open_suffix == '':
try:
fcntl.lockf(self.f, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as exc:
self.logger.error(
'could not lock file %s (%s)', self.path, exc)
return self.f
def unlock(self):
if not self.owned:
raise Exception("can't unlock %r - we don't own it" % self.name)
self._open_lock()
fcntl.lockf(self.lockfile, fcntl.LOCK_UN, 0, 0)
if vars.DEBUG_LOCKS: debug("%s unlock\n", self.name)
self.owned = False
def completedLoad(self):
#
# we're done with kickstart file generation.
#
# update the lock file to reflect the fact that one more
# unit of kickstart file generation can now occur
#
fp = self.openLockFile()
#
# if lockfile doesn't exist or is unreadable return
#
if fp == None:
return 0
fcntl.lockf(fp, fcntl.LOCK_EX)
input = fp.readline()
siblings = int(input)
siblings = siblings + 1
fp.seek(0)
fp.write("%d\n" % siblings)
fp.flush()
fcntl.lockf(fp, fcntl.LOCK_UN)
fp.close()
return 1
def write(self, filename=None):
"""Write the list of recently used files to disk.
If the instance is already associated with a file, filename can be
omitted to save it there again.
"""
if not filename and not self.filename:
raise ParsingError('File not found', filename)
elif not filename:
filename = self.filename
f = open(filename, "w")
fcntl.lockf(f, fcntl.LOCK_EX)
f.write('<?xml version="1.0"?>\n')
f.write("<RecentFiles>\n")
for r in self.RecentFiles:
f.write(" <RecentItem>\n")
f.write(" <URI>%s</URI>\n" % xml.sax.saxutils.escape(r.URI))
f.write(" <Mime-Type>%s</Mime-Type>\n" % r.MimeType)
f.write(" <Timestamp>%s</Timestamp>\n" % r.Timestamp)
if r.Private == True:
f.write(" <Private/>\n")
if len(r.Groups) > 0:
f.write(" <Groups>\n")
for group in r.Groups:
f.write(" <Group>%s</Group>\n" % group)
f.write(" </Groups>\n")
f.write(" </RecentItem>\n")
f.write("</RecentFiles>\n")
fcntl.lockf(f, fcntl.LOCK_UN)
f.close()
def __init__(self, pid_path):
self._pid_path = pid_path
self._other_running = False
ensuredirs(self._pid_path)
self._lockfile = None
try:
self._lockfile = os.open(self._pid_path, os.O_CREAT | os.O_WRONLY)
except:
raise SoleError('Cannot open lockfile (path = %s)' % self._pid_path)
try:
fcntl.lockf(self._lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
self._other_running = True
try:
f = open(self._pid_path, 'r')
pid = f.read().strip()
f.close()
except:
pid = '?'
raise SoleError('Other instance is running (pid = %s)' % pid)
try:
os.ftruncate(self._lockfile, 0)
os.write(self._lockfile, '%i\n' % os.getpid())
os.fsync(self._lockfile)
except:
pass # the pid is only stored for user information, so this is allowed to fail
def perform_request_save_file(filename, filecontent):
""" Handles the save request for the given file name and file content
@param filename: relative path of the file to save
@type filename: str
@param filecontent: content to be written in the file
@type filecontent: str
@return: dict with key "status", possible codes are:
error_forbidden_path
error_file_not_writable
save_success
@rtype: dict
"""
response = {}
file_path = INFO_PREFIX + filename
if not file_in_info_space(file_path):
response["status"] = "error_forbidden_path"
return response
try:
file_desc = open(file_path, 'w')
# Lock the file while writing to avoid clashes among users
fcntl.lockf(file_desc.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
try:
file_desc.write(filecontent)
finally:
fcntl.lockf(file_desc.fileno(), fcntl.LOCK_UN)
response["status"] = "save_success"
except IOError:
response["status"] = "error_file_not_writable"
return response
def lock(fileobj):
"""Lock a file object 'safely'.
That means a failure to lock because the platform doesn't
support fcntl or filesystem locks is not considered a
failure. This call does block.
Returns whether or not the lock was successful, or
raises an exception in more extreme circumstances (full
lock table, invalid file).
"""
try:
import fcntl
except ImportError:
return False
else:
try:
fcntl.lockf(fileobj, fcntl.LOCK_EX)
except IOError:
# FIXME: There's possibly a lot of complicated
# logic that needs to go here in case the IOError
# is EACCES or EAGAIN.
return False
else:
return True
def new_func(*args, **kwargs):
"""Wrapper function."""
