[aur-dev] [PATCH 1/3] aurblup: blacklist processing query changes

[Dan McGee]

* Do all list building and freeing outside of the transaction to keep it
  as short as possible.
* Remove ability to blacklist without transactions as we now only
  support InnoDB/transactional engines with proper relations.
* No need to turn autocommit off; BEGIN TRANSACTION operates regardless
  of this setting.

Signed-off-by: Dan McGee <dan at archlinux.org>
---
 scripts/aurblup/aurblup.c      |   23 +++++------------------
 scripts/aurblup/config.h.proto |    3 ---
 2 files changed, 5 insertions(+), 21 deletions(-)

diff --git a/scripts/aurblup/aurblup.c b/scripts/aurblup/aurblup.c
index fea7ffc..1f7aefc 100644
--- a/scripts/aurblup/aurblup.c
+++ b/scripts/aurblup/aurblup.c
@@ -122,19 +122,11 @@ blacklist_sync(alpm_list_t *pkgs_cur, alpm_list_t *pkgs_new)
 {
   alpm_list_t *pkgs_add, *pkgs_rem, *p;
 
-#if MYSQL_USE_TRANSACTIONS
-  if (mysql_autocommit(c, 0))
-    mysql_die("failed to turn MySQL autocommit off: %s\n");
+  pkgs_add = alpm_list_diff(pkgs_new, pkgs_cur, (alpm_list_fn_cmp)strcmp);
+  pkgs_rem = alpm_list_diff(pkgs_cur, pkgs_new, (alpm_list_fn_cmp)strcmp);
 
   if (mysql_query(c, "START TRANSACTION;"))
     mysql_die("failed to start MySQL transaction: %s\n");
-#else
-  if (mysql_query(c, "LOCK TABLES PackageBlacklist WRITE;"))
-    mysql_die("failed to lock MySQL table: %s\n");
-#endif
-
-  pkgs_add = alpm_list_diff(pkgs_new, pkgs_cur, (alpm_list_fn_cmp)strcmp);
-  pkgs_rem = alpm_list_diff(pkgs_cur, pkgs_new, (alpm_list_fn_cmp)strcmp);
 
   for (p = pkgs_add; p; p = alpm_list_next(p))
     blacklist_add(alpm_list_getdata(p));
@@ -142,16 +134,11 @@ blacklist_sync(alpm_list_t *pkgs_cur, alpm_list_t *pkgs_new)
   for (p = pkgs_rem; p; p = alpm_list_next(p))
     blacklist_remove(alpm_list_getdata(p));
 
-  alpm_list_free(pkgs_add);
-  alpm_list_free(pkgs_rem);
-
-#if MYSQL_USE_TRANSACTIONS
   if (mysql_query(c, "COMMIT;"))
     mysql_die("failed to commit MySQL transaction: %s\n");
-#else
-  if (mysql_query(c, "UNLOCK TABLES;"))
-    mysql_die("failed to unlock MySQL tables: %s\n");
-#endif
+
+  alpm_list_free(pkgs_add);
+  alpm_list_free(pkgs_rem);
 }
 
 alpm_list_t *
diff --git a/scripts/aurblup/config.h.proto b/scripts/aurblup/config.h.proto
index fc1a87b..daf1744 100644
--- a/scripts/aurblup/config.h.proto
+++ b/scripts/aurblup/config.h.proto
@@ -6,9 +6,6 @@
 #define CONFIG_KEY_PASSWD "AUR_db_pass"
 #define CONFIG_KEY_DB "AUR_db_name"
 
-/* unset this to use "LOCK TABLE" instead of transactions */
-#define MYSQL_USE_TRANSACTIONS 1
-
 /* libalpm options */
 #define ALPM_DBPATH "/var/lib/aurblup/"
 #define ALPM_MIRROR "ftp://mirrors.kernel.org/archlinux/%s/os/i686"
-- 
1.7.5.2