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Current File : /www/server/mysql/src/rapid/plugin/x/src/xpl_plugin.cc
/*
   Copyright (c) 2015, 2023, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, 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 02110-1301  USA
*/

#include <my_config.h>

#include <mysql/plugin.h>
#include <mysql_version.h>

#include "xpl_session.h"
#include "xpl_system_variables.h"
#include "xpl_server.h"
#include "xpl_performance_schema.h"
#include "mysqlx_version.h"
#include "xpl_log.h"

#include <stdio.h>                            // Solaris header file bug.
#include <limits>

#define BYTE(X)  (X)
#define KBYTE(X) ((X) * 1024)
#define MBYTE(X) ((X) * 1024 * 1024)
#define GBYTE(X) ((X) * 1024 * 1024 * 1024)

namespace
{

typedef void (*Xpl_status_variable_get)(THD *, st_mysql_show_var *, char *);

char *xpl_func_ptr(Xpl_status_variable_get callback)
{
  union
  {
    char *ptr;
    Xpl_status_variable_get callback;
  } ptr_cast;

  ptr_cast.callback = callback;

  return ptr_cast.ptr;
}

void exit_hook()
{
  google::protobuf::ShutdownProtobufLibrary();
}

} // namespace


/*
  Start the plugin: start webservers

  SYNOPSIS
    xpl_plugin_init()
    p plugin handle

  RETURN
     0  success
     1  error
 */
int xpl_plugin_init(MYSQL_PLUGIN p)
{
  static bool atexit_installed = false;
  if (!atexit_installed)
  {
    atexit_installed = true;
    atexit(exit_hook);
  }

  xpl::Plugin_system_variables::clean_callbacks();

  xpl_init_performance_schema();

  return xpl::Server::main(p);
}

/*
  Shutdown the plugin: stop webservers

  SYNOPSIS
    xpl_plugin_deinit()
    p plugin handle

  RETURN
     0  success
     1  error
 */
int xpl_plugin_deinit(MYSQL_PLUGIN p)
{
  return xpl::Server::exit(p);
}


static struct st_mysql_daemon xpl_plugin_info ={
  MYSQL_DAEMON_INTERFACE_VERSION
};


static MYSQL_SYSVAR_UINT(port, xpl::Plugin_system_variables::port,
    PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
    "Port on which X Plugin is going to accept incoming connections.",
    NULL, NULL, MYSQLX_TCP_PORT, 1, std::numeric_limits<uint16>::max(), 0);

static MYSQL_SYSVAR_INT(max_connections, xpl::Plugin_system_variables::max_connections,
    PLUGIN_VAR_OPCMDARG,
    "Maximum number of concurrent X protocol connections. Actual number of connections is also affected by the general max_connections.",
    NULL, NULL, 100, 1, std::numeric_limits<unsigned short>::max(), 0);

static MYSQL_SYSVAR_UINT(min_worker_threads, xpl::Plugin_system_variables::min_worker_threads,
    PLUGIN_VAR_OPCMDARG,
    "Minimal number of worker threads.",
    NULL, &xpl::Plugin_system_variables::update_func<unsigned int>, 2U, 1, 100, 0);

static MYSQL_SYSVAR_UINT(idle_worker_thread_timeout, xpl::Plugin_system_variables::idle_worker_thread_timeout,
    PLUGIN_VAR_OPCMDARG,
    "Time after which an idle worker thread is terminated (in seconds).",
    NULL, &xpl::Plugin_system_variables::update_func<unsigned int>, 60, 0, 60 * 60, 0);

static MYSQL_SYSVAR_UINT(max_allowed_packet, xpl::Plugin_system_variables::max_allowed_packet,
    PLUGIN_VAR_OPCMDARG,
    "Size of largest message that client is going to handle.",
    NULL, &xpl::Plugin_system_variables::update_func<unsigned int>, MBYTE(1), BYTE(512), GBYTE(1), 0);

static MYSQL_SYSVAR_UINT(connect_timeout, xpl::Plugin_system_variables::connect_timeout,
    PLUGIN_VAR_OPCMDARG,
    "Maximum allowed waiting time for connection to setup a session (in seconds).",
    NULL, &xpl::Plugin_system_variables::update_func<unsigned int>, 30, 1, 1000000000, 0);

