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Viewing changes to trusty/pcrf/deps/layer/layer-docker/tactics/docker.py

  • Committer: brian baird
  • Date: 2016-08-24 18:05:17 UTC
  • Revision ID: brianlbaird@gmail.com-20160824180517-uyp6100mfwuj6les
dt demo

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trusty/pcrf/deps/layer/layer-docker/tactics/docker.py
 
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from charmtools.build.tactics import WheelhouseTactic
 
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from charmtools.utils import Process
 
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import tempfile
 
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from path import Path as path
 
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class DockerWheelhouseTactic(WheelhouseTactic):
 
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    ''' The references to process, path, and tempfile are implicit
 
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    below because  they come from the global scope of
 
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    charmtools.utils which gets passed in during
 
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    charmtools.utils.load_class
 
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    Investigate there if there is abrupt breakage here.
 
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    '''
 
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    def __call__(self, venv=None):
 
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        create_venv = venv is None
 
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        venv = venv or path(tempfile.mkdtemp())
 
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        pip = venv / 'bin' / 'pip3'
 
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        wheelhouse = self.target.directory / 'wheelhouse'
 
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        wheelhouse.mkdir_p()
 
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        if create_venv:
 
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            Process(('virtualenv', '--python', 'python3', venv)).exit_on_error()()  # noqa
 
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            Process((pip, 'install', '-U', 'pip', 'wheel')).exit_on_error()()  # noqa
 
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        Process((pip, 'install', '-U', 'setuptools')).exit_on_error()()  # noqa
 
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        for tactic in self.previous:
 
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            tactic(venv)
 
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        self._add(pip, wheelhouse, '-r', self.entity)
 
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        if create_venv:
 
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            venv.rmtree_p()