with open(LOCK_FILE, 'w') as fhdl:
fcntl.lockf(fhdl, fcntl.LOCK_EX)
result = func(*args, **kwargs)
fcntl.lockf(fhdl, fcntl.LOCK_UN)
return result
def get_lock(self):
try:
self._lock_fd = os.open(self._lock_path,
os.O_CREAT | os.O_WRONLY, 0644)
fcntl.lockf(self._lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except: return False
return True
def process(self):
(opts, args) = getopts()
chkopts(opts)
self.up_progress(10)
passwd = None
if opts.passwd_file is not None and os.path.exists(opts.passwd_file):
try:
fp = open(opts.passwd_file, "r")
try:
self.up_progress(10)
fcntl.lockf(fp.fileno(), fcntl.LOCK_SH)
try:
passwd = fp.readline().strip("\n")
finally:
fcntl.lockf(fp.fileno(), fcntl.LOCK_UN)
self.up_progress(10)
finally:
fp.close()
except Exception, e:
self.logger.error('Failed to read.- dom=%s passwd_file=%s' \
% (opts.name,opts.passwd_file))
print >>sys.stderr,_('Failed to read.- dom=%s passwd_file=%s') \
% (opts.name,opts.passwd_file)
raise e
os.remove(opts.passwd_file)
def run_job(self, job_hash):
"""
Executes the corresponding function defined in CRONJOBS
"""
job = self.__get_job_by_hash(job_hash)
job_name = job[1]
job_args = job[2] if len(job) > 2 and not isinstance(job[2], string_type) else []
job_kwargs = job[3] if len(job) > 3 else {}
lock_file_name = None
if self.settings.LOCK_JOBS:
lock_file = open(os.path.join(tempfile.gettempdir(), 'django_crontab_%s.lock' % job_hash), 'w')
lock_file_name = lock_file.name
try:
fcntl.lockf(lock_file, fcntl.LOCK_EX | fcntl.LOCK_NB)
except:
logger.warning('Tried to start cron job %s that is already running.', job)
return
module_path, function_name = job_name.rsplit('.', 1)
module = import_module(module_path)
func = getattr(module, function_name)
try:
func(*job_args, **job_kwargs)
except:
logger.exception('Failed to complete cronjob at %s', job)
if self.settings.LOCK_JOBS:
try:
os.remove(lock_file_name)
except:
logger.exception('Error deleting lockfile %s of job %s', lock_file_name, job)
def get_lock_session(self, id):
"""get_lock_session(id)
Tries to determine the session that holds the lock on id for information purposes, and return an informative string.
Returns None on failure
"""
self.safe_LockCheck()
self.global_lock_acquire()
try:
sessions = [s for s in os.listdir(self.sdir) if s.endswith(self.name + ".locks")]
for session in sessions:
try:
sf = os.path.join(self.sdir, session)
fd = -1
if not self.afs:
fd = os.open(sf, os.O_RDONLY)
fcntl.lockf(fd, fcntl.LOCK_SH) # ONLY NFS
sf_file = open(sf)
names = pickle.load(sf_file)
sf_file.close()
if not self.afs and fd > 0:
fcntl.lockf(fd, fcntl.LOCK_UN) # ONLY NFS
os.close(fd)
if id in names:
return self.session_to_info(session)
except Exception as err:
logger.debug("Get Lock Session Exception: %s" % str(err))
continue
finally:
self.global_lock_release()
def lock(file) :
# Lock with a simple call to lockf() - this blocks until the lock is aquired
try:
fcntl.lockf( file, fcntl.LOCK_EX )
except IOError, exc_value:
print "Problem when trying to lock {0}, IOError {1}".format(file, exc_value[0])
raise
def session_write(self):
""" Writes the locked set to the session file.
The global lock MUST be held for this function to work, although on NFS additional
locking is done
Raises RepositoryError if session file is inaccessible """
# logger.debug("Openining Session File: %s " % self.fn )
try:
# If this fails, we want to shutdown the repository (corruption
# possible)
fd = self.delayopen(self.fn)
if not self.afs:
fcntl.lockf(fd, fcntl.LOCK_EX)
self.delaywrite(fd, pickle.dumps(self.locked))
if not self.afs:
fcntl.lockf(fd, fcntl.LOCK_UN)
os.fsync(fd)
os.close(fd)
except OSError as x:
if x.errno != errno.ENOENT:
raise RepositoryError(self.repo, "Error on session file access '%s': %s" % (self.fn, x))
else:
# logger.debug( "File NOT found %s" %self.fn )
raise RepositoryError(
self.repo,
"SessionWrite: Own session file not found! Possibly deleted by another ganga session.\n\
Possible reasons could be that this computer has a very high load, or that the system clocks on computers running Ganga are not synchronized.\n\
On computers with very high load and on network filesystems, try to avoid running concurrent ganga sessions for long.\n '%s' : %s"
% (self.fn, x),
)
except IOError as x:
raise RepositoryError(self.repo, "Error on session file locking '%s': %s" % (self.fn, x))
def cnt_read(self):
""" Tries to read the counter file.
Raises ValueError (invalid contents)
Raises OSError (no access/does not exist)
Raises RepositoryError (fatal)
"""
try:
fd = os.open(self.cntfn, os.O_RDONLY)
try:
if not self.afs: # additional locking for NFS
fcntl.lockf(fd, fcntl.LOCK_SH)
# 100 bytes should be enough for any ID. Can raise ValueErrorr
return int(os.read(fd, 100).split("\n")[0])
finally:
if not self.afs: # additional locking for NFS
fcntl.lockf(fd, fcntl.LOCK_UN)
os.close(fd)
except OSError as x:
if x.errno != errno.ENOENT:
raise RepositoryError(self.repo, "OSError on count file '%s' read: %s" % (self.cntfn, x))
else:
# This can be a recoverable error, depending on where it occurs
raise
except IOError as x:
raise RepositoryError(self.repo, "Locking error on count file '%s' write: %s" % (self.cntfn, x))
def _yumCachePreYumHook(self):
try:
fcntl.lockf(self.yumCacheLock.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
self.state.start("Waiting for yumcache lock")
fcntl.lockf(self.yumCacheLock.fileno(), fcntl.LOCK_EX)
self.state.finish("Waiting for yumcache lock")
def session_read(self, fn):
""" Reads a session file and returns a set of IDs locked by that session.
The global lock MUST be held for this function to work, although on NFS additional
locking is done
Raises RepositoryError if severe access problems occur (corruption otherwise!) """
try:
# This can fail (thats OK, file deleted in the meantime)
fd = self.delay_session_open(fn)
os.lseek(fd, 0, 0)
try:
if not self.afs: # additional locking for NFS
fcntl.lockf(fd, fcntl.LOCK_SH)
try:
# 00)) # read up to 1 MB (that is more than enough...)
return pickle.loads(os.read(fd, 1048576))
except Exception as x:
logger.warning(
"corrupt or inaccessible session file '%s' - ignoring it (Exception %s %s)."
