Part2: MDEV-20837 Add MariaDB_FUNCTION_PLUGIN

Removing MariaDB_FUNCTION_COLLECTION_PLUGIN

8 files changed, 69 insertions, 905 deletions

diff --git a/cmake/abi_check.cmake b/cmake/abi_check.cmake
index 8590e2f7bb6..98877be9351 100644
--- a/cmake/abi_check.cmake
+++ b/cmake/abi_check.cmake
@@ -47,7 +47,6 @@ IF(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang" AND RUN_ABI_CHECK)
     ${CMAKE_SOURCE_DIR}/include/mysql/plugin_encryption.h
     ${CMAKE_SOURCE_DIR}/include/mysql/plugin_data_type.h
     ${CMAKE_SOURCE_DIR}/include/mysql/plugin_function.h
-    ${CMAKE_SOURCE_DIR}/include/mysql/plugin_function_collection.h
   )
 
   ADD_CUSTOM_TARGET(abi_check ALL
diff --git a/include/mysql/plugin.h b/include/mysql/plugin.h
index ab67f7f4853..07e7597fbd8 100644
--- a/include/mysql/plugin.h
+++ b/include/mysql/plugin.h
@@ -90,14 +90,13 @@ typedef struct st_mysql_xid MYSQL_XID;
 #define MYSQL_AUDIT_PLUGIN           5
 #define MYSQL_REPLICATION_PLUGIN     6
 #define MYSQL_AUTHENTICATION_PLUGIN  7
-#define MYSQL_MAX_PLUGIN_TYPE_NUM    13  /* The number of plugin types   */
+#define MYSQL_MAX_PLUGIN_TYPE_NUM    12  /* The number of plugin types   */
 
 /* MariaDB plugin types */
 #define MariaDB_PASSWORD_VALIDATION_PLUGIN  8
 #define MariaDB_ENCRYPTION_PLUGIN 9
 #define MariaDB_DATA_TYPE_PLUGIN  10
 #define MariaDB_FUNCTION_PLUGIN 11
-#define MariaDB_FUNCTION_COLLECTION_PLUGIN 12
 
