Daemon: check TRT schema [closes #309]

sql/mysqld.cc

@@ -100,6 +100,8 @@
 
 #include "rpl_handler.h"
 
+#include "transaction.h"
+
 #ifdef HAVE_SYS_PRCTL_H
 #include <sys/prctl.h>
 #endif
@@ -6024,6 +6026,26 @@ int mysqld_main(int argc, char **argv)
   if (Events::init((THD*) 0, opt_noacl || opt_bootstrap))
     unireg_abort(1);
 
+  if (!opt_bootstrap)
+  {
+    THD *thd = new THD(0);
+    thd->thread_stack= (char*) &thd;
+    thd->store_globals();
+
+    {
+      TR_table trt(thd);
+      if (trt.check())
+      {
+        sql_print_error("%s schema is incorrect", trt.table_name);
+        delete thd;
+        unireg_abort(1);
+      }
+    }
+
+    trans_commit_stmt(thd);
+    delete thd;
+  }
+
   if (WSREP_ON)
   {
     if (opt_bootstrap)

sql/table.cc

@@ -8684,6 +8684,61 @@ bool TR_table::query_sees(bool &result, ulonglong trx_id1, ulonglong trx_id0,
   return false;
 }
 
+bool TR_table::check() const
+{
+  // InnoDB may not be loaded
+  if (!ha_resolve_by_legacy_type(thd, DB_TYPE_INNODB))
+    return false;
+
+  if (!table)
+    return true;
+
+  if (table->file->ht->db_type != DB_TYPE_INNODB)
+    return true;
+
+  if (table->s->fields != 5)
+    return true;
+
+  if (table->field[FLD_TRX_ID]->type() != MYSQL_TYPE_LONGLONG)
+    return true;
+
+  if (table->field[FLD_COMMIT_ID]->type() != MYSQL_TYPE_LONGLONG)
+    return true;
+
+  if (table->field[FLD_BEGIN_TS]->type() != MYSQL_TYPE_TIMESTAMP)
+    return true;
+
+  if (table->field[FLD_COMMIT_TS]->type() != MYSQL_TYPE_TIMESTAMP)
+    return true;
+
+  if (table->field[FLD_ISO_LEVEL]->type() != MYSQL_TYPE_STRING ||
+      !(table->field[FLD_ISO_LEVEL]->flags & ENUM_FLAG))
+    return true;
+
+  Field_enum *iso_level= static_cast<Field_enum *>(table->field[FLD_ISO_LEVEL]);
+  st_typelib *typelib= iso_level->typelib;
+
+  if (typelib->count != 4)
+    return true;
+
+  if (strcmp(typelib->type_names[0], "READ-UNCOMMITTED") ||
+      strcmp(typelib->type_names[1], "READ-COMMITTED") ||
+      strcmp(typelib->type_names[2], "REPEATABLE-READ") ||
+      strcmp(typelib->type_names[3], "SERIALIZABLE"))
+  {
+    return true;
+  }
+
+  if (!table->key_info || !table->key_info->key_part)
+    return true;
+
+  if (strcmp(table->key_info->key_part->field->field_name.str,
+             "transaction_id"))
+    return true;
+
+  return false;
+}
+
 void vers_select_conds_t::resolve_units(bool timestamps_only)
 {
   DBUG_ASSERT(type != FOR_SYSTEM_TIME_UNSPECIFIED);

sql/table.h

@@ -2979,6 +2979,7 @@ class TR_table: public TABLE_LIST
     DBUG_ASSERT(iso_level <= ISO_SERIALIZABLE);
     store(FLD_ISO_LEVEL, iso_level + 1);
   }
+  bool check() const;
 };
 
 #endif /* MYSQL_CLIENT */