mirror of
https://github.com/MariaDB/server.git
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2412 lines
65 KiB
C++
2412 lines
65 KiB
C++
/* Copyright 2008-2022 Codership Oy <http://www.codership.com>
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Copyright (c) 2008, 2022, MariaDB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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#include "mariadb.h"
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#include "wsrep_sst.h"
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#include <inttypes.h>
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#include <ctype.h>
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#include <mysqld.h>
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#include <m_ctype.h>
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#include <strfunc.h>
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#include <sql_base.h>
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#include <sql_class.h>
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#include <set_var.h>
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#include <sql_acl.h>
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#include <sql_reload.h>
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#include <sql_parse.h>
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#include "wsrep_priv.h"
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#include "wsrep_utils.h"
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#include "wsrep_xid.h"
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#include "wsrep_thd.h"
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#include "wsrep_server_state.h"
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#include <cstdio>
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#include <cstdlib>
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#include "debug_sync.h"
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#include "my_rnd.h"
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#include <my_service_manager.h>
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static char wsrep_defaults_file[FN_REFLEN * 2 + 10 + 30 +
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sizeof(WSREP_SST_OPT_CONF) +
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sizeof(WSREP_SST_OPT_CONF_SUFFIX) +
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sizeof(WSREP_SST_OPT_CONF_EXTRA)]= {0};
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const char* wsrep_sst_method = WSREP_SST_DEFAULT;
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const char* wsrep_sst_receive_address= WSREP_SST_ADDRESS_AUTO;
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const char* wsrep_sst_donor = "";
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const char* wsrep_sst_auth = NULL;
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// container for real auth string
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static const char* sst_auth_real = NULL;
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my_bool wsrep_sst_donor_rejects_queries= FALSE;
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#define WSREP_EXTEND_TIMEOUT_INTERVAL 60
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#define WSREP_TIMEDWAIT_SECONDS 30
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bool sst_joiner_completed = false;
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bool sst_donor_completed = false;
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struct sst_auth
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{
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std::string name_;
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std::string pswd_;
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std::string remote_name_;
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std::string remote_pswd_;
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};
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struct sst_thread_arg
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{
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const char* method_;
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const char* cmd;
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const sst_auth& auth_;
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char** env;
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char* ret_str;
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int err;
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mysql_mutex_t lock;
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mysql_cond_t cond;
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sst_thread_arg (const char* m, const char* c, const sst_auth& auth, char** e)
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: method_(m), cmd(c), auth_(auth), env(e), ret_str(0), err(-1)
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{
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mysql_mutex_init(key_LOCK_wsrep_sst_thread, &lock, MY_MUTEX_INIT_FAST);
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mysql_cond_init(key_COND_wsrep_sst_thread, &cond, NULL);
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}
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~sst_thread_arg()
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{
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mysql_cond_destroy (&cond);
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mysql_mutex_unlock (&lock);
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mysql_mutex_destroy (&lock);
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}
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};
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static void wsrep_donor_monitor_end(void)
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{
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mysql_mutex_lock(&LOCK_wsrep_donor_monitor);
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sst_donor_completed= true;
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mysql_cond_signal(&COND_wsrep_donor_monitor);
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mysql_mutex_unlock(&LOCK_wsrep_donor_monitor);
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}
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static void wsrep_joiner_monitor_end(void)
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{
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mysql_mutex_lock(&LOCK_wsrep_joiner_monitor);
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sst_joiner_completed= true;
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mysql_cond_signal(&COND_wsrep_joiner_monitor);
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mysql_mutex_unlock(&LOCK_wsrep_joiner_monitor);
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}
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static void* wsrep_sst_donor_monitor_thread(void *arg __attribute__((unused)))
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{
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int ret= 0;
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unsigned long time_waited= 0;
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mysql_mutex_lock(&LOCK_wsrep_donor_monitor);
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WSREP_INFO("Donor monitor thread started to monitor");
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wsp::thd thd;
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while (!sst_donor_completed)
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{
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timespec ts;
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set_timespec(ts, WSREP_TIMEDWAIT_SECONDS);
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time_t start_time= time(NULL);
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ret= mysql_cond_timedwait(&COND_wsrep_donor_monitor, &LOCK_wsrep_donor_monitor, &ts);
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time_t end_time= time(NULL);
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time_waited+= difftime(end_time, start_time);
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if (ret == ETIMEDOUT && !sst_donor_completed)
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{
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WSREP_DEBUG("Donor waited %lu sec, extending systemd startup timeout as SST"
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"is not completed",
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time_waited);
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service_manager_extend_timeout(WSREP_EXTEND_TIMEOUT_INTERVAL,
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"WSREP state transfer (role donor) ongoing...");
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}
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}
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WSREP_INFO("Donor monitor thread ended with total time %lu sec", time_waited);
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mysql_mutex_unlock(&LOCK_wsrep_donor_monitor);
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sd_notify(0, "STATUS=WSREP state transfer (role donor) completed.\n");
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return NULL;
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}
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static void* wsrep_sst_joiner_monitor_thread(void *arg __attribute__((unused)))
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{
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int ret= 0;
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unsigned long time_waited= 0;
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mysql_mutex_lock(&LOCK_wsrep_joiner_monitor);
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WSREP_INFO("Joiner monitor thread started to monitor");
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wsp::thd thd;
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while (!sst_joiner_completed)
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{
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timespec ts;
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set_timespec(ts, WSREP_TIMEDWAIT_SECONDS);
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time_t start_time= time(NULL);
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ret= mysql_cond_timedwait(&COND_wsrep_joiner_monitor, &LOCK_wsrep_joiner_monitor, &ts);
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time_t end_time= time(NULL);
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time_waited+= difftime(end_time, start_time);
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if (ret == ETIMEDOUT && !sst_joiner_completed)
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{
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WSREP_DEBUG("Joiner waited %lu sec, extending systemd startup timeout as SST"
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"is not completed",
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time_waited);
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service_manager_extend_timeout(WSREP_EXTEND_TIMEOUT_INTERVAL,
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"WSREP state transfer (role joiner) ongoing...");
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}
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}
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WSREP_INFO("Joiner monitor thread ended with total time %lu sec", time_waited);
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mysql_mutex_unlock(&LOCK_wsrep_joiner_monitor);
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sd_notify(0, "STATUS=WSREP state transfer (role joiner) completed.\n");
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return NULL;
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}
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/* return true if character can be a part of a filename */
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static bool filename_char(int const c)
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{
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return isalnum(c) || (c == '-') || (c == '_') || (c == '.');
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}
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/* return true if character can be a part of an address string */
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static bool address_char(int const c)
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{
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return filename_char(c) ||
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(c == ':') || (c == '[') || (c == ']') || (c == '/');
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}
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static bool check_request_str(const char* const str,
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bool (*check) (int c),
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bool log_warn = true)
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{
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for (size_t i(0); str[i] != '\0'; ++i)
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{
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if (!check(str[i]))
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{
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if (log_warn) WSREP_WARN("Illegal character in state transfer request: %i (%c).",
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str[i], str[i]);
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return true;
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}
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}
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return false;
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}
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bool wsrep_sst_method_check (sys_var *self, THD* thd, set_var* var)
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{
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if ((! var->save_result.string_value.str) ||
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(var->save_result.string_value.length == 0 ))
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{
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my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), var->var->name.str,
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var->save_result.string_value.str ?
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var->save_result.string_value.str : "NULL");
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return 1;
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}
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/* check also that method name is alphanumeric string */
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if (check_request_str(var->save_result.string_value.str,
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filename_char, false))
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{
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my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), var->var->name.str,
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var->save_result.string_value.str ?
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var->save_result.string_value.str : "NULL");
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return 1;
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}
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return 0;
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}
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static const char* data_home_dir;
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void wsrep_set_data_home_dir(const char *data_dir)
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{
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data_home_dir= (data_dir && *data_dir) ? data_dir : NULL;
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}
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static void make_wsrep_defaults_file()
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{
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if (!wsrep_defaults_file[0])
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{
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char *ptr= wsrep_defaults_file;
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char *end= ptr + sizeof(wsrep_defaults_file);
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if (my_defaults_file)
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ptr= strxnmov(ptr, end - ptr,
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WSREP_SST_OPT_CONF, " '", my_defaults_file, "' ", NULL);
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if (my_defaults_extra_file)
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ptr= strxnmov(ptr, end - ptr,
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WSREP_SST_OPT_CONF_EXTRA, " '", my_defaults_extra_file, "' ", NULL);
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if (my_defaults_group_suffix)
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ptr= strxnmov(ptr, end - ptr,
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WSREP_SST_OPT_CONF_SUFFIX, " '", my_defaults_group_suffix, "' ", NULL);
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}
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}
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bool wsrep_sst_receive_address_check (sys_var *self, THD* thd, set_var* var)
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{
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if ((! var->save_result.string_value.str) ||
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(var->save_result.string_value.length > (FN_REFLEN - 1))) // safety
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{
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goto err;
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}
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return 0;
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err:
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my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), var->var->name.str,
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var->save_result.string_value.str ?
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var->save_result.string_value.str : "NULL");
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return 1;
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}
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bool wsrep_sst_receive_address_update (sys_var *self, THD* thd,
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enum_var_type type)
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{
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return 0;
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}
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bool wsrep_sst_auth_check (sys_var *self, THD* thd, set_var* var)
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{
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return 0;
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}
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void wsrep_sst_auth_free()
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{
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if (wsrep_sst_auth) { my_free(const_cast<char *>(wsrep_sst_auth)); }
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if (sst_auth_real) { my_free(const_cast<char *>(sst_auth_real)); }
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wsrep_sst_auth= NULL;
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sst_auth_real= NULL;
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}
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bool wsrep_sst_auth_set (const char* value)
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{
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static const char* const auth_mask("********");
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const char* v= NULL;
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if (value && *value != '\0') // empty string means unset
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{
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// save new value
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v= my_strdup(PSI_INSTRUMENT_ME, value, MYF(0));
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if (!v) return 1;
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}
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// cleanup old values
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wsrep_sst_auth_free();
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if (v)
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{
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// mask wsrep_sst_auth
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wsrep_sst_auth = my_strdup(PSI_INSTRUMENT_ME, auth_mask, MYF(0));
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// set sst_auth_real to actual value
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sst_auth_real= v;
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}
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return 0;
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}
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bool wsrep_sst_auth_update (sys_var *self, THD* thd, enum_var_type type)
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{
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return wsrep_sst_auth_set(wsrep_sst_auth);
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}
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bool wsrep_sst_donor_check (sys_var *self, THD* thd, set_var* var)
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{
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if ((! var->save_result.string_value.str) ||
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(var->save_result.string_value.length > (FN_REFLEN -1))) // safety
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{
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my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), var->var->name.str,
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var->save_result.string_value.str ?
