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__init__.py
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__pycache__
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constructors.py
(14.05 KB)
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req_file.py
(13.96 KB)
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req_install.py
(35.78 KB)
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req_set.py
(7.94 KB)
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req_tracker.py
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req_uninstall.py
(23.04 KB)
Editing: req_tracker.py
# The following comment should be removed at some point in the future. # mypy: strict-optional=False from __future__ import absolute_import import contextlib import errno import hashlib import logging import os from pip._internal.utils.temp_dir import TempDirectory from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from types import TracebackType from typing import Iterator, Optional, Set, Type from pip._internal.req.req_install import InstallRequirement from pip._internal.models.link import Link logger = logging.getLogger(__name__) class RequirementTracker(object): def __init__(self): # type: () -> None self._root = os.environ.get('PIP_REQ_TRACKER') if self._root is None: self._temp_dir = TempDirectory(delete=False, kind='req-tracker') self._root = os.environ['PIP_REQ_TRACKER'] = self._temp_dir.path logger.debug('Created requirements tracker %r', self._root) else: self._temp_dir = None logger.debug('Re-using requirements tracker %r', self._root) self._entries = set() # type: Set[InstallRequirement] def __enter__(self): # type: () -> RequirementTracker return self def __exit__( self, exc_type, # type: Optional[Type[BaseException]] exc_val, # type: Optional[BaseException] exc_tb # type: Optional[TracebackType] ): # type: (...) -> None self.cleanup() def _entry_path(self, link): # type: (Link) -> str hashed = hashlib.sha224(link.url_without_fragment.encode()).hexdigest() return os.path.join(self._root, hashed) def add(self, req): # type: (InstallRequirement) -> None link = req.link info = str(req) entry_path = self._entry_path(link) try: with open(entry_path) as fp: # Error, these's already a build in progress. raise LookupError('%s is already being built: %s' % (link, fp.read())) except IOError as e: if e.errno != errno.ENOENT: raise assert req not in self._entries with open(entry_path, 'w') as fp: fp.write(info) self._entries.add(req) logger.debug('Added %s to build tracker %r', req, self._root) def remove(self, req): # type: (InstallRequirement) -> None link = req.link self._entries.remove(req) os.unlink(self._entry_path(link)) logger.debug('Removed %s from build tracker %r', req, self._root) def cleanup(self): # type: () -> None for req in set(self._entries): self.remove(req) remove = self._temp_dir is not None if remove: self._temp_dir.cleanup() logger.debug('%s build tracker %r', 'Removed' if remove else 'Cleaned', self._root) @contextlib.contextmanager def track(self, req): # type: (InstallRequirement) -> Iterator[None] self.add(req) yield self.remove(req)
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