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Zero
Running
on
Zero
File size: 2,513 Bytes
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# Copyright (c) 2025 ByteDance Ltd. and/or its affiliates
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
class Color:
RED = "\033[91m"
YELLOW = "\033[93m"
WHITE = "\033[97m"
GREEN = "\033[92m"
RESET = "\033[0m"
LOG_LEVELS = {"ERROR": 0, "WARN": 1, "INFO": 2, "DEBUG": 3}
COLOR_MAP = {"ERROR": Color.RED, "WARN": Color.YELLOW, "INFO": Color.WHITE, "DEBUG": Color.GREEN}
def get_env_log_level():
level = os.environ.get("DA3_LOG_LEVEL", "INFO").upper()
return LOG_LEVELS.get(level, LOG_LEVELS["INFO"])
class Logger:
def __init__(self):
self.level = get_env_log_level()
def log(self, level_str, *args, **kwargs):
level_key = level_str.split(":")[0].strip()
level_val = LOG_LEVELS.get(level_key)
if level_val is None:
raise ValueError(f"Unknown log level: {level_str}")
if self.level >= level_val:
color = COLOR_MAP[level_key]
msg = " ".join(str(arg) for arg in args)
# Align log level output in square brackets
# ERROR and DEBUG are 5 characters, INFO and WARN have an extra space for alignment
tag = level_key
if tag in ("INFO", "WARN"):
tag += " "
print(
f"{color}[{tag}] {msg}{Color.RESET}",
file=sys.stderr if level_key == "ERROR" else sys.stdout,
**kwargs,
)
def error(self, *args, **kwargs):
self.log("ERROR:", *args, **kwargs)
def warn(self, *args, **kwargs):
self.log("WARN:", *args, **kwargs)
def info(self, *args, **kwargs):
self.log("INFO:", *args, **kwargs)
def debug(self, *args, **kwargs):
self.log("DEBUG:", *args, **kwargs)
logger = Logger()
__all__ = ["logger"]
if __name__ == "__main__":
logger.info("This is an info message")
logger.warn("This is a warning message")
logger.error("This is an error message")
logger.debug("This is a debug message")
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