Added a ListGenerations operation.

2 files changed, 53 insertions, 0 deletions

diff --git a/obnam/__init__.py b/obnam/__init__.py
index 310a0156..d45e680a 100644
--- a/obnam/__init__.py
+++ b/obnam/__init__.py
@@ -46,3 +46,4 @@ import walk
 from app import Application
 from oper import Operation, OperationFactory
 from oper_backup import Backup
+from oper_generations import ListGenerations
diff --git a/obnam/oper_generations.py b/obnam/oper_generations.py
new file mode 100644
index 00000000..3ca1a293
--- /dev/null
+++ b/obnam/oper_generations.py
@@ -0,0 +1,52 @@
+# Copyright (C) 2008  Lars Wirzenius <liw@iki.fi>
+#
+# 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.
+
+
+"""Operation to list generations in a backup store."""
+
+
+import logging
+
+import obnam
+
+
+class ListGenerations(obnam.Operation):
+
+    """List generations in the store."""
+    
+    name = "generations"
+    
+    def do_it(self, *ignored):
+        app = self.get_application()
+        host = app.load_host()
+        context = app.get_context()
+        gentimes = context.config.getboolean("backup", "generation-times")
+        if gentimes:
+            app.load_maps()
+    
+        gen_ids = host.get_generation_ids()
+        for id in gen_ids:
+            if gentimes:
+                gen = obnam.io.get_object(context, id)
+                if not gen:
+                    logging.warning("Can't find info about generation %s" % id)
+                else:
+                    start = gen.get_start_time()
+                    end = gen.get_end_time()
+                    print id, obnam.format.timestamp(start), "--", \
+                        obnam.format.timestamp(end)
+            else:
+                print id