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# Mostly from django-fab-deploy
import os
import sys
from subprocess import Popen, PIPE
import yaml
from fabric.api import env, run, sudo, task, put
from fabric.context_managers import cd
from fabric.contrib import files
# helpers
def _sanitize(s):
s = s.replace(':', '_')
s = s.replace('-', '_')
s = s.replace('/', '_')
s = s.replace('"', '_')
s = s.replace("'", '_')
return s
def _config_get(service_name):
yaml_conf = Popen(['juju', 'get', service_name], stdout=PIPE)
conf = yaml.safe_load(yaml_conf.stdout)
orig_conf = yaml.safe_load(open('config.yaml', 'r'))['options']
return {k: (v['value'] if v['value'] is not None else orig_conf[k]['default']) for k,v in conf['settings'].iteritems()}
def _find_django_admin_cmd():
for cmd in ['django-admin.py', 'django-admin']:
remote_environ = run('echo $PATH')
for path in remote_environ.split(':'):
path = path.strip('"')
path = os.path.join(path, cmd)
if files.exists(path):
return path
# Initialisation
env.user = 'ubuntu'
d = yaml.safe_load(Popen(['juju','status'],stdout=PIPE).stdout)
services = d.get("services", {})
if services is None:
sys.exit(0)
env.roledefs = {}
for service in services.items():
if service is None:
continue
units = services.get(service[0], {}).get("units", {})
if units is None:
continue
for unit in units.items():
if 'public-address' in unit[1].keys():
env.roledefs.setdefault(service[0], []).append(unit[1]['public-address'])
env.roledefs.setdefault(unit[0], []).append(unit[1]['public-address'])
env.service_name = env.roles[0].split('/')[0]
env.sanitized_service_name = _sanitize(env.service_name)
env.conf = _config_get(env.service_name)
env.project_dir = os.path.join(env.conf['install_root'], env.sanitized_service_name)
env.django_settings_modules = '.'.join([env.sanitized_service_name, env.conf['django_settings']])
# Debian
@task()
def apt_install(packages):
"""
Install one or more packages.
"""
sudo('apt-get install -y %s' % packages)
@task
def apt_update():
"""
Update APT package definitions.
"""
sudo('apt-get update')
@task
def apt_dist_upgrade():
"""
Upgrade all packages.
"""
sudo('apt-get dist-upgrade -y')
@task
def apt_install_r():
"""
Install one or more packages listed in your requirements_apt_files.
"""
with cd(env.project_dir):
for req_file in env.conf['requirements_apt_files'].split(','):
sudo("apt-get install -y $(cat %s | tr '\\n' ' '" % req_file)
# Python
@task
def pip_install(packages):
"""
Install one or more packages.
"""
sudo("pip install %s" % packages)
@task
def pip_install_r():
"""
Install one or more python packages listed in your requirements_pip_files.
"""
with cd(env.project_dir):
for req_file in env.conf['requirements_pip_files'].split(','):
sudo("pip install -r %s" % req_file)
# Users
@task
def adduser(username):
"""
Adduser without password.
"""
sudo('adduser %s --disabled-password --gecos ""' % username)
@task
def ssh_add_key(pub_key_file, username=None):
"""
Add a public SSH key to the authorized_keys file on the remote machine.
"""
with open(os.path.normpath(pub_key_file), 'rt') as f:
ssh_key = f.read()
if username is None:
run('mkdir -p .ssh')
files.append('.ssh/authorized_keys', ssh_key)
else:
run('mkdir -p /home/%s/.ssh' % username)
files.append('/home/%s/.ssh/authorized_keys' % username, ssh_key)
run('chown -R %s:%s /home/%s/.ssh' % (username, username, username))
# VCS
@task
def pull():
"""
pull or update your project code on the remote machine.
"""
with cd(env.project_dir):
if env.conf['vcs'] is 'bzr':
run('bzr pull %s' % env.conf['repos_url'])
if env.conf['vcs'] is 'git':
run('git pull %s' % env.conf['repos_url'])
if env.conf['vcs'] is 'hg':
run('hg pull -u %s' % env.conf['repos_url'])
if env.conf['vcs'] is 'svn':
run('svn up %s' % env.conf['repos_url'])
delete_pyc()
reload()
# Gunicorn
@task
def reload():
"""
Reload gunicorn.
"""
sudo('service %s reload' % env.sanitized_service_name)
# Django
@task
def manage(command):
""" Runs management commands."""
django_admin_cmd = _find_django_admin_cmd()
sudo('%s %s --pythonpath=%s --settings=%s' % \
(django_admin_cmd, command, env.conf['install_root'], env.django_settings_modules), \
user=env.conf['wsgi_user'])
@task
def load_fixture(fixture_path):
""" Upload and load a fixture file"""
fixture_file = fixture_path.split('/')[-1]
put(fixture_path, '/tmp/')
manage('loaddata %s' % os.path.join('/tmp/', fixture_file))
run('rm %s' % os.path.join('/tmp/', fixture_file))
# Utils
@task
def delete_pyc():
""" Deletes *.pyc files from project source dir """
with env.project_dir:
run("find . -name '*.pyc' -delete")
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