1 files changed, 24 insertions, 0 deletions
diff --git a/extra/mariabackup/backup_debug.h b/extra/mariabackup/backup_debug.h
new file mode 100644
index 00000000..777b4f4a
--- /dev/null
+++ b/extra/mariabackup/backup_debug.h
@@ -0,0 +1,24 @@
+#pragma once
+#include "my_dbug.h"
+#ifndef DBUG_OFF
+char *dbug_mariabackup_get_val(const char *event, fil_space_t::name_type key);
+/*
+In debug mode,  execute SQL statement that was passed via environment.
+To use this facility, you need to
+
+1. Add code DBUG_EXECUTE_MARIABACKUP_EVENT("my_event_name", key););
+  to the code. key is usually a table name
+2. Set environment variable my_event_name_$key SQL statement you want to execute
+   when event occurs, in DBUG_EXECUTE_IF from above.
+   In mtr , you can set environment via 'let' statement (do not use $ as the first char
+   for the variable)
+3. start mariabackup with --dbug=+d,debug_mariabackup_events
+*/
+#define DBUG_EXECUTE_FOR_KEY(EVENT, KEY, CODE)			\
+	DBUG_EXECUTE_IF("mariabackup_inject_code",		\
+	{ char *dbug_val= dbug_mariabackup_get_val(EVENT, KEY);	\
+	  if (dbug_val) CODE })
+#else
+#define DBUG_EXECUTE_FOR_KEY(EVENT, KEY, CODE)
+#endif
+