[ADD] allow setting an alternative temporary directory

auto_backup/models/db_backup.py

@@ -6,6 +6,7 @@
 
 import os
 import shutil
+import tempfile
 import traceback
 from contextlib import contextmanager
 from datetime import datetime, timedelta
@@ -54,6 +55,11 @@ class DbBackup(models.Model):
         default="local",
         help="Choose the storage method for this backup.",
     )
+    tempdir = fields.Char(
+        string="Temporary directory",
+        help="Backups first go to a temporary directory. In case you need to "
+        "put them somewhere else, fill in the directory here",
+    )
     sftp_host = fields.Char(
         string='SFTP Server',
         oldname="sftpip",
@@ -154,7 +160,8 @@ class DbBackup(models.Model):
                             shutil.copyfileobj(cached, destiny)
                     # Generate new backup
                     else:
-                        db.dump_db(self.env.cr.dbname, destiny)
+                        with rec.custom_tempdir():
+                            db.dump_db(self.env.cr.dbname, destiny)
                         backup = backup or destiny.name
                 successful |= rec
 
@@ -191,6 +198,17 @@ class DbBackup(models.Model):
         """Run all scheduled backups."""
         return self.search([]).action_backup()
 
+    @api.multi
+    @contextmanager
+    def custom_tempdir(self):
+        old_tempdir = tempfile.tempdir
+        if self.tempdir:
+            tempfile.tempdir = self.tempdir
+        try:
+            yield
+        finally:
+            tempfile.tempdir = old_tempdir
+
     @api.multi
     @contextmanager
     def backup_log(self):

auto_backup/view/db_backup_view.xml

@@ -14,6 +14,7 @@
                     <field name="folder"/>
                     <field name="days_to_keep"/>
                     <field name="method"/>
+                    <field name="tempdir" attrs="{'invisible': [('method', '!=', 'local')]}" groups="base.group_no_one" />
                 </group>
                 <div attrs="{'invisible': [('method', '!=', 'sftp')]}">
                     <div class="bg-warning text-warning">