% (fn, x.__class__.__name__, str(x))
)
finally:
if not self.afs: # additional locking for NFS
fcntl.lockf(fd, fcntl.LOCK_UN)
os.close(fd)
except OSError as x:
if x.errno != errno.ENOENT:
raise RepositoryError(self.repo, "Error on session file access '%s': %s" % (fn, x))
return set()
def clean_ssl_keyring(keyring, session):
old = open(keyring, 'r+')
fcntl.lockf(old, fcntl.LOCK_EX)
new = open(keyring + '.tmp', 'w')
fcntl.lockf(new, fcntl.LOCK_EX)
for line in old:
if "-BEGIN CERTIFICATE-" in line:
der = b""
pem = line
elif "-END CERTIFICATE-" in line:
pem += line
fingerprint = sha1(der).hexdigest().upper()
builder = session.query(Builder).filter_by(ssl=fingerprint).first()
user = session.query(Person).filter_by(ssl=fingerprint).first()
if builder or user:
new.write(pem)
else:
der += b64decode(line.strip())
pem += line
new.close()
os.rename(keyring + '.tmp', keyring)
old.close()
def exec_command(self, cmd, tmp_path, sudo_user,sudoable=False, executable='/bin/sh'):
''' run a command on the remote host '''
ssh_cmd = self._password_cmd()
ssh_cmd += ["ssh", "-tt", "-q"] + self.common_args
if self.ipv6:
ssh_cmd += ['-6']
ssh_cmd += [self.host]
if not self.runner.sudo or not sudoable:
if executable:
ssh_cmd.append(executable + ' -c ' + pipes.quote(cmd))
else:
ssh_cmd.append(cmd)
else:
sudocmd, prompt = utils.make_sudo_cmd(sudo_user, executable, cmd)
ssh_cmd.append(sudocmd)
vvv("EXEC %s" % ssh_cmd, host=self.host)
not_in_host_file = self.not_in_host_file(self.host)
if C.HOST_KEY_CHECKING and not_in_host_file:
# lock around the initial SSH connectivity so the user prompt about whether to add
# the host to known hosts is not intermingled with multiprocess output.
fcntl.lockf(self.runner.process_lockfile, fcntl.LOCK_EX)
fcntl.lockf(self.runner.output_lockfile, fcntl.LOCK_EX)
try:
# Make sure stdin is a proper (pseudo) pty to avoid: tcgetattr errors
import pty
master, slave = pty.openpty()
p = subprocess.Popen(ssh_cmd, stdin=slave,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdin = os.fdopen(master, 'w', 0)
except:
p = subprocess.Popen(ssh_cmd, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdin = p.stdin
self._send_password()
if self.runner.sudo and sudoable and self.runner.sudo_pass:
fcntl.fcntl(p.stdout, fcntl.F_SETFL,
fcntl.fcntl(p.stdout, fcntl.F_GETFL) | os.O_NONBLOCK)
sudo_output = ''
while not sudo_output.endswith(prompt):
rfd, wfd, efd = select.select([p.stdout], [],
[p.stdout], self.runner.timeout)
if p.stdout in rfd:
chunk = p.stdout.read()
if not chunk:
raise errors.AnsibleError('ssh connection closed waiting for sudo password prompt')
sudo_output += chunk
else:
stdout = p.communicate()
raise errors.AnsibleError('ssh connection error waiting for sudo password prompt')
stdin.write(self.runner.sudo_pass + '\n')
fcntl.fcntl(p.stdout, fcntl.F_SETFL, fcntl.fcntl(p.stdout, fcntl.F_GETFL) & ~os.O_NONBLOCK)
# We can't use p.communicate here because the ControlMaster may have stdout open as well
stdout = ''
stderr = ''
while True:
rfd, wfd, efd = select.select([p.stdout, p.stderr], [], [p.stdout, p.stderr], 1)
# fail early if the sudo password is wrong
if self.runner.sudo and sudoable and self.runner.sudo_pass:
incorrect_password = gettext.dgettext(
"sudo", "Sorry, try again.")
if stdout.endswith("%s\r\n%s" % (incorrect_password, prompt)):
raise errors.AnsibleError('Incorrect sudo password')
if p.stdout in rfd:
dat = os.read(p.stdout.fileno(), 9000)
stdout += dat
if dat == '':
p.wait()
break
elif p.stderr in rfd:
dat = os.read(p.stderr.fileno(), 9000)
stderr += dat
if dat == '':
p.wait()
break
elif p.poll() is not None:
break
stdin.close() # close stdin after we read from stdout (see also issue #848)
if C.HOST_KEY_CHECKING and not_in_host_file:
