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# Copyright 2014 Pants project contributors (see CONTRIBUTORS.md).
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# Licensed under the Apache License, Version 2.0 (see LICENSE).
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__all__ = ('bootstrap_pex',)
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def pex_info_name(entry_point):
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"""Return the PEX-INFO for an entry_point"""
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return os.path.join(entry_point, 'PEX-INFO')
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def is_compressed(entry_point):
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return os.path.exists(entry_point) and not os.path.exists(pex_info_name(entry_point))
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def read_pexinfo_from_directory(entry_point):
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with open(pex_info_name(entry_point), 'rb') as fp:
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def read_pexinfo_from_zip(entry_point):
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with contextlib.closing(zipfile.ZipFile(entry_point)) as zf:
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return zf.read('PEX-INFO')
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def read_pex_info_content(entry_point):
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"""Return the raw content of a PEX-INFO."""
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if is_compressed(entry_point):
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return read_pexinfo_from_zip(entry_point)
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return read_pexinfo_from_directory(entry_point)
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def get_pex_info(entry_point):
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"""Return the PexInfo object for an entry point."""
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from . import pex_info
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pex_info_content = read_pex_info_content(entry_point)
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return pex_info.PexInfo.from_json(pex_info_content)
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raise ValueError('Invalid entry_point: %s' % entry_point)
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# TODO(wickman) Remove once resolved:
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# https://bitbucket.org/pypa/setuptools/issue/154/build_zipmanifest-results-should-be
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def monkeypatch_build_zipmanifest():
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if not hasattr(pkg_resources, 'build_zipmanifest'):
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old_build_zipmanifest = pkg_resources.build_zipmanifest
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def memoized_build_zipmanifest(archive, memo={}):
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if archive not in memo:
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memo[archive] = old_build_zipmanifest(archive)
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pkg_resources.build_zipmanifest = memoized_build_zipmanifest
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def bootstrap_pex(entry_point):
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from .finders import register_finders
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monkeypatch_build_zipmanifest()
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pex.PEX(entry_point).execute()
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def bootstrap_pex_env(entry_point):
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"""Bootstrap the current runtime environment using a given pex."""
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from .environment import PEXEnvironment
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from .finders import register_finders
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from .pex_info import PexInfo
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monkeypatch_build_zipmanifest()
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PEXEnvironment(entry_point, PexInfo.from_pex(entry_point)).activate()
added
removed
pex/pex_bootstrapper.py
