NAMESTORE: Add begin, commit and rollback API messages

Namestore service can now handle begin commit and rollback.
A test for rollback exists and works for sqlite.

1 files changed, 25 insertions, 15 deletions

diff --git a/src/include/gnunet_namestore_service.h b/src/include/gnunet_namestore_service.h
index 8b42945e1..68aeebef8 100644
--- a/src/include/gnunet_namestore_service.h
+++ b/src/include/gnunet_namestore_service.h
@@ -70,6 +70,16 @@ struct GNUNET_NAMESTORE_Handle;
  */
 struct GNUNET_NAMESTORE_ZoneIterator;
 
+/**
+ * Transaction control types.
+ * They roughly correspond to DB transaction controls
+ */
+enum GNUNET_NAMESTORE_TxControl
+{
+  GNUNET_NAMESTORE_TX_BEGIN = 0,
+  GNUNET_NAMESTORE_TX_COMMIT = 1,
+  GNUNET_NAMESTORE_TX_ROLLBACK = 2,
+};
 
 /**
  * Connect to the namestore service.
@@ -404,44 +414,44 @@ GNUNET_NAMESTORE_zone_monitor_stop (struct GNUNET_NAMESTORE_ZoneMonitor *zm);
  * Begin a namestore transaction.
  *
  * @param h handle to the namestore
- * @param error_cb function to call on error (i.e. disconnect or unable to get lock)
- *        the handle is afterwards invalid
- * @param error_cb_cls closure for @a error_cb
+ * @param cont function to call on result
+ * @param cont_cls closure for @a cont
  * @return handle to abort the request
  */
 struct GNUNET_NAMESTORE_QueueEntry *
 GNUNET_NAMESTORE_transaction_begin (struct GNUNET_NAMESTORE_Handle *h,
-                                    GNUNET_SCHEDULER_TaskCallback error_cb,
-                                    void *error_cb_cls);
+                                    GNUNET_NAMESTORE_ContinuationWithStatus
+                                    cont,
+                                    void *cont_cls);
 
 /**
  * Begin rollback all actions in a transaction.
  * Reverts all actions performed since #GNUNET_NAMESTORE_transaction_begin
  *
  * @param h handle to the namestore
- * @param error_cb function to call on error (i.e. disconnect or unable to get lock)
- *        the handle is afterwards invalid
- * @param error_cb_cls closure for @a error_cb
+ * @param cont function to call on result
+ * @param cont_cls closure for @a cont
  * @return handle to abort the request
  */
 struct GNUNET_NAMESTORE_QueueEntry *
 GNUNET_NAMESTORE_transaction_rollback (struct GNUNET_NAMESTORE_Handle *h,
-                                       GNUNET_SCHEDULER_TaskCallback error_cb,
-                                       void *error_cb_cls);
+                                     GNUNET_NAMESTORE_ContinuationWithStatus
+                                     cont,
+                                     void *cont_cls);
 /**
  * Commit a namestore transaction.
  * Saves all actions performed since #GNUNET_NAMESTORE_transaction_begin
  *
  * @param h handle to the namestore
- * @param error_cb function to call on error (i.e. disconnect or unable to get lock)
- *        the handle is afterwards invalid
- * @param error_cb_cls closure for @a error_cb
+ * @param cont function to call on result
+ * @param cont_cls closure for @a cont
  * @return handle to abort the request
  */
 struct GNUNET_NAMESTORE_QueueEntry *
 GNUNET_NAMESTORE_transaction_commit (struct GNUNET_NAMESTORE_Handle *h,
-                                     GNUNET_SCHEDULER_TaskCallback error_cb,
-                                     void *error_cb_cls);
+                                     GNUNET_NAMESTORE_ContinuationWithStatus
+                                     cont,
+                                     void *cont_cls);
 
 #if 0                           /* keep Emacsens' auto-indent happy */
 {