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Zero
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"""
Common utilities.
"""
from asyncio import AbstractEventLoop
import json
import logging
import logging.handlers
import os
import platform
import sys
from typing import AsyncGenerator, Generator
import warnings
import requests
from .constants import LOGDIR
handler = None
visited_loggers = set()
def build_logger(logger_name, logger_filename):
global handler
formatter = logging.Formatter(
fmt="%(asctime)s | %(levelname)s | %(name)s | %(message)s",
datefmt="%Y-%m-%d %H:%M:%S",
)
# Set the format of root handlers
if not logging.getLogger().handlers:
if sys.version_info[1] >= 9:
# This is for windows
logging.basicConfig(level=logging.INFO, encoding="utf-8")
else:
if platform.system() == "Windows":
warnings.warn(
"If you are running on Windows, "
"we recommend you use Python >= 3.9 for UTF-8 encoding."
)
logging.basicConfig(level=logging.INFO)
logging.getLogger().handlers[0].setFormatter(formatter)
# Redirect stdout and stderr to loggers
stdout_logger = logging.getLogger("stdout")
stdout_logger.setLevel(logging.INFO)
sl = StreamToLogger(stdout_logger, logging.INFO)
sys.stdout = sl
stderr_logger = logging.getLogger("stderr")
stderr_logger.setLevel(logging.ERROR)
sl = StreamToLogger(stderr_logger, logging.ERROR)
sys.stderr = sl
# Get logger
logger = logging.getLogger(logger_name)
logger.setLevel(logging.INFO)
# if LOGDIR is empty, then don't try output log to local file
if LOGDIR != "":
os.makedirs(LOGDIR, exist_ok=True)
filename = os.path.join(LOGDIR, logger_filename)
handler = logging.handlers.TimedRotatingFileHandler(
filename, when="D", utc=True, encoding="utf-8"
)
handler.setFormatter(formatter)
for l in [stdout_logger, stderr_logger, logger]:
if l in visited_loggers:
continue
visited_loggers.add(l)
l.addHandler(handler)
return logger
class StreamToLogger(object):
"""
Fake file-like stream object that redirects writes to a logger instance.
"""
def __init__(self, logger, log_level=logging.INFO):
self.terminal = sys.stdout
self.logger = logger
self.log_level = log_level
self.linebuf = ""
def __getattr__(self, attr):
return getattr(self.terminal, attr)
def write(self, buf):
temp_linebuf = self.linebuf + buf
self.linebuf = ""
for line in temp_linebuf.splitlines(True):
# From the io.TextIOWrapper docs:
# On output, if newline is None, any '\n' characters written
# are translated to the system default line separator.
# By default sys.stdout.write() expects '\n' newlines and then
# translates them so this is still cross platform.
if line[-1] == "\n":
encoded_message = line.encode("utf-8", "ignore").decode("utf-8")
self.logger.log(self.log_level, encoded_message.rstrip())
else:
self.linebuf += line
def flush(self):
if self.linebuf != "":
encoded_message = self.linebuf.encode("utf-8", "ignore").decode("utf-8")
self.logger.log(self.log_level, encoded_message.rstrip())
self.linebuf = "" |