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//
//
// Copyright 2015 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_SRC_CORE_LIB_CHANNEL_CONTEXT_H
#define GRPC_SRC_CORE_LIB_CHANNEL_CONTEXT_H
#include <grpc/support/port_platform.h>
#include "src/core/lib/promise/context.h"
/// Call object context pointers.
/// Call context is represented as an array of \a grpc_call_context_elements.
/// This enum represents the indexes into the array, where each index
/// contains a different type of value.
typedef enum {
/// Value is either a \a grpc_client_security_context or a
/// \a grpc_server_security_context.
GRPC_CONTEXT_SECURITY = 0,
/// Value is a \a census_context.
GRPC_CONTEXT_TRACING,
/// Value is a CallTracerAnnotationInterface. (ClientCallTracer object on the
/// client-side call, or ServerCallTracer on the server-side.)
GRPC_CONTEXT_CALL_TRACER_ANNOTATION_INTERFACE,
/// Value is a CallTracerInterface (ServerCallTracer on the server-side,
/// CallAttemptTracer on a subchannel call.)
/// TODO(yashykt): Maybe come up with a better name. This will go away in the
/// future anyway, so not super important.
GRPC_CONTEXT_CALL_TRACER,
/// Reserved for traffic_class_context.
GRPC_CONTEXT_TRAFFIC,
/// Holds a pointer to ServiceConfigCallData associated with this call.
GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA,
/// Holds a pointer to BackendMetricProvider associated with this call on
/// the server.
GRPC_CONTEXT_BACKEND_METRIC_PROVIDER,
/// Special Google context
GRPC_CONTEXT_GOOGLE,
GRPC_CONTEXT_COUNT
} grpc_context_index;
struct grpc_call_context_element {
void* value = nullptr;
void (*destroy)(void*) = nullptr;
};
namespace grpc_core {
// Bind the legacy context array into the new style structure
// TODO(ctiller): remove as we migrate these contexts to the new system.
template <>
struct ContextType<grpc_call_context_element> {};
} // namespace grpc_core
#endif // GRPC_SRC_CORE_LIB_CHANNEL_CONTEXT_H
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