| /* |
| * |
| * Copyright 2017, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPC_LOAD_REPORTING_H |
| #define GRPC_LOAD_REPORTING_H |
| |
| #include <grpc/impl/codegen/port_platform.h> |
| #include <grpc/slice.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** Metadata key for the gRPC LB load balancer token. |
| * |
| * The value corresponding to this key is an opaque token that is given to the |
| * frontend as part of each pick; the frontend sends this token to the backend |
| * in each request it sends when using that pick. The token is used by the |
| * backend to verify the request and to allow the backend to report load to the |
| * 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; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* GRPC_LOAD_REPORTING_H */ |