static MYSQL_SYSVAR_STR(ssl_key, xpl::Plugin_system_variables::ssl_config.ssl_key,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_MEMALLOC,
      "X509 key in PEM format.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(ssl_ca, xpl::Plugin_system_variables::ssl_config.ssl_ca,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_MEMALLOC,
      "CA file in PEM format.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(ssl_capath, xpl::Plugin_system_variables::ssl_config.ssl_capath,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_MEMALLOC,
      "CA directory.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(ssl_cert, xpl::Plugin_system_variables::ssl_config.ssl_cert,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_MEMALLOC,
      "X509 cert in PEM format.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(ssl_cipher, xpl::Plugin_system_variables::ssl_config.ssl_cipher,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_MEMALLOC,
      "SSL cipher to use.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(ssl_crl, xpl::Plugin_system_variables::ssl_config.ssl_crl,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_MEMALLOC,
      "Certificate revocation list.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(ssl_crlpath, xpl::Plugin_system_variables::ssl_config.ssl_crlpath,
      PLUGIN_VAR_READONLY,
      "Certificate revocation list path.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(socket, xpl::Plugin_system_variables::socket,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_MEMALLOC,
      "X Plugin's unix socket for local connection.", NULL, NULL, NULL);

static MYSQL_SYSVAR_STR(bind_address, xpl::Plugin_system_variables::bind_address,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_MEMALLOC,
      "Address to which X Plugin should bind the TCP socket.", NULL, NULL, "*");

static MYSQL_SYSVAR_UINT(port_open_timeout, xpl::Plugin_system_variables::port_open_timeout,
      PLUGIN_VAR_READONLY | PLUGIN_VAR_OPCMDARG ,
      "How long X Plugin is going to retry binding of server socket (in case of failure)",
      NULL, &xpl::Plugin_system_variables::update_func<unsigned int>, 0, 0, 120, 0);

static struct st_mysql_sys_var* xpl_plugin_system_variables[]= {
  MYSQL_SYSVAR(port),
  MYSQL_SYSVAR(max_connections),
  MYSQL_SYSVAR(min_worker_threads),
  MYSQL_SYSVAR(idle_worker_thread_timeout),
  MYSQL_SYSVAR(max_allowed_packet),
  MYSQL_SYSVAR(connect_timeout),
  MYSQL_SYSVAR(ssl_key),
  MYSQL_SYSVAR(ssl_ca),
  MYSQL_SYSVAR(ssl_capath),
  MYSQL_SYSVAR(ssl_cert),
  MYSQL_SYSVAR(ssl_cipher),
  MYSQL_SYSVAR(ssl_crl),
  MYSQL_SYSVAR(ssl_crlpath),
  MYSQL_SYSVAR(socket),
  MYSQL_SYSVAR(bind_address),
  MYSQL_SYSVAR(port_open_timeout),
  NULL
};

#define SESSION_STATUS_VARIABLE_ENTRY_LONGLONG(NAME, METHOD)                 \
    { MYSQLX_STATUS_VARIABLE_PREFIX(NAME),                                   \
      xpl_func_ptr(xpl::Server::common_status_variable<long long, &METHOD>), \
      SHOW_FUNC,                                                             \
      SHOW_SCOPE_GLOBAL }

#define GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG(NAME, METHOD)                         \
    { MYSQLX_STATUS_VARIABLE_PREFIX(NAME),                                          \
      xpl_func_ptr(xpl::Server::global_status_variable_server<long long, &METHOD>), \
      SHOW_FUNC,                                                                    \
      SHOW_SCOPE_GLOBAL }

#define GLOBAL_SSL_STATUS_VARIABLE_ENTRY(NAME, TYPE, METHOD)            \
    { MYSQLX_STATUS_VARIABLE_PREFIX(NAME),                              \
      xpl_func_ptr(xpl::Server::global_status_variable<TYPE, &METHOD>), \
      SHOW_FUNC,                                                        \
      SHOW_SCOPE_GLOBAL }