# lock around the initial SSH connectivity so the user prompt about whether to add
# the host to known hosts is not intermingled with multiprocess output.
fcntl.lockf(self.runner.output_lockfile, fcntl.LOCK_UN)
fcntl.lockf(self.runner.process_lockfile, fcntl.LOCK_UN)
if p.returncode != 0 and stderr.find('Bad configuration option: ControlPersist') != -1:
raise errors.AnsibleError('using -c ssh on certain older ssh versions may not support ControlPersist, set ANSIBLE_SSH_ARGS="" (or ansible_ssh_args in the config file) before running again')
return (p.returncode, '', stdout, stderr)
def unlock(self, lock_file):
fcntl.lockf(lock_file, fcntl.LOCK_UN)
def lock(self, lock_file):
fcntl.lockf(lock_file, fcntl.LOCK_EX)
for raw_file in raw_files:
os.unlink(raw_file)
# slc files can be deleted if *.rdr exists
rdr_files = glob("%s/*.rdr" % ci_dir)
if len(rdr_files) > 0:
for slc_file in slc_files:
os.unlink(slc_file)
if __name__ == "__main__":
# lock so that only one instance can run
lock_file = "/tmp/janitor.lock"
f = open(lock_file, 'w')
f.write("%d\n" % os.getpid())
f.flush()
try: fcntl.lockf(f, fcntl.LOCK_EX|fcntl.LOCK_NB)
except IOError, e:
if e.errno == errno.EAGAIN:
sys.stderr.write("Janitor is already running.\n")
sys.exit(-1)
raise
# run cleanup
root_work_dir = "/data/work/jobs"
try: janitor(root_work_dir)
finally:
f.close()
os.unlink(lock_file)
def __del__(self):
if self.lock_f:
fcntl.lockf(self.lock_f, fcntl.LOCK_UN)
self.lock_f.close()
os.unlink('/tmp/scheduler.lock')
def main():
p = optparse.OptionParser()
p.add_option('-o',
'--stdout',
dest='stdout',
help="""Read stdout from FILE.""",
metavar='FILE')
p.add_option('-e',
'--stderr',
dest='stderr',
help="""Read stderr from FILE.""",
metavar='FILE')
p.add_option('-s',
'--status',
dest='status',
metavar='FILE',
help='Get process exit status from FILE. '
'Will block until a shared lock is acquired on FILE.')
p.add_option('-d',
'--delete',
dest='delete',
action='store_true',
help='Delete stdout, stderr, and status files when finished.')
options, args = p.parse_args()
if args:
sys.stderr.write('Unexpected arguments: {0}\n'.format(args))
return 1
missing = []
for option in ('stdout', 'stderr', 'status'):
if getattr(options, option) is None:
missing.append(option)
if missing:
p.print_usage()
msg = 'Missing required flag(s): {0}\n'.format(', '.join(
'--' + i for i in missing))
sys.stderr.write(msg)
return 1
with open(options.stdout, 'r') as stdout:
with open(options.stderr, 'r') as stderr:
with open(options.status, 'r') as status:
fcntl.lockf(status, fcntl.LOCK_SH)
return_code_str = status.read()
if return_code_str:
return_code = int(return_code_str)
else:
print >> sys.stderr, 'WARNING: wrapper script interrupted.'
return_code = 1
stderr_copier = threading.Thread(target=shutil.copyfileobj,
args=[stderr, sys.stderr],
name='stderr-copier')
stderr_copier.daemon = True
stderr_copier.start()
try:
shutil.copyfileobj(stdout, sys.stdout)
finally:
stderr_copier.join()
if options.delete:
for f in [options.stdout, options.stderr, options.status]:
os.unlink(f)
return return_code
def run(*args, **kwargs):
"""The rss2email command line interface
Arguments passed to this function are forwarded to the parser's
`.parse_args()` call without modification.
"""
parser = _argparse.ArgumentParser(prog='rss2email',
description=_PACKAGE_DOCSTRING)
parser.add_argument('-v',
'--version',
action='version',
version='%(prog)s {}'.format(__version__))
parser.add_argument(
'--full-version',
action=FullVersionAction,
nargs=0,
help='print the version information of all related packages and exit')
parser.add_argument('-c',
'--config',
metavar='PATH',
default=[],
action='append',
help='path to the configuration file')
parser.add_argument('-d',
'--data',
metavar='PATH',
help='path to the feed data file')
parser.add_argument('-V',
'--verbose',
default=0,
action='count',
help='increment verbosity')
subparsers = parser.add_subparsers(title='commands')
new_parser = subparsers.add_parser(
'new', help=_command.new.__doc__.splitlines()[0])
new_parser.set_defaults(func=_command.new)
new_parser.add_argument(
'email',
nargs='?',
help='default target email for the new feed database')
email_parser = subparsers.add_parser(
'email', help=_command.email.__doc__.splitlines()[0])
email_parser.set_defaults(func=_command.email)
email_parser.add_argument(
'email',
default='',
help='default target email for the email feed database')
add_parser = subparsers.add_parser(
'add', help=_command.add.__doc__.splitlines()[0])
add_parser.set_defaults(func=_command.add)
add_parser.add_argument('name', help='name of the new feed')
add_parser.add_argument('url', help='location of the new feed')
add_parser.add_argument('email',
nargs='?',
help='target email for the new feed')
add_parser.add_argument('--only-new',
action='store_true',
help="entries in the feed now will not be sent")
run_parser = subparsers.add_parser(
'run', help=_command.run.__doc__.splitlines()[0])
run_parser.set_defaults(func=_command.run)
run_parser.add_argument('-n',
'--no-send',
dest='send',
default=True,
action='store_const',
const=False,
help="fetch feeds, but don't send email")
run_parser.add_argument('--clean',
action='store_true',
help='clean old feed entries')
run_parser.add_argument(
'index',
nargs='*',
help='feeds to fetch (defaults to fetching all feeds)')
list_parser = subparsers.add_parser(
'list', help=_command.list.__doc__.splitlines()[0])
list_parser.set_defaults(func=_command.list)
pause_parser = subparsers.add_parser(
'pause', help=_command.pause.__doc__.splitlines()[0])
pause_parser.set_defaults(func=_command.pause)
pause_parser.add_argument(
'index',
nargs='*',
help='feeds to pause (defaults to pausing all feeds)')
unpause_parser = subparsers.add_parser(
'unpause', help=_command.unpause.__doc__.splitlines()[0])
unpause_parser.set_defaults(func=_command.unpause)
unpause_parser.add_argument(
'index',
nargs='*',
help='feeds to ununpause (defaults to unpausing all feeds)')
delete_parser = subparsers.add_parser(
'delete', help=_command.delete.__doc__.splitlines()[0])
