Introduce the bereq.backend* variables.

NB: bereq.backend.healthy always fails right now.

bin/varnishd/cache/cache_vrt_var.c

@@ -268,6 +268,50 @@ VRT_r_req_backend(const struct req *req)
 	return (req->director);
 }
 
+unsigned
+VRT_r_req_backend_healthy(const struct req *req)
+{
+	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
+	/*
+	 * XXX: Not optimal, but we do not have a backend in vcl_deliver
+	 * XXX: and we have to return something.
+	 */
+	if (req->director == NULL)
+		return (0);
+	CHECK_OBJ_NOTNULL(req->director, DIRECTOR_MAGIC);
+	return (VDI_Healthy(req->director, req));
+}
+
+/*--------------------------------------------------------------------*/
+
+void
+VRT_l_bereq_backend(struct busyobj *bo, struct director *be)
+{
+
+	CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
+	AN(bo->director);
+	bo->director = be;
+}
+
+struct director *
+VRT_r_bereq_backend(const struct busyobj *bo)
+{
+
+	CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
+	AN(bo->director);
+	return (bo->director);
+}
+
+unsigned
+VRT_r_bereq_backend_healthy(const struct busyobj *bo)
+{
+
+	CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
+	CHECK_OBJ_NOTNULL(bo->director, DIRECTOR_MAGIC);
+	//XXX return (VDI_Healthy(bo->director, req));
+	return (0);
+}
+
 /*--------------------------------------------------------------------*/
 
 void
@@ -517,17 +561,3 @@ VRT_r_obj_uncacheable(const struct req *req)
 	CHECK_OBJ_NOTNULL(req->obj, OBJECT_MAGIC);
 	return (req->obj->objcore->flags & OC_F_PASS ? 1 : 0);
 }
-
-unsigned
-VRT_r_req_backend_healthy(const struct req *req)
-{
-	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
-	/*
-	 * XXX: Not optimal, but we do not have a backend in vcl_deliver
-	 * XXX: and we have to return something.
-	 */
-	if (req->director == NULL)
-		return (0);
-	CHECK_OBJ_NOTNULL(req->director, DIRECTOR_MAGIC);
-	return (VDI_Healthy(req->director, req));
-}

lib/libvcl/generate.py

@@ -165,12 +165,6 @@ sp_variables = (
 		( 'proc',),
 		'cR'
 	),
-	('req.backend',
-		'BACKEND',
-		( 'proc',),
-		( 'proc',),
-		'R'
-	),
 	('req.restarts',
 		'INT',
 		( 'proc',),
@@ -219,6 +213,12 @@ sp_variables = (
 		( ),
 		'R'
 	),
+	('req.backend',
+		'BACKEND',
+		( 'proc',),
+		( 'proc',),
+		'R'
+	),
 	('req.backend.healthy',
 		'BOOL',
 		( 'proc',),
@@ -237,6 +237,18 @@ sp_variables = (
 		( 'recv',),
 		'R'
 	),
+	('bereq.backend',
+		'BACKEND',
+		( 'backend_fetch', 'backend_response'),
+		( 'backend_fetch', 'backend_response'),
+		'B'
+	),
+	('bereq.backend.healthy',
+		'BOOL',
+		( 'backend_fetch', 'backend_response'),
+		( ),
+		'B'
+	),
 	('bereq.method',
 		'STRING',
 		( 'pipe', 'backend_fetch', 'pass', 'miss', 'backend_response',),