main: Add action loading and running infrastructure.

[matthijs/projects/backupninja.git] / src / lib / backupninja / action.py

diff --git a/src/lib/backupninja/action.py b/src/lib/backupninja/action.py
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+++ b/src/lib/backupninja/action.py
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+# -*- mode: python; sh-basic-offset: 4; indent-tabs-mode: nil; -*-
+# vim: set filetype=python sw=4 sts=4 expandtab autoindent:
+#
+#    Backupninja python reimplementation, based on original backupninja program
+#    by riseup.net.
+#    Copyright (C) 2010  Matthijs Kooijman <matthijs@stdin.nl>
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License along
+#    with this program; if not, write to the Free Software Foundation, Inc.,
+#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+""" Running backup actions """
+
+from backupninja import config
+from backupninja import handlers
+
+def run_all_actions(opts, global_config):
+    """
+    Run all defined actions.
+
+    opts are the parsed commandline options, global_config is the parsed
+    global configuration.
+    """
+    actions = config.list_actions(opts)
+
+    for action in actions:
+        run_action(action, opts, global_config)
+
+def run_action(action, opts, global_config):
+    """
+    Run a single action. opts are the parsed commandline options,
+    global_config is the parsed global configuration.
+    """
+    # Split the action filename
+    parts = action.split('.', 2)
+    if (len(parts) < 2):
+        log.error('Invalid action filename: "%s". Should be in the form name.type, where type is a valid handler.')
+        return
+    (action_name, action_ty) = parts
+
+    # Get the config for this action
+    action_config = config.get_action_config(opts, action)
+    # Create a handler for this action
+    handler = handlers.create_handler(action_ty, action_config)
+
+    if handler:
+        # Run the handler
+        handler.run()
+        handler.finish()
+    # Silently skip invalid handlers, create_handler will have
+    # logged an error