delete_parser.set_defaults(func=_command.delete)
delete_parser.add_argument('index', nargs='+', help='feeds to delete')
reset_parser = subparsers.add_parser(
'reset', help=_command.reset.__doc__.splitlines()[0])
reset_parser.set_defaults(func=_command.reset)
reset_parser.add_argument(
'index',
nargs='*',
help='feeds to reset (defaults to resetting all feeds)')
opmlimport_parser = subparsers.add_parser(
'opmlimport', help=_command.opmlimport.__doc__.splitlines()[0])
opmlimport_parser.set_defaults(func=_command.opmlimport)
opmlimport_parser.add_argument(
'file',
metavar='PATH',
nargs='?',
help='path for imported OPML (defaults to stdin)')
opmlexport_parser = subparsers.add_parser(
'opmlexport', help=_command.opmlexport.__doc__.splitlines()[0])
opmlexport_parser.set_defaults(func=_command.opmlexport)
opmlexport_parser.add_argument(
'file',
metavar='PATH',
nargs='?',
help='path for exported OPML (defaults to stdout)')
args = parser.parse_args(*args, **kwargs)
if args.verbose:
_LOG.setLevel(max(_logging.DEBUG, _logging.ERROR - 10 * args.verbose))
# https://docs.python.org/3/library/logging.html#logrecord-attributes
formatter = _logging.Formatter('%(asctime)s [%(levelname)s] %(message)s')
for handler in _LOG.handlers: # type: _logging.Handler
handler.setFormatter(formatter)
if not getattr(args, 'func', None):
parser.error('too few arguments')
# Immediately lock so only one r2e instance runs at a time
if UNIX:
import fcntl as _fcntl
from pathlib import Path as _Path
dir = _os.environ.get("XDG_RUNTIME_DIR")
if dir is None:
dir = _os.path.join("/tmp", "rss2email-{}".format(_os.getuid()))
_Path(dir).mkdir(mode=0o700, parents=True, exist_ok=True)
lockfile_path = _os.path.join(dir, "rss2email.lock")
lockfile = open(lockfile_path, "w")
_fcntl.lockf(lockfile, _fcntl.LOCK_EX)
_LOG.debug("acquired lock file {}".format(lockfile_path))
else:
# TODO: What to do on Windows?
lockfile = None
try:
if not args.config:
args.config = None
feeds = _feeds.Feeds(datafile_path=args.data, configfiles=args.config)
if args.func != _command.new:
feeds.load()
if not args.verbose:
_LOG.setLevel(feeds.config['DEFAULT']['verbose'].upper())
args.func(feeds=feeds, args=args)
except _error.RSS2EmailError as e:
e.log()
if _logging.ERROR - 10 * args.verbose < _logging.DEBUG:
raise # don't mask the traceback
_sys.exit(1)
finally:
if feeds is not None:
feeds.close()
if lockfile is not None:
lockfile.close()
def __init__(self, server=None, palette='default',
keymap='default', debug=False, verbose=False,
disable_sync=False, disable_background_sync=False,
fetch_missing_refs=False,
path=config.DEFAULT_CONFIG_PATH):
self.server = server
self.config = config.Config(server, palette, keymap, path)
if debug:
level = logging.DEBUG
elif verbose:
level = logging.INFO
else:
level = logging.WARNING
logging.basicConfig(filename=self.config.log_file, filemode='w',
format='%(asctime)s %(message)s',
level=level)
# Python2.6 Logger.setLevel doesn't convert string name
# to integer code. Here, we set the requests logger level to
# be less verbose, since our logging output duplicates some
# requests logging content in places.
req_level_name = 'WARN'
req_logger = logging.getLogger('requests')
if sys.version_info < (2, 7):
level = logging.getLevelName(req_level_name)
req_logger.setLevel(level)
else:
req_logger.setLevel(req_level_name)
self.log = logging.getLogger('gertty.App')
self.log.debug("Starting")
self.lock_fd = open(self.config.lock_file, 'w')
try:
fcntl.lockf(self.lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
print("error: another instance of gertty is running for: %s" % self.config.server['name'])
sys.exit(1)
self.project_cache = ProjectCache()
self.ring = mywid.KillRing()
self.input_buffer = []
webbrowser.register('xdg-open', None, BackgroundBrowser("xdg-open"))
self.fetch_missing_refs = fetch_missing_refs
self.config.keymap.updateCommandMap()
self.search = search.SearchCompiler(self.config.username)
self.db = db.Database(self, self.config.dburi, self.search)
self.sync = sync.Sync(self, disable_background_sync)
self.status = StatusHeader(self)
self.header = urwid.AttrMap(self.status, 'header')
self.screens = urwid.MonitoredList()
self.breadcrumbs = BreadCrumbBar()
self.screens.set_modified_callback(
functools.partial(self.breadcrumbs._update, self.screens))
if self.config.breadcrumbs:
self.footer = urwid.AttrMap(self.breadcrumbs, 'footer')
else:
self.footer = None
screen = view_project_list.ProjectListView(self)
self.status.update(title=screen.title)
self.updateStatusQueries()
self.frame = urwid.Frame(body=screen, footer=self.footer)
self.loop = urwid.MainLoop(self.frame, palette=self.config.palette.getPalette(),
handle_mouse=self.config.handle_mouse,
unhandled_input=self.unhandledInput,
input_filter=self.inputFilter)
self.sync_pipe = self.loop.watch_pipe(self.refresh)
self.error_queue = queue.Queue()
self.error_pipe = self.loop.watch_pipe(self._errorPipeInput)
self.logged_warnings = set()
self.command_pipe = self.loop.watch_pipe(self._commandPipeInput)
self.command_queue = queue.Queue()
warnings.showwarning = self._showWarning
has_subscribed_projects = False
with self.db.getSession() as session:
if session.getProjects(subscribed=True):
has_subscribed_projects = True
if not has_subscribed_projects:
self.welcome()
self.loop.screen.tty_signal_keys(start='undefined', stop='undefined')
#self.loop.screen.set_terminal_properties(colors=88)
self.startSocketListener()
if not disable_sync:
self.sync_thread = threading.Thread(target=self.sync.run, args=(self.sync_pipe,))
self.sync_thread.daemon = True
self.sync_thread.start()
else:
self.sync_thread = None
self.sync.offline = True
self.status.update(offline=True)
def Unlock(self): """Release our pid file.""" fcntl.lockf(self._file, fcntl.LOCK_UN) self._locked = False
def _yumCachePostYumHook(self):
fcntl.lockf(self.yumCacheLock.fileno(), fcntl.LOCK_UN)
def __exit__(self, *exc_info):
fcntl.lockf(self.lockf, fcntl.LOCK_UN)
self.lockf.close()
class PidFile(object):
"""Interprocess locking via fcntl and a pid file.
