Add cleanup jobs task

modules/joex/src/main/resources/reference.conf

@@ -81,15 +81,39 @@ docspell.joex {
   # invites, that can be configured here.
   house-keeping {
 
-    # When the house keeping task executes. Default is every 4 hours.
-    schedule = "*-*-* 0/4:00:00"
+    # When the house keeping tasks execute. Default is to run every
+    # week.
+    schedule = "Sun *-*-* 00:00:00"
 
     # This task removes invitation keys that have been created but not
     # used. The timespan here must be greater than the `invite-time'
     # setting in the rest server config file.
     cleanup-invites = {
+
+      # Whether this task is enabled.
+      enabled = true
+
+      # The minimum age of invites to be deleted.
       older-than = "30 days"
     }
+
+    # Jobs store their log output in the database. Normally this data
+    # is only interesting for some period of time. The processing logs
+    # of old files can be removed eventually.
+    cleanup-jobs = {
+
+      # Whether this task is enabled.
+      enabled = true
+
+      # The minimum age of jobs to delete. It is matched against the
+      # `finished' timestamp.
+      older-than = "30 days"
+
+      # This defines how many jobs are deleted in one transaction.
+      # Since the data to delete may get large, it can be configured
+      # whether more or less memory should be used.
+      delete-batch = "100"
+    }
   }
 
   # Configuration of text extraction