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/*
*
* 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_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
#include <stdbool.h>
/// 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);
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H */
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