psi_tls_channel_bits.h

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/* Copyright (c) 2020, 2023, Oracle and/or its affiliates.
 
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  it under the terms of the GNU General Public License, version 2.0,
  as published by the Free Software Foundation.
 
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  documentation.  The authors of MySQL hereby grant you an additional
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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License, version 2.0, for more details.
 
  You should have received a copy of the GNU General Public License
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  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef COMPONENT_SERVICES_BITS_PSI_TLS_CHANNEL_BITS_H
#define COMPONENT_SERVICES_BITS_PSI_TLS_CHANNEL_BITS_H
 
/**
  @file mysql/components/services/bits/psi_tls_channel_bits.h
  Instrumentation helpers for TLS channels.
  This header file provides necessary declarations to instrument
  TLS context information.
*/
 
/**
  @defgroup psi_abi_tls_channel TLS Channel Instrumentation (ABI)
  @ingroup psi_abi
  @{
*/
 
/**
  @def PSI_TLS_CHANNEL_VERSION_1
  Performance Schema TLS Channel Interface number for version 1.
  This version is supported.
*/
#define PSI_TLS_CHANNEL_VERSION_1 1
 
/**
  @def PSI_CURRENT_TLS_CHANNEL_VERSION
  Performance Schema TLS Channel Interface number for the most recent version.
  The most current version is @c PSI_TLS_CHANNEL_VERSION_1
*/
#define PSI_CURRENT_TLS_CHANNEL_VERSION 1
 
const size_t MAX_CHANNEL_NAME_SIZE = 64;
const size_t MAX_PROPERTY_NAME_SIZE = 64;
const size_t MAX_PROPERTY_VALUE_SIZE = 512;
 
/** TLS property */
class TLS_channel_property {
 public:
  /** Channel name */
  char channel_name[MAX_CHANNEL_NAME_SIZE + 1];
  /** Property name */
  char property_name[MAX_PROPERTY_NAME_SIZE + 1];
  /** Property value */
  char property_value[MAX_PROPERTY_VALUE_SIZE + 1];
};
 
/** Iterator object */
typedef struct property_iterator_imp *property_iterator;
 
/**
  Initialize TLS property iterator
 
  @param [out] iterator TLS Property iterator object
 
  @returns Result of iterator creation
    @retval true  Success
    @retval false Failure
*/
typedef bool (*init_tls_property_iterator_t)(property_iterator *iterator);
 
/**
  De-initialize TLS property iterator
 
  @param [in] iterator TLS Property iterator object
*/
typedef void (*deinit_tls_property_iterator_t)(property_iterator iterator);
 
/**
  Get one TLS property information from current iterator position
 
  @param [in]  iterator TLS Property iterator object
  @param [out] property Property details
 
  @returns status of fetch operation
    @retval true  Success
    @retval false Failure
*/
typedef bool (*get_tls_property_t)(property_iterator iterator,
                                   TLS_channel_property *property);
 
/**
  Move TLS Property iterator to next position
 
  @param [in] iterator TLS Property iterator object
 
  @returns Status of operation
    @retval true  Success
    @retval false Iterator reached at the end
*/
typedef bool (*next_tls_property_t)(property_iterator iterator);
 
/** Property iterator callbacks */
struct TLS_channel_property_iterator {
  init_tls_property_iterator_t init_tls_property_iterator;
  deinit_tls_property_iterator_t deinit_tls_property_iterator;
  get_tls_property_t get_tls_property;
  next_tls_property_t next_tls_property;
};
 
typedef struct TLS_channel_property_iterator TLS_channel_property_iterator;
 
/**
  TLS channel information registration API
*/
typedef void (*register_tls_channel_v1_t)(
    TLS_channel_property_iterator *provider);
 
/**
  TLS channel information un registration API
*/
typedef void (*unregister_tls_channel_v1_t)(
    TLS_channel_property_iterator *provider);
 
/** @} (end of group psi_abi_tls_channel) */
#endif  // !COMPONENT_SERVICES_BITS_PSI_TLS_CHANNEL_BITS_H