gistfile1.py

class UbuntuServer(Role):
    def provision(self):
        self.log('Starting provisioning for Cumbuca Chic...')
        self._check_user()
        self._setup_postgres()
        self._install_deb_packages()
        self._install_python_packages()
        self.log('Finished provisioning for Cumbuca Chic')

    def _check_user(self):
        with self.using(UserRole) as role:
            role.ensure_user(env.get('remote_username'), identified_by=env.get('remote_password'))

    def _install_deb_packages(self):
        with self.using(AptitudeRole) as role:
            for package in DEB_PACKAGES:
                role.ensure_package_installed(package)

    def _install_python_packages(self):
        self.provision_role(PipRole)
        with self.using(PipRole) as pip, self.using(VirtualenvRole) as venv, venv('cumbucachic'):
            pip.use_sudo = False
            self.execute('easy_install distribute')
            pip.ensure_requeriments_installed('requirements.txt')

    def _setup_postgres(self):
        with self.using(PostgreSQLRole) as role:
            role.ensure_user(env.get('database_user'))
            role.ensure_database(env.get('database_name'), owner=env.get('database_user'))