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import contextlib
import errno
import logging
import logging.handlers
import os
import sys
import threading
from dataclasses import dataclass
from io import TextIOWrapper
from logging import Filter
from typing import Any, ClassVar, Generator, List, Optional, TextIO, Type
from pip._vendor.rich.console import (
Console,
ConsoleOptions,
ConsoleRenderable,
RenderableType,
RenderResult,
RichCast,
)
from pip._vendor.rich.highlighter import NullHighlighter
from pip._vendor.rich.logging import RichHandler
from pip._vendor.rich.segment import Segment
from pip._vendor.rich.style import Style
from pip._internal.utils._log import VERBOSE, getLogger
from pip._internal.utils.compat import WINDOWS
from pip._internal.utils.deprecation import DEPRECATION_MSG_PREFIX
from pip._internal.utils.misc import ensure_dir
_log_state = threading.local()
subprocess_logger = getLogger("pip.subprocessor")
class BrokenStdoutLoggingError(Exception):
"""
Raised if BrokenPipeError occurs for the stdout stream while logging.
"""
def _is_broken_pipe_error(exc_class: Type[BaseException], exc: BaseException) -> bool:
if exc_class is BrokenPipeError:
return True
# On Windows, a broken pipe can show up as EINVAL rather than EPIPE:
# https://bugs.python.org/issue19612
# https://bugs.python.org/issue30418
if not WINDOWS:
return False
return isinstance(exc, OSError) and exc.errno in (errno.EINVAL, errno.EPIPE)
@contextlib.contextmanager
def indent_log(num: int = 2) -> Generator[None, None, None]:
"""
A context manager which will cause the log output to be indented for any
log messages emitted inside it.
"""
# For thread-safety
_log_state.indentation = get_indentation()
_log_state.indentation += num
try:
yield
finally:
_log_state.indentation -= num
def get_indentation() -> int:
return getattr(_log_state, "indentation", 0)
class IndentingFormatter(logging.Formatter):
default_time_format = "%Y-%m-%dT%H:%M:%S"
def __init__(
self,
*args: Any,
add_timestamp: bool = False,
**kwargs: Any,
) -> None:
"""
A logging.Formatter that obeys the indent_log() context manager.
:param add_timestamp: A bool indicating output lines should be prefixed
with their record's timestamp.
"""
self.add_timestamp = add_timestamp
super().__init__(*args, **kwargs)
def get_message_start(self, formatted: str, levelno: int) -> str:
"""
Return the start of the formatted log message (not counting the
prefix to add to each line).
"""
if levelno < logging.WARNING:
return ""
if formatted.startswith(DEPRECATION_MSG_PREFIX):
# Then the message already has a prefix. We don't want it to
# look like "WARNING: DEPRECATION: ...."
return ""
if levelno < logging.ERROR:
return "WARNING: "
return "ERROR: "
def format(self, record: logging.LogRecord) -> str:
"""
Calls the standard formatter, but will indent all of the log message
lines by our current indentation level.
"""
formatted = super().format(record)
message_start = self.get_message_start(formatted, record.levelno)
formatted = message_start + formatted
prefix = ""
if self.add_timestamp:
prefix = f"{self.formatTime(record)} "
prefix += " " * get_indentation()
formatted = "".join([prefix + line for line in formatted.splitlines(True)])
return formatted
@dataclass
class IndentedRenderable:
renderable: RenderableType
indent: int
def __rich_console__(
self, console: Console, options: ConsoleOptions
) -> RenderResult:
segments = console.render(self.renderable, options)
lines = Segment.split_lines(segments)
for line in lines:
yield Segment(" " * self.indent)
yield from line
yield Segment("\n")
class RichPipStreamHandler(RichHandler):
KEYWORDS: ClassVar[Optional[List[str]]] = []
def __init__(self, stream: Optional[TextIO], no_color: bool) -> None:
super().__init__(
console=Console(file=stream, no_color=no_color, soft_wrap=True),
show_time=False,
show_level=False,
show_path=False,
highlighter=NullHighlighter(),
)
# Our custom override on Rich's logger, to make things work as we need them to.
def emit(self, record: logging.LogRecord) -> None:
style: Optional[Style] = None
# If we are given a diagnostic error to present, present it with indentation.
assert isinstance(record.args, tuple)
if getattr(record, "rich", False):
(rich_renderable,) = record.args
assert isinstance(
rich_renderable, (ConsoleRenderable, RichCast, str)
), f"{rich_renderable} is not rich-console-renderable"
renderable: RenderableType = IndentedRenderable(
rich_renderable, indent=get_indentation()
)
else:
message = self.format(record)
renderable = self.render_message(record, message)
if record.levelno is not None:
if record.levelno >= logging.ERROR:
style = Style(color="red")
elif record.levelno >= logging.WARNING:
style = Style(color="yellow")
try:
self.console.print(renderable, overflow="ignore", crop=False, style=style)
except Exception:
self.handleError(record)
def handleError(self, record: logging.LogRecord) -> None:
"""Called when logging is unable to log some output."""
