Viewing file:  session.py (2.5 KB) -rw-r--r--
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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)
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