class FileFollower():
'''
Use pygtail to keep track of EOF and rotated files, catch exceptions to
make things more seamless
'''
def __init__(self, path):
self.path = path
self.pygtail = None
self.last_inode = 0
def next(self):
line = ''
curr_inode = 0
if self.pygtail is None:
try:
# remove last offset file if the log file is different
# PygTail's inode detection doesn't work in certain cases
curr_inode = os.stat(self.path).st_ino
if self.last_inode != curr_inode:
os.unlink(self.path + '.offset')
self.last_inode = curr_inode
log.debug('deleted offset file, inode difference')
except Exception as e:
log.info('inode checking failed (not terminal): %s' % e)
self.pygtail = Pygtail(self.path)
try:
line = self.pygtail.next()
except StopIteration as si:
# Need to get a new instance of pygtail after this incase the inode
# has changed
self.pygtail = None
return False
return line
class FileFollower():
'''
Use pygtail to keep track of EOF and rotated files, catch exceptions to
make things more seamless
'''
def __init__(self, path):
self.path = path
self.pygtail = None
self.last_inode = 0
def next(self):
line = ''
curr_inode = 0
if self.pygtail is None:
try:
# remove last offset file if the log file is different
# PygTail's inode detection doesn't work in certain cases
curr_inode = os.stat(self.path).st_ino
if self.last_inode != curr_inode:
os.unlink(self.path + '.offset')
self.last_inode = curr_inode
log.debug('deleted offset file, inode difference')
except Exception as e:
log.info('inode checking failed (not terminal): %s' % e)
self.pygtail = Pygtail(self.path)
try:
line = self.pygtail.next()
except StopIteration as si:
# Need to get a new instance of pygtail after this incase the inode
# has changed
self.pygtail = None
return False
return line
def _tail_lines(self, filepath):
tail = Pygtail(str(filepath))
while True:
try:
self._tail_worker_enabled.wait()
if self._tail_worker_kill.is_set():
return
line = tail.next()
GLib.idle_add(self._add_line_to_log_buffer, line)
except StopIteration:
time.sleep(0.5)
class LogConsumer:
def __init__(self, file: str, logkeep: Type[LogKeep]):
self.pygtail = Pygtail(file, paranoid=True)
self.logkeep = logkeep
def consume_next_lines(self):
while True:
try:
line = self.pygtail.next()
if line:
self.logkeep.add_logline(LogLine.from_line(line))
except StopIteration:
break
if not os.path.exists(".offset"):
os.makedirs(".offset")
try:
if is_erased(file_name):
# forget about saved offset
# delete offset file
# print "remove file" # test point
os.remove(OFFSET_FILE)
except IOError:
# Error occur when first time run
pass
try:
pyg = Pygtail(file_name, OFFSET_FILE)
first_line = pyg.next()
# get log format and log type
log_type, log_format = parser.detect_log_type(first_line)
for line in Pygtail(file_name, OFFSET_FILE):
# print line # test point
error_info = parser.parse_log(line, log_type, log_format)
status_code = error_info['status_code']
if status_code == 502 or status_code == 503:
client.capture(
"raven.events.Message",
message=log_type + " " + str(status_code),
extra=error_info,
date=error_info['time']
)