 /* We use the following strings to define licenses for plugins */
 #define PLUGIN_LICENSE_PROPRIETARY 0
diff --git a/include/mysql/plugin_function_collection.h b/include/mysql/plugin_function_collection.h
deleted file mode 100644
index c1b51ac5883..00000000000
--- a/include/mysql/plugin_function_collection.h
+++ /dev/null
@@ -1,101 +0,0 @@
-#ifndef MARIADB_PLUGIN_FUNCTION_COLLECTION_INCLUDED
-#define MARIADB_PLUGIN_FUNCTION_COLLECTION_INCLUDED
-/* Copyright (C) 2019, Alexander Barkov and MariaDB
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; version 2 of the License.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
-
-/**
-  @file
-
-  Data Type Plugin API.
-
-  This file defines the API for server plugins that manage function collections.
-*/
-
-#ifdef __cplusplus
-
-#include <mysql/plugin.h>
-
-/*
-  API for data type plugins. (MariaDB_FUNCTION_COLLECTION_PLUGIN)
-*/
-#define MariaDB_FUNCTION_COLLECTION_INTERFACE_VERSION (MYSQL_VERSION_ID << 8)
-
-
-class Native_func_registry_array
-{
-  const Native_func_registry *m_elements;
-  size_t m_count;
-public:
-  Native_func_registry_array()
-   :m_elements(NULL),
-    m_count(0)
-  { }
-  Native_func_registry_array(const Native_func_registry *elements, size_t count)
-   :m_elements(elements),
-    m_count(count)
-  { }
-  const Native_func_registry& element(size_t i) const
-  {
-    DBUG_ASSERT(i < m_count);
-    return m_elements[i];
-  }
-  size_t count() const { return m_count; }
-};
-
-
-class Plugin_function_collection
-{
-  int m_interface_version;
-  const Native_func_registry_array m_native_func_registry_array;
-  HASH m_hash;
-public:
-  bool init();
-  void deinit()
-  {
-    my_hash_free(&m_hash);
-  }
-  static int init_plugin(st_plugin_int *plugin)
-  {
-    Plugin_function_collection *coll=
-      reinterpret_cast<Plugin_function_collection*>(plugin->plugin->info);
-    return coll->init();
-  }
-  static int deinit_plugin(st_plugin_int *plugin)
-  {
-    Plugin_function_collection *coll=
-      reinterpret_cast<Plugin_function_collection*>(plugin->plugin->info);
-    coll->deinit();
-    return 0;
-  }
-public:
-  Plugin_function_collection(int interface_version,
-                             const Native_func_registry_array &nfra)
-   :m_interface_version(interface_version),
-    m_native_func_registry_array(nfra)
-  {
-    bzero((void*) &m_hash, sizeof(m_hash));
-  }
-  Create_func *find_native_function_builder(THD *thd,
-                                            const LEX_CSTRING &name) const;
-};
-
-
-/**
-  Data type plugin descriptor
-*/
-
-#endif /* __cplusplus */
-
-#endif /* MARIADB_PLUGIN_FUNCTION_COLLECTION_INCLUDED */
diff --git a/include/mysql/plugin_function_collection.h.pp b/include/mysql/plugin_function_collection.h.pp
deleted file mode 100644
index 75baf7d7e10..00000000000
--- a/include/mysql/plugin_function_collection.h.pp
+++ /dev/null
@@ -1,679 +0,0 @@
-class THD;
-class Item;
-typedef char my_bool;
-typedef void * MYSQL_PLUGIN;
-extern "C" {
-extern "C" {
-extern struct base64_service_st {
-  int (*base64_needed_encoded_length_ptr)(int length_of_data);
-  int (*base64_encode_max_arg_length_ptr)(void);
-  int (*base64_needed_decoded_length_ptr)(int length_of_encoded_data);
-  int (*base64_decode_max_arg_length_ptr)();
-  int (*base64_encode_ptr)(const void *src, size_t src_len, char *dst);
-  int (*base64_decode_ptr)(const char *src, size_t src_len,
-                           void *dst, const char **end_ptr, int flags);
-} *base64_service;
-int my_base64_needed_encoded_length(int length_of_data);
-int my_base64_encode_max_arg_length(void);
-int my_base64_needed_decoded_length(int length_of_encoded_data);
-int my_base64_decode_max_arg_length();
-int my_base64_encode(const void *src, size_t src_len, char *dst);
-int my_base64_decode(const char *src, size_t src_len,
-                  void *dst, const char **end_ptr, int flags);
-}
-extern "C" {
-extern void (*debug_sync_C_callback_ptr)(THD*, const char *, size_t);
-}
-extern "C" {
-struct encryption_service_st {
-  unsigned int (*encryption_key_get_latest_version_func)(unsigned int key_id);
-  unsigned int (*encryption_key_get_func)(unsigned int key_id, unsigned int key_version,
-                                          unsigned char* buffer, unsigned int* length);
-  unsigned int (*encryption_ctx_size_func)(unsigned int key_id, unsigned int key_version);
-  int (*encryption_ctx_init_func)(void *ctx, const unsigned char* key, unsigned int klen,
-                                  const unsigned char* iv, unsigned int ivlen,
-                                  int flags, unsigned int key_id,
-                                  unsigned int key_version);
-  int (*encryption_ctx_update_func)(void *ctx, const unsigned char* src, unsigned int slen,
-                                    unsigned char* dst, unsigned int* dlen);
-  int (*encryption_ctx_finish_func)(void *ctx, unsigned char* dst, unsigned int* dlen);
-  unsigned int (*encryption_encrypted_length_func)(unsigned int slen, unsigned int key_id, unsigned int key_version);
-};
-extern struct encryption_service_st encryption_handler;
-static inline unsigned int encryption_key_id_exists(unsigned int id)
-{
-  return encryption_handler.encryption_key_get_latest_version_func(id) != (~(unsigned int)0);
-}
-static inline unsigned int encryption_key_version_exists(unsigned int id, unsigned int version)
-{
-  unsigned int unused;
-  return encryption_handler.encryption_key_get_func((id),(version),(NULL),(&unused)) != (~(unsigned int)0);
-}
-static inline int encryption_crypt(const unsigned char* src, unsigned int slen,
-                                   unsigned char* dst, unsigned int* dlen,
-                                   const unsigned char* key, unsigned int klen,
-                                   const unsigned char* iv, unsigned int ivlen,
-                                   int flags, unsigned int key_id, unsigned int key_version)
-{
-  void *ctx= alloca(encryption_handler.encryption_ctx_size_func((key_id),(key_version)));
-  int res1, res2;
-  unsigned int d1, d2;
-  if ((res1= encryption_handler.encryption_ctx_init_func((ctx),(key),(klen),(iv),(ivlen),(flags),(key_id),(key_version))))
-    return res1;
-  res1= encryption_handler.encryption_ctx_update_func((ctx),(src),(slen),(dst),(&d1));
-  res2= encryption_handler.encryption_ctx_finish_func((ctx),(dst + d1),(&d2));
-  *dlen= d1 + d2;
-  return res1 ? res1 : res2;
-}
-}
-extern "C" {
-struct st_encryption_scheme_key {
-  unsigned int version;
-  unsigned char key[16];
-};
-struct st_encryption_scheme {
-  unsigned char iv[16];
-  struct st_encryption_scheme_key key[3];
-  unsigned int keyserver_requests;
-  unsigned int key_id;
-  unsigned int type;
-  void (*locker)(struct st_encryption_scheme *self, int release);
-};
-extern struct encryption_scheme_service_st {
-  int (*encryption_scheme_encrypt_func)
-                               (const unsigned char* src, unsigned int slen,
-                                unsigned char* dst, unsigned int* dlen,
-                                struct st_encryption_scheme *scheme,
-                                unsigned int key_version, unsigned int i32_1,
-                                unsigned int i32_2, unsigned long long i64);
-  int (*encryption_scheme_decrypt_func)
-                               (const unsigned char* src, unsigned int slen,
-                                unsigned char* dst, unsigned int* dlen,
-                                struct st_encryption_scheme *scheme,
-                                unsigned int key_version, unsigned int i32_1,
-                                unsigned int i32_2, unsigned long long i64);
-} *encryption_scheme_service;
-int encryption_scheme_encrypt(const unsigned char* src, unsigned int slen,
-                              unsigned char* dst, unsigned int* dlen,
-                              struct st_encryption_scheme *scheme,
-                              unsigned int key_version, unsigned int i32_1,
-                              unsigned int i32_2, unsigned long long i64);
-int encryption_scheme_decrypt(const unsigned char* src, unsigned int slen,
-                              unsigned char* dst, unsigned int* dlen,
-                              struct st_encryption_scheme *scheme,
-                              unsigned int key_version, unsigned int i32_1,
-                              unsigned int i32_2, unsigned long long i64);
-}
-extern "C" {
-enum thd_kill_levels {
-  THD_IS_NOT_KILLED=0,
-  THD_ABORT_SOFTLY=50,
-  THD_ABORT_ASAP=100,
-};
-extern struct kill_statement_service_st {
-  enum thd_kill_levels (*thd_kill_level_func)(const THD*);
-} *thd_kill_statement_service;
-enum thd_kill_levels thd_kill_level(const THD*);
-}
-extern "C" {
-typedef struct logger_handle_st LOGGER_HANDLE;
-extern struct logger_service_st {
-  void (*logger_init_mutexes)();
-  LOGGER_HANDLE* (*open)(const char *path,
-                         unsigned long long size_limit,
-                         unsigned int rotations);
-  int (*close)(LOGGER_HANDLE *log);
-  int (*vprintf)(LOGGER_HANDLE *log, const char *fmt, va_list argptr);
-  int (*printf)(LOGGER_HANDLE *log, const char *fmt, ...);
-  int (*write)(LOGGER_HANDLE *log, const char *buffer, size_t size);
-  int (*rotate)(LOGGER_HANDLE *log);
-} *logger_service;
-  void logger_init_mutexes();
-  LOGGER_HANDLE *logger_open(const char *path,
-                             unsigned long long size_limit,
-                             unsigned int rotations);
-  int logger_close(LOGGER_HANDLE *log);
-  int logger_vprintf(LOGGER_HANDLE *log, const char *fmt, va_list argptr);
-  int logger_printf(LOGGER_HANDLE *log, const char *fmt, ...);
-  int logger_write(LOGGER_HANDLE *log, const char *buffer, size_t size);
-  int logger_rotate(LOGGER_HANDLE *log);
-}
-extern "C" {
-extern struct my_md5_service_st {
-  void (*my_md5_type)(unsigned char*, const char*, size_t);
-  void (*my_md5_multi_type)(unsigned char*, ...);
-  size_t (*my_md5_context_size_type)();
-  void (*my_md5_init_type)(void *);
-  void (*my_md5_input_type)(void *, const unsigned char *, size_t);
-  void (*my_md5_result_type)(void *, unsigned char *);
-} *my_md5_service;
-void my_md5(unsigned char*, const char*, size_t);
-void my_md5_multi(unsigned char*, ...);
-size_t my_md5_context_size();
-void my_md5_init(void *context);
-void my_md5_input(void *context, const unsigned char *buf, size_t len);