We use fcntl to manage locks between processes, as the kernel will
release the lock when the process dies no matter what, so it works
quite well.
We store the pid in the file we use so that 3rd party programs,
primarily small shell scripts, can easily see who has (or had) the
lock via the stored pid. We don't clean the pid up on exit
because most programs will have to check if the program is still
running anyways.
We can forcibly take a lock by deleting the file and re-creating
it. When we do so, we check if the pid in the file is running and
send it a SIGTERM *if and only if* it has a commandline with
'nsscache' somewhere in the string.
We try to kill the process to avoid it completing after us and
overwriting any changes. We check for 'nsscache' to avoid killing
a re-used PID. We are not paranoid, we send the SIGTERM and
assume it dies.
WARNING: Use over NFS with *extreme* caution. fcntl locking can
be configured to work, but your mileage can and will vary.
"""
STATE_DIR = '/var/run'
PROC_DIR = '/proc'
PROG_NAME = 'nsscache'
def __init__(self, filename=None, pid=None):
"""Initialize the PidFile object."""
self._locked = False
self._file = None
self.filename = filename
self.pid = pid
# Setup logging.
self.log = logging.getLogger(self.__class__.__name__)
if self.pid is None:
self.pid = os.getpid()
# If no filename is given, default to the basename we were
# invoked with.
if self.filename is None:
basename = os.path.basename(sys.argv[0])
if not basename:
# We were invoked from a python interpreter with
# bad arguments, or otherwise loaded without sys.argv
# being set.
self.log.critical('Can not determine lock file name!')
raise TypeError('missing required argument: filename')
self.filename = '%s/%s' % (self.STATE_DIR, basename)
self.log.debug('using %s for lock file', self.filename)
def __del__(self):
"""Release our pid file on object destruction."""
if self.Locked():
self.Unlock()
def _Open(self, filename=None):
"""Create our file and store the file object."""
if filename is None:
filename = self.filename
# We want to create this file if it doesn't exist, but 'w'
# will truncate, so we use 'a+' and seek. We don't truncate
# the file because we haven't tested if it is locked by
# another program yet, this is done later by fcntl module.
self._file = open(filename, 'a+')
self._file.seek(0)
# Set permissions.
os.chmod(filename,
stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH)
def Lock(self, force=False):
"""Open our pid file and lock it.
Args:
force: optional flag to override the lock.
Returns:
True if successful
False otherwise
"""
if self._file is None:
# Open the file and trap permission denied.
try:
self._Open()
except IOError, e:
if e.errno == errno.EACCES:
self.log.warning('Permission denied opening lock file: %s',
self.filename)
return False
raise
# Try to get the lock.
return_val = False
try:
fcntl.lockf(self._file, fcntl.LOCK_EX | fcntl.LOCK_NB)
return_val = True
except IOError, e:
if e.errno in [errno.EACCES, errno.EAGAIN]:
# Catch the error raised when the file is locked.
if not force:
self.log.debug('%s already locked!', self.filename)
return False
else:
# Otherwise re-raise it.
raise
async def main():
"""
Main function of aucote project
Returns:
"""
print("%s, version: %s.%s.%s" % ((APP_NAME,) + VERSION))
# parse arguments
parser = argparse.ArgumentParser(description='Tests compliance of devices.')
parser.add_argument("--cfg", help="config file path")
parser.add_argument('cmd', help="aucote command", type=str, default='service',
choices=['scan', 'service'],
nargs='?')
