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/*
 *
 * Copyright 2015, 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_LIB_CHANNEL_CONTEXT_H
#define GRPC_CORE_LIB_CHANNEL_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,

  /// Reserved for traffic_class_context.
  GRPC_CONTEXT_TRAFFIC,

  /// Costs for Load Reporting.
  GRPC_CONTEXT_LR_COST,

  GRPC_CONTEXT_COUNT
} grpc_context_index;

typedef struct {
  void *value;
  void (*destroy)(void *);
} grpc_call_context_element;

#endif /* GRPC_CORE_LIB_CHANNEL_CONTEXT_H */