-void my_md5_result(void *context, unsigned char *digest);
-}
-extern "C" {
-enum my_aes_mode {
-    MY_AES_ECB, MY_AES_CBC
-};
-extern struct my_crypt_service_st {
-  int (*my_aes_crypt_init)(void *ctx, enum my_aes_mode mode, int flags,
-                      const unsigned char* key, unsigned int klen,
-                      const unsigned char* iv, unsigned int ivlen);
-  int (*my_aes_crypt_update)(void *ctx, const unsigned char *src, unsigned int slen,
-                        unsigned char *dst, unsigned int *dlen);
-  int (*my_aes_crypt_finish)(void *ctx, unsigned char *dst, unsigned int *dlen);
-  int (*my_aes_crypt)(enum my_aes_mode mode, int flags,
-                 const unsigned char *src, unsigned int slen, unsigned char *dst, unsigned int *dlen,
-                 const unsigned char *key, unsigned int klen, const unsigned char *iv, unsigned int ivlen);
-  unsigned int (*my_aes_get_size)(enum my_aes_mode mode, unsigned int source_length);
-  unsigned int (*my_aes_ctx_size)(enum my_aes_mode mode);
-  int (*my_random_bytes)(unsigned char* buf, int num);
-} *my_crypt_service;
-int my_aes_crypt_init(void *ctx, enum my_aes_mode mode, int flags,
-                      const unsigned char* key, unsigned int klen,
-                      const unsigned char* iv, unsigned int ivlen);
-int my_aes_crypt_update(void *ctx, const unsigned char *src, unsigned int slen,
-                        unsigned char *dst, unsigned int *dlen);
-int my_aes_crypt_finish(void *ctx, unsigned char *dst, unsigned int *dlen);
-int my_aes_crypt(enum my_aes_mode mode, int flags,
-                 const unsigned char *src, unsigned int slen, unsigned char *dst, unsigned int *dlen,
-                 const unsigned char *key, unsigned int klen, const unsigned char *iv, unsigned int ivlen);
-int my_random_bytes(unsigned char* buf, int num);
-unsigned int my_aes_get_size(enum my_aes_mode mode, unsigned int source_length);
-unsigned int my_aes_ctx_size(enum my_aes_mode mode);
-}
-extern "C" {
-extern struct my_print_error_service_st {
-  void (*my_error_func)(unsigned int nr, unsigned long MyFlags, ...);
-  void (*my_printf_error_func)(unsigned int nr, const char *fmt, unsigned long MyFlags,...);
-  void (*my_printv_error_func)(unsigned int error, const char *format, unsigned long MyFlags, va_list ap);
-} *my_print_error_service;
-extern void my_error(unsigned int nr, unsigned long MyFlags, ...);
-extern void my_printf_error(unsigned int my_err, const char *format, unsigned long MyFlags, ...);
-extern void my_printv_error(unsigned int error, const char *format, unsigned long MyFlags,va_list ap);
-}
-extern "C" {
-extern struct my_snprintf_service_st {
-  size_t (*my_snprintf_type)(char*, size_t, const char*, ...);
-  size_t (*my_vsnprintf_type)(char *, size_t, const char*, va_list);
-} *my_snprintf_service;
-size_t my_snprintf(char* to, size_t n, const char* fmt, ...);
-size_t my_vsnprintf(char *to, size_t n, const char* fmt, va_list ap);
-}
-extern "C" {
-extern struct progress_report_service_st {
-  void (*thd_progress_init_func)(THD* thd, unsigned int max_stage);
-  void (*thd_progress_report_func)(THD* thd,
-                                   unsigned long long progress,
-                                   unsigned long long max_progress);
-  void (*thd_progress_next_stage_func)(THD* thd);
-  void (*thd_progress_end_func)(THD* thd);
-  const char *(*set_thd_proc_info_func)(THD*, const char *info,
-                                        const char *func,
-                                        const char *file,
-                                        unsigned int line);
-} *progress_report_service;
-void thd_progress_init(THD* thd, unsigned int max_stage);
-void thd_progress_report(THD* thd,
-                         unsigned long long progress,
-                         unsigned long long max_progress);
-void thd_progress_next_stage(THD* thd);
-void thd_progress_end(THD* thd);
-const char *set_thd_proc_info(THD*, const char * info, const char *func,
-                              const char *file, unsigned int line);
-}
-extern "C" {
-extern struct my_sha1_service_st {
-  void (*my_sha1_type)(unsigned char*, const char*, size_t);
-  void (*my_sha1_multi_type)(unsigned char*, ...);
-  size_t (*my_sha1_context_size_type)();
-  void (*my_sha1_init_type)(void *);
-  void (*my_sha1_input_type)(void *, const unsigned char *, size_t);
-  void (*my_sha1_result_type)(void *, unsigned char *);
-} *my_sha1_service;
-void my_sha1(unsigned char*, const char*, size_t);
-void my_sha1_multi(unsigned char*, ...);
-size_t my_sha1_context_size();
-void my_sha1_init(void *context);
-void my_sha1_input(void *context, const unsigned char *buf, size_t len);
-void my_sha1_result(void *context, unsigned char *digest);
-}
-extern "C" {
-extern struct my_sha2_service_st {
-  void (*my_sha224_type)(unsigned char*, const char*, size_t);
-  void (*my_sha224_multi_type)(unsigned char*, ...);
-  size_t (*my_sha224_context_size_type)();
-  void (*my_sha224_init_type)(void *);
-  void (*my_sha224_input_type)(void *, const unsigned char *, size_t);
-  void (*my_sha224_result_type)(void *, unsigned char *);
-  void (*my_sha256_type)(unsigned char*, const char*, size_t);
-  void (*my_sha256_multi_type)(unsigned char*, ...);
-  size_t (*my_sha256_context_size_type)();
-  void (*my_sha256_init_type)(void *);
-  void (*my_sha256_input_type)(void *, const unsigned char *, size_t);
-  void (*my_sha256_result_type)(void *, unsigned char *);
-  void (*my_sha384_type)(unsigned char*, const char*, size_t);
-  void (*my_sha384_multi_type)(unsigned char*, ...);
-  size_t (*my_sha384_context_size_type)();
-  void (*my_sha384_init_type)(void *);
-  void (*my_sha384_input_type)(void *, const unsigned char *, size_t);
-  void (*my_sha384_result_type)(void *, unsigned char *);
-  void (*my_sha512_type)(unsigned char*, const char*, size_t);
-  void (*my_sha512_multi_type)(unsigned char*, ...);
-  size_t (*my_sha512_context_size_type)();
-  void (*my_sha512_init_type)(void *);
-  void (*my_sha512_input_type)(void *, const unsigned char *, size_t);
-  void (*my_sha512_result_type)(void *, unsigned char *);
-} *my_sha2_service;
-void my_sha224(unsigned char*, const char*, size_t);
-void my_sha224_multi(unsigned char*, ...);
-size_t my_sha224_context_size();
-void my_sha224_init(void *context);
-void my_sha224_input(void *context, const unsigned char *buf, size_t len);
-void my_sha224_result(void *context, unsigned char *digest);
-void my_sha256(unsigned char*, const char*, size_t);
-void my_sha256_multi(unsigned char*, ...);
-size_t my_sha256_context_size();
-void my_sha256_init(void *context);
-void my_sha256_input(void *context, const unsigned char *buf, size_t len);
-void my_sha256_result(void *context, unsigned char *digest);
-void my_sha384(unsigned char*, const char*, size_t);
-void my_sha384_multi(unsigned char*, ...);
-size_t my_sha384_context_size();
-void my_sha384_init(void *context);
-void my_sha384_input(void *context, const unsigned char *buf, size_t len);
-void my_sha384_result(void *context, unsigned char *digest);
-void my_sha512(unsigned char*, const char*, size_t);
-void my_sha512_multi(unsigned char*, ...);
-size_t my_sha512_context_size();
-void my_sha512_init(void *context);
-void my_sha512_input(void *context, const unsigned char *buf, size_t len);
-void my_sha512_result(void *context, unsigned char *digest);
-}
-extern "C" {
-struct st_mysql_lex_string
-{
-  char *str;
-  size_t length;
-};
-typedef struct st_mysql_lex_string MYSQL_LEX_STRING;
-struct st_mysql_const_lex_string
-{
-  const char *str;
-  size_t length;
-};
-typedef struct st_mysql_const_lex_string MYSQL_CONST_LEX_STRING;
-extern struct thd_alloc_service_st {
-  void *(*thd_alloc_func)(THD*, size_t);
-  void *(*thd_calloc_func)(THD*, size_t);
-  char *(*thd_strdup_func)(THD*, const char *);
-  char *(*thd_strmake_func)(THD*, const char *, size_t);
-  void *(*thd_memdup_func)(THD*, const void*, size_t);
-  MYSQL_CONST_LEX_STRING *(*thd_make_lex_string_func)(THD*,
-                                        MYSQL_CONST_LEX_STRING *,
-                                        const char *, size_t, int);
-} *thd_alloc_service;
-void *thd_alloc(THD* thd, size_t size);
-void *thd_calloc(THD* thd, size_t size);
-char *thd_strdup(THD* thd, const char *str);
-char *thd_strmake(THD* thd, const char *str, size_t size);
-void *thd_memdup(THD* thd, const void* str, size_t size);
-MYSQL_CONST_LEX_STRING
-*thd_make_lex_string(THD* thd, MYSQL_CONST_LEX_STRING *lex_str,
-                     const char *str, size_t size,
-                     int allocate_lex_string);
-}
-extern "C" {
-extern struct thd_autoinc_service_st {
-  void (*thd_get_autoinc_func)(const THD* thd,
-                               unsigned long* off, unsigned long* inc);
-} *thd_autoinc_service;
-void thd_get_autoinc(const THD* thd,
-                     unsigned long* off, unsigned long* inc);
-}
-extern "C" {
-extern struct thd_error_context_service_st {
-  const char *(*thd_get_error_message_func)(const THD* thd);
-  unsigned int (*thd_get_error_number_func)(const THD* thd);
-  unsigned long (*thd_get_error_row_func)(const THD* thd);
-  void (*thd_inc_error_row_func)(THD* thd);
-  char *(*thd_get_error_context_description_func)(THD* thd,
-                                                  char *buffer,
-                                                  unsigned int length,
-                                                  unsigned int max_query_length);
-} *thd_error_context_service;
-const char *thd_get_error_message(const THD* thd);
-unsigned int thd_get_error_number(const THD* thd);
-unsigned long thd_get_error_row(const THD* thd);
-void thd_inc_error_row(THD* thd);
-char *thd_get_error_context_description(THD* thd,
-                                        char *buffer, unsigned int length,
-                                        unsigned int max_query_length);
-}
-extern "C" {
-extern struct thd_rnd_service_st {
-  double (*thd_rnd_ptr)(THD* thd);
-  void (*thd_c_r_p_ptr)(THD* thd, char *to, size_t length);
-} *thd_rnd_service;
-double thd_rnd(THD* thd);
-void thd_create_random_password(THD* thd, char *to, size_t length);
-}
-extern "C" {
-typedef int MYSQL_THD_KEY_T;
-extern struct thd_specifics_service_st {
-  int (*thd_key_create_func)(MYSQL_THD_KEY_T *key);
-  void (*thd_key_delete_func)(MYSQL_THD_KEY_T *key);
-  void *(*thd_getspecific_func)(THD* thd, MYSQL_THD_KEY_T key);
