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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
/// Tracks retry throttling data for an individual server name.
typedef struct grpc_server_retry_throttle_data grpc_server_retry_throttle_data;
/// Records a failure. Returns true if it's okay to send a retry.
bool grpc_server_retry_throttle_data_record_failure(
grpc_server_retry_throttle_data* throttle_data);
/// Records a success.
void grpc_server_retry_throttle_data_record_success(
grpc_server_retry_throttle_data* throttle_data);
grpc_server_retry_throttle_data* grpc_server_retry_throttle_data_ref(
grpc_server_retry_throttle_data* throttle_data);
void grpc_server_retry_throttle_data_unref(
grpc_server_retry_throttle_data* throttle_data);
/// Initializes global map of failure data for each server name.
void grpc_retry_throttle_map_init();
/// Shuts down global map of failure data for each server name.
void grpc_retry_throttle_map_shutdown();
/// Returns a reference to the failure data for \a server_name, creating
/// a new entry if needed.
/// Caller must eventually unref via \a grpc_server_retry_throttle_data_unref().
grpc_server_retry_throttle_data* grpc_retry_throttle_map_get_data_for_server(
const char* server_name, int max_milli_tokens, int milli_token_ratio);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H */
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