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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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48 lines
1.5 KiB
48 lines
1.5 KiB
/* |
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#ifndef GRPC_LOAD_REPORTING_H |
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#define GRPC_LOAD_REPORTING_H |
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#include <grpc/impl/codegen/port_platform.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/** Metadata key for the gRPC LB load balancer token. |
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* |
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* The value corresponding to this key is an opaque token that is given to the |
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* frontend as part of each pick; the frontend sends this token to the backend |
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* in each request it sends when using that pick. The token is used by the |
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* backend to verify the request and to allow the backend to report load to the |
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* gRPC LB system. */ |
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#define GRPC_LB_TOKEN_MD_KEY "lb-token" |
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/** Metadata key for gRPC LB cost reporting. |
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* |
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* The value corresponding to this key is an opaque binary blob reported by the |
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* backend as part of its trailing metadata containing cost information for the |
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* call. */ |
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#define GRPC_LB_COST_MD_KEY "lb-cost-bin" |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* GRPC_LOAD_REPORTING_H */
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