#define SESSION_SSL_STATUS_VARIABLE_ENTRY(NAME, TYPE, METHOD)            \
    { MYSQLX_STATUS_VARIABLE_PREFIX(NAME),                               \
      xpl_func_ptr(xpl::Server::session_status_variable<TYPE, &METHOD>), \
      SHOW_FUNC,                                                         \
      SHOW_SCOPE_GLOBAL }

#define SESSION_SSL_STATUS_VARIABLE_ENTRY_ARRAY(NAME, METHOD)      \
    { MYSQLX_STATUS_VARIABLE_PREFIX(NAME),                         \
      xpl_func_ptr(xpl::Server::session_status_variable<&METHOD>), \
      SHOW_FUNC,                                                   \
      SHOW_SCOPE_GLOBAL }

#define GLOBAL_CUSTOM_STATUS_VARIABLE_ENTRY(NAME, TYPE, METHOD)                            \
    { MYSQLX_STATUS_VARIABLE_PREFIX(NAME),                                                 \
      xpl_func_ptr(xpl::Server::global_status_variable_server_with_return<TYPE, &METHOD>), \
      SHOW_FUNC,                                                                           \
      SHOW_SCOPE_GLOBAL }

static struct st_mysql_show_var xpl_plugin_status[]=
{
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_execute_sql",        xpl::Common_status_variables::m_stmt_execute_sql),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_execute_xplugin",    xpl::Common_status_variables::m_stmt_execute_xplugin),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_execute_mysqlx",     xpl::Common_status_variables::m_stmt_execute_mysqlx),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_update",             xpl::Common_status_variables::m_crud_update),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_delete",             xpl::Common_status_variables::m_crud_delete),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_find",               xpl::Common_status_variables::m_crud_find),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_insert",             xpl::Common_status_variables::m_crud_insert),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_create_view",        xpl::Common_status_variables::m_crud_create_view),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_modify_view",        xpl::Common_status_variables::m_crud_modify_view),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("crud_drop_view",          xpl::Common_status_variables::m_crud_drop_view),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("expect_open",             xpl::Common_status_variables::m_expect_open),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("expect_close",            xpl::Common_status_variables::m_expect_close),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_create_collection",       xpl::Common_status_variables::m_stmt_create_collection),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_create_collection_index", xpl::Common_status_variables::m_stmt_create_collection_index),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_drop_collection",         xpl::Common_status_variables::m_stmt_drop_collection),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_ensure_collection",       xpl::Common_status_variables::m_stmt_ensure_collection),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_drop_collection_index",   xpl::Common_status_variables::m_stmt_drop_collection_index),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_list_objects",       xpl::Common_status_variables::m_stmt_list_objects),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_enable_notices",     xpl::Common_status_variables::m_stmt_enable_notices),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_disable_notices",    xpl::Common_status_variables::m_stmt_disable_notices),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_list_notices",       xpl::Common_status_variables::m_stmt_list_notices),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_list_clients",       xpl::Common_status_variables::m_stmt_list_clients),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_kill_client",        xpl::Common_status_variables::m_stmt_kill_client),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("stmt_ping",               xpl::Common_status_variables::m_stmt_ping),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("bytes_sent",              xpl::Common_status_variables::m_bytes_sent),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("bytes_received",          xpl::Common_status_variables::m_bytes_received),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("errors_sent",             xpl::Common_status_variables::m_errors_sent),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("rows_sent",               xpl::Common_status_variables::m_rows_sent),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("notice_warning_sent",     xpl::Common_status_variables::m_notice_warning_sent),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("notice_other_sent",       xpl::Common_status_variables::m_notice_other_sent),
  SESSION_STATUS_VARIABLE_ENTRY_LONGLONG("errors_unknown_message_type",    xpl::Common_status_variables::m_errors_unknown_message_type),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("sessions",                 xpl::Global_status_variables::m_sessions_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("sessions_closed",          xpl::Global_status_variables::m_closed_sessions_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("sessions_fatal_error",     xpl::Global_status_variables::m_sessions_fatal_errors_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("init_error",               xpl::Global_status_variables::m_init_errors_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("sessions_accepted",        xpl::Global_status_variables::m_accepted_sessions_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("sessions_rejected",        xpl::Global_status_variables::m_rejected_sessions_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("sessions_killed",          xpl::Global_status_variables::m_killed_sessions_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("connections_closed",       xpl::Global_status_variables::m_closed_connections_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("connections_accepted",     xpl::Global_status_variables::m_accepted_connections_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("connections_rejected",     xpl::Global_status_variables::m_rejected_connections_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("connection_accept_errors", xpl::Global_status_variables::m_connection_accept_errors_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("connection_errors",        xpl::Global_status_variables::m_connection_errors_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("worker_threads",           xpl::Global_status_variables::m_worker_thread_count),
  GLOBAL_STATUS_VARIABLE_ENTRY_LONGLONG("worker_threads_active",    xpl::Global_status_variables::m_active_worker_thread_count),