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var->save_result.string_value.str : "NULL");
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return 1;
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}
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return 0;
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}
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bool wsrep_sst_donor_update (sys_var *self, THD* thd, enum_var_type type)
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{
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return 0;
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}
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bool wsrep_before_SE()
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{
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return (wsrep_provider
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&& *wsrep_provider
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&& strcmp (wsrep_provider, WSREP_NONE)
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&& strcmp (wsrep_sst_method, WSREP_SST_SKIP)
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&& strcmp (wsrep_sst_method, WSREP_SST_MYSQLDUMP));
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}
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// Signal end of SST
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static bool wsrep_sst_complete (THD* thd,
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int const rcode,
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wsrep::gtid const sst_gtid)
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{
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Wsrep_client_service client_service(thd, thd->wsrep_cs());
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Wsrep_server_state& server_state= Wsrep_server_state::instance();
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enum wsrep::server_state::state state= server_state.state();
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bool failed= false;
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char start_pos_buf[FN_REFLEN];
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ssize_t len= wsrep::print_to_c_str(sst_gtid, start_pos_buf, FN_REFLEN-1);
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start_pos_buf[len]='\0';
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// Do not call sst_received if we are not in joiner or
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// initialized state on server. This is because it
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// assumes we are on those states. Give error if we are
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// in incorrect state.
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if ((state == Wsrep_server_state::s_joiner ||
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state == Wsrep_server_state::s_initialized))
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{
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if (Wsrep_server_state::instance().sst_received(client_service, rcode))
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{
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failed= true;
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}
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else
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{
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WSREP_INFO("SST succeeded for position %s", start_pos_buf);
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}
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}
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else
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{
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WSREP_ERROR("SST failed for position %s initialized %d server_state %s",
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start_pos_buf,
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server_state.is_initialized(),
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wsrep::to_c_string(state));
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failed= true;
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}
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wsrep_joiner_monitor_end();
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return failed;
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}
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/*
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If wsrep provider is loaded, inform that the new state snapshot
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has been received. Also update the local checkpoint.
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@param thd [IN]
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@param uuid [IN] Initial state UUID
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@param seqno [IN] Initial state sequence number
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@param state [IN] Always NULL, also ignored by wsrep provider (?)
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@param state_len [IN] Always 0, also ignored by wsrep provider (?)
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@return true when successful, false if error
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*/
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bool wsrep_sst_received (THD* thd,
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const wsrep_uuid_t& uuid,
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wsrep_seqno_t const seqno,
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const void* const state,
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size_t const state_len)
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{
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bool error= false;
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/*
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To keep track of whether the local uuid:seqno should be updated. Also, note
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that local state (uuid:seqno) is updated/checkpointed only after we get an
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OK from wsrep provider. By doing so, the values remain consistent across
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the server & wsrep provider.
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*/
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/*
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TODO: Handle backwards compatibility. WSREP API v25 does not have
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wsrep schema.
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*/
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/*
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Logical SST methods (mysqldump etc) don't update InnoDB sys header.
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Reset the SE checkpoint before recovering view in order to avoid
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sanity check failure.
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*/
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wsrep::gtid const sst_gtid(wsrep::id(uuid.data, sizeof(uuid.data)),
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wsrep::seqno(seqno));
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if (!wsrep_before_SE()) {
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wsrep_set_SE_checkpoint(wsrep::gtid::undefined(), wsrep_gtid_server.undefined());
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wsrep_set_SE_checkpoint(sst_gtid, wsrep_gtid_server.gtid());
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}
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wsrep_verify_SE_checkpoint(uuid, seqno);
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/*
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Both wsrep_init_SR() and wsrep_recover_view() may use
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wsrep thread pool. Restore original thd context before returning.
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*/
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if (thd) {
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wsrep_store_threadvars(thd);
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}
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else {
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set_current_thd(nullptr);
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}
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/* During sst WSREP(thd) is not yet set for joiner. */
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if (WSREP_ON)
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{
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int const rcode(seqno < 0 ? seqno : 0);
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error= wsrep_sst_complete(thd, rcode, sst_gtid);
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}
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return error;
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}
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static int sst_scan_uuid_seqno (const char* str,
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wsrep_uuid_t* uuid, wsrep_seqno_t* seqno)
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{
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int offt= wsrep_uuid_scan (str, strlen(str), uuid);
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errno= 0; /* Reset the errno */
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if (offt > 0 && strlen(str) > (unsigned int)offt && ':' == str[offt])
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{
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*seqno= strtoll (str + offt + 1, NULL, 10);
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if (*seqno != LLONG_MAX || errno != ERANGE)
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{
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return 0;
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}
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}
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WSREP_ERROR("Failed to parse uuid:seqno pair: '%s'", str);
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return -EINVAL;
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}
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// get rid of trailing \n
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static char* my_fgets (char* buf, size_t buf_len, FILE* stream)
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{
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char* ret= fgets (buf, buf_len, stream);
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if (ret)
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{
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size_t len= strlen(ret);
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if (len > 0 && ret[len - 1] == '\n') ret[len - 1]= '\0';
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}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
Generate "name 'value'" string.
|
|
*/
|
|
static char* generate_name_value(const char* name, const char* value)
|
|
{
|
|
size_t name_len= strlen(name);
|
|
size_t value_len= strlen(value);
|
|
char* buf=
|
|
(char*) my_malloc(PSI_INSTRUMENT_ME, (name_len + value_len + 5), MYF(0));
|
|
if (buf)
|
|
{
|
|
char* ref= buf;
|
|
*ref++ = ' ';
|
|
memcpy(ref, name, name_len * sizeof(char));
|
|
ref += name_len;
|
|
*ref++ = ' ';
|
|
*ref++ = '\'';
|
|
memcpy(ref, value, value_len * sizeof(char));
|
|
ref += value_len;
|
|
*ref++ = '\'';
|
|
*ref = 0;
|
|
}
|
|
return buf;
|
|
}
|
|
/*
|
|
Generate binlog option string for sst_donate_other(), sst_prepare_other().
|
|
|
|
Returns zero on success, negative error code otherwise.
|
|
|
|
String containing binlog name is stored in param ret if binlog is enabled
|
|
and GTID mode is on, otherwise empty string. Returned string should be
|
|
freed with my_free().
|
|
*/
|
|
static int generate_binlog_opt_val(char** ret)
|
|
{
|
|
DBUG_ASSERT(ret);
|
|
*ret= NULL;
|
|
if (opt_bin_log)
|
|
{
|
|
assert(opt_bin_logname);
|
|
*ret= strcmp(opt_bin_logname, "0") ?
|
|
generate_name_value(WSREP_SST_OPT_BINLOG,
|
|
opt_bin_logname) :
|
|
my_strdup(PSI_INSTRUMENT_ME, "", MYF(0));
|
|
}
|
|
else
|
|
{
|
|
*ret= my_strdup(PSI_INSTRUMENT_ME, "", MYF(0));
|
|
}
|
|
if (!*ret) return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
static int generate_binlog_index_opt_val(char** ret)
|
|
{
|
|
DBUG_ASSERT(ret);
|
|
*ret= NULL;
|
|
if (opt_binlog_index_name)
|
|
{
|
|
*ret= strcmp(opt_binlog_index_name, "0") ?
|
|
generate_name_value(WSREP_SST_OPT_BINLOG_INDEX,
|
|
opt_binlog_index_name) :
|
|
my_strdup(PSI_INSTRUMENT_ME, "", MYF(0));
|
|
}
|
|
else
|
|
{
|
|
*ret= my_strdup(PSI_INSTRUMENT_ME, "", MYF(0));
|
|
}
|
|
if (!*ret) return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
// report progress event
|
|
static void sst_report_progress(int const from,
|
|
long long const total_prev,
|
|
long long const total,
|
|
long long const complete)
|
|
{
|
|
static char buf[128] = { '\0', };
|
|
static size_t const buf_len= sizeof(buf) - 1;
|
|
snprintf(buf, buf_len,
|
|
"{ \"from\": %d, \"to\": %d, \"total\": %lld, \"done\": %lld, "
|
|
"\"indefinite\": -1 }",
|
|
from, WSREP_MEMBER_JOINED, total_prev + total, total_prev +complete);
|
|
WSREP_DEBUG("REPORTING SST PROGRESS: '%s'", buf);
|
|
}
|
|
|
|
// process "complete" event from SST script feedback
|
|
static void sst_handle_complete(const char* const input,
|
|
long long const total_prev,
|
|
long long* total,
|
|
long long* complete,
|
|
int const from)
|
|
{
|
|
long long x;
|
|
int n= sscanf(input, " %lld", &x);
|
|
if (n > 0 && x > *complete)
|
|
{
|
|
*complete= x;
|
|
if (*complete > *total) *total= *complete;
|
|
sst_report_progress(from, total_prev, *total, *complete);
|
|
}
|
|
}
|
|
|
|
// process "total" event from SST script feedback
|
|
static void sst_handle_total(const char* const input,
|
|
long long* total_prev,
|
|
long long* total,
|
|
long long* complete,
|
|
int const from)
|
|
{
|
|
long long x;
|
|
int n= sscanf(input, " %lld", &x);
|
|
if (n > 0)
|
|
{
|
|
// new stage starts, update total_prev
|
|
*total_prev+= *total;
|
|
*total= x;
|
|
*complete= 0;
|
|
sst_report_progress(from, *total_prev, *total, *complete);
|
|
}
|
|
}
|
|
|
|
struct sst_thread_init
|
|
{
|
|
sst_thread_init(const char* const errmsg, bool const abrt)
|
|
{
|
|
if (my_thread_init()) {
|
|
WSREP_ERROR("%s%s", errmsg, abrt ? " Aborting." : "");
|
|
if (abrt) unireg_abort(1);
|
|
}
|
|
}
|
|
~sst_thread_init()
|
|
{
|
|
my_thread_end();
|
|
}
|
|
};
|
|
|
|
static void* sst_joiner_thread (void* a)
|
|
{
|
|
sst_thread_arg* arg= (sst_thread_arg*) a;
|
|
int err= 1;
|
|
|
|
{
|
|
static const char magic[]= "ready";
|
|
static const size_t magic_len= sizeof(magic) - 1;
|
|
const size_t out_len= 512;
|
|
char out[out_len];
|
|
|
|
WSREP_INFO("Running: '%s'", arg->cmd);
|
|
|
|
wsp::process proc (arg->cmd, "r", arg->env);
|
|
|
|
if (proc.from() && !proc.error())
|
|
{
|
|
const char* tmp= my_fgets (out, out_len, proc.from());
|
|
|
|
if (!tmp || strlen(tmp) < (magic_len + 2) ||
|
|
strncasecmp (tmp, magic, magic_len))
|
|
{
|
|
WSREP_ERROR("Failed to read '%s <addr>' (got '%s') from: %s",
|
|
magic, tmp, arg->cmd);
|
|
proc.wait();
|
|
if (proc.error()) err= proc.error();
|
|
}
|
|
else
|
|
{
|
|
err= 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
err= proc.error();
|
|
WSREP_ERROR("Failed to execute (%M): %s",
|
|
err, arg->cmd);
|
|
}
|
|
|
|
/*
|
|
signal sst_prepare thread with ret code,
|
|
it will go on sending SST request
|
|
*/
|
|
mysql_mutex_lock (&arg->lock);
|
|
if (!err)
|
|
{
|
|
arg->ret_str= strdup (out + magic_len + 1);
|
|
if (!arg->ret_str) err= ENOMEM;
|
|
}
|
|
arg->err= -err;
|
|
mysql_cond_signal (&arg->cond);
|
|
mysql_mutex_unlock (&arg->lock); //! @note arg is unusable after that.
