add error log to file (#3431)

* feat(log):add_request_and_response_log

* feat[log]:add error log to file

fastdeploy/logger/formatters.py

@@ -0,0 +1,55 @@
+"""
+# Copyright (c) 2025  PaddlePaddle Authors. All Rights Reserved.
+#
+# 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.
+"""
+
+"""
+自定义日志格式化器模块
+该模块定义了 ColoredFormatter 类，用于在控制台输出带颜色的日志信息，
+便于开发者在终端中快速识别不同级别的日志。
+"""
+
+import logging
+
+
+class ColoredFormatter(logging.Formatter):
+    """
+    自定义日志格式器，用于控制台输出带颜色的日志。
+    支持的颜色：
+        - WARNING: 黄色
+        - ERROR: 红色
+        - CRITICAL: 红色
+        - 其他等级: 默认终端颜色
+    """
+
+    COLOR_CODES = {
+        logging.WARNING: 33,  # 黄色
+        logging.ERROR: 31,  # 红色
+        logging.CRITICAL: 31,  # 红色
+    }
+
+    def format(self, record):
+        """
+        格式化日志记录，并根据日志等级添加 ANSI 颜色前缀和后缀。
+        Args:
+            record (LogRecord): 日志记录对象。
+        Returns:
+            str: 带有颜色的日志消息字符串。
+        """
+        color_code = self.COLOR_CODES.get(record.levelno, 0)
+        prefix = f"\033[{color_code}m"
+        suffix = "\033[0m"
+        message = super().format(record)
+        if color_code:
+            message = f"{prefix}{message}{suffix}"
+        return message