parser.add_argument("--syncdb", action="store_true", help="Synchronize database")
args = parser.parse_args()
# read configuration
await cfg_load(args.cfg)
log.info("%s, version: %s.%s.%s", APP_NAME, *VERSION)
try:
lock = open(cfg['pid_file'], 'w')
fcntl.lockf(lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
log.error("There is another Aucote instance running already")
sys.exit(1)
exploit_filename = cfg['fixtures.exploits.filename']
try:
exploits = Exploits.read(file_name=exploit_filename)
except NmapUnsupported:
log.exception("Cofiguration seems to be invalid. Check ports and services or contact with collective-sense")
exit(1)
def get_kuduworker():
"""
Get kudu worker if enable, mock otherwise
Returns:
KuduQueue|MagicMock
"""
if cfg['kuduworker.enable']:
return KuduQueue(cfg['kuduworker.queue.address'])
return MagicMock() # used for local testing
with get_kuduworker() as kudu_queue:
aucote = Aucote(exploits=exploits, kudu_queue=kudu_queue, tools_config=EXECUTOR_CONFIG)
if args.syncdb:
log.info('Pushing %s exploits to the database', len(exploits))
aucote.run_syncdb()
if args.cmd == 'scan':
await aucote.run_scan(as_service=False)
IOLoop.current().stop()
elif args.cmd == 'service':
while True:
await aucote.run_scan()
cfg.reload(cfg['config_filename'])
finalTfile.replace('Playback', 'Playback_full'))
Tfile = dqmfile
for i in range(RETRIES):
md5Digest = md5(file(Tfile).read())
originStr = "md5:%s %d %s" % (md5Digest.hexdigest(),
os.stat(Tfile).st_size,
Tfile)
originTMPFile = "%s.origin" % finalTMPfile
originFile = open(originTMPFile, "w")
originFile.write(originStr)
originFile.close()
shutil.copy(Tfile, finalTMPfile)
version = 1
lFile = open("%s/lock" % TMPDROPBOX, "a")
lockf(lFile, LOCK_EX)
for vdir, vsubdir, vfiles in os.walk(DROPBOX):
if 'DQM_V0001_%s_R%09d.root' % (subsystem,
run) not in vfiles:
continue
version += 1
if not os.path.exists("%s/V%04d" % (DROPBOX, version)):
os.makedirs("%s/V%04d" % (DROPBOX, version))
finalfile = "%s/V%04d/DQM_V0001_%s_R%09d.root" % (
DROPBOX, version, subsystem, run)
originFileName = "%s.origin" % finalfile
if os.path.exists(finalTMPfile) and os.stat(
finalTMPfile).st_size == os.stat(
Tfile).st_size:
def unlock_path(lock):
if os.name != 'posix':
return None
fcntl.lockf(lock, fcntl.LOCK_UN)
lock.close()
User.update_data(user_json.id, user_json)
except tweepy.error.TweepError:
# API might return errors occasionally
print_exc()
time.sleep(30)
end_time = time.time()
print('')
print('[{}] updated={} time_elapsed={:.2f}'.format(
time.strftime('%c'), update_count, (end_time - start_time)))
if __name__ == '__main__':
# File lock, only run the script once at a time
f = open('user_lock', 'w')
try:
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
if e.errno == errno.EAGAIN:
sys.stderr.write(
'[{}] Script refresh_user_data already running.\n'.format(
time.strftime('%c')))
sys.exit(-1)
raise
# Create new flag tells the script if it should scan the tweet table for new users
create_new = True if 'create' in sys.argv else False
if 'update_followers' in sys.argv:
print('[{}] Start refresh_user_followers'.format(time.strftime('%c')))
refresh_user_followers()
else:
print('[{}] Start refresh_user_data'.format(time.strftime('%c')))
refresh_user_data(create_new)
def get_status(self, checkpoint_time=0):
"""
Monitor Status ---> Created Started Paused Stopped
----------------------------------------------------------------------
slave_node N/A VALUE VALUE N/A
status Created VALUE Paused Stopped
last_synced N/A VALUE VALUE VALUE
crawl_status N/A VALUE N/A N/A
entry N/A VALUE N/A N/A
data N/A VALUE N/A N/A
meta N/A VALUE N/A N/A
failures N/A VALUE VALUE VALUE
checkpoint_completed N/A VALUE VALUE VALUE
checkpoint_time N/A VALUE VALUE VALUE
checkpoint_completed_time N/A VALUE VALUE VALUE
"""
data = self.default_values
with open(self.filename) as f:
try:
data.update(json.load(f))
except ValueError:
pass
monitor_status = self.get_monitor_status()
# Verifying whether monitor process running and adjusting status
if monitor_status in ["Started", "Paused"]:
try:
with open(self.monitor_pid_file, "r+") as f:
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
monitor_status = "Stopped"
except (IOError, OSError) as e:
if e.errno in (EACCES, EAGAIN):
# cannot grab. so, monitor process still running..move on
pass
else:
raise
if monitor_status in ["Created", "Paused", "Stopped"]:
data["worker_status"] = monitor_status
# Checkpoint adjustments
if checkpoint_time == 0:
data["checkpoint_completed"] = DEFAULT_STATUS
data["checkpoint_time"] = DEFAULT_STATUS
data["checkpoint_completion_time"] = DEFAULT_STATUS
else:
if checkpoint_time != data["checkpoint_time"]:
if checkpoint_time <= data["last_synced"]:
data["checkpoint_completed"] = "Yes"
data["checkpoint_time"] = checkpoint_time
data["checkpoint_completion_time"] = data["last_synced"]
else:
data["checkpoint_completed"] = "No"
data["checkpoint_time"] = checkpoint_time
data["checkpoint_completion_time"] = DEFAULT_STATUS
if data["checkpoint_time"] not in [0, DEFAULT_STATUS]:
chkpt_time = data["checkpoint_time"]
data["checkpoint_time"] = human_time(chkpt_time)
data["checkpoint_time_utc"] = human_time_utc(chkpt_time)
if data["checkpoint_completion_time"] not in [0, DEFAULT_STATUS]:
chkpt_completion_time = data["checkpoint_completion_time"]
data["checkpoint_completion_time"] = human_time(
chkpt_completion_time)
data["checkpoint_completion_time_utc"] = human_time_utc(
chkpt_completion_time)
if data["last_synced"] == 0:
data["last_synced"] = DEFAULT_STATUS
data["last_synced_utc"] = DEFAULT_STATUS
else:
last_synced = data["last_synced"]
data["last_synced"] = human_time(last_synced)
data["last_synced_utc"] = human_time_utc(last_synced)
if data["worker_status"] != "Active":
data["last_synced"] = DEFAULT_STATUS
data["last_synced_utc"] = DEFAULT_STATUS
data["crawl_status"] = DEFAULT_STATUS
data["entry"] = DEFAULT_STATUS
data["data"] = DEFAULT_STATUS
data["meta"] = DEFAULT_STATUS
data["failures"] = DEFAULT_STATUS
data["checkpoint_completed"] = DEFAULT_STATUS
data["checkpoint_time"] = DEFAULT_STATUS
data["checkpoint_completed_time"] = DEFAULT_STATUS
data["checkpoint_time_utc"] = DEFAULT_STATUS
data["checkpoint_completion_time_utc"] = DEFAULT_STATUS
if data["worker_status"] not in ["Active", "Passive"]:
data["slave_node"] = DEFAULT_STATUS
if data.get("last_synced_utc", 0) == 0:
data["last_synced_utc"] = DEFAULT_STATUS
if data.get("checkpoint_completion_time_utc", 0) == 0:
data["checkpoint_completion_time_utc"] = DEFAULT_STATUS
if data.get("checkpoint_time_utc", 0) == 0:
data["checkpoint_time_utc"] = DEFAULT_STATUS
return data
try:
st = os.lstat(fn)
except OSError, e:
if e.errno == errno.ENOENT:
pass
else:
raise
else:
if not stat.S_ISREG(st.st_mode):
raise BX(_("destination not a file: %s" % fn))
fd = os.open(fn, os.O_RDWR | os.O_CREAT, 0666)
# log_error("fd=%r" %fd)
try:
if offset == 0 or (offset == -1 and size == len(contents)):
#truncate file
fcntl.lockf(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
try:
os.ftruncate(fd, 0)
# log_error("truncating fd %r to 0" %fd)
finally:
fcntl.lockf(fd, fcntl.LOCK_UN)
if offset == -1:
os.lseek(fd, 0, 2)
else:
os.lseek(fd, offset, 0)
#write contents
fcntl.lockf(fd, fcntl.LOCK_EX | fcntl.LOCK_NB, len(contents), 0, 2)
try:
os.write(fd, contents)
# log_error("wrote contents")
finally:
def unlock(self):
"""<method internal="yes">
</method>"""
fcntl.lockf(self.lock_file, fcntl.LOCK_UN)
def lock(self):
if self.fd:
return
self.fd = open(self.filename, 'w')
fcntl.lockf(self.fd, fcntl.LOCK_EX)
def unlock(self):
fcntl.lockf(self.lockfile, fcntl.LOCK_UN)
def close(self):
''' terminate the connection '''
cache_key = self._cache_key()
SSH_CONNECTION_CACHE.pop(cache_key, None)
SFTP_CONNECTION_CACHE.pop(cache_key, None)
if self.sftp is not None:
self.sftp.close()
if C.HOST_KEY_CHECKING and C.PARAMIKO_RECORD_HOST_KEYS and self._any_keys_added(
):
# add any new SSH host keys -- warning -- this could be slow
# (This doesn't acquire the connection lock because it needs
# to exclude only other known_hosts writers, not connections
# that are starting up.)
lockfile = self.keyfile.replace("known_hosts", ".known_hosts.lock")
dirname = os.path.dirname(self.keyfile)
makedirs_safe(dirname)
KEY_LOCK = open(lockfile, 'w')
fcntl.lockf(KEY_LOCK, fcntl.LOCK_EX)
try:
# just in case any were added recently
self.ssh.load_system_host_keys()
self.ssh._host_keys.update(self.ssh._system_host_keys)
# gather information about the current key file, so
# we can ensure the new file has the correct mode/owner
key_dir = os.path.dirname(self.keyfile)
if os.path.exists(self.keyfile):
key_stat = os.stat(self.keyfile)
mode = key_stat.st_mode
uid = key_stat.st_uid
gid = key_stat.st_gid
else:
mode = 33188
uid = os.getuid()
gid = os.getgid()
# Save the new keys to a temporary file and move it into place
# rather than rewriting the file. We set delete=False because
# the file will be moved into place rather than cleaned up.
tmp_keyfile = tempfile.NamedTemporaryFile(dir=key_dir,
delete=False)
os.chmod(tmp_keyfile.name, mode & 0o7777)
os.chown(tmp_keyfile.name, uid, gid)
self._save_ssh_host_keys(tmp_keyfile.name)
tmp_keyfile.close()
os.rename(tmp_keyfile.name, self.keyfile)
except:
# unable to save keys, including scenario when key was invalid
# and caught earlier
traceback.print_exc()
pass
fcntl.lockf(KEY_LOCK, fcntl.LOCK_UN)
self.ssh.close()
os.unlink(self.lockfile)
self.fd = os.open(self.lockfile,
os.O_CREAT | os.O_EXCL | os.O_RDWR)
except Exception, e:
Log.note(
"\n" +
"**********************************************************************\n"
+ "** Another instance is already running, quitting.\n" +
"**********************************************************************\n"
)
sys.exit(-1)
else: # non Windows
import fcntl
self.fp = open(self.lockfile, 'w')
try:
fcntl.lockf(self.fp, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
Log.note(
"\n" +
"**********************************************************************\n"
+ "** Another instance is already running, quitting.\n" +
"**********************************************************************\n"
)
sys.exit(-1)
self.initialized = True
def __exit__(self, type, value, traceback):
self.__del__()
def __del__(self):
import sys
def release():
# 1. 对于文件的 close() 操作会使文件锁失效；
# 2. 同理，进程结束后文件锁失效
# f.close()
fcntl.lockf(f, fcntl.LOCK_UN)
def acquire(self):
"""Lock the opened file"""
fcntl.lockf(self.file,
fcntl.LOCK_EX | (fcntl.LOCK_NB if self.nonblock else 0))
def trylock(self):
fcntl.lockf(self.lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
def __init__(self, path):
self.lock_file = open(path, "w")
if fcntl:
fcntl.lockf(self.lock_file, fcntl.LOCK_EX)
def release(self):
"""Unlock the file and close the file object"""
fcntl.lockf(self.file, fcntl.LOCK_UN)
self.file.close()
def lock_pid_file():
"""Lock the flashfocus PID file."""
fcntl.lockf(PID, fcntl.LOCK_EX | fcntl.LOCK_NB)
def release(self):
import fcntl
fcntl.lockf(self.fd, fcntl.LOCK_UN)