|
|
|
|
if (err) return NULL; /* lp:808417 - return immediately, don't signal
|
|
* initializer thread to ensure single thread of
|
|
* shutdown. */
|
|
|
|
wsrep_uuid_t ret_uuid = WSREP_UUID_UNDEFINED;
|
|
wsrep_seqno_t ret_seqno= WSREP_SEQNO_UNDEFINED;
|
|
|
|
// current stage progress
|
|
long long total= 0;
|
|
long long complete= 0;
|
|
// previous stages cumulative progress
|
|
long long total_prev= 0;
|
|
|
|
// in case of successful receiver start, wait for SST completion/end
|
|
const char* tmp= NULL;
|
|
err= EINVAL;
|
|
|
|
wait_signal:
|
|
tmp= my_fgets (out, out_len, proc.from());
|
|
|
|
if (tmp)
|
|
{
|
|
static const char magic_total[]= "total";
|
|
static const size_t total_len=strlen(magic_total);
|
|
static const char magic_complete[]= "complete";
|
|
static const size_t complete_len=strlen(magic_complete);
|
|
static const int from= WSREP_MEMBER_JOINER;
|
|
|
|
if (!strncasecmp (tmp, magic_complete, complete_len))
|
|
{
|
|
sst_handle_complete(tmp + complete_len, total_prev, &total, &complete,
|
|
from);
|
|
goto wait_signal;
|
|
}
|
|
else if (!strncasecmp (tmp, magic_total, total_len))
|
|
{
|
|
sst_handle_total(tmp + total_len, &total_prev, &total, &complete, from);
|
|
goto wait_signal;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WSREP_ERROR("Failed to read uuid:seqno and wsrep_gtid_domain_id from "
|
|
"joiner script.");
|
|
proc.wait();
|
|
if (proc.error()) err= proc.error();
|
|
}
|
|
|
|
// this should be the final script output with GTID
|
|
if (tmp)
|
|
{
|
|
proc.wait();
|
|
// Read state ID (UUID:SEQNO) followed by wsrep_gtid_domain_id (if any).
|
|
unsigned long int domain_id= wsrep_gtid_domain_id;
|
|
const char *pos= strchr(out, ' ');
|
|
WSREP_DEBUG("SST state ID tmp=%s out=%s pos=%p", tmp, out, pos);
|
|
|
|
if (!pos) {
|
|
|
|
if (wsrep_gtid_mode)
|
|
{
|
|
// There is no wsrep_gtid_domain_id (some older version SST script?).
|
|
WSREP_WARN("Did not find domain ID from SST script output '%s'. "
|
|
"Domain ID must be set manually to keep binlog consistent",
|
|
out);
|
|
if (wsrep_gtid_domain_id)
|
|
{
|
|
WSREP_INFO("This node is configured to use wsrep_gtid_domain_id=%lu by user.",
|
|
domain_id);
|
|
wsrep_gtid_server.domain_id= (uint32)domain_id;
|
|
wsrep_gtid_domain_id= (uint32)domain_id;
|
|
}
|
|
}
|
|
err= sst_scan_uuid_seqno (out, &ret_uuid, &ret_seqno);
|
|
|
|
} else {
|
|
// Scan state ID first followed by wsrep_gtid_domain_id.
|
|
unsigned long int domain_id;
|
|
|
|
// Null-terminate the state-id.
|
|
out[pos - out]= 0;
|
|
err= sst_scan_uuid_seqno (out, &ret_uuid, &ret_seqno);
|
|
|
|
if (err)
|
|
{
|
|
goto err;
|
|
}
|
|
else if (wsrep_gtid_mode)
|
|
{
|
|
errno= 0; /* Reset the errno */
|
|
domain_id= strtoul(pos + 1, NULL, 10);
|
|
err= errno;
|
|
|
|
/* Check if we received a valid gtid_domain_id. */
|
|
if (err == EINVAL || err == ERANGE)
|
|
{
|
|
WSREP_ERROR("Failed to get donor wsrep_gtid_domain_id.");
|
|
err= EINVAL;
|
|
goto err;
|
|
} else {
|
|
wsrep_gtid_server.domain_id= (uint32) domain_id;
|
|
wsrep_gtid_domain_id= (uint32)domain_id;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
err:
|
|
|
|
wsrep::gtid ret_gtid;
|
|
|
|
if (err)
|
|
{
|
|
ret_gtid= wsrep::gtid::undefined();
|
|
}
|
|
else
|
|
{
|
|
ret_gtid= wsrep::gtid(wsrep::id(ret_uuid.data, sizeof(ret_uuid.data)),
|
|
wsrep::seqno(ret_seqno));
|
|
}
|
|
|
|
/*
|
|
Tell initializer thread that SST is complete
|
|
For that initialize a THD
|
|
*/
|
|
wsp::thd thd;
|
|
wsrep_sst_complete (thd.ptr, -err, ret_gtid);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#define WSREP_SST_AUTH_ENV "WSREP_SST_OPT_AUTH"
|
|
#define WSREP_SST_REMOTE_AUTH_ENV "WSREP_SST_OPT_REMOTE_AUTH"
|
|
#define DATA_HOME_DIR_ENV "INNODB_DATA_HOME_DIR"
|
|
|
|
static int sst_append_env_var(wsp::env& env,
|
|
const char* const var,
|
|
const char* const val)
|
|
{
|
|
int const env_str_size= strlen(var) + 1 /* = */
|
|
+ (val ? strlen(val) : 0) + 1 /* \0 */;
|
|
|
|
wsp::string env_str(env_str_size); // for automatic cleanup on return
|
|
if (!env_str()) return -ENOMEM;
|
|
|
|
int ret= snprintf(env_str(), env_str_size, "%s=%s", var, val ? val : "");
|
|
|
|
if (ret < 0 || ret >= env_str_size)
|
|
{
|
|
WSREP_ERROR("sst_append_env_var(): snprintf(%s=%s) failed: %d",
|
|
var, val, ret);
|
|
return (ret < 0 ? ret : -EMSGSIZE);
|
|
}
|
|
|
|
env.append(env_str());
|
|
return -env.error();
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
Space, single quote, ampersand, backquote, I/O redirection
|
|
characters, caret, all brackets, plus, exclamation and comma
|
|
characters require text to be enclosed in double quotes:
|
|
*/
|
|
#define IS_SPECIAL(c) \
|
|
(isspace(c) || c == '\'' || c == '&' || c == '`' || c == '|' || \
|
|
c == '>' || c == '<' || c == ';' || c == '^' || \
|
|
c == '[' || c == ']' || c == '{' || c == '}' || \
|
|
c == '(' || c == ')' || c == '+' || c == '!' || \
|
|
c == ',')
|
|
/*
|
|
Inside values, equals character are interpreted as special
|
|
character and requires quotation:
|
|
*/
|
|
#define IS_SPECIAL_V(c) (IS_SPECIAL(c) || c == '=')
|
|
/*
|
|
Double quotation mark and percent characters require escaping:
|
|
*/
|
|
#define IS_REQ_ESCAPING(c) (c == '""' || c == '%')
|
|
#else
|
|
/*
|
|
Space, single quote, ampersand, backquote, and I/O redirection
|
|
characters require text to be enclosed in double quotes. The
|
|
semicolon is used to separate shell commands, so it must be
|
|
enclosed in double quotes as well:
|
|
*/
|
|
#define IS_SPECIAL(c) \
|
|
(isspace(c) || c == '\'' || c == '&' || c == '`' || c == '|' || \
|
|
c == '>' || c == '<' || c == ';')
|
|
/*
|
|
Inside values, characters are interpreted as in parameter names:
|
|
*/
|
|
#define IS_SPECIAL_V(c) IS_SPECIAL(c)
|
|
/*
|
|
Double quotation mark and backslash characters require
|
|
backslash prefixing, the dollar symbol is used to substitute
|
|
a variable value, therefore it also requires escaping:
|
|
*/
|
|
#define IS_REQ_ESCAPING(c) (c == '"' || c == '\\' || c == '$')
|
|
#endif
|
|
|
|
static size_t estimate_cmd_len (bool* extra_args)
|
|
{
|
|
/*
|
|
The length of the area reserved for the control parameters
|
|
of the SST script (excluding the copying of the original
|
|
mysqld arguments):
|
|
*/
|
|
size_t cmd_len= 4096;
|
|
bool extra= false;
|
|
/*
|
|
If mysqld was started with arguments, add them all:
|
|
*/
|
|
if (orig_argc > 1)
|
|
{
|
|
for (int i = 1; i < orig_argc; i++)
|
|
{
|
|
const char* arg= orig_argv[i];
|
|
size_t n= strlen(arg);
|
|
if (n == 0) continue;
|
|
cmd_len += n;
|
|
bool quotation= false;
|
|
char c;
|
|
while ((c = *arg++) != 0)
|
|
{
|
|
if (IS_SPECIAL(c))
|
|
{
|
|
quotation= true;
|
|
}
|
|
else if (IS_REQ_ESCAPING(c))
|
|
{
|
|
cmd_len++;
|
|
#ifdef _WIN32
|
|
quotation= true;
|
|
#endif
|
|
}
|
|
/*
|
|
If the equals symbol is encountered, then we need to separately
|
|
process the right side:
|
|
*/
|
|
else if (c == '=')
|
|
{
|
|
/* Perhaps we need to quote the left part of the argument: */
|
|
if (quotation)
|
|
{
|
|
cmd_len += 2;
|
|
/*
|
|
Reset the quotation flag, since now the status for
|
|
the right side of the expression will be saved here:
|
|
*/
|
|
quotation= false;
|
|
}
|
|
while ((c = *arg++) != 0)
|
|
{
|
|
if (IS_SPECIAL_V(c))
|
|
{
|
|
quotation= true;
|
|
}
|
|
else if (IS_REQ_ESCAPING(c))
|
|
{
|
|
cmd_len++;
|
|
#ifdef _WIN32
|
|
quotation= true;
|
|
#endif
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
/* Perhaps we need to quote the entire argument or its right part: */
|
|
if (quotation)
|
|
{
|
|
cmd_len += 2;
|
|
}
|
|
}
|
|
extra = true;
|
|
cmd_len += strlen(WSREP_SST_OPT_MYSQLD);
|
|
/*
|
|
Add the separating spaces between arguments,
|
|
and one additional space before "--mysqld-args":
|
|
*/
|
|
cmd_len += orig_argc;
|
|
}
|
|
*extra_args= extra;
|
|
return cmd_len;
|
|
}
|
|
|
|
static void copy_orig_argv (char* cmd_str)
|
|
{
|
|
/*
|
|
If mysqld was started with arguments, copy them all:
|
|
*/
|
|
if (orig_argc > 1)
|
|
{
|
|
size_t n = strlen(WSREP_SST_OPT_MYSQLD);
|
|
*cmd_str++ = ' ';
|
|
memcpy(cmd_str, WSREP_SST_OPT_MYSQLD, n * sizeof(char));
|
|
cmd_str += n;
|
|
for (int i = 1; i < orig_argc; i++)
|
|
{
|
|
char* arg= orig_argv[i];
|
|
n = strlen(arg);
|
