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https://github.com/PiBrewing/craftbeerpi4.git
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124 lines
3.9 KiB
Python
124 lines
3.9 KiB
Python
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
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import collections
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import functools
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from pylint import reporters
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from pylint.lint.utils import _patch_sys_path
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from pylint.message import Message
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try:
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import multiprocessing
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except ImportError:
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multiprocessing = None # type: ignore
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# PyLinter object used by worker processes when checking files using multiprocessing
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# should only be used by the worker processes
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_worker_linter = None
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def _get_new_args(message):
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location = (
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message.abspath,
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message.path,
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message.module,
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message.obj,
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message.line,
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message.column,
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)
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return (message.msg_id, message.symbol, location, message.msg, message.confidence)
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def _merge_stats(stats):
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merged = {}
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by_msg = collections.Counter()
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for stat in stats:
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message_stats = stat.pop("by_msg", {})
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by_msg.update(message_stats)
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for key, item in stat.items():
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if key not in merged:
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merged[key] = item
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elif isinstance(item, dict):
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merged[key].update(item)
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else:
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merged[key] = merged[key] + item
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merged["by_msg"] = by_msg
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return merged
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def _worker_initialize(linter, arguments=None):
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global _worker_linter # pylint: disable=global-statement
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_worker_linter = linter
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# On the worker process side the messages are just collected and passed back to
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# parent process as _worker_check_file function's return value
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_worker_linter.set_reporter(reporters.CollectingReporter())
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_worker_linter.open()
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# Patch sys.path so that each argument is importable just like in single job mode
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_patch_sys_path(arguments or ())
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def _worker_check_single_file(file_item):
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name, filepath, modname = file_item
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_worker_linter.open()
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_worker_linter.check_single_file(name, filepath, modname)
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msgs = [_get_new_args(m) for m in _worker_linter.reporter.messages]
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return (
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_worker_linter.current_name,
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filepath,
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_worker_linter.file_state.base_name,
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msgs,
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_worker_linter.stats,
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_worker_linter.msg_status,
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)
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def check_parallel(linter, jobs, files, arguments=None):
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"""Use the given linter to lint the files with given amount of workers (jobs)"""
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# The reporter does not need to be passed to worker processess, i.e. the reporter does
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# not need to be pickleable
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original_reporter = linter.reporter
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linter.reporter = None
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# The linter is inherited by all the pool's workers, i.e. the linter
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# is identical to the linter object here. This is requred so that
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# a custom PyLinter object can be used.
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initializer = functools.partial(_worker_initialize, arguments=arguments)
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with multiprocessing.Pool(jobs, initializer=initializer, initargs=[linter]) as pool:
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# ..and now when the workers have inherited the linter, the actual reporter
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# can be set back here on the parent process so that results get stored into
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# correct reporter
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linter.set_reporter(original_reporter)
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linter.open()
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all_stats = []
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for (
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module,
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file_path,
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base_name,
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messages,
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stats,
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msg_status,
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) in pool.imap_unordered(_worker_check_single_file, files):
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linter.file_state.base_name = base_name
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linter.set_current_module(module, file_path)
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for msg in messages:
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msg = Message(*msg)
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linter.reporter.handle_message(msg)
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all_stats.append(stats)
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linter.msg_status |= msg_status
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linter.stats = _merge_stats(all_stats)
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# Insert stats data to local checkers.
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for checker in linter.get_checkers():
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if checker is not linter:
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checker.stats = linter.stats
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