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/*
*
* Copyright 2016 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_LOAD_REPORTING_SERVER_LOAD_REPORTING_PLUGIN_H
#define GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_PLUGIN_H
#include <grpc/impl/codegen/grpc_types.h>
#include "src/core/lib/channel/channel_stack.h"
#ifdef __cplusplus
extern "C" {
#endif
/** Identifiers for the invocation point of the users LR callback */
typedef enum grpc_load_reporting_source {
GRPC_LR_POINT_UNKNOWN = 0,
GRPC_LR_POINT_CHANNEL_CREATION,
GRPC_LR_POINT_CHANNEL_DESTRUCTION,
GRPC_LR_POINT_CALL_CREATION,
GRPC_LR_POINT_CALL_DESTRUCTION
} grpc_load_reporting_source;
/** Call information to be passed to the provided LR callback. */
typedef struct grpc_load_reporting_call_data {
const grpc_load_reporting_source source; /**< point of last data update. */
/** Unique identifier for the channel associated with the data */
intptr_t channel_id;
/** Unique identifier for the call associated with the data. If the call
* hasn't been created yet, it'll have a value of zero. */
intptr_t call_id;
/** Only valid when \a source is \a GRPC_LR_POINT_CALL_DESTRUCTION, that is,
* once the call has completed */
const grpc_call_final_info* final_info;
const char* initial_md_string; /**< value string for LR's initial md key */
const char* trailing_md_string; /**< value string for LR's trailing md key */
const char* method_name; /**< Corresponds to :path header */
} grpc_load_reporting_call_data;
/** Return a \a grpc_arg enabling load reporting */
grpc_arg grpc_load_reporting_enable_arg();
#ifdef __cplusplus
}
#endif
#endif /* GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_PLUGIN_H \
*/
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