-  int (*thd_setspecific_func)(THD* thd, MYSQL_THD_KEY_T key, void *value);
-} *thd_specifics_service;
-int thd_key_create(MYSQL_THD_KEY_T *key);
-void thd_key_delete(MYSQL_THD_KEY_T *key);
-void* thd_getspecific(THD* thd, MYSQL_THD_KEY_T key);
-int thd_setspecific(THD* thd, MYSQL_THD_KEY_T key, void *value);
-}
-typedef long my_time_t;
-enum enum_mysql_timestamp_type
-{
-  MYSQL_TIMESTAMP_NONE= -2, MYSQL_TIMESTAMP_ERROR= -1,
-  MYSQL_TIMESTAMP_DATE= 0, MYSQL_TIMESTAMP_DATETIME= 1, MYSQL_TIMESTAMP_TIME= 2
-};
-typedef struct st_mysql_time
-{
-  unsigned int year, month, day, hour, minute, second;
-  unsigned long second_part;
-  my_bool neg;
-  enum enum_mysql_timestamp_type time_type;
-} MYSQL_TIME;
-extern "C" {
-extern struct thd_timezone_service_st {
-  my_time_t (*thd_TIME_to_gmt_sec)(THD* thd, const MYSQL_TIME *ltime, unsigned int *errcode);
-  void (*thd_gmt_sec_to_TIME)(THD* thd, MYSQL_TIME *ltime, my_time_t t);
-} *thd_timezone_service;
-my_time_t thd_TIME_to_gmt_sec(THD* thd, const MYSQL_TIME *ltime, unsigned int *errcode);
-void thd_gmt_sec_to_TIME(THD* thd, MYSQL_TIME *ltime, my_time_t t);
-}
-extern "C" {
-typedef enum _thd_wait_type_e {
-  THD_WAIT_SLEEP= 1,
-  THD_WAIT_DISKIO= 2,
-  THD_WAIT_ROW_LOCK= 3,
-  THD_WAIT_GLOBAL_LOCK= 4,
-  THD_WAIT_META_DATA_LOCK= 5,
-  THD_WAIT_TABLE_LOCK= 6,
-  THD_WAIT_USER_LOCK= 7,
-  THD_WAIT_BINLOG= 8,
-  THD_WAIT_GROUP_COMMIT= 9,
-  THD_WAIT_SYNC= 10,
-  THD_WAIT_NET= 11,
-  THD_WAIT_LAST= 12
-} thd_wait_type;
-extern struct thd_wait_service_st {
-  void (*thd_wait_begin_func)(THD*, int);
-  void (*thd_wait_end_func)(THD*);
-} *thd_wait_service;
-void thd_wait_begin(THD* thd, int wait_type);
-void thd_wait_end(THD* thd);
-}
-extern "C" {
-enum json_types
-{
-  JSV_BAD_JSON=-1,
-  JSV_NOTHING=0,
-  JSV_OBJECT=1,
-  JSV_ARRAY=2,
-  JSV_STRING=3,
-  JSV_NUMBER=4,
-  JSV_TRUE=5,
-  JSV_FALSE=6,
-  JSV_NULL=7
-};
-extern struct json_service_st {
-  enum json_types (*json_type)(const char *js, const char *js_end,
-                               const char **value, int *value_len);
-  enum json_types (*json_get_array_item)(const char *js, const char *js_end,
-                                         int n_item,
-                                         const char **value, int *value_len);
-  enum json_types (*json_get_object_key)(const char *js, const char *js_end,
-                                         const char *key,
-                                         const char **value, int *value_len);
-  enum json_types (*json_get_object_nkey)(const char *js,const char *js_end,
-                             int nkey,
-                             const char **keyname, const char **keyname_end,
-                             const char **value, int *value_len);
-  int (*json_escape_string)(const char *str,const char *str_end,
-                          char *json, char *json_end);
-  int (*json_unescape_json)(const char *json_str, const char *json_end,
-                          char *res, char *res_end);
-} *json_service;
-enum json_types json_type(const char *js, const char *js_end,
-                          const char **value, int *value_len);
-enum json_types json_get_array_item(const char *js, const char *js_end,
-                                    int n_item,
-                                    const char **value, int *value_len);
-enum json_types json_get_object_key(const char *js, const char *js_end,
-                                    const char *key,
-                                    const char **value, int *value_len);
-enum json_types json_get_object_nkey(const char *js,const char *js_end, int nkey,
-                       const char **keyname, const char **keyname_end,
-                       const char **value, int *value_len);
-int json_escape_string(const char *str,const char *str_end,
-                       char *json, char *json_end);
-int json_unescape_json(const char *json_str, const char *json_end,
-                       char *res, char *res_end);
-}
-}
-struct st_mysql_xid {
-  long formatID;
-  long gtrid_length;
-  long bqual_length;
-  char data[128];
-};
-typedef struct st_mysql_xid MYSQL_XID;
-enum enum_mysql_show_type
-{
-  SHOW_UNDEF, SHOW_BOOL, SHOW_UINT, SHOW_ULONG,
-  SHOW_ULONGLONG, SHOW_CHAR, SHOW_CHAR_PTR,
-  SHOW_ARRAY, SHOW_FUNC, SHOW_DOUBLE,
-  SHOW_SINT, SHOW_SLONG, SHOW_SLONGLONG, SHOW_SIMPLE_FUNC,
-  SHOW_SIZE_T, SHOW_always_last
-};
-enum enum_var_type
-{
-  SHOW_OPT_DEFAULT= 0, SHOW_OPT_SESSION, SHOW_OPT_GLOBAL
-};
-struct st_mysql_show_var {
-  const char *name;
-  void *value;
-  enum enum_mysql_show_type type;
-};
-struct system_status_var;
-typedef int (*mysql_show_var_func)(THD*, struct st_mysql_show_var*, void *, struct system_status_var *status_var, enum enum_var_type);
-struct st_mysql_sys_var;
-struct st_mysql_value;
-typedef int (*mysql_var_check_func)(THD* thd,
-                                    struct st_mysql_sys_var *var,
-                                    void *save, struct st_mysql_value *value);
-typedef void (*mysql_var_update_func)(THD* thd,
-                                      struct st_mysql_sys_var *var,
-                                      void *var_ptr, const void *save);
-struct st_mysql_plugin
-{
-  int type;
-  void *info;
-  const char *name;
-  const char *author;
-  const char *descr;
-  int license;
-  int (*init)(void *);
-  int (*deinit)(void *);
-  unsigned int version;
-  struct st_mysql_show_var *status_vars;
-  struct st_mysql_sys_var **system_vars;
-  void * __reserved1;
-  unsigned long flags;
-};
-struct st_maria_plugin
-{
-  int type;
-  void *info;
-  const char *name;
-  const char *author;
-  const char *descr;
-  int license;
-  int (*init)(void *);
-  int (*deinit)(void *);
-  unsigned int version;
-  struct st_mysql_show_var *status_vars;
-  struct st_mysql_sys_var **system_vars;
-  const char *version_info;
-  unsigned int maturity;
-};
-extern "C" {
-enum enum_ftparser_mode
-{
-  MYSQL_FTPARSER_SIMPLE_MODE= 0,
-  MYSQL_FTPARSER_WITH_STOPWORDS= 1,
-  MYSQL_FTPARSER_FULL_BOOLEAN_INFO= 2
-};
-enum enum_ft_token_type
-{
-  FT_TOKEN_EOF= 0,
-  FT_TOKEN_WORD= 1,
-  FT_TOKEN_LEFT_PAREN= 2,
-  FT_TOKEN_RIGHT_PAREN= 3,
-  FT_TOKEN_STOPWORD= 4
-};
-typedef struct st_mysql_ftparser_boolean_info
-{
-  enum enum_ft_token_type type;
-  int yesno;
-  int weight_adjust;
-  char wasign;
-  char trunc;
-  char prev;
-  char *quot;
-} MYSQL_FTPARSER_BOOLEAN_INFO;
-typedef struct st_mysql_ftparser_param
-{
-  int (*mysql_parse)(struct st_mysql_ftparser_param *,
-                     const char *doc, int doc_len);
-  int (*mysql_add_word)(struct st_mysql_ftparser_param *,
-                        const char *word, int word_len,
-                        MYSQL_FTPARSER_BOOLEAN_INFO *boolean_info);
-  void *ftparser_state;
-  void *mysql_ftparam;
-  const struct charset_info_st *cs;
-  const char *doc;
-  int length;
-  unsigned int flags;
-  enum enum_ftparser_mode mode;
-} MYSQL_FTPARSER_PARAM;
-struct st_mysql_ftparser
-{
-  int interface_version;
-  int (*parse)(MYSQL_FTPARSER_PARAM *param);
-  int (*init)(MYSQL_FTPARSER_PARAM *param);
-  int (*deinit)(MYSQL_FTPARSER_PARAM *param);
-};
-}
-struct st_mysql_daemon
-{
-  int interface_version;
-};
-struct st_mysql_information_schema
-{
-  int interface_version;
-};
-struct st_mysql_storage_engine
-{
-  int interface_version;
-};
-struct handlerton;
- struct Mysql_replication {
-   int interface_version;
- };
-struct st_mysql_value
-{
-  int (*value_type)(struct st_mysql_value *);
-  const char *(*val_str)(struct st_mysql_value *, char *buffer, int *length);
-  int (*val_real)(struct st_mysql_value *, double *realbuf);
-  int (*val_int)(struct st_mysql_value *, long long *intbuf);
-  int (*is_unsigned)(struct st_mysql_value *);
-};
-extern "C" {
-int thd_in_lock_tables(const THD* thd);
-int thd_tablespace_op(const THD* thd);
-long long thd_test_options(const THD* thd, long long test_options);
-int thd_sql_command(const THD* thd);
-void thd_storage_lock_wait(THD* thd, long long value);
-int thd_tx_isolation(const THD* thd);
-int thd_tx_is_read_only(const THD* thd);
-int mysql_tmpfile(const char *prefix);
-unsigned long thd_get_thread_id(const THD* thd);
-void thd_get_xid(const THD* thd, MYSQL_XID *xid);
-void mysql_query_cache_invalidate4(THD* thd,
-                                   const char *key, unsigned int key_length,
-                                   int using_trx);
-void *thd_get_ha_data(const THD* thd, const struct handlerton *hton);
-void thd_set_ha_data(THD* thd, const struct handlerton *hton,
-                     const void *ha_data);
-void thd_wakeup_subsequent_commits(THD* thd, int wakeup_error);
-}
-class Native_func_registry_array
-{
-  const Native_func_registry *m_elements;
-  size_t m_count;
-public:
-  Native_func_registry_array()
-   :m_elements(NULL),
-    m_count(0)
-  { }
-  Native_func_registry_array(const Native_func_registry *elements, size_t count)
-   :m_elements(elements),
-    m_count(count)
-  { }
-  const Native_func_registry& element(size_t i) const
-  {
-    DBUG_ASSERT(i < m_count);
-    return m_elements[i];
-  }
-  size_t count() const { return m_count; }
-};
-class Plugin_function_collection
-{
-  int m_interface_version;
-  const Native_func_registry_array m_native_func_registry_array;
-  HASH m_hash;
-public:
-  bool init();
-  void deinit()
-  {
-    my_hash_free(&m_hash);
-  }
-  static int init_plugin(st_plugin_int *plugin)
-  {
-    Plugin_function_collection *coll=
-      reinterpret_cast<Plugin_function_collection*>(plugin->plugin->info);
-    return coll->init();
-  }
-  static int deinit_plugin(st_plugin_int *plugin)
-  {
-    Plugin_function_collection *coll=
-      reinterpret_cast<Plugin_function_collection*>(plugin->plugin->info);
-    coll->deinit();
-    return 0;
-  }
-public:
-  Plugin_function_collection(int interface_version,
-                             const Native_func_registry_array &nfra)
-   :m_interface_version(interface_version),
-    m_native_func_registry_array(nfra)
-  {
-    bzero((void*) &m_hash, sizeof(m_hash));
-  }
-  Create_func *find_native_function_builder(THD *thd,
-                                            const LEX_CSTRING &name) const;
-};
diff --git a/sql/item_create.cc b/sql/item_create.cc
index 246850d9548..486f4fc591e 100644
--- a/sql/item_create.cc
+++ b/sql/item_create.cc
@@ -36,7 +36,6 @@
 #include "sql_time.h"
 #include "sql_type_geom.h"
 #include <mysql/plugin_function.h>
-#include <mysql/plugin_function_collection.h>
 
