core.py 文件源码

def install(self):
        """Install packages or snaps related to this charm based on
        contents of self.packages or self.snaps attribute.
        """
        packages = fetch.filter_installed_packages(
            self.all_packages)
        if packages:
            hookenv.status_set('maintenance', 'Installing packages')
            fetch.apt_install(packages, fatal=True)

        if os_utils.snap_install_requested():
            if self.all_snaps:
                hookenv.status_set('maintenance', 'Installing snaps')
                os_utils.install_os_snaps(
                    os_utils.get_snaps_install_info_from_origin(
                        self.all_snaps,
                        self.config['openstack-origin'],
                        mode=self.snap_mode)
                )

        # AJK: we set this as charms can use it to detect installed state
        self.set_state('{}-installed'.format(self.name))
        self.update_api_ports()
        hookenv.status_set('maintenance',
                           'Installation complete - awaiting next status')