Merge pull request #10391 from dgquintas/lr_back_to_md

Load Reporting back to using metadata

2 files changed, 6 insertions, 12 deletions

diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 42cf201da4..9a65d34ce3 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -296,12 +296,6 @@ GRPCAPI grpc_call_error grpc_call_start_batch(grpc_call *call,
     functionality. Instead, use grpc_auth_context. */
 GRPCAPI char *grpc_call_get_peer(grpc_call *call);
 
-struct grpc_load_reporting_cost_context;
-
-/* Associate costs contained in \a cost_context to \a call. */
-GRPCAPI void grpc_call_set_load_reporting_cost_context(
-    grpc_call *call, struct grpc_load_reporting_cost_context *context);
-
 struct census_context;
 
 /** Set census context for a call; Must be called before first call to
diff --git a/include/grpc/load_reporting.h b/include/grpc/load_reporting.h
index c833ce5c63..a334a11350 100644
--- a/include/grpc/load_reporting.h
+++ b/include/grpc/load_reporting.h
@@ -35,7 +35,6 @@
 #define GRPC_LOAD_REPORTING_H
 
 #include <grpc/impl/codegen/port_platform.h>
-#include <grpc/slice.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -50,11 +49,12 @@ extern "C" {
  * gRPC LB system. */
 #define GRPC_LB_TOKEN_MD_KEY "lb-token"
 
-/** A sequence of values for load reporting purposes */
-typedef struct grpc_load_reporting_cost_context {
-  grpc_slice *values;
-  size_t values_count;
-} grpc_load_reporting_cost_context;
+/** Metadata key for gRPC LB cost reporting.
+ *
+ * The value corresponding to this key is an opaque binary blob reported by the
+ * backend as part of its trailing metadata containing cost information for the
+ * call. */
+#define GRPC_LB_COST_MD_KEY "lb-cost-bin"
 
 #ifdef __cplusplus
 }