 
 extern "C" uchar*
@@ -49,80 +48,22 @@ get_native_fct_hash_key(const uchar *buff, size_t *length,
 }
 
 
-bool Plugin_function_collection::init()
+bool Native_func_registry_array::append_to_hash(HASH *hash) const
 {
-  DBUG_ENTER("Plugin_function_collection::init");
-  if (my_hash_init(&m_hash,
-                   system_charset_info,
-                   (ulong) m_native_func_registry_array.count(),
-                   0,
-                   0,
-                   (my_hash_get_key) get_native_fct_hash_key,
-                   NULL,  /* Nothing to free */
-                   MYF(0)))
-    DBUG_RETURN(true);
-
-  for (size_t i= 0; i < m_native_func_registry_array.count(); i++)
+  DBUG_ENTER("Native_func_registry_array::append_to_hash");
+  for (size_t i= 0; i < count(); i++)
   {
-    const Native_func_registry &func= m_native_func_registry_array.element(i);
+    const Native_func_registry &func= element(i);
     DBUG_ASSERT(func.builder != NULL);
-    if (my_hash_insert(&m_hash, (uchar*) &func))
+    if (my_hash_insert(hash, (uchar*) &func))
       DBUG_RETURN(true);
   }
-
   DBUG_RETURN(false);
 }
 
