/silverlining/mgr-scripts/update-service.py

#!/usr/bin/env python
import sys
sys.path.insert(0, '/usr/local/share/silverlining/lib')
import os
import shutil
from optparse import OptionParser
from silversupport.appconfig import AppConfig
from silversupport.appdata import instance_for_location, normalize_location
from silversupport.shell import apt_install, run

parser = OptionParser(
    usage="%prog INSTANCE_NAME",
    description="""\
Runs any setup necessary for the new instance's services.  Also
apt-get installs any packages listed in app.ini.
""")

parser.add_option(
    '--clear',
    action='store_true',
    help='Clear the database')

parser.add_option(
    '--location',
    help='location to update/clear (instead of INSTANCE_NAME)')

php_packages = [
    'php5',
    'php5-cgi',
    'php5-cli',
    'libapache2-mod-php5',
    ]


def update_service(instance_name, clear=False):
    app_config = AppConfig.from_instance_name(instance_name)
    app_config.install_services(clear)
    for script in app_config.package_install_script:
        print 'Running install script %s' % script
        run([script])
    packages = app_config.packages
    if packages:
        print 'Confirming packages installed: %s' % ', '.join(packages)
        apt_install(packages)
    if (app_config.platform == 'php' and
        (not os.path.exists('/usr/share/doc/php5')
         or not os.path.exists('/usr/bin/php5'))):
        apt_install(php_packages)
        run(['a2enmod', 'php5'])
        run(['/etc/init.d/apache2', 'restart'])
    tmp = os.path.join('/var/lib/silverlining/tmp', app_config.app_name)
    if os.path.exists(tmp):
        for name in os.listdir(tmp):
            fn = os.path.join(tmp, name)
            if os.path.isdir(fn):
                shutil.rmtree(fn)
            else:
                os.unlink(fn)
    else:
        os.makedirs(tmp)
    if not os.path.exists(app_config.log_dir):
        run(['sudo', '-u', 'www-data', 'mkdir', '-p', app_config.log_dir])
    for script in app_config.after_install_script:
        print 'Running post script %s' % script
        run([script])

if __name__ == '__main__':
    options, args = parser.parse_args()
    if options.location:
        instance_name = instance_for_location(*normalize_location(options.location))
    else:
        instance_name = args[0]
    update_service(instance_name, options.clear)