|
if (n == 0) continue;
|
|
*cmd_str++ = ' ';
|
|
bool quotation= false;
|
|
bool plain= true;
|
|
char *arg_scan= arg;
|
|
char c;
|
|
while ((c = *arg_scan++) != 0)
|
|
{
|
|
if (IS_SPECIAL(c))
|
|
{
|
|
quotation= true;
|
|
}
|
|
else if (IS_REQ_ESCAPING(c))
|
|
{
|
|
plain= false;
|
|
#ifdef _WIN32
|
|
quotation= true;
|
|
#endif
|
|
}
|
|
/*
|
|
If the equals symbol is encountered, then we need to separately
|
|
process the right side:
|
|
*/
|
|
else if (c == '=')
|
|
{
|
|
/* Calculate length of the Left part of the argument: */
|
|
size_t m = (size_t) (arg_scan - arg) - 1;
|
|
if (m)
|
|
{
|
|
/* Perhaps we need to quote the left part of the argument: */
|
|
if (quotation)
|
|
{
|
|
*cmd_str++ = '"';
|
|
}
|
|
/*
|
|
If there were special characters inside, then we can use
|
|
the fast memcpy function:
|
|
*/
|
|
if (plain)
|
|
{
|
|
memcpy(cmd_str, arg, m * sizeof(char));
|
|
cmd_str += m;
|
|
/* Left part of the argument has already been processed: */
|
|
n -= m;
|
|
arg += m;
|
|
}
|
|
/* Otherwise we need to prefix individual characters: */
|
|
else
|
|
{
|
|
n -= m;
|
|
while (m)
|
|
{
|
|
c = *arg++;
|
|
if (IS_REQ_ESCAPING(c))
|
|
{
|
|
#ifdef _WIN32
|
|
*cmd_str++ = c;
|
|
#else
|
|
*cmd_str++ = '\\';
|
|
#endif
|
|
}
|
|
*cmd_str++ = c;
|
|
m--;
|
|
}
|
|
/*
|
|
Reset the plain string flag, since now the status for
|
|
the right side of the expression will be saved here:
|
|
*/
|
|
plain= true;
|
|
}
|
|
/* Perhaps we need to quote the left part of the argument: */
|
|
if (quotation)
|
|
{
|
|
*cmd_str++ = '"';
|
|
/*
|
|
Reset the quotation flag, since now the status for
|
|
the right side of the expression will be saved here:
|
|
*/
|
|
quotation= false;
|
|
}
|
|
}
|
|
/* Copy equals symbol: */
|
|
*cmd_str++ = '=';
|
|
arg++;
|
|
n--;
|
|
/* Let's deal with the left side of the expression: */
|
|
while ((c = *arg_scan++) != 0)
|
|
{
|
|
if (IS_SPECIAL_V(c))
|
|
{
|
|
quotation= true;
|
|
}
|
|
else if (IS_REQ_ESCAPING(c))
|
|
{
|
|
plain= false;
|
|
#ifdef _WIN32
|
|
quotation= true;
|
|
#endif
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (n)
|
|
{
|
|
/* Perhaps we need to quote the entire argument or its right part: */
|
|
if (quotation)
|
|
{
|
|
*cmd_str++ = '"';
|
|
}
|
|
/*
|
|
If there were no special characters inside, then we can use
|
|
the fast memcpy function:
|
|
*/
|
|
if (plain)
|
|
{
|
|
memcpy(cmd_str, arg, n * sizeof(char));
|
|
cmd_str += n;
|
|
}
|
|
/* Otherwise we need to prefix individual characters: */
|
|
else
|
|
{
|
|
while ((c = *arg++) != 0)
|
|
{
|
|
if (IS_REQ_ESCAPING(c))
|
|
{
|
|
#ifdef _WIN32
|
|
*cmd_str++ = c;
|
|
#else
|
|
*cmd_str++ = '\\';
|
|
#endif
|
|
}
|
|
*cmd_str++ = c;
|
|
}
|
|
}
|
|
/* Perhaps we need to quote the entire argument or its right part: */
|
|
if (quotation)
|
|
{
|
|
*cmd_str++ = '"';
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
Add a terminating null character (not counted in the length,
|
|
since we've overwritten the original null character which
|
|
was previously added by snprintf:
|
|
*/
|
|
*cmd_str = 0;
|
|
}
|
|
}
|
|
|
|
/* implementation of strchrnul for systems that don't have it */
|
|
static const char* sst_strchrnul(const char* s, int c)
|
|
{
|
|
const char* ret= strchr(s, c);
|
|
return ret ? ret : s + strlen(s);
|
|
}
|
|
|
|
static ssize_t sst_prepare_other (const char* method,
|
|
const char* addr_in,
|
|
const char** addr_out)
|
|
{
|
|
bool extra_args;
|
|
size_t const cmd_len= estimate_cmd_len(&extra_args);
|
|
wsp::string cmd_str(cmd_len);
|
|
|
|
if (!cmd_str())
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): could not allocate cmd buffer of %zd bytes",
|
|
cmd_len);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
char* binlog_opt_val= NULL;
|
|
char* binlog_index_opt_val= NULL;
|
|
|
|
int ret;
|
|
if ((ret= generate_binlog_opt_val(&binlog_opt_val)))
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): generate_binlog_opt_val() failed: %d",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
if ((ret= generate_binlog_index_opt_val(&binlog_index_opt_val)))
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): generate_binlog_index_opt_val() failed %d",
|
|
ret);
|
|
if (binlog_opt_val) my_free(binlog_opt_val);
|
|
return ret;
|
|
}
|
|
|
|
make_wsrep_defaults_file();
|
|
|
|
ret= snprintf (cmd_str(), cmd_len,
|
|
"wsrep_sst_%s "
|
|
WSREP_SST_OPT_ROLE " 'joiner' "
|
|
WSREP_SST_OPT_ADDR " '%s' "
|
|
WSREP_SST_OPT_DATA " '%s' "
|
|
"%s"
|
|
WSREP_SST_OPT_PARENT " %d "
|
|
WSREP_SST_OPT_PROGRESS " %d"
|
|
"%s"
|
|
"%s",
|
|
method, addr_in, mysql_real_data_home,
|
|
wsrep_defaults_file,
|
|
(int)getpid(),
|
|
wsrep_debug ? 1 : 0,
|
|
binlog_opt_val, binlog_index_opt_val);
|
|
|
|
my_free(binlog_opt_val);
|
|
my_free(binlog_index_opt_val);
|
|
|
|
if (ret < 0 || size_t(ret) >= cmd_len)
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): snprintf() failed: %d", ret);
|
|
return (ret < 0 ? ret : -EMSGSIZE);
|
|
}
|
|
|
|
if (extra_args)
|
|
copy_orig_argv(cmd_str() + ret);
|
|
|
|
sst_auth auth;
|
|
if (sst_auth_real)
|
|
{
|
|
const char* col= sst_strchrnul(sst_auth_real, ':');
|
|
auth.name_ = std::string(sst_auth_real, col - sst_auth_real);
|
|
auth.pswd_ = std::string(':' == *col ? col + 1 : "");
|
|
}
|
|
|
|
wsp::env env(NULL);
|
|
if (env.error())
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): env. var ctor failed: %d", -env.error());
|
|
return -env.error();
|
|
}
|
|
if (data_home_dir)
|
|
{
|
|
if ((ret= sst_append_env_var(env, DATA_HOME_DIR_ENV, data_home_dir)))
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): appending data "
|
|
"directory failed: %d", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
pthread_t tmp, monitor;
|
|
sst_thread_arg arg(method, cmd_str(), auth, env());
|
|
|
|
mysql_mutex_lock (&arg.lock);
|
|
|
|
ret = mysql_thread_create (key_wsrep_sst_joiner_monitor, &monitor, NULL, wsrep_sst_joiner_monitor_thread, NULL);
|
|
|
|
if (ret)
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): mysql_thread_create() failed: %d (%s)",
|
|
ret, strerror(ret));
|
|
return -ret;
|
|
}
|
|
|
|
sst_joiner_completed= false;
|
|
|
|
ret= mysql_thread_create (key_wsrep_sst_joiner, &tmp, NULL, sst_joiner_thread, &arg);
|
|
|
|
if (ret)
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): mysql_thread_create() failed: %d (%s)",
|
|
ret, strerror(ret));
|
|
|
|
pthread_detach(monitor);
|
|
return -ret;
|
|
}
|
|
|
|
mysql_cond_wait (&arg.cond, &arg.lock);
|
|
|
|
*addr_out= arg.ret_str;
|
|
|
|
if (!arg.err)
|
|
ret= strlen(*addr_out);
|
|
else
|
|
{
|
|
assert (arg.err < 0);
|
|
ret= arg.err;
|
|
}
|
|
|
|
pthread_detach (tmp);
|
|
pthread_detach (monitor);
|
|
|
|
return ret;
|
|
}
|
|
|
|
extern uint mysqld_port;
|
|
|
|
/*! Just tells donor where to send mysqldump */
|
|
static ssize_t sst_prepare_mysqldump (const char* addr_in,
|
|
const char** addr_out)
|
|
{
|
|
ssize_t ret= strlen (addr_in);
|
|
|
|
if (!strrchr(addr_in, ':'))
|
|
{
|
|
ssize_t s= ret + 7;
|
|
char* tmp= (char*) malloc (s);
|
|
|
|
if (tmp)
|
|
{
|
|
ret= snprintf (tmp, s, "%s:%u", addr_in, mysqld_port);
|
|
|
|
if (ret > 0 && ret < s)
|
|
{
|
|
*addr_out= tmp;
|
|
return ret;
|
|
}
|
|
if (ret > 0) /* buffer too short */ ret= -EMSGSIZE;
|
|
free (tmp);
|
|
}
|
|
else {
|
|
ret= -ENOMEM;
|
|
}
|
|
|
|
WSREP_ERROR ("Could not prepare state transfer request: "
|
|
"adding default port failed: %zd.", ret);
|
|
}
|
|
else {
|
|
*addr_out= addr_in;
|
|
}
|
|
|
|
pthread_t monitor;
|
|
ret = mysql_thread_create (key_wsrep_sst_joiner_monitor, &monitor, NULL, wsrep_sst_joiner_monitor_thread, NULL);
|
|
|
|
if (ret)
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): mysql_thread_create() failed: %d (%s)",
|
|
ret, strerror(ret));
|
|
return -ret;
|
|
}
|
|
|
|
sst_joiner_completed= false;
|
|
pthread_detach (monitor);
|
|
|
|
return ret;
|
|
}
|
|
|
|
std::string wsrep_sst_prepare()
|
|
{
|
|
const ssize_t ip_max= 256;
|
|
char ip_buf[ip_max];
|
|
const char* addr_in= NULL;
|
|
const char* addr_out= NULL;
|
|
const char* method;
|
|
|
|
if (!strcmp(wsrep_sst_method, WSREP_SST_SKIP))
|
|
{
|
|
return WSREP_STATE_TRANSFER_TRIVIAL;
|
|
}
|
|
|
|
/*
|
|
Figure out SST receive address. Common for all SST methods.