 
-Create_func *
-Plugin_function_collection::find_native_function_builder(THD *thd,
-                                                         const LEX_CSTRING &name)
-                                                         const
-{
-  const Native_func_registry *func;
-  func= (const Native_func_registry*) my_hash_search(&m_hash,
-                                                     (uchar*) name.str,
-                                                     name.length);
-  return func ? func->builder : NULL;
-}
-
-
-class Plugin_find_native_func_builder_param
-{
-  bool find_native_function_builder(THD *thd,
-                                    const Plugin_function_collection *pfc)
-  {
-    // plugin_foreach() will stop iterating when this function returns TRUE
-    return ((builder= pfc->find_native_function_builder(thd, name))) != NULL;
-  }
-  static my_bool find_in_plugin(THD *thd, plugin_ref plugin, void *data)
-  {
-    Plugin_find_native_func_builder_param *param=
-      reinterpret_cast<Plugin_find_native_func_builder_param*>(data);
-    const Plugin_function_collection *fc=
-      reinterpret_cast<Plugin_function_collection*>
-        (plugin_decl(plugin)->info);
-    return param->find_native_function_builder(thd, fc);
-  }
-public:
-  LEX_CSTRING name;
-  Create_func *builder;
-  Plugin_find_native_func_builder_param(const LEX_CSTRING &name_arg)
-   :name(name_arg), builder(NULL)
-  { }
-  Create_func *find(THD *thd)
-  {
-    if (!plugin_foreach(thd,
-                        Plugin_find_native_func_builder_param::find_in_plugin,
-                        MariaDB_FUNCTION_COLLECTION_PLUGIN, this))
-      return NULL;
-    return builder;
-  }
-};
-
-
 #ifdef HAVE_SPATIAL
-extern Plugin_function_collection plugin_function_collection_geometry;
+extern Native_func_registry_array native_func_registry_array_geom;
 #endif
 