  SESSION_SSL_STATUS_VARIABLE_ENTRY_ARRAY("ssl_cipher_list", xpl::Client::get_status_ssl_cipher_list),
  SESSION_SSL_STATUS_VARIABLE_ENTRY("ssl_active",       bool,        ngs::IOptions_session::active_tls),
  SESSION_SSL_STATUS_VARIABLE_ENTRY("ssl_cipher",       std::string, ngs::IOptions_session::ssl_cipher),
  SESSION_SSL_STATUS_VARIABLE_ENTRY("ssl_version",      std::string, ngs::IOptions_session::ssl_version),
  SESSION_SSL_STATUS_VARIABLE_ENTRY("ssl_verify_depth", long,        ngs::IOptions_session::ssl_verify_depth),
  SESSION_SSL_STATUS_VARIABLE_ENTRY("ssl_verify_mode",  long,        ngs::IOptions_session::ssl_verify_mode),
  GLOBAL_SSL_STATUS_VARIABLE_ENTRY("ssl_ctx_verify_depth",  long,        ngs::IOptions_context::ssl_ctx_verify_depth),
  GLOBAL_SSL_STATUS_VARIABLE_ENTRY("ssl_ctx_verify_mode",   long,        ngs::IOptions_context::ssl_ctx_verify_mode),
  GLOBAL_SSL_STATUS_VARIABLE_ENTRY("ssl_finished_accepts",  long,        ngs::IOptions_context::ssl_sess_accept_good),
  GLOBAL_SSL_STATUS_VARIABLE_ENTRY("ssl_accepts",           long,        ngs::IOptions_context::ssl_sess_accept),
  GLOBAL_SSL_STATUS_VARIABLE_ENTRY("ssl_server_not_after",  std::string, ngs::IOptions_context::ssl_server_not_after),
  GLOBAL_SSL_STATUS_VARIABLE_ENTRY("ssl_server_not_before", std::string, ngs::IOptions_context::ssl_server_not_before),

  GLOBAL_CUSTOM_STATUS_VARIABLE_ENTRY("socket",  std::string, xpl::Server::get_socket_file),
  GLOBAL_CUSTOM_STATUS_VARIABLE_ENTRY("port",    std::string, xpl::Server::get_tcp_port),
  GLOBAL_CUSTOM_STATUS_VARIABLE_ENTRY("address", std::string, xpl::Server::get_tcp_bind_address),

  { NULL, NULL, SHOW_BOOL, SHOW_SCOPE_GLOBAL}
};


mysql_declare_plugin(xpl)
{
  MYSQL_DAEMON_PLUGIN,
  &xpl_plugin_info,
  MYSQLX_PLUGIN_NAME,
  "Oracle Corp",
  "X Plugin for MySQL",
  PLUGIN_LICENSE_GPL,
  xpl_plugin_init,              /* init       */
  xpl_plugin_deinit,            /* deinit     */
  MYSQLX_PLUGIN_VERSION,        /* version    */
  xpl_plugin_status,            /* status var */
  xpl_plugin_system_variables,  /* system var */
  NULL,                         /* options    */
  0                             /* flags      */
}
mysql_declare_plugin_end;

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