|
|
*/
|
|
wsp::Address* addr_in_parser= NULL;
|
|
|
|
// Attempt 1: wsrep_sst_receive_address
|
|
if (wsrep_sst_receive_address &&
|
|
strcmp(wsrep_sst_receive_address, WSREP_SST_ADDRESS_AUTO))
|
|
{
|
|
addr_in_parser = new wsp::Address(wsrep_sst_receive_address);
|
|
|
|
if (!addr_in_parser->is_valid())
|
|
{
|
|
WSREP_ERROR("Could not parse wsrep_sst_receive_address : %s",
|
|
wsrep_sst_receive_address);
|
|
unireg_abort(1);
|
|
}
|
|
}
|
|
// Attempt 2: wsrep_node_address
|
|
else if (wsrep_node_address && *wsrep_node_address)
|
|
{
|
|
addr_in_parser = new wsp::Address(wsrep_node_address);
|
|
|
|
if (addr_in_parser->is_valid())
|
|
{
|
|
// we must not inherit the port number from this address:
|
|
addr_in_parser->set_port(0);
|
|
}
|
|
else
|
|
{
|
|
WSREP_ERROR("Could not parse wsrep_node_address : %s",
|
|
wsrep_node_address);
|
|
throw wsrep::runtime_error("Failed to prepare for SST. Unrecoverable");
|
|
}
|
|
}
|
|
// Attempt 3: Try to get the IP from the list of available interfaces.
|
|
else
|
|
{
|
|
ssize_t ret= wsrep_guess_ip(ip_buf, ip_max);
|
|
|
|
if (ret && ret < ip_max)
|
|
{
|
|
addr_in_parser = new wsp::Address(ip_buf);
|
|
}
|
|
else
|
|
{
|
|
WSREP_ERROR("Failed to guess address to accept state transfer. "
|
|
"wsrep_sst_receive_address must be set manually.");
|
|
throw wsrep::runtime_error("Could not prepare state transfer request");
|
|
}
|
|
}
|
|
|
|
assert(addr_in_parser);
|
|
|
|
size_t len= addr_in_parser->get_address_len();
|
|
bool is_ipv6= addr_in_parser->is_ipv6();
|
|
const char* address= addr_in_parser->get_address();
|
|
|
|
if (len > (is_ipv6 ? ip_max - 2 : ip_max))
|
|
{
|
|
WSREP_ERROR("Address to accept state transfer is too long: '%s'",
|
|
address);
|
|
unireg_abort(1);
|
|
}
|
|
|
|
if (is_ipv6)
|
|
{
|
|
/* wsrep_sst_*.sh scripts require ipv6 addresses to be in square brackets */
|
|
ip_buf[0] = '[';
|
|
/* the length (len) already includes the null byte: */
|
|
memcpy(ip_buf + 1, address, len - 1);
|
|
ip_buf[len] = ']';
|
|
ip_buf[len + 1] = 0;
|
|
len += 2;
|
|
}
|
|
else
|
|
{
|
|
memcpy(ip_buf, address, len);
|
|
}
|
|
|
|
int port= addr_in_parser->get_port();
|
|
if (port)
|
|
{
|
|
size_t space= ip_max - len;
|
|
ip_buf[len - 1] = ':';
|
|
int ret= snprintf(ip_buf + len, ip_max - len, "%d", port);
|
|
if (ret <= 0 || (size_t) ret > space)
|
|
{
|
|
WSREP_ERROR("Address to accept state transfer is too long: '%s:%d'",
|
|
address, port);
|
|
unireg_abort(1);
|
|
}
|
|
}
|
|
|
|
delete addr_in_parser;
|
|
addr_in = ip_buf;
|
|
|
|
ssize_t addr_len= -ENOSYS;
|
|
method = wsrep_sst_method;
|
|
if (!strcmp(method, WSREP_SST_MYSQLDUMP))
|
|
{
|
|
addr_len= sst_prepare_mysqldump (addr_in, &addr_out);
|
|
if (addr_len < 0)
|
|
{
|
|
throw wsrep::runtime_error("Could not prepare mysqldimp address");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*! A heuristic workaround until we learn how to stop and start engines */
|
|
if (Wsrep_server_state::instance().is_initialized() &&
|
|
Wsrep_server_state::instance().state() == Wsrep_server_state::s_joiner)
|
|
{
|
|
if (!strcmp(method, WSREP_SST_XTRABACKUP) ||
|
|
!strcmp(method, WSREP_SST_XTRABACKUPV2))
|
|
{
|
|
WSREP_WARN("The %s SST method is deprecated, so it is automatically "
|
|
"replaced by %s", method, WSREP_SST_MARIABACKUP);
|
|
method = WSREP_SST_MARIABACKUP;
|
|
}
|
|
// we already did SST at initialization, now engines are running
|
|
// sql_print_information() is here because the message is too long
|
|
// for WSREP_INFO.
|
|
sql_print_information ("WSREP: "
|
|
"You have configured '%s' state snapshot transfer method "
|
|
"which cannot be performed on a running server. "
|
|
"Wsrep provider won't be able to fall back to it "
|
|
"if other means of state transfer are unavailable. "
|
|
"In that case you will need to restart the server.",
|
|
method);
|
|
return "";
|
|
}
|
|
|
|
addr_len = sst_prepare_other(method, addr_in, &addr_out);
|
|
if (addr_len < 0)
|
|
{
|
|
WSREP_ERROR("Failed to prepare for '%s' SST. Unrecoverable.",
|
|
method);
|
|
throw wsrep::runtime_error("Failed to prepare for SST. Unrecoverable");
|
|
}
|
|
}
|
|
|
|
std::string ret;
|
|
ret += method;
|
|
ret.push_back('\0');
|
|
ret += addr_out;
|
|
|
|
const char* method_ptr(ret.data());
|
|
const char* addr_ptr(ret.data() + strlen(method_ptr) + 1);
|
|
WSREP_DEBUG("Prepared SST request: %s|%s", method_ptr, addr_ptr);
|
|
|
|
if (addr_out != addr_in) /* malloc'ed */ free ((char*)addr_out);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int run_sql_command(wsp::mysql& mysql, const char* query)
|
|
{
|
|
int err= mysql.execute(query);
|
|
if (err)
|
|
{
|
|
WSREP_WARN("Error executing '%s': %d (%s)",
|
|
query, err, mysql.errstr());
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int run_sql_command_thd(THD *thd, const char *query)
|
|
{
|
|
int ret= 0;
|
|
|
|
thd->reset_for_next_command();
|
|
thd->set_query((char*)query, strlen(query));
|
|
|
|
Parser_state ps;
|
|
if (ps.init(thd, thd->query(), thd->query_length()))
|
|
{
|
|
WSREP_ERROR("SST query: %s failed", query);
|
|
ret= -1;
|
|
}
|
|
else
|
|
{
|
|
PSI_statement_locker *parent_locker= thd->m_statement_psi;
|
|
thd->set_query_id(next_query_id());
|
|
|
|
mysql_parse(thd, thd->query(), thd->query_length(), &ps);
|
|
if (thd->is_error())
|
|
{
|
|
int const err= thd->get_stmt_da()->sql_errno();
|
|
if (err)
|
|
{
|
|
WSREP_WARN ("Error executing '%s': %d (%s)",
|
|
query, err, thd->get_stmt_da()->message());
|
|
ret= err;
|
|
}
|
|
thd->clear_error();
|
|
}
|
|
thd->m_statement_psi= parent_locker;
|
|
thd->end_statement();
|
|
close_thread_tables(thd);
|
|
delete_explain_query(thd->lex);
|
|
}
|
|
|
|
thd->reset_query();
|
|
thd->cleanup_after_query();
|
|
return ret;
|
|
}
|
|
|
|
|
|
#define SST_USER_PREFIX "wsrep.sst."
