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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import re
import logging
import threading
from haproxy.haproxy_logline import HaproxyLogLine
from prometheus_client import Counter
from .metrics import NAMESPACE
JOURNAL_REGEX = re.compile(
# Dec 9
r'\A\w+\s+\d+\s+'
# 13:01:26
r'\d+:\d+:\d+\s+'
# localhost.localdomain haproxy[28029]:
r'([\.a-zA-Z0-9_-]+)\s+\w+\[\d+\]:\s+',
)
class AbstractLogProcessor(threading.Thread):
def __init__(self, metric_updaters, *args, **kwargs):
super(AbstractLogProcessor, self).__init__(*args, **kwargs)
self.metric_updaters = metric_updaters
self.processing_errors = Counter(
'processing_errors_total',
"Total log lines which could not be processed",
namespace=NAMESPACE,
)
def update_metrics(self, raw_line):
try:
raw_line = JOURNAL_REGEX.sub('', raw_line.strip())
line = HaproxyLogLine(raw_line.strip())
except Exception as e:
self.processing_errors.inc()
logging.exception("%s (line parsing error): %s" % (e, raw_line))
return
if not line.valid:
self.processing_errors.inc()
logging.warning("Failed to parse line: %s" % raw_line)
return
try:
for metric_updater in self.metric_updaters:
metric_updater(line)
except Exception as e:
self.processing_errors.inc()
logging.exception("%s (error updating metrics): %s" % (e, raw_line))
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