File size: 10,759 Bytes
4c65bff
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
# coding=utf-8
# Copyright 2020 Optuna, Hugging Face
#
# 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.
""" Logging utilities."""


import functools
import logging
import os
import sys
import threading
from logging import (
    CRITICAL,  # NOQA
    DEBUG,  # NOQA
    ERROR,  # NOQA
    FATAL,  # NOQA
    INFO,  # NOQA
    NOTSET,  # NOQA
    WARN,  # NOQA
    WARNING,  # NOQA
)
from typing import Optional

import huggingface_hub.utils as hf_hub_utils
from tqdm import auto as tqdm_lib


_lock = threading.Lock()
_default_handler: Optional[logging.Handler] = None

log_levels = {
    "detail": logging.DEBUG,  # will also print filename and line number
    "debug": logging.DEBUG,
    "info": logging.INFO,
    "warning": logging.WARNING,
    "error": logging.ERROR,
    "critical": logging.CRITICAL,
}

_default_log_level = logging.WARNING

_tqdm_active = True


def _get_default_logging_level():
    """
    If TRANSFORMERS_VERBOSITY env var is set to one of the valid choices return that as the new default level. If it is
    not - fall back to `_default_log_level`
    """
    env_level_str = os.getenv("TRANSFORMERS_VERBOSITY", None)
    if env_level_str:
        if env_level_str in log_levels:
            return log_levels[env_level_str]
        else:
            logging.getLogger().warning(
                f"Unknown option TRANSFORMERS_VERBOSITY={env_level_str}, "
                f"has to be one of: { ', '.join(log_levels.keys()) }"
            )
    return _default_log_level


def _get_library_name() -> str:
    return __name__.split(".")[0]


def _get_library_root_logger() -> logging.Logger:
    return logging.getLogger(_get_library_name())


def _configure_library_root_logger() -> None:
    global _default_handler

    with _lock:
        if _default_handler:
            # This library has already configured the library root logger.
            return
        _default_handler = logging.StreamHandler()  # Set sys.stderr as stream.
        # set defaults based on https://github.com/pyinstaller/pyinstaller/issues/7334#issuecomment-1357447176
        if sys.stderr is None:
            sys.stderr = open(os.devnull, "w")

        _default_handler.flush = sys.stderr.flush

        # Apply our default configuration to the library root logger.
        library_root_logger = _get_library_root_logger()
        library_root_logger.addHandler(_default_handler)
        library_root_logger.setLevel(_get_default_logging_level())
        # if logging level is debug, we add pathname and lineno to formatter for easy debugging
        if os.getenv("TRANSFORMERS_VERBOSITY", None) == "detail":
            formatter = logging.Formatter("[%(levelname)s|%(pathname)s:%(lineno)s] %(asctime)s >> %(message)s")
            _default_handler.setFormatter(formatter)

        library_root_logger.propagate = False


def _reset_library_root_logger() -> None:
    global _default_handler

    with _lock:
        if not _default_handler:
            return

        library_root_logger = _get_library_root_logger()
        library_root_logger.removeHandler(_default_handler)
        library_root_logger.setLevel(logging.NOTSET)
        _default_handler = None


def get_log_levels_dict():
    return log_levels


def get_logger(name: Optional[str] = None) -> logging.Logger:
    """
    Return a logger with the specified name.

    This function is not supposed to be directly accessed unless you are writing a custom transformers module.
    """

    if name is None:
        name = _get_library_name()

    _configure_library_root_logger()
    return logging.getLogger(name)


def get_verbosity() -> int:
    """
    Return the current level for the 🤗 Transformers's root logger as an int.

    Returns:
        `int`: The logging level.

    <Tip>

    🤗 Transformers has following logging levels:

    - 50: `transformers.logging.CRITICAL` or `transformers.logging.FATAL`
    - 40: `transformers.logging.ERROR`
    - 30: `transformers.logging.WARNING` or `transformers.logging.WARN`
    - 20: `transformers.logging.INFO`
    - 10: `transformers.logging.DEBUG`

    </Tip>"""

    _configure_library_root_logger()
    return _get_library_root_logger().getEffectiveLevel()


def set_verbosity(verbosity: int) -> None:
    """
    Set the verbosity level for the 🤗 Transformers's root logger.

    Args:
        verbosity (`int`):
            Logging level, e.g., one of:

            - `transformers.logging.CRITICAL` or `transformers.logging.FATAL`
            - `transformers.logging.ERROR`
            - `transformers.logging.WARNING` or `transformers.logging.WARN`
            - `transformers.logging.INFO`
            - `transformers.logging.DEBUG`
    """

    _configure_library_root_logger()
    _get_library_root_logger().setLevel(verbosity)


def set_verbosity_info():
    """Set the verbosity to the `INFO` level."""
    return set_verbosity(INFO)


def set_verbosity_warning():
    """Set the verbosity to the `WARNING` level."""
    return set_verbosity(WARNING)


def set_verbosity_debug():
    """Set the verbosity to the `DEBUG` level."""
    return set_verbosity(DEBUG)


def set_verbosity_error():
    """Set the verbosity to the `ERROR` level."""
    return set_verbosity(ERROR)


def disable_default_handler() -> None:
    """Disable the default handler of the HuggingFace Transformers's root logger."""