|
|
|
|
static std::string
|
|
generate_user_name(const char* const node_name)
|
|
{
|
|
struct timeval tv;
|
|
gettimeofday(&tv, NULL);
|
|
time_t time_now;
|
|
time_now = tv.tv_sec;
|
|
struct tm tm_now;
|
|
(void)gmtime_r(&time_now, &tm_now);
|
|
char timestamp[32];
|
|
strftime(timestamp, sizeof(timestamp), "%y%m%d_%H%M%S", &tm_now);
|
|
|
|
return (std::string(SST_USER_PREFIX) + timestamp + "_" + node_name).substr
|
|
(0, USERNAME_CHAR_LENGTH);
|
|
}
|
|
|
|
void
|
|
wsrep_sst_cleanup_user(THD* const thd)
|
|
{
|
|
int err;
|
|
wsp::mysql mysql;
|
|
if ((err = mysql.errnum()) ||
|
|
(err = mysql.disable_replication()) ||
|
|
((err = mysql.execute("DELETE FROM mysql.user WHERE user LIKE '" SST_USER_PREFIX "%';")) &&
|
|
err != ER_NO_SUCH_TABLE &&
|
|
err != ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE))
|
|
{
|
|
WSREP_WARN("Failed to clean up SST user(s): %d (%s)", err, mysql.errstr());
|
|
}
|
|
}
|
|
|
|
static std::string
|
|
generate_password(int size) {
|
|
// Password characters are limited, because we are using these passwords
|
|
// within a bash script.
|
|
static const std::string g_allowed_pwd_chars(
|
|
"qwertyuiopasdfghjklzxcvbnm1234567890"
|
|
"QWERTYUIOPASDFGHJKLZXCVBNM");
|
|
// To guarantee MySQL password requirements: upper/lowercase, numbers,
|
|
// special characters
|
|
const char* const pwd_prefix("yx9!A-");
|
|
|
|
std::stringstream ss;
|
|
ss << pwd_prefix;
|
|
size -= strlen(pwd_prefix);
|
|
|
|
ulong const seed1= (ulong) (my_rnd(&sql_rand) * 0xffffffff);
|
|
ulong const seed2= (ulong) time((time_t*) 0);
|
|
struct my_rnd_struct rand;
|
|
my_rnd_init(&rand, seed1 + (ulong)((size_t) &rand), seed2);
|
|
|
|
while (size > 0) {
|
|
int ch = ((int)(my_rnd(&rand) * 0xffff)) % g_allowed_pwd_chars.size();
|
|
ss << g_allowed_pwd_chars[ch];
|
|
--size;
|
|
}
|
|
|
|
return ss.str();
|
|
}
|
|
|
|
static const char**
|
|
sst_user_grants(const std::string& method)
|
|
{
|
|
static const char* mariabackup[] = {
|
|
"GRANT RELOAD, PROCESS, LOCK TABLES, BINLOG MONITOR ON *.* TO '%s'@'localhost';",
|
|
nullptr,
|
|
nullptr,
|
|
nullptr
|
|
};
|
|
static const char* rsync[] = {
|
|
nullptr,
|
|
nullptr
|
|
};
|
|
/* We don't know which privileges might be needed for custom SST scripts,
|
|
* so GRANT all */
|
|
static const char* other[] = {
|
|
"GRANT ALL ON *.* TO '%s'@localhost WITH GRANT OPTION;",
|
|
nullptr,
|
|
nullptr
|
|
};
|
|
|
|
if (method == "mariabackup-test") {
|
|
return mariabackup;
|
|
}
|
|
if (method == "rsync") {
|
|
assert(0); // should not attempt to create user for this SSST
|
|
return rsync;
|
|
}
|
|
|
|
return other;
|
|
}
|
|
|
|
/**
|
|
* cmds[] This array is filled with pairs of entries.
|
|
The first entry is the printf template for the query to be run:
|
|
optional %s will be filled with name and password.
|
|
The second entry is the string to be displayed if the query fails
|
|
(this can be NULL, in which case the actual query will be used)
|
|
*/
|
|
static int
|
|
run_sql_commands(wsp::mysql& mysql,
|
|
const char* cmds[],
|
|
const std::string& name,
|
|
const std::string& password)
|
|
{
|
|
int ret = 0;
|
|
for (int index = 0; !ret && cmds[index]; index += 2)
|
|
{
|
|
int const cmd_len = 512;
|
|
char cmd_buf[cmd_len] = { 0,};
|
|
|
|
ret = snprintf(cmd_buf, cmd_len, cmds[index],
|
|
name.c_str(), password.c_str());
|
|
if (ret < 0 || ret >= cmd_len) {
|
|
WSREP_ERROR("run_sql_commands(): snprintf() failed: %d", ret);
|
|
ret = (ret < 0 ? ret : -EMSGSIZE);
|
|
break;
|
|
}
|
|
else {
|
|
WSREP_INFO("run_sql_commands(%p): '%s'",
|
|
cmds, cmds[index + 1] ? cmds[index + 1] : cmd_buf);
|
|
}
|
|
|
|
ret = run_sql_command(mysql, cmd_buf);
|
|
if (ret) break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
Helper class to manage SST users
|
|
*/
|
|
class sst_user
|
|
{
|
|
wsp::mysql* mysql_;
|
|
std::string const name_;
|
|
std::string const password_;
|
|
int err_;
|
|
public:
|
|
/* ctor in case we need to create SST user */
|
|
sst_user(const std::string& method) :
|
|
mysql_(new wsp::mysql),
|
|
name_(generate_user_name(wsrep_node_name)),
|
|
password_(generate_password(32)),
|
|
err_(mysql_->errnum())
|
|
{
|
|
assert(method != "rsync"); // should not attempt to create user for this SST
|
|
|
|
// This array is filled with pairs of entries
|
|
// The first entry is the tmeplate query to be run
|
|
// The second entry is the string to be displayed if the query fails
|
|
// (this can be NULL, in which case the actual query will be used)
|
|
static const char *create_sst_user[] = {
|
|
"DROP USER IF EXISTS '%s'@localhost;",
|
|
nullptr,
|
|
"CREATE USER '%s'@localhost IDENTIFIED BY '%s';",
|
|
"CREATE USER '*'@localhost IDENTIFIED BY ***** ;", // mangled password for logging
|
|
nullptr,
|
|
nullptr
|
|
};
|
|
|
|
if (err_) {
|
|
WSREP_ERROR("sst_user::user() mysql connect failed: %d (%s)",
|
|
err_, mysql_->errstr());
|
|
return;
|
|
}
|
|
|
|
err_ = mysql_->disable_replication();
|
|
if (err_) {
|
|
WSREP_ERROR("sst_user::user() disable replication failed: %d (%s)",
|
|
err_, mysql_->errstr());
|
|
return;
|
|
}
|
|
|
|
err_ = run_sql_commands(*mysql_, create_sst_user, name_, password_);
|
|
if (err_) {
|
|
WSREP_ERROR("sst_user::user() create user failed: %d (%s)",
|
|
err_, err_ < 0 ? strerror(-err_) : mysql_->errstr());
|
|
return;
|
|
}
|
|
|
|
err_ = run_sql_commands(*mysql_, sst_user_grants(method), name_, password_);
|
|
if (err_) {
|
|
WSREP_ERROR("sst_user::user() grant privileges failed: %d (%s)",
|
|
err_, err_ < 0 ? strerror(-err_) : mysql_->errstr());
|
|
}
|
|
}
|
|
|
|
/* ctor in case SST user was externally supplied */
|
|
sst_user(const std::string& name, const std::string& password) :
|
|
mysql_(nullptr),
|
|
name_(name),
|
|
password_(password),
|
|
err_(0)
|
|
{}
|
|
|
|
~sst_user()
|
|
{
|
|
if (mysql_) {
|
|
/* Need to cleanup SST user */
|
|
static const char *cmds[] = {
|
|
"DROP USER IF EXISTS '%s'@localhost;",
|
|
nullptr,
|
|
nullptr,
|
|
nullptr
|
|
};
|
|
err_ = run_sql_commands(*mysql_, cmds, name_, password_);
|
|
if (err_) {
|
|
WSREP_ERROR("sst_user::~user() user '%s' cleanup failed: %d (%s)",
|
|
name_.c_str(),
|
|
err_, err_ < 0 ? strerror(-err_) : mysql_->errstr());
|
|
}
|
|
delete mysql_;
|
|
}
|
|
}
|
|
|
|
const std::string& name() const { return name_; }
|
|
const std::string& password() const { return password_; }
|
|
int err() const { return err_; }
|
|
};
|
|
|
|
static int
|
|
write_auth_info(FILE* const file, const char* method,
|
|
const sst_auth& auth, sst_user** ret_user)
|
|
{
|
|
int err;
|
|
sst_user* user(nullptr);
|
|
|
|
try {
|
|
if (auth.name_.length() > 0) {
|
|
/* User supplied wsrep_sst_auth */
|
|
user= new sst_user(auth.name_, auth.pswd_);
|
|
}
|
|
else {
|
|
/* No wsrep_sst_auth, create a temporary user for SST */
|
|
user= new sst_user(method);
|
|
}
|
|
err= user->err();
|
|
}
|
|
catch (...) {
|
|
err= ENOMEM;
|
|
}
|
|
*ret_user= user;
|
|
|
|
if (err)
|
|
{
|
|
WSREP_ERROR("Failed to create SST user: %d (%s)", err, strerror(err));
|
|
}
|
|
else
|
|
{
|
|
int ret= fprintf(file,
|
|
"sst_user=%s\n"
|
|
"sst_password=%s\n",
|
|
user->name().c_str(),
|
|
user->password().c_str());
|
|
if (ret < 0)
|
|
{
|
|
WSREP_ERROR("write_auth_info(): fprintf(1) failed: %d", ret);
|
|
err= (ret < 0 ? ret : -EMSGSIZE);
|
|
}
|
|
|
|
if (auth.remote_name_.length())
|
|
{
|
|
ret= fprintf(file,
|
|
"sst_remote_user=%s\n"
|
|
"sst_remote_password=%s\n",
|
|
auth.remote_name_.c_str(),
|
|
auth.remote_pswd_.c_str());
|
|
if (ret < 0)
|
|
{
|
|
WSREP_ERROR("write_auth_info(): fprintf(2) failed: %d", ret);
|
|
err= (ret < 0 ? ret : -EMSGSIZE);
|
|
}
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void sst_reject_queries(my_bool close_conn)
|
|
{
|
|
WSREP_INFO("Rejecting client queries for the duration of SST.");
|
|
if (TRUE == close_conn) wsrep_close_client_connections(FALSE);
|
|
}
|
|
|
|
/*
|
|
Create a file under data directory.
|
|
*/
|
|
static int sst_create_file(const char *name, const char *content)
|
|
{
|
|
int err= 0;
|
|
char *real_name;
|
|
char *tmp_name;
|
|
ssize_t len;
|
|
FILE *file;
|
|
|
|
len= strlen(mysql_real_data_home) + strlen(name) + 2;
|
|
real_name= (char *) alloca(len);
|
|
|
|
snprintf(real_name, (size_t) len, "%s/%s", mysql_real_data_home, name);
|
|
|
|
tmp_name= (char *) alloca(len + 4);
|
|
snprintf(tmp_name, (size_t) len + 4, "%s.tmp", real_name);
|
|
|
|
file= fopen(tmp_name, "w+");
|
|
|
|
if (0 == file)
|
|
{
|
|
err= errno;
|
|
WSREP_ERROR("Failed to open '%s': %d (%s)", tmp_name, err, strerror(err));
|
|
}
|
|
else
|
|
{
|
|
// Write the specified content into the file.