 
@@ -5633,11 +5574,12 @@ static Native_func_registry func_array[] =
   { { STRING_WITH_LEN("WSREP_LAST_SEEN_GTID") }, BUILDER(Create_func_wsrep_last_seen_gtid)},
   { { STRING_WITH_LEN("WSREP_SYNC_WAIT_UPTO_GTID") }, BUILDER(Create_func_wsrep_sync_wait_upto)},
 #endif /* WITH_WSREP */
-  { { STRING_WITH_LEN("YEARWEEK") }, BUILDER(Create_func_year_week)},
-
-  { {0, 0}, NULL}
+  { { STRING_WITH_LEN("YEARWEEK") }, BUILDER(Create_func_year_week)}
 };
 
+Native_func_registry_array
+  native_func_registry_array(func_array, array_elements(func_array));
+
 static HASH native_functions_hash;
 
 /*
@@ -5649,10 +5591,13 @@ static HASH native_functions_hash;
 int item_create_init()
 {
   DBUG_ENTER("item_create_init");
-
+  size_t count= native_func_registry_array.count();
+#ifdef HAVE_SPATIAL
+  count+= native_func_registry_array_geom.count();
+#endif
   if (my_hash_init(& native_functions_hash,
                    system_charset_info,
-                   array_elements(func_array),
+                   (ulong) count,
                    0,
                    0,
                    (my_hash_get_key) get_native_fct_hash_key,
@@ -5660,17 +5605,33 @@ int item_create_init()
                    MYF(0)))
     DBUG_RETURN(1);
 
-  if (item_create_append(func_array))
+  if (native_func_registry_array.append_to_hash(&native_functions_hash))
     DBUG_RETURN(1);
 
 #ifdef HAVE_SPATIAL
-  if (plugin_function_collection_geometry.init())
+  if (native_func_registry_array_geom.append_to_hash(&native_functions_hash))
     DBUG_RETURN(1);
 #endif
 
+#ifndef DBUG_OFF
+  for (uint i=0 ; i < native_functions_hash.records ; i++)
+  {
+    Native_func_registry *func;
+    func= (Native_func_registry*) my_hash_element(& native_functions_hash, i);
+    DBUG_PRINT("info", ("native function: %s  length: %u",
+                        func->name.str, (uint) func->name.length));
+  }
+#endif
+
   DBUG_RETURN(0);
 }
 
+
+/*
+  This function is used (dangerously) by plugin/versioning/versioning.cc
+  TODO: MDEV-20842 Wrap SQL functions defined in
+        plugin/versioning/versioning.cc into MariaDB_FUNCTION_PLUGIN
+*/
 int item_create_append(Native_func_registry array[])
 {
   Native_func_registry *func;
@@ -5683,15 +5644,6 @@ int item_create_append(Native_func_registry array[])
       DBUG_RETURN(1);
   }
 
-#ifndef DBUG_OFF
-  for (uint i=0 ; i < native_functions_hash.records ; i++)
-  {
-    func= (Native_func_registry*) my_hash_element(& native_functions_hash, i);
-    DBUG_PRINT("info", ("native function: %s  length: %u",
-                        func->name.str, (uint) func->name.length));
-  }
-#endif
-
   DBUG_RETURN(0);
 }
 
@@ -5705,9 +5657,6 @@ void item_create_cleanup()
 {
   DBUG_ENTER("item_create_cleanup");
   my_hash_free(& native_functions_hash);
-#ifdef HAVE_SPATIAL
-  plugin_function_collection_geometry.deinit();
-#endif
   DBUG_VOID_RETURN;
 }
 
@@ -5746,16 +5695,7 @@ find_native_function_builder(THD *thd, const LEX_CSTRING *name)
   if ((builder= function_plugin_find_native_function_builder(thd, *name)))
     return builder;
 
-  if ((builder= Plugin_find_native_func_builder_param(*name).find(thd)))
-    return builder;
-
-#ifdef HAVE_SPATIAL
-  if (!builder)
-    builder= plugin_function_collection_geometry.
-               find_native_function_builder(thd, *name);
-#endif
-
-  return builder;
+  return NULL;
 }
 
