from __future__ import absolute_import, unicode_literals import json import logging from virtualenv.util.six import ensure_text class Session(object): """Represents a virtual environment creation session""" def __init__(self, verbosity, app_data, interpreter, creator, seeder, activators): self._verbosity = verbosity self._app_data = app_data self._interpreter = interpreter self._creator = creator self._seeder = seeder self._activators = activators @property def verbosity(self): """The verbosity of the run""" return self._verbosity @property def interpreter(self): """Create a virtual environment based on this reference interpreter""" return self._interpreter @property def creator(self): """The creator used to build the virtual environment (must be compatible with the interpreter)""" return self._creator @property def seeder(self): """The mechanism used to provide the seed packages (pip, setuptools, wheel)""" return self._seeder @property def activators(self): """Activators used to generate activations scripts""" return self._activators def run(self): self._create() self._seed() self._activate() self.creator.pyenv_cfg.write() def _create(self): logging.info("create virtual environment via %s", ensure_text(str(self.creator))) self.creator.run() logging.debug(_DEBUG_MARKER) logging.debug("%s", _Debug(self.creator)) def _seed(self): if self.seeder is not None and self.seeder.enabled: logging.info("add seed packages via %s", self.seeder) self.seeder.run(self.creator) def _activate(self): if self.activators: logging.info( "add activators for %s", ", ".join(type(i).__name__.replace("Activator", "") for i in self.activators), ) for activator in self.activators: activator.generate(self.creator) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self._app_data.close() _DEBUG_MARKER = "=" * 30 + " target debug " + "=" * 30 class _Debug(object): """lazily populate debug""" def __init__(self, creator): self.creator = creator def __unicode__(self): return ensure_text(repr(self)) def __repr__(self): return json.dumps(self.creator.debug, indent=2)