|
|
if (content != NULL)
|
|
{
|
|
fprintf(file, "%s\n", content);
|
|
fsync(fileno(file));
|
|
}
|
|
|
|
fclose(file);
|
|
|
|
if (rename(tmp_name, real_name) == -1)
|
|
{
|
|
err= errno;
|
|
WSREP_ERROR("Failed to rename '%s' to '%s': %d (%s)", tmp_name,
|
|
real_name, err, strerror(err));
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
wsrep_seqno_t wsrep_locked_seqno= WSREP_SEQNO_UNDEFINED;
|
|
|
|
static int sst_flush_tables(THD* thd)
|
|
{
|
|
WSREP_INFO("Flushing tables for SST...");
|
|
|
|
int err= 0;
|
|
int not_used;
|
|
/*
|
|
Files created to notify the SST script about the outcome of table flush
|
|
operation.
|
|
*/
|
|
const char *flush_success= "tables_flushed";
|
|
const char *flush_error= "sst_error";
|
|
|
|
CHARSET_INFO *current_charset= thd->variables.character_set_client;
|
|
|
|
if (!is_supported_parser_charset(current_charset))
|
|
{
|
|
/* Do not use non-supported parser character sets */
|
|
WSREP_WARN("Current client character set is non-supported parser character set: %s", current_charset->cs_name.str);
|
|
thd->variables.character_set_client= &my_charset_latin1;
|
|
WSREP_WARN("For SST temporally setting character set to : %s",
|
|
my_charset_latin1.cs_name.str);
|
|
}
|
|
|
|
if (run_sql_command_thd(thd, "FLUSH TABLES WITH READ LOCK"))
|
|
{
|
|
err= -1;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
Make sure logs are flushed after global read lock acquired. In case
|
|
reload fails, we must also release the acquired FTWRL.
|
|
*/
|
|
if (reload_acl_and_cache(thd, REFRESH_ENGINE_LOG | REFRESH_BINARY_LOG,
|
|
(TABLE_LIST*) 0, ¬_used))
|
|
{
|
|
thd->global_read_lock.unlock_global_read_lock(thd);
|
|
err= -1;
|
|
}
|
|
}
|
|
|
|
thd->variables.character_set_client= current_charset;
|
|
|
|
if (err)
|
|
{
|
|
WSREP_ERROR("Failed to flush and lock tables");
|
|
|
|
/*
|
|
The SST must be aborted as the flush tables failed. Notify this to SST
|
|
script by creating the error file.
|
|
*/
|
|
int tmp;
|
|
if ((tmp= sst_create_file(flush_error, NULL))) {
|
|
err= tmp;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ha_disable_internal_writes(true);
|
|
|
|
WSREP_INFO("Tables flushed.");
|
|
|
|
// Create a file with cluster state ID and wsrep_gtid_domain_id.
|
|
char content[100];
|
|
snprintf(content, sizeof(content), "%s:%lld %d\n", wsrep_cluster_state_uuid,
|
|
(long long)wsrep_locked_seqno, wsrep_gtid_server.domain_id);
|
|
WSREP_DEBUG("sst_flush_tables : %s:%lld %d", wsrep_cluster_state_uuid,
|
|
(long long)wsrep_locked_seqno, wsrep_gtid_server.domain_id);
|
|
err= sst_create_file(flush_success, content);
|
|
|
|
if (err)
|
|
WSREP_INFO("Creating file for flush_success failed %d",err);
|
|
|
|
const char base_name[]= "tables_flushed";
|
|
ssize_t const full_len= strlen(mysql_real_data_home) + strlen(base_name)+2;
|
|
char *real_name= (char*) my_malloc(key_memory_WSREP, full_len, 0);
|
|
sprintf(real_name, "%s/%s", mysql_real_data_home, base_name);
|
|
char *tmp_name= (char*) my_malloc(key_memory_WSREP, full_len + 4, 0);
|
|
sprintf(tmp_name, "%s.tmp", real_name);
|
|
|
|
FILE* file= fopen(tmp_name, "w+");
|
|
if (0 == file)
|
|
{
|
|
err= errno;
|
|
WSREP_ERROR("Failed to open '%s': %d (%s)", tmp_name, err,strerror(err));
|
|
}
|
|
else
|
|
{
|
|
Wsrep_server_state& server_state= Wsrep_server_state::instance();
|
|
std::ostringstream uuid_oss;
|
|
|
|
uuid_oss << server_state.current_view().state_id().id();
|
|
|
|
fprintf(file, "%s:%lld %u\n",
|
|
uuid_oss.str().c_str(), server_state.pause_seqno().get(),
|
|
wsrep_gtid_server.domain_id);
|
|
fsync(fileno(file));
|
|
fclose(file);
|
|
if (rename(tmp_name, real_name) == -1)
|
|
{
|
|
err= errno;
|
|
WSREP_ERROR("Failed to rename '%s' to '%s': %d (%s)",
|
|
tmp_name, real_name, err,strerror(err));
|
|
}
|
|
}
|
|
my_free(real_name);
|
|
my_free(tmp_name);
|
|
if (err)
|
|
ha_disable_internal_writes(false);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void* sst_donor_thread (void* a)
|
|
{
|
|
sst_thread_arg* arg= (sst_thread_arg*)a;
|
|
std::string const method(arg->method_);
|
|
sst_auth const auth(arg->auth_);
|
|
|
|
WSREP_INFO("Initiating SST/IST transfer on DONOR side (%s)", arg->cmd);
|
|
|
|
int err= 1;
|
|
bool locked= false;
|
|
|
|
const char* out= NULL;
|
|
const size_t out_len= 128;
|
|
char out_buf[out_len];
|
|
|
|
wsrep_uuid_t ret_uuid= WSREP_UUID_UNDEFINED;
|
|
// seqno of complete SST
|
|
wsrep_seqno_t ret_seqno= WSREP_SEQNO_UNDEFINED;
|
|
|
|
wsp::process proc(arg->cmd, "rw", arg->env);
|
|
err= -proc.error();
|
|
|
|
if (err)
|
|
{
|
|
WSREP_ERROR("Failed to start SST process: %d", err);
|
|
}
|
|
|
|
/* Inform server about SST script startup and release TO isolation */
|
|
mysql_mutex_lock (&arg->lock);
|
|
arg->err= -err;
|
|
mysql_cond_signal (&arg->cond);
|
|
mysql_mutex_unlock (&arg->lock); //! @note arg is unusable after that.
|
|
arg= nullptr;
|
|
|
|
wsp::thd thd;
|
|
|
|
err = thd.err();
|
|
if (err)
|
|
{
|
|
WSREP_ERROR("Can't initialize donor THD: %d", err);
|
|
}
|
|
|
|
sst_user* user(nullptr);
|
|
|
|
if (proc.to() && !err)
|
|
{
|
|
/* At this point SST process is waiting for input or EOF on STDIN.
|
|
* Create SST user and send sensitive information to it. */
|
|
err= write_auth_info(proc.to(), method.c_str(), auth, &user);
|
|
// Close the pipe, so that the SST process gets an EOF
|
|
proc.close_to();
|
|
}
|
|
|
|
/* This cleanups SST user on thread exit, i.e. on SST end, whether it was
|
|
* successfully created or not */
|
|
class cleanup_sst_user{
|
|
sst_user* const user_;
|
|
public:
|
|
cleanup_sst_user(sst_user* user) : user_(user) {}
|
|
~cleanup_sst_user() {
|
|
WSREP_INFO("Cleaning up SST user.");
|
|
delete user_;
|
|
}
|
|
} cleanup_sst_user_guard(user);
|
|
|
|
if (proc.from() && !err)
|
|
{
|
|
long long total= 0;
|
|
long long complete= 0;
|
|
// total from previous stages
|
|
long long total_prev= 0;
|
|
|
|
wait_signal:
|
|
out= my_fgets (out_buf, out_len, proc.from());
|
|
|
|
if (out)
|
|
{
|
|
static const char magic_flush[]= "flush tables";
|
|
static const char magic_cont[]= "continue";
|
|
static const char magic_done[]= "done";
|
|
static const size_t done_len=strlen(magic_done);
|
|
static const char magic_total[]= "total";
|
|
static const size_t total_len=strlen(magic_total);
|
|
static const char magic_complete[]= "complete";
|
|
static const size_t complete_len=strlen(magic_complete);
|
|
static const int from= WSREP_MEMBER_DONOR;
|
|
|
|
if (!strncasecmp (out, magic_complete, complete_len))
|
|
{
|
|
sst_handle_complete(out + complete_len, total_prev, &total, &complete,
|
|
from);
|
|
goto wait_signal;
|
|
}
|
|
else if (!strncasecmp (out, magic_total, total_len))
|
|
{
|
|
sst_handle_total(out + total_len, &total_prev, &total, &complete, from);
|
|
goto wait_signal;
|
|
}
|
|
else if (!strcasecmp (out, magic_flush))
|
|
{
|
|
err= sst_flush_tables (thd.ptr);
|
|
|
|
if (!err)
|
|
{
|
|
locked= true;
|
|
/*
|
|
Lets also keep statements that modify binary logs (like RESET LOGS,
|
|
RESET MASTER) from proceeding until the files have been transferred
|
|
to the joiner node.
