[taler-exchange] 01/02: more aggressive rollback on failures

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grothoff pushed a commit to branch master
in repository exchange.

commit b64f718037aa318e83424fa6e2e83021908ff1dc
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Wed Dec 8 16:11:27 2021 +0100

    more aggressive rollback on failures
---
 src/exchange/taler-exchange-httpd_db.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/exchange/taler-exchange-httpd_db.c 
b/src/exchange/taler-exchange-httpd_db.c
index da495517..c091f994 100644
--- a/src/exchange/taler-exchange-httpd_db.c
+++ b/src/exchange/taler-exchange-httpd_db.c
@@ -163,15 +163,20 @@ TEH_DB_run_transaction (struct MHD_Connection *connection,
     if (GNUNET_DB_STATUS_HARD_ERROR == qs)
       return GNUNET_SYSERR;
     if (0 <= qs)
-      qs = TEH_plugin->commit (TEH_plugin->cls);
-    if (GNUNET_DB_STATUS_HARD_ERROR == qs)
     {
-      if (NULL != mhd_ret)
-        *mhd_ret = TALER_MHD_reply_with_error (connection,
-                                               MHD_HTTP_INTERNAL_SERVER_ERROR,
-                                               
TALER_EC_GENERIC_DB_COMMIT_FAILED,
-                                               NULL);
-      return GNUNET_SYSERR;
+      qs = TEH_plugin->commit (TEH_plugin->cls);
+      if (GNUNET_DB_STATUS_HARD_ERROR == qs)
+      {
+        TEH_plugin->rollback (TEH_plugin->cls);
+        if (NULL != mhd_ret)
+          *mhd_ret = TALER_MHD_reply_with_error (connection,
+                                                 
MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                                 
TALER_EC_GENERIC_DB_COMMIT_FAILED,
+                                                 NULL);
+        return GNUNET_SYSERR;
+      }
+      if (0 > qs)
+        TEH_plugin->rollback (TEH_plugin->cls);
     }
     /* make sure callback did not violate invariants! */
     GNUNET_assert ( (NULL == mhd_ret) ||

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