    _configure_library_root_logger()

    assert _default_handler is not None
    _get_library_root_logger().removeHandler(_default_handler)


def enable_default_handler() -> None:
    """Enable the default handler of the HuggingFace Transformers's root logger."""

    _configure_library_root_logger()

    assert _default_handler is not None
    _get_library_root_logger().addHandler(_default_handler)


def add_handler(handler: logging.Handler) -> None:
    """adds a handler to the HuggingFace Transformers's root logger."""

    _configure_library_root_logger()

    assert handler is not None
    _get_library_root_logger().addHandler(handler)


def remove_handler(handler: logging.Handler) -> None:
    """removes given handler from the HuggingFace Transformers's root logger."""

    _configure_library_root_logger()

    assert handler is not None and handler not in _get_library_root_logger().handlers
    _get_library_root_logger().removeHandler(handler)


def disable_propagation() -> None:
    """
    Disable propagation of the library log outputs. Note that log propagation is disabled by default.
    """

    _configure_library_root_logger()
    _get_library_root_logger().propagate = False


def enable_propagation() -> None:
    """
    Enable propagation of the library log outputs. Please disable the HuggingFace Transformers's default handler to
    prevent double logging if the root logger has been configured.
    """

    _configure_library_root_logger()
    _get_library_root_logger().propagate = True


def enable_explicit_format() -> None:
    """
    Enable explicit formatting for every HuggingFace Transformers's logger. The explicit formatter is as follows:
    ```
        [LEVELNAME|FILENAME|LINE NUMBER] TIME >> MESSAGE
    ```
    All handlers currently bound to the root logger are affected by this method.
    """
    handlers = _get_library_root_logger().handlers

    for handler in handlers:
        formatter = logging.Formatter("[%(levelname)s|%(filename)s:%(lineno)s] %(asctime)s >> %(message)s")
        handler.setFormatter(formatter)


def reset_format() -> None:
    """
    Resets the formatting for HuggingFace Transformers's loggers.

    All handlers currently bound to the root logger are affected by this method.
    """
    handlers = _get_library_root_logger().handlers

    for handler in handlers:
        handler.setFormatter(None)


def warning_advice(self, *args, **kwargs):
    """
    This method is identical to `logger.warning()`, but if env var TRANSFORMERS_NO_ADVISORY_WARNINGS=1 is set, this
    warning will not be printed
    """
    no_advisory_warnings = os.getenv("TRANSFORMERS_NO_ADVISORY_WARNINGS", False)
    if no_advisory_warnings:
        return
    self.warning(*args, **kwargs)


logging.Logger.warning_advice = warning_advice


@functools.lru_cache(None)
def warning_once(self, *args, **kwargs):
    """
    This method is identical to `logger.warning()`, but will emit the warning with the same message only once

    Note: The cache is for the function arguments, so 2 different callers using the same arguments will hit the cache.
    The assumption here is that all warning messages are unique across the code. If they aren't then need to switch to
    another type of cache that includes the caller frame information in the hashing function.
    """
    self.warning(*args, **kwargs)


logging.Logger.warning_once = warning_once


class EmptyTqdm:
    """Dummy tqdm which doesn't do anything."""

    def __init__(self, *args, **kwargs):  # pylint: disable=unused-argument
        self._iterator = args[0] if args else None

    def __iter__(self):
        return iter(self._iterator)

    def __getattr__(self, _):
        """Return empty function."""

        def empty_fn(*args, **kwargs):  # pylint: disable=unused-argument
            return

        return empty_fn

    def __enter__(self):
        return self

    def __exit__(self, type_, value, traceback):
        return


class _tqdm_cls:
    def __call__(self, *args, **kwargs):
        if _tqdm_active:
            return tqdm_lib.tqdm(*args, **kwargs)
        else:
            return EmptyTqdm(*args, **kwargs)

    def set_lock(self, *args, **kwargs):
        self._lock = None
        if _tqdm_active:
            return tqdm_lib.tqdm.set_lock(*args, **kwargs)

    def get_lock(self):
        if _tqdm_active:
            return tqdm_lib.tqdm.get_lock()


tqdm = _tqdm_cls()


def is_progress_bar_enabled() -> bool:
    """Return a boolean indicating whether tqdm progress bars are enabled."""
    global _tqdm_active
    return bool(_tqdm_active)


def enable_progress_bar():
    """Enable tqdm progress bar."""
    global _tqdm_active
    _tqdm_active = True
    hf_hub_utils.enable_progress_bars()


def disable_progress_bar():
    """Disable tqdm progress bar."""
    global _tqdm_active
    _tqdm_active = False
    hf_hub_utils.disable_progress_bars()