1 files changed, 23 insertions, 0 deletions
diff --git a/src/backend/utils/adt/amutils.c b/src/backend/utils/adt/amutils.c
index 060ffe501ec..e81d6cc0562 100644
--- a/src/backend/utils/adt/amutils.c
+++ b/src/backend/utils/adt/amutils.c
@@ -445,3 +445,26 @@ pg_index_column_has_property(PG_FUNCTION_ARGS)
 
 	return indexam_property(fcinfo, propname, InvalidOid, relid, attno);
 }
+
+/*
+ * Return the name of the given phase, as used for progress reporting by the
+ * given AM.
+ */
+Datum
+pg_indexam_progress_phasename(PG_FUNCTION_ARGS)
+{
+	Oid			amoid = PG_GETARG_OID(0);
+	int32		phasenum = PG_GETARG_INT32(1);
+	IndexAmRoutine *routine;
+	char	   *name;
+
+	routine = GetIndexAmRoutineByAmId(amoid, true);
+	if (routine == NULL || !routine->ambuildphasename)
+		PG_RETURN_NULL();
+
+	name = routine->ambuildphasename(phasenum);
+	if (!name)
+		PG_RETURN_NULL();
+
+	PG_RETURN_TEXT_P(CStringGetTextDatum(name));
+}