formatter.py

#     Copyright (C) 2023  Coretex LLC
 
#     This file is part of Coretex.ai
 
#     This program is free software: you can redistribute it and/or modify
#     it under the terms of the GNU Affero General Public License as
#     published by the Free Software Foundation, either version 3 of the
#     License, or (at your option) any later version.
 
#     This program is distributed in the hope that it will be useful,
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#     GNU Affero General Public License for more details.
 
#     You should have received a copy of the GNU Affero General Public License
#     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
from typing import Optional, Literal
from logging import Formatter, LogRecord
 
import json
 
from .severity import LogSeverity
from .utils import colorMessage
 
 
FormatStyle = Literal["%", "{", "$"]
 
 
class CTXFormatter(Formatter):
 
    def __init__(
        self,
        fmt: Optional[str] = None,
        datefmt: Optional[str] = None,
        style: FormatStyle = "%",
        validate: bool = True,
        color: bool = True,
        jsonOutput: bool = True
    ) -> None:
 
        super().__init__(fmt, datefmt, style, validate)
 
        self.color = color
        self.jsonOutput = jsonOutput
 
    def format(self, record: LogRecord) -> str:
        # INFO -> Info, ERROR -> Error, etc...
        record.levelname = record.levelname.lower().capitalize()
 
        severity = LogSeverity.fromLevel(record.levelno)
        formatted = super().format(record)
 
        if self.color:
            formatted = colorMessage(severity, formatted)
 
        if self.jsonOutput:
            return json.dumps({
                "severity": severity.value,
                "message": formatted + "\n"
            })
 
        return formatted