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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. if getattr(record, "rich", False): assert isinstance(record.args, tuple) (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
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