exc_class, exc = sys.exc_info()[:2]
# If a broken pipe occurred while calling write() or flush() on the
# stdout stream in logging's Handler.emit(), then raise our special
# exception so we can handle it in main() instead of logging the
# broken pipe error and continuing.
if (
exc_class
and exc
and self.console.file is sys.stdout
and _is_broken_pipe_error(exc_class, exc)
):
raise BrokenStdoutLoggingError()
return super().handleError(record)
class BetterRotatingFileHandler(logging.handlers.RotatingFileHandler):
def _open(self) -> TextIOWrapper:
ensure_dir(os.path.dirname(self.baseFilename))
return super()._open()
class MaxLevelFilter(Filter):
def __init__(self, level: int) -> None:
self.level = level
def filter(self, record: logging.LogRecord) -> bool:
return record.levelno < self.level
class ExcludeLoggerFilter(Filter):
"""
A logging Filter that excludes records from a logger (or its children).
"""
def filter(self, record: logging.LogRecord) -> bool:
# The base Filter class allows only records from a logger (or its
# children).
return not super().filter(record)
def setup_logging(verbosity: int, no_color: bool, user_log_file: Optional[str]) -> int:
"""Configures and sets up all of the logging
Returns the requested logging level, as its integer value.
"""
# Determine the level to be logging at.
if verbosity >= 2:
level_number = logging.DEBUG
elif verbosity == 1:
level_number = VERBOSE
elif verbosity == -1:
level_number = logging.WARNING
elif verbosity == -2:
level_number = logging.ERROR
elif verbosity <= -3:
level_number = logging.CRITICAL
else:
level_number = logging.INFO
level = logging.getLevelName(level_number)
# The "root" logger should match the "console" level *unless* we also need
# to log to a user log file.
include_user_log = user_log_file is not None
if include_user_log:
additional_log_file = user_log_file
root_level = "DEBUG"
else:
additional_log_file = "/dev/null"
root_level = level
# Disable any logging besides WARNING unless we have DEBUG level logging
# enabled for vendored libraries.
vendored_log_level = "WARNING" if level in ["INFO", "ERROR"] else "DEBUG"
# Shorthands for clarity
log_streams = {
"stdout": "ext://sys.stdout",
"stderr": "ext://sys.stderr",
}
handler_classes = {
"stream": "pip._internal.utils.logging.RichPipStreamHandler",
"file": "pip._internal.utils.logging.BetterRotatingFileHandler",
}
handlers = ["console", "console_errors", "console_subprocess"] + (
["user_log"] if include_user_log else []
)
logging.config.dictConfig(
{
"version": 1,
"disable_existing_loggers": False,
"filters": {
"exclude_warnings": {
"()": "pip._internal.utils.logging.MaxLevelFilter",
"level": logging.WARNING,
},
"restrict_to_subprocess": {
"()": "logging.Filter",
"name": subprocess_logger.name,
},
"exclude_subprocess": {
"()": "pip._internal.utils.logging.ExcludeLoggerFilter",
"name": subprocess_logger.name,
},
},
"formatters": {
"indent": {
"()": IndentingFormatter,
"format": "%(message)s",
},
"indent_with_timestamp": {
"()": IndentingFormatter,
"format": "%(message)s",
"add_timestamp": True,
},
},
"handlers": {
"console": {
"level": level,
"class": handler_classes["stream"],
"no_color": no_color,
"stream": log_streams["stdout"],
"filters": ["exclude_subprocess", "exclude_warnings"],
"formatter": "indent",
},
"console_errors": {
"level": "WARNING",
"class": handler_classes["stream"],
"no_color": no_color,
"stream": log_streams["stderr"],
"filters": ["exclude_subprocess"],
"formatter": "indent",
},
# A handler responsible for logging to the console messages
# from the "subprocessor" logger.
"console_subprocess": {
"level": level,
"class": handler_classes["stream"],
"stream": log_streams["stderr"],
"no_color": no_color,
"filters": ["restrict_to_subprocess"],
"formatter": "indent",
},
"user_log": {
"level": "DEBUG",
"class": handler_classes["file"],
"filename": additional_log_file,
"encoding": "utf-8",
"delay": True,
"formatter": "indent_with_timestamp",
},
},
"root": {
"level": root_level,
"handlers": handlers,
},
"loggers": {"pip._vendor": {"level": vendored_log_level}},
}
)
return level_number