Logging handler to send logs to your OpenSearch cluster with bulk SSL. Forked from https://github.com/logzio/logzio-python-handler
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
170 lines
6.1 KiB
170 lines
6.1 KiB
# This class is responsible for handling all asynchronous Logz.io's
|
|
# communication
|
|
import sys
|
|
import json
|
|
|
|
from time import sleep
|
|
from datetime import datetime
|
|
from threading import Thread, enumerate
|
|
|
|
import requests
|
|
|
|
from .logger import get_logger
|
|
|
|
if sys.version[0] == '2':
|
|
import Queue as queue
|
|
else:
|
|
import queue as queue
|
|
|
|
|
|
MAX_BULK_SIZE_IN_BYTES = 1 * 1024 * 1024 # 1 MB
|
|
|
|
|
|
def backup_logs(logs, logger):
|
|
timestamp = datetime.now().strftime('%d%m%Y-%H%M%S')
|
|
logger.info(
|
|
'Backing up your logs to logzio-failures-%s.txt', timestamp)
|
|
with open('logzio-failures-{}.txt'.format(timestamp), 'a') as f:
|
|
f.writelines('\n'.join(logs))
|
|
|
|
|
|
class LogzioSender:
|
|
def __init__(self,
|
|
token, url='https://listener.logz.io:8071',
|
|
logs_drain_timeout=5,
|
|
debug=False,
|
|
backup_logs=True):
|
|
self.token = token
|
|
self.url = '{}/?token={}'.format(url, token)
|
|
self.logs_drain_timeout = logs_drain_timeout
|
|
self.logger = get_logger(debug)
|
|
self.backup_logs = backup_logs
|
|
|
|
# Function to see if the main thread is alive
|
|
self.is_main_thread_active = lambda: any(
|
|
(i.name == 'MainThread') and i.is_alive() for i in enumerate())
|
|
|
|
# Create a queue to hold logs
|
|
self.queue = queue.Queue()
|
|
self._initialize_sending_thread()
|
|
|
|
def _initialize_sending_thread(self):
|
|
self.sending_thread = Thread(target=self._drain_queue)
|
|
self.sending_thread.daemon = False
|
|
self.sending_thread.name = 'logzio-sending-thread'
|
|
self.sending_thread.start()
|
|
|
|
def append(self, logs_message):
|
|
if not self.sending_thread.is_alive():
|
|
self._initialize_sending_thread()
|
|
|
|
# Queue lib is thread safe, no issue here
|
|
self.queue.put(json.dumps(logs_message))
|
|
|
|
def flush(self):
|
|
self._flush_queue()
|
|
|
|
def _drain_queue(self):
|
|
last_try = False
|
|
|
|
while not last_try:
|
|
# If main is exited, we should run one last time and try to remove
|
|
# all logs
|
|
if not self.is_main_thread_active():
|
|
self.logger.debug(
|
|
'Identified quit of main thread, sending logs one '
|
|
'last time')
|
|
last_try = True
|
|
|
|
try:
|
|
self._flush_queue()
|
|
except Exception as e:
|
|
self.logger.debug(
|
|
'Unexpected exception while draining queue to Logz.io, '
|
|
'swallowing. Exception: %s', e)
|
|
|
|
if not last_try:
|
|
sleep(self.logs_drain_timeout)
|
|
|
|
def _flush_queue(self):
|
|
# Sending logs until queue is empty
|
|
while not self.queue.empty():
|
|
logs_list = self._get_messages_up_to_max_allowed_size()
|
|
self.logger.debug(
|
|
'Starting to drain %s logs to Logz.io', len(logs_list))
|
|
|
|
# Not configurable from the outside
|
|
sleep_between_retries = 2
|
|
number_of_retries = 4
|
|
|
|
should_backup_to_disk = True
|
|
headers = {"Content-type": "text/plain"}
|
|
|
|
for current_try in range(number_of_retries):
|
|
should_retry = False
|
|
try:
|
|
response = requests.post(
|
|
self.url, headers=headers, data='\n'.join(logs_list))
|
|
if response.status_code != 200:
|
|
if response.status_code == 400:
|
|
self.logger.info(
|
|
'Got 400 code from Logz.io. This means that '
|
|
'some of your logs are too big, or badly '
|
|
'formatted. response: %s', response.text)
|
|
should_backup_to_disk = False
|
|
break
|
|
|
|
if response.status_code == 401:
|
|
self.logger.info(
|
|
'You are not authorized with Logz.io! Token '
|
|
'OK? dropping logs...')
|
|
should_backup_to_disk = False
|
|
break
|
|
else:
|
|
self.logger.info(
|
|
'Got %s while sending logs to Logz.io, '
|
|
'Try (%s/%s). Response: %s',
|
|
response.status_code,
|
|
current_try + 1,
|
|
number_of_retries,
|
|
response.text)
|
|
should_retry = True
|
|
else:
|
|
self.logger.debug(
|
|
'Successfully sent bulk of %s logs to '
|
|
'Logz.io!', len(logs_list))
|
|
should_backup_to_disk = False
|
|
break
|
|
except Exception as e:
|
|
self.logger.error(
|
|
'Got exception while sending logs to Logz.io, '
|
|
'Try (%s/%s). Message: %s',
|
|
current_try + 1, number_of_retries, e)
|
|
should_retry = True
|
|
|
|
if should_retry:
|
|
sleep(sleep_between_retries)
|
|
sleep_between_retries *= 2
|
|
|
|
if should_backup_to_disk and self.backup_logs:
|
|
# Write to file
|
|
self.logger.info(
|
|
'Could not send logs to Logz.io after %s tries, '
|
|
'backing up to local file system', number_of_retries)
|
|
backup_logs(logs_list, self.logger)
|
|
|
|
def _get_messages_up_to_max_allowed_size(self):
|
|
logs_list = []
|
|
current_size = 0
|
|
while not self.queue.empty():
|
|
current_log = self.queue.get()
|
|
try:
|
|
current_size += sys.getsizeof(current_log)
|
|
except TypeError:
|
|
# pypy do not support sys.getsizeof
|
|
current_size += len(current_log) * 4
|
|
|
|
logs_list.append(current_log)
|
|
if current_size >= MAX_BULK_SIZE_IN_BYTES:
|
|
break
|
|
return logs_list
|