summaryrefslogtreecommitdiffstats
path: root/pre_commit/logging_handler.py
blob: 74772beee6f5b258d9ce003fa71e9f76b948f776 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
from __future__ import annotations

import contextlib
import logging
from collections.abc import Generator

from pre_commit import color
from pre_commit import output

logger = logging.getLogger('pre_commit')

LOG_LEVEL_COLORS = {
    'DEBUG': '',
    'INFO': '',
    'WARNING': color.YELLOW,
    'ERROR': color.RED,
}


class LoggingHandler(logging.Handler):
    def __init__(self, use_color: bool) -> None:
        super().__init__()
        self.use_color = use_color

    def emit(self, record: logging.LogRecord) -> None:
        level_msg = color.format_color(
            f'[{record.levelname}]',
            LOG_LEVEL_COLORS[record.levelname],
            self.use_color,
        )
        output.write_line(f'{level_msg} {record.getMessage()}')


@contextlib.contextmanager
def logging_handler(use_color: bool) -> Generator[None]:
    handler = LoggingHandler(use_color)
    logger.addHandler(handler)
    logger.setLevel(logging.INFO)
    try:
        yield
    finally:
        logger.removeHandler(handler)