|
|
*/
|
|
if (mysql_bin_log.is_open())
|
|
mysql_mutex_lock(mysql_bin_log.get_log_lock());
|
|
|
|
WSREP_INFO("Donor state reached");
|
|
|
|
#ifdef ENABLED_DEBUG_SYNC
|
|
DBUG_EXECUTE_IF("sync.wsrep_donor_state",
|
|
{
|
|
const char act[]=
|
|
"now "
|
|
"SIGNAL sync.wsrep_donor_state_reached "
|
|
"WAIT_FOR signal.wsrep_donor_state";
|
|
assert(!debug_sync_set_action(thd.ptr,
|
|
STRING_WITH_LEN(act)));
|
|
};);
|
|
#endif
|
|
|
|
goto wait_signal;
|
|
}
|
|
}
|
|
else if (!strcasecmp (out, magic_cont))
|
|
{
|
|
if (locked)
|
|
{
|
|
locked= false;
|
|
ha_disable_internal_writes(false);
|
|
if (mysql_bin_log.is_open())
|
|
mysql_mutex_unlock(mysql_bin_log.get_log_lock());
|
|
thd.ptr->global_read_lock.unlock_global_read_lock(thd.ptr);
|
|
}
|
|
err= 0;
|
|
goto wait_signal;
|
|
}
|
|
else if (!strncasecmp (out, magic_done, done_len))
|
|
{
|
|
err= sst_scan_uuid_seqno (out + strlen(magic_done) + 1,
|
|
&ret_uuid, &ret_seqno);
|
|
}
|
|
else
|
|
{
|
|
WSREP_WARN("Received unknown signal: '%s'", out);
|
|
/* since it is the end of the loop, we must set error code */
|
|
err=-EINVAL;
|
|
proc.wait();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WSREP_ERROR("Failed to read from: %s", proc.cmd());
|
|
proc.wait();
|
|
}
|
|
if (!err && proc.error()) err= -proc.error();
|
|
}
|
|
else
|
|
{
|
|
WSREP_ERROR("Failed to execute: %s : %d (%s)",
|
|
proc.cmd(), err, strerror(err));
|
|
}
|
|
|
|
if (locked) // don't forget to unlock server before return
|
|
{
|
|
ha_disable_internal_writes(false);
|
|
if (mysql_bin_log.is_open())
|
|
{
|
|
mysql_mutex_assert_owner(mysql_bin_log.get_log_lock());
|
|
mysql_mutex_unlock(mysql_bin_log.get_log_lock());
|
|
}
|
|
thd.ptr->global_read_lock.unlock_global_read_lock(thd.ptr);
|
|
}
|
|
|
|
wsrep::gtid gtid(wsrep::id(ret_uuid.data, sizeof(ret_uuid.data)),
|
|
wsrep::seqno(err ? wsrep::seqno::undefined() :
|
|
wsrep::seqno(ret_seqno)));
|
|
|
|
#ifdef ENABLED_DEBUG_SYNC
|
|
DBUG_EXECUTE_IF("sync.wsrep_sst_donor_after_donation", {
|
|
const char act[]= "now "
|
|
"SIGNAL sync.wsrep_sst_donor_after_donation_reached "
|
|
"WAIT_FOR signal.wsrep_sst_donor_after_donation_continue";
|
|
DBUG_ASSERT(!debug_sync_set_action(thd.ptr, STRING_WITH_LEN(act)));
|
|
});
|
|
#endif /* ENABLED_DEBUG_SYNC */
|
|
|
|
Wsrep_server_state::instance().sst_sent(gtid, err);
|
|
|
|
proc.wait();
|
|
|
|
wsrep_donor_monitor_end();
|
|
return nullptr;
|
|
}
|
|
|
|
/* There used to be a separate method for mysqldump SST, but now everything
|
|
* goes through this method. */
|
|
static int sst_donate_other (const char* method,
|
|
const char* addr,
|
|
const wsrep::gtid& gtid,
|
|
const bool bypass,
|
|
const sst_auth& auth,
|
|
char** env) // carries auth info
|
|
{
|
|
bool extra_args;
|
|
size_t const cmd_len= estimate_cmd_len(&extra_args);
|
|
wsp::string cmd_str(cmd_len);
|
|
|
|
if (!cmd_str())
|
|
{
|
|
WSREP_ERROR("sst_donate_other(): "
|
|
"could not allocate cmd buffer of %zd bytes", cmd_len);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
char* binlog_opt_val= NULL;
|
|
char* binlog_index_opt_val= NULL;
|
|
|
|
int ret;
|
|
if ((ret= generate_binlog_opt_val(&binlog_opt_val)))
|
|
{
|
|
WSREP_ERROR("sst_donate_other(): generate_binlog_opt_val() failed: %d",ret);
|
|
return ret;
|
|
}
|
|
|
|
if ((ret= generate_binlog_index_opt_val(&binlog_index_opt_val)))
|
|
{
|
|
WSREP_ERROR("sst_prepare_other(): generate_binlog_index_opt_val() failed %d",
|
|
ret);
|
|
if (binlog_opt_val) my_free(binlog_opt_val);
|
|
return ret;
|
|
}
|
|
|
|
make_wsrep_defaults_file();
|
|
|
|
std::ostringstream uuid_oss;
|
|
uuid_oss << gtid.id();
|
|
ret= snprintf (cmd_str(), cmd_len,
|
|
"wsrep_sst_%s "
|
|
WSREP_SST_OPT_ROLE " 'donor' "
|
|
WSREP_SST_OPT_ADDR " '%s' "
|
|
WSREP_SST_OPT_LPORT " %u "
|
|
WSREP_SST_OPT_SOCKET " '%s' "
|
|
WSREP_SST_OPT_PROGRESS " %d "
|
|
WSREP_SST_OPT_DATA " '%s' "
|
|
"%s"
|
|
WSREP_SST_OPT_GTID " '%s:%lld' "
|
|
WSREP_SST_OPT_GTID_DOMAIN_ID " %d"
|
|
"%s"
|
|
"%s"
|
|
"%s",
|
|
method, addr, mysqld_port, mysqld_unix_port,
|
|
wsrep_debug ? 1 : 0,
|
|
mysql_real_data_home,
|
|
wsrep_defaults_file,
|
|
uuid_oss.str().c_str(), gtid.seqno().get(), wsrep_gtid_server.domain_id,
|
|
binlog_opt_val, binlog_index_opt_val,
|
|
bypass ? " " WSREP_SST_OPT_BYPASS : "");
|
|
|
|
my_free(binlog_opt_val);
|
|
my_free(binlog_index_opt_val);
|
|
|
|
if (ret < 0 || size_t(ret) >= cmd_len)
|
|
{
|
|
WSREP_ERROR("sst_donate_other(): snprintf() failed: %d", ret);
|
|
return (ret < 0 ? ret : -EMSGSIZE);
|
|
}
|
|
|
|
if (extra_args)
|
|
copy_orig_argv(cmd_str() + ret);
|
|
|
|
if (!bypass && wsrep_sst_donor_rejects_queries) sst_reject_queries(FALSE);
|
|
|
|
pthread_t tmp;
|
|
sst_thread_arg arg(method, cmd_str(), auth, env);
|
|
|
|
mysql_mutex_lock (&arg.lock);
|
|
|
|
ret= mysql_thread_create (key_wsrep_sst_donor, &tmp, NULL, sst_donor_thread, &arg);
|
|
|
|
if (ret)
|
|
{
|
|
WSREP_ERROR("sst_donate_other(): mysql_thread_create() failed: %d (%s)",
|
|
ret, strerror(ret));
|
|
return ret;
|
|
}
|
|
|
|
mysql_cond_wait (&arg.cond, &arg.lock);
|
|
|
|
WSREP_INFO("sst_donor_thread signaled with %d", arg.err);
|
|
return arg.err;
|
|
}
|
|
|
|
int wsrep_sst_donate(const std::string& msg,
|
|
const wsrep::gtid& current_gtid,
|
|
const bool bypass)
|
|
{
|
|
const char* method= msg.data();
|
|
size_t method_len= strlen (method);
|
|
|
|
if (check_request_str(method, filename_char, true))
|
|
{
|
|
WSREP_ERROR("Bad SST method name. SST canceled.");
|
|
return WSREP_CB_FAILURE;
|
|
}
|
|
|
|
const char* data= method + method_len + 1;
|
|
|
|
/* check for auth@addr separator */
|
|
const char* addr= strrchr(data, '@');
|
|
wsp::string remote_auth;
|
|
if (addr)
|
|
{
|
|
remote_auth.set(strndup(data, addr - data));
|
|
addr++;
|
|
}
|
|
else
|
|
{
|
|
// no auth part
|
|
addr= data;
|
|
}
|
|
|
|
if (check_request_str(addr, address_char, true))
|
|
{
|
|
WSREP_ERROR("Bad SST address string. SST canceled.");
|
|
return WSREP_CB_FAILURE;
|
|
}
|
|
|
|
/* Set up auth info (from <user>:<password> strings) */
|
|
sst_auth auth;
|
|
if (sst_auth_real)
|
|
{
|
|
/* User supplied non-trivial wsrep_sst_auth, use it */
|
|
const char* col= sst_strchrnul(sst_auth_real, ':');
|
|
auth.name_ = std::string(sst_auth_real, col - sst_auth_real);
|
|
auth.pswd_ = std::string(':' == *col ? col + 1 : "");
|
|
}
|
|
else if (0 == strcmp(method, "rsync"))
|
|
{
|
|
/* This dummy auth info will prevent SST account creation for rsync SST -
|
|
* as it does not need any ATM. */
|
|
auth.name_ = "rsync";
|
|
auth.pswd_ = "none";
|
|
}
|
|
else
|
|
{
|
|
/* Empty auth will trigger automatic SST account creation. */
|
|
}
|
|
if (remote_auth())
|
|
{
|
|
/* wsp::string is just a dynamically allocated char* underneath
|
|
* so we can safely do all that arithmetics */
|
|
const char* col= sst_strchrnul(remote_auth(), ':');
|
|
auth.remote_name_ = std::string(remote_auth(), col - remote_auth());
|
|
auth.remote_pswd_ = std::string(':' == *col ? col + 1 : "");
|
|
}
|
|
|
|
wsp::env env(NULL);
|
|
if (env.error())
|
|
{
|
|
WSREP_ERROR("wsrep_sst_donate_cb(): env var ctor failed: %d", -env.error());
|
|
return WSREP_CB_FAILURE;
|
|
}
|
|
|
|
int ret;
|
|
if (data_home_dir)
|
|
{
|
|
if ((ret= sst_append_env_var(env, DATA_HOME_DIR_ENV, data_home_dir)))
|
|
{
|
|
WSREP_ERROR("wsrep_sst_donate_cb(): appending data "
|
|
"directory failed: %d", ret);
|
|
return WSREP_CB_FAILURE;
|
|
}
|
|
}
|
|
|
|
sst_donor_completed= false;
|
|
pthread_t monitor;
|
|
|
|
ret= mysql_thread_create (key_wsrep_sst_donor_monitor, &monitor, NULL, wsrep_sst_donor_monitor_thread, NULL);
|
|
|
|
if (ret)
|
|
{
|
|
WSREP_ERROR("sst_donate: mysql_thread_create() failed: %d (%s)",
|
|
ret, strerror(ret));
|
|
return WSREP_CB_FAILURE;
|
|
}
|
|
|
|
ret= sst_donate_other(method, addr, current_gtid, bypass, auth, env());
|
|
|
|
return (ret >= 0 ? WSREP_CB_SUCCESS : WSREP_CB_FAILURE);
|
|
}
|