def prepare(self):
"""Prepare the installer.
:raises errors.PluginError: when an unexpected error occurs
:raises errors.MisconfigurationError: when the config is invalid
:raises errors.NoInstallationError: when can't find installation
:raises errors.NotSupportedError: when version is not supported
"""
# Verify postfix and postconf are installed
for param in ("ctl", "config_utility",):
util.verify_exe_exists(self.conf(param),
"Cannot find executable '{0}'. You can provide the "
"path to this command with --{1}".format(
self.conf(param),
self.option_name(param)))
# Set up CLI tools
self.postfix = util.PostfixUtil(self.conf('config-dir'))
self.postconf = postconf.ConfigMain(self.conf('config-utility'),
self.conf('ignore-master-overrides'),
self.conf('config-dir'))
# Ensure current configuration is valid.
self.config_test()
# Check Postfix version
self._check_version()
self._lock_config_dir()
self.install_ssl_dhparams()
def rollback_checkpoints(self, rollback=1):
"""Rollback saved checkpoints.
:param int rollback: Number of checkpoints to revert
:raises .errors.PluginError: If there is a problem with the input or
the function is unable to correctly revert the configuration
"""
super(Installer, self).rollback_checkpoints(rollback)
self.postconf = postconf.ConfigMain(self.conf('config-utility'),
self.conf('ignore-master-overrides'),
self.conf('config-dir'))
def recovery_routine(self):
super(Installer, self).recovery_routine()
self.postconf = postconf.ConfigMain(self.conf('config-utility'),
self.conf('ignore-master-overrides'),
self.conf('config-dir'))