 Create_qfunc *
diff --git a/sql/item_create.h b/sql/item_create.h
index 3cbf8a70181..c9bdb23dffe 100644
--- a/sql/item_create.h
+++ b/sql/item_create.h
@@ -315,5 +315,30 @@ Item *create_func_dyncol_get(THD *thd, Item *num, Item *str,
                              const char *c_len, const char *c_dec,
                              CHARSET_INFO *cs);
 Item *create_func_dyncol_json(THD *thd, Item *str);
+
+
+class Native_func_registry_array
+{
+  const Native_func_registry *m_elements;
+  size_t m_count;
+public:
+  Native_func_registry_array()
+   :m_elements(NULL),
+    m_count(0)
+  { }
+  Native_func_registry_array(const Native_func_registry *elements, size_t count)
+   :m_elements(elements),
+    m_count(count)
+  { }
+  const Native_func_registry& element(size_t i) const
+  {
+    DBUG_ASSERT(i < m_count);
+    return m_elements[i];
+  }
+  size_t count() const { return m_count; }
+  bool append_to_hash(HASH *hash) const;
+};
+
+
 #endif
 
diff --git a/sql/item_geofunc.cc b/sql/item_geofunc.cc
index 541edf6a3b5..c107c93d584 100644
--- a/sql/item_geofunc.cc
+++ b/sql/item_geofunc.cc
@@ -39,7 +39,7 @@
 #include <m_ctype.h>
 #include "opt_range.h"
 #include "item_geofunc.h"
-#include <mysql/plugin_function_collection.h>
+#include "item_create.h"
 
 
 bool Item_geometry_func::fix_length_and_dec()
@@ -3733,16 +3733,6 @@ Create_func_y Create_func_y::s_singleton;
 /*************************************************************************/
 
 
-class FHash: public HASH
-{
-public:
-  FHash()
-  {
-    bzero((HASH *) this, sizeof(HASH));
-  }
-};
-
-
 #define GEOM_BUILDER(F) & F::s_singleton
 
 
@@ -3907,10 +3897,8 @@ static Native_func_registry func_array_geom[] =
 };
 
 
-Plugin_function_collection
-  plugin_function_collection_geometry(
-    MariaDB_FUNCTION_COLLECTION_INTERFACE_VERSION,
-    Native_func_registry_array(func_array_geom,
-                               array_elements(func_array_geom)));
+Native_func_registry_array
+  native_func_registry_array_geom(func_array_geom,
+                                  array_elements(func_array_geom));
 
 #endif /*HAVE_SPATIAL*/
diff --git a/sql/sql_plugin.cc b/sql/sql_plugin.cc
index 2beb9fa0267..1ba8137acf5 100644
--- a/sql/sql_plugin.cc
+++ b/sql/sql_plugin.cc
@@ -40,7 +40,6 @@
 #include <mysql/plugin_encryption.h>
 #include <mysql/plugin_data_type.h>
 #include <mysql/plugin_function.h>
-#include <mysql/plugin_function_collection.h>
 #include "sql_plugin_compat.h"
 
 #ifdef HAVE_LINK_H
@@ -95,8 +94,7 @@ const LEX_CSTRING plugin_type_names[MYSQL_MAX_PLUGIN_TYPE_NUM]=
   { STRING_WITH_LEN("PASSWORD VALIDATION") },
   { STRING_WITH_LEN("ENCRYPTION") },
   { STRING_WITH_LEN("DATA TYPE") },
-  { STRING_WITH_LEN("FUNCTION") },
-  { STRING_WITH_LEN("FUNCTION COLLECTION") }
+  { STRING_WITH_LEN("FUNCTION") }
 };
 
 extern int initialize_schema_table(st_plugin_int *plugin);
@@ -117,16 +115,14 @@ plugin_type_init plugin_type_initialize[MYSQL_MAX_PLUGIN_TYPE_NUM]=
 {
   0, ha_initialize_handlerton, 0, 0,initialize_schema_table,
   initialize_audit_plugin, 0, 0, 0, initialize_encryption_plugin, 0,
-  0, // FUNCTION
-  Plugin_function_collection::init_plugin
+  0 // FUNCTION
 };
 
 plugin_type_init plugin_type_deinitialize[MYSQL_MAX_PLUGIN_TYPE_NUM]=
 {
   0, ha_finalize_handlerton, 0, 0, finalize_schema_table,
   finalize_audit_plugin, 0, 0, 0, finalize_encryption_plugin, 0,
-  0, // FUNCTION
-  Plugin_function_collection::deinit_plugin
+  0 // FUNCTION
 };
 
 /*
@@ -140,7 +136,6 @@ static int plugin_type_initialization_order[MYSQL_MAX_PLUGIN_TYPE_NUM]=
   MariaDB_ENCRYPTION_PLUGIN,
   MariaDB_DATA_TYPE_PLUGIN,
   MariaDB_FUNCTION_PLUGIN,
-  MariaDB_FUNCTION_COLLECTION_PLUGIN,
   MYSQL_STORAGE_ENGINE_PLUGIN,
   MYSQL_INFORMATION_SCHEMA_PLUGIN,
   MYSQL_FTPARSER_PLUGIN,
@@ -184,8 +179,7 @@ static int min_plugin_info_interface_version[MYSQL_MAX_PLUGIN_TYPE_NUM]=
   MariaDB_PASSWORD_VALIDATION_INTERFACE_VERSION,
   MariaDB_ENCRYPTION_INTERFACE_VERSION,
   MariaDB_DATA_TYPE_INTERFACE_VERSION,
-  MariaDB_FUNCTION_INTERFACE_VERSION,
-  MariaDB_FUNCTION_COLLECTION_INTERFACE_VERSION
+  MariaDB_FUNCTION_INTERFACE_VERSION
 };
 static int cur_plugin_info_interface_version[MYSQL_MAX_PLUGIN_TYPE_NUM]=
 {
@@ -200,8 +194,7 @@ static int cur_plugin_info_interface_version[MYSQL_MAX_PLUGIN_TYPE_NUM]=
   MariaDB_PASSWORD_VALIDATION_INTERFACE_VERSION,
   MariaDB_ENCRYPTION_INTERFACE_VERSION,
   MariaDB_DATA_TYPE_INTERFACE_VERSION,
-  MariaDB_FUNCTION_INTERFACE_VERSION,
-  MariaDB_FUNCTION_COLLECTION_INTERFACE_VERSION
+  MariaDB_FUNCTION_INTERFACE_VERSION
 };
 
 static struct