backups: Add list of exported archives

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
Reviewed-by: Joseph Nuthalapati <njoseph@thoughtworks.com>

actions/backups

@@ -21,6 +21,7 @@ Configuration helper for backups.
 """
 
 import argparse
+import json
 import os
 import subprocess
 
@@ -54,6 +55,10 @@ def parse_arguments():
     export.add_argument('--name', help='Archive name', required=True)
     export.add_argument('--filename', help='Tarball file name', required=True)
 
+    list_exports = subparsers.add_parser(
+        'list-exports', help='List exported backup archive files')
+    list_exports.add_argument('--locations', nargs='+',
+                              help='list of locations to check')
     subparsers.required = True
     return parser.parse_args()
 
@@ -114,6 +119,21 @@ def subcommand_export(arguments):
     ], check=True)
 
 
+def subcommand_list_exports(arguments):
+    """List exported backup archive files."""
+    archive_files = []
+    for location in arguments.locations:
+        backup_path = location
+        if backup_path[-1] != '/':
+            backup_path += '/'
+        backup_path += 'FreedomBox-backups/'
+        if os.path.exists(backup_path):
+            for filename in os.listdir(backup_path):
+                archive_files.append(os.path.join(backup_path, filename))
+
+    print(json.dumps(archive_files))
+
+
 def main():
     """Parse arguments and perform all duties."""
     arguments = parse_arguments()

plinth/modules/backups/__init__.py

@@ -100,3 +100,11 @@ def get_export_locations():
                 locations.append((device['mount_points'][0], name))
 
     return locations
+
+
+def list_export_files():
+    """Return a list of exported backup archives found in storage locations."""
+    locations = [x[0] for x in get_export_locations()]
+    command = ['list-exports', '--locations'] + locations
+    output = actions.superuser_run('backups', command)
+    return json.loads(output)

plinth/modules/backups/templates/backups.html

@@ -47,6 +47,7 @@
     </a>
   </p>
 
+  <h3>{% trans 'Backup archives' %}</h3>
   {% if not archives %}
     <p>{% trans 'No archives currently exist.' %}</p>
   {% else %}
@@ -86,4 +87,26 @@
     </table>
   {% endif %}
 
+  <h3>{% trans 'Exported backup archives' %}</h3>
+  {% if not exports %}
+    <p>{% trans 'No exported backup archives were found.' %}</p>
+  {% else %}
+    <table class="table table-bordered table-condensed table-striped"
+	   id="exports-list">
+      <thead>
+        <tr>
+          <th>{% trans "Name" %}</th>
+        </tr>
+      </thead>
+
+      <tbody>
+        {% for export in exports %}
+          <tr id="export-{{ export }}" class="export">
+            <td class="export-name">{{ export }}</td>
+          </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+  {% endif %}
+
 {% endblock %}

plinth/modules/backups/views.py

@@ -42,6 +42,7 @@ class IndexView(TemplateView):
         context['description'] = backups.description
         context['info'] = backups.get_info()
         context['archives'] = backups.list_archives()
+        context['exports'] = backups.list_export_files()
         return context