import logging
import os
import time
import warnings
from pathlib import Path
from logging.handlers import BaseRotatingHandler
import zmq
from openpilot.common.logging_extra import SwagLogger, SwagFormatter, SwagLogFileFormatter
from openpilot.system.hardware.hw import Paths
[docs]
def get_file_handler():
Path(Paths.swaglog_root()).mkdir(parents=True, exist_ok=True)
base_filename = os.path.join(Paths.swaglog_root(), "swaglog")
handler = SwaglogRotatingFileHandler(base_filename)
return handler
[docs]
class SwaglogRotatingFileHandler(BaseRotatingHandler):
def __init__(self, base_filename, interval=60, max_bytes=1024*256, backup_count=2500, encoding=None):
super().__init__(base_filename, mode="a", encoding=encoding, delay=True)
self.base_filename = base_filename
self.interval = interval # seconds
self.max_bytes = max_bytes
self.backup_count = backup_count
self.log_files = self.get_existing_logfiles()
log_indexes = [f.split(".")[-1] for f in self.log_files]
self.last_file_idx = max([int(i) for i in log_indexes if i.isdigit()] or [-1])
self.last_rollover = None
self.doRollover()
def _open(self):
self.last_rollover = time.monotonic()
self.last_file_idx += 1
next_filename = f"{self.base_filename}.{self.last_file_idx:010}"
stream = open(next_filename, self.mode, encoding=self.encoding)
self.log_files.insert(0, next_filename)
return stream
[docs]
def get_existing_logfiles(self):
log_files = list()
base_dir = os.path.dirname(self.base_filename)
for fn in os.listdir(base_dir):
fp = os.path.join(base_dir, fn)
if fp.startswith(self.base_filename) and os.path.isfile(fp):
log_files.append(fp)
return sorted(log_files)
[docs]
def shouldRollover(self, record):
size_exceeded = self.max_bytes > 0 and self.stream.tell() >= self.max_bytes
time_exceeded = self.interval > 0 and self.last_rollover + self.interval <= time.monotonic()
return size_exceeded or time_exceeded
[docs]
def doRollover(self):
if self.stream:
self.stream.close()
self.stream = self._open()
if self.backup_count > 0:
while len(self.log_files) > self.backup_count:
to_delete = self.log_files.pop()
if os.path.exists(to_delete): # just being safe, should always exist
os.remove(to_delete)
[docs]
class UnixDomainSocketHandler(logging.Handler):
def __init__(self, formatter):
logging.Handler.__init__(self)
self.setFormatter(formatter)
self.pid = None
self.zctx = None
self.sock = None
def __del__(self):
self.close()
[docs]
def close(self):
if self.sock is not None:
self.sock.close()
if self.zctx is not None:
self.zctx.term()
[docs]
def connect(self):
self.zctx = zmq.Context()
self.sock = self.zctx.socket(zmq.PUSH)
self.sock.setsockopt(zmq.LINGER, 10)
self.sock.connect(Paths.swaglog_ipc())
self.pid = os.getpid()
[docs]
def emit(self, record):
if os.getpid() != self.pid:
# TODO suppresses warning about forking proc with zmq socket, fix root cause
warnings.filterwarnings("ignore", category=ResourceWarning, message="unclosed.*<zmq.*>")
self.connect()
msg = self.format(record).rstrip('\n')
# print("SEND".format(repr(msg)))
try:
s = chr(record.levelno)+msg
self.sock.send(s.encode('utf8'), zmq.NOBLOCK)
except zmq.error.Again:
# drop :/
pass
[docs]
def add_file_handler(log):
"""
Function to add the file log handler to swaglog.
This can be used to store logs when logmessaged is not running.
"""
handler = get_file_handler()
handler.setFormatter(SwagLogFileFormatter(log))
log.addHandler(handler)
cloudlog = log = SwagLogger()
log.setLevel(logging.DEBUG)
outhandler = logging.StreamHandler()
print_level = os.environ.get('LOGPRINT', 'warning')
if print_level == 'debug':
outhandler.setLevel(logging.DEBUG)
elif print_level == 'info':
outhandler.setLevel(logging.INFO)
elif print_level == 'warning':
outhandler.setLevel(logging.WARNING)
ipchandler = UnixDomainSocketHandler(SwagFormatter(log))
log.addHandler(outhandler)
# logs are sent through IPC before writing to disk to prevent disk I/O blocking
log.addHandler(ipchandler)