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Running
on
Zero
| """ | |
| 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 = "" |