147 lines
4.5 KiB
Python
147 lines
4.5 KiB
Python
|
|
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
#
|
|
# Copyright 2010 OpenStack, LLC
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
"""
|
|
Installation script for Melange's development virtualenv
|
|
"""
|
|
|
|
import os
|
|
import subprocess
|
|
import sys
|
|
|
|
|
|
ROOT = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
|
|
VENV = os.path.join(ROOT, '.venv')
|
|
PIP_REQUIRES = os.path.join(ROOT, 'tools', 'pip-requires')
|
|
PY_VERSION = "python%s.%s" % (sys.version_info[0], sys.version_info[1])
|
|
|
|
|
|
def die(message, *args):
|
|
print >> sys.stderr, message % args
|
|
sys.exit(1)
|
|
|
|
|
|
def check_python_version():
|
|
if sys.version_info < (2, 6):
|
|
die("Need Python Version >= 2.6")
|
|
|
|
|
|
def run_command(cmd, redirect_output=True, check_exit_code=True):
|
|
"""
|
|
Runs a command in an out-of-process shell, returning the
|
|
output of that command. Working directory is ROOT.
|
|
"""
|
|
if redirect_output:
|
|
stdout = subprocess.PIPE
|
|
else:
|
|
stdout = None
|
|
|
|
proc = subprocess.Popen(cmd, cwd=ROOT, stdout=stdout)
|
|
output = proc.communicate()[0]
|
|
if check_exit_code and proc.returncode != 0:
|
|
die('Command "%s" failed.\n%s', ' '.join(cmd), output)
|
|
return output
|
|
|
|
|
|
HAS_EASY_INSTALL = bool(run_command(['which', 'easy_install'],
|
|
check_exit_code=False).strip())
|
|
HAS_VIRTUALENV = bool(run_command(['which', 'virtualenv'],
|
|
check_exit_code=False).strip())
|
|
|
|
|
|
def check_dependencies():
|
|
"""Make sure virtualenv is in the path."""
|
|
|
|
if not HAS_VIRTUALENV:
|
|
print 'not found.'
|
|
# Try installing it via easy_install...
|
|
if HAS_EASY_INSTALL:
|
|
print 'Installing virtualenv via easy_install...',
|
|
if not (run_command(['which', 'easy_install']) and
|
|
run_command(['easy_install', 'virtualenv'])):
|
|
die('ERROR: virtualenv not found.\n\nMelange development'
|
|
' requires virtualenv, please install it using your'
|
|
' favorite package management tool')
|
|
print 'done.'
|
|
print 'done.'
|
|
|
|
|
|
def create_virtualenv(venv=VENV):
|
|
"""Creates the virtual environment and installs PIP only into the
|
|
virtual environment
|
|
"""
|
|
print 'Creating venv...',
|
|
run_command(['virtualenv', '-q', '--no-site-packages', VENV])
|
|
print 'done.'
|
|
print 'Installing pip in virtualenv...',
|
|
if not run_command(['tools/with_venv.sh', 'easy_install', 'pip']).strip():
|
|
die("Failed to install pip.")
|
|
print 'done.'
|
|
|
|
|
|
def install_dependencies(venv=VENV):
|
|
print 'Installing dependencies with pip (this can take a while)...'
|
|
# Install greenlet by hand - just listing it in the requires file does not
|
|
# get it in stalled in the right order
|
|
run_command(['tools/with_venv.sh', 'pip', 'install', '-E', venv,
|
|
'greenlet'], redirect_output=False)
|
|
run_command(['tools/with_venv.sh', 'pip', 'install', '-E', venv, '-r',
|
|
PIP_REQUIRES], redirect_output=False)
|
|
|
|
# Tell the virtual env how to "import melange"
|
|
pthfile = os.path.join(venv, "lib", PY_VERSION, "site-packages",
|
|
"melange.pth")
|
|
f = open(pthfile, 'w')
|
|
f.write("%s\n" % ROOT)
|
|
|
|
|
|
def print_help():
|
|
help = """
|
|
Melange development environment setup is complete.
|
|
|
|
Melange development uses virtualenv to track and manage Python
|
|
dependencies while in development and testing.
|
|
|
|
To activate the Melange virtualenv for the extent of your current shell
|
|
session you can run:
|
|
|
|
$ source .venv/bin/activate
|
|
|
|
Or, if you prefer, you can run commands in the virtualenv on a case by case
|
|
basis by running:
|
|
|
|
$ tools/with_venv.sh <your command>
|
|
|
|
Also, make test will automatically use the virtualenv.
|
|
"""
|
|
print help
|
|
|
|
|
|
def main(argv):
|
|
check_python_version()
|
|
check_dependencies()
|
|
create_virtualenv()
|
|
install_dependencies()
|
|
print_help()
|
|
|
|
if __name__ == '__main__':
|
|
main(sys.argv)
|