monasca-ui/tools/install_venv.py
Hervé Beraud 560c890dce Stop to use the __future__ module.
The __future__ module [1] was used in this context to ensure compatibility
between python 2 and python 3.

We previously dropped the support of python 2.7 [2] and now we only support
python 3 so we don't need to continue to use this module and the imports
listed below.

Imports commonly used and their related PEPs:
- `division` is related to PEP 238 [3]
- `print_function` is related to PEP 3105 [4]
- `unicode_literals` is related to PEP 3112 [5]
- `with_statement` is related to PEP 343 [6]
- `absolute_import` is related to PEP 328 [7]

[1] https://docs.python.org/3/library/__future__.html
[2] https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html
[3] https://www.python.org/dev/peps/pep-0238
[4] https://www.python.org/dev/peps/pep-3105
[5] https://www.python.org/dev/peps/pep-3112
[6] https://www.python.org/dev/peps/pep-0343
[7] https://www.python.org/dev/peps/pep-0328

Change-Id: I57212750f6bfc922fb462dee15567e864f73743e
2020-06-02 20:25:55 +02:00

157 lines
5.0 KiB
Python

# Copyright 2012 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Copyright 2012 OpenStack, LLC
#
# Copyright 2012 Nebula, Inc.
#
# 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 the OpenStack Dashboard development virtualenv.
"""
# flake8: noqa
import os
import subprocess
import sys
ROOT = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
VENV = os.path.join(ROOT, '.venv')
WITH_VENV = os.path.join(ROOT, 'tools', 'with_venv.sh')
PIP_REQUIRES = os.path.join(ROOT, 'requirements.txt')
TEST_REQUIRES = os.path.join(ROOT, 'test-requirements.txt')
def die(message, *args):
print >> sys.stderr, message % args
sys.exit(1)
def run_command(cmd, redirect_output=True, check_exit_code=True, cwd=ROOT,
die_message=None):
"""
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=cwd, stdout=stdout)
output = proc.communicate()[0]
if check_exit_code and proc.returncode != 0:
if die_message is None:
die('Command "%s" failed.\n%s', ' '.join(cmd), output)
else:
die(die_message)
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."""
print('Checking dependencies...')
if not HAS_VIRTUALENV:
print('Virtual environment not found.')
# Try installing it via easy_install...
if HAS_EASY_INSTALL:
print('Installing virtualenv via easy_install...', end=' ')
run_command(['easy_install', 'virtualenv'],
die_message='easy_install failed to install virtualenv'
'\ndevelopment requires virtualenv, please'
' install it using your favorite tool')
if not run_command(['which', 'virtualenv']):
die('ERROR: virtualenv not found in path.\n\ndevelopment '
' requires virtualenv, please install it using your'
' favorite package management tool and ensure'
' virtualenv is in your path')
print('virtualenv installation done.')
else:
die('easy_install not found.\n\nInstall easy_install'
' (python-setuptools in ubuntu) or virtualenv by hand,'
' then rerun.')
print('dependency check done.')
def create_virtualenv(venv=VENV):
"""Creates the virtual environment and installs PIP only into the
virtual environment
"""
print('Creating venv...', end=' ')
run_command(['virtualenv', '-q', '--no-site-packages', VENV])
print('done.')
print('Installing pip in virtualenv...', end=' ')
if not run_command([WITH_VENV, 'easy_install', 'pip']).strip():
die("Failed to install pip.")
print('done.')
print('Installing distribute in virtualenv...')
pip_install('distribute>=0.6.24')
print('done.')
def pip_install(*args):
args = [WITH_VENV, 'pip', 'install'] + list(args)
run_command(args, redirect_output=False)
def install_dependencies(venv=VENV):
print("Installing dependencies...")
print("(This may take several minutes, don't panic)")
pip_install('-r', TEST_REQUIRES)
pip_install('-r', PIP_REQUIRES)
# Tell the virtual env how to "import dashboard"
py = 'python%d.%d' % (sys.version_info[0], sys.version_info[1])
pthfile = os.path.join(venv, "lib", py, "site-packages", "dashboard.pth")
f = open(pthfile, 'w')
f.write("%s\n" % ROOT)
def install_horizon():
print('Installing horizon module in development mode...')
run_command([WITH_VENV, 'python', 'setup.py', 'develop'], cwd=ROOT)
def print_summary():
summary = """
Horizon development environment setup is complete.
To activate the virtualenv for the extent of your current shell session you
can run:
$ source .venv/bin/activate
"""
print(summary)
def main():
check_dependencies()
create_virtualenv()
install_dependencies()
install_horizon()
print_summary()
if __name__ == '__main__':
main()