forked from Mirror/pmbootstrap
198f302a36
Introduce a new module: pmb.core to contain explicitly typed pmbootstrap
API. The first component being Suffix and SuffixType. This explicitly
defines what suffixes are possible, future changes should aim to further
constrain this API (e.g. by validating against available device
codenames or architectures for buildroot suffixes).
Additionally, migrate the entire codebase over to using pathlib.Path.
This is a relatively new part of the Python standard library that uses a
more object oriented model for path handling. It also uses strong type
hinting and has other features that make it much cleaner and easier to
work with than pure f-strings. The Chroot class overloads the "/"
operator the same way the Path object does, allowing one to write paths
relative to a given chroot as:
builddir = chroot / "home/pmos/build"
The Chroot class also has a string representation ("native", or
"rootfs_valve-jupiter"), and a .path property for directly accessing the
absolute path (as a Path object).
The general idea here is to encapsulate common patterns into type hinted
code, and gradually reduce the amount of assumptions made around the
codebase so that future changes are easier to implement.
As the chroot suffixes are now part of the Chroot class, we also
implement validation for them, this encodes the rules on suffix naming
and will cause a runtime exception if a suffix doesn't follow the rules.
132 lines
4.1 KiB
Python
132 lines
4.1 KiB
Python
# Copyright 2023 Oliver Smith
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# SPDX-License-Identifier: GPL-3.0-or-later
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import logging
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import os
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import sys
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import pmb.config
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from pmb.core.types import PmbArgs
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logfd = None
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class log_handler(logging.StreamHandler):
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"""Write to stdout and to the already opened log file."""
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_args = None
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def emit(self, record):
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try:
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msg = self.format(record)
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# INFO or higher: Write to stdout
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if (not self._args.details_to_stdout and
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not self._args.quiet and
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record.levelno >= logging.INFO):
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stream = self.stream
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styles = pmb.config.styles
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msg_col = (
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msg.replace(
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"NOTE:",
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f"{styles['BLUE']}NOTE:{styles['END']}",
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1,
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)
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.replace(
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"WARNING:",
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f"{styles['YELLOW']}WARNING:{styles['END']}",
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1,
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)
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.replace(
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"ERROR:",
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f"{styles['RED']}ERROR:{styles['END']}",
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1,
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)
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.replace(
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"DONE!",
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f"{styles['GREEN']}DONE!{styles['END']}",
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1,
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)
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.replace(
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"*** ",
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f"{styles['GREEN']}*** ",
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1,
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)
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)
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msg_col += styles["END"]
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stream.write(msg_col)
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stream.write(self.terminator)
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self.flush()
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# Everything: Write to logfd
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msg = "(" + str(os.getpid()).zfill(6) + ") " + msg
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logfd.write(msg + "\n")
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logfd.flush()
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except (KeyboardInterrupt, SystemExit):
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raise
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except BaseException:
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self.handleError(record)
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def add_verbose_log_level():
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"""Add a new log level "verbose", which is below "debug".
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Also monkeypatch logging, so it can be used with logging.verbose().
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This function is based on work by Voitek Zylinski and sleepycal:
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https://stackoverflow.com/a/20602183
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All stackoverflow user contributions are licensed as CC-BY-SA:
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https://creativecommons.org/licenses/by-sa/3.0/
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"""
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logging.VERBOSE = 5
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logging.addLevelName(logging.VERBOSE, "VERBOSE")
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logging.Logger.verbose = lambda inst, msg, * \
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args, **kwargs: inst.log(logging.VERBOSE, msg, *args, **kwargs)
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logging.verbose = lambda msg, *args, **kwargs: logging.log(logging.VERBOSE,
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msg, *args,
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**kwargs)
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def init(args: PmbArgs):
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"""Set log format and add the log file descriptor to logfd, add the verbose log level."""
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global logfd
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# Set log file descriptor (logfd)
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if args.details_to_stdout:
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logfd = sys.stdout
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else:
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# Require containing directory to exist (so we don't create the work
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# folder and break the folder migration logic, which needs to set the
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# version upon creation)
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dir = os.path.dirname(args.log)
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if os.path.exists(dir):
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logfd = open(args.log, "a+")
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else:
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logfd = open(os.devnull, "a+")
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if args.action != "init":
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print(f"WARNING: Can't create log file in '{dir}', path"
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" does not exist!")
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# Set log format
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root_logger = logging.getLogger()
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root_logger.handlers = []
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formatter = logging.Formatter("[%(asctime)s] %(message)s",
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datefmt="%H:%M:%S")
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# Set log level
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add_verbose_log_level()
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root_logger.setLevel(logging.DEBUG)
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if args.verbose:
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root_logger.setLevel(logging.VERBOSE)
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# Add a custom log handler
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handler = log_handler()
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log_handler._args = args
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handler.setFormatter(formatter)
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root_logger.addHandler(handler)
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def disable():
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logger = logging.getLogger()
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logger.disabled = True
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