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wsrep_mysqld.cc
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wsrep_mysqld.cc
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/* Copyright 2008-2015 Codership Oy <http://www.codership.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.x1
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#include "sql_plugin.h" /* wsrep_plugins_pre_init() */
#include "my_global.h"
#include "wsrep_server_state.h"
#include "mariadb.h"
#include <mysqld.h>
#include <transaction.h>
#include <sql_class.h>
#include <sql_parse.h>
#include <sql_base.h> /* find_temporary_table() */
#include "slave.h"
#include "rpl_mi.h"
#include "sql_repl.h"
#include "rpl_filter.h"
#include "sql_callback.h"
#include "sp_head.h"
#include "sql_show.h"
#include "sp.h"
#include "wsrep_priv.h"
#include "wsrep_thd.h"
#include "wsrep_sst.h"
#include "wsrep_utils.h"
#include "wsrep_var.h"
#include "wsrep_binlog.h"
#include "wsrep_applier.h"
#include "wsrep_schema.h"
#include "wsrep_xid.h"
#include "wsrep_trans_observer.h"
#include "mysql/service_wsrep.h"
#include <cstdio>
#include <cstdlib>
#include <string>
#include "log_event.h"
#include <sstream>
/* wsrep-lib */
Wsrep_server_state* Wsrep_server_state::m_instance;
my_bool wsrep_emulate_bin_log= FALSE; // activating parts of binlog interface
my_bool wsrep_preordered_opt= FALSE;
/* Streaming Replication */
const char *wsrep_fragment_units[]= { "bytes", "rows", "statements", NullS };
const char *wsrep_SR_store_types[]= { "none", "table", NullS };
/*
* Begin configuration options
*/
extern my_bool plugins_are_initialized;
extern uint kill_cached_threads;
extern mysql_cond_t COND_thread_cache;
/* System variables. */
const char *wsrep_provider;
const char *wsrep_provider_options;
const char *wsrep_cluster_address;
const char *wsrep_cluster_name;
const char *wsrep_node_name;
const char *wsrep_node_address;
const char *wsrep_node_incoming_address;
const char *wsrep_start_position;
const char *wsrep_data_home_dir;
const char *wsrep_dbug_option;
const char *wsrep_notify_cmd;
ulong wsrep_debug; // Debug level logging
my_bool wsrep_convert_LOCK_to_trx; // Convert locking sessions to trx
my_bool wsrep_auto_increment_control; // Control auto increment variables
my_bool wsrep_drupal_282555_workaround; // Retry autoinc insert after dupkey
my_bool wsrep_certify_nonPK; // Certify, even when no primary key
ulong wsrep_certification_rules = WSREP_CERTIFICATION_RULES_STRICT;
my_bool wsrep_recovery; // Recovery
my_bool wsrep_replicate_myisam; // Enable MyISAM replication
my_bool wsrep_log_conflicts;
my_bool wsrep_load_data_splitting= 0; // Commit load data every 10K intervals
my_bool wsrep_slave_UK_checks; // Slave thread does UK checks
my_bool wsrep_slave_FK_checks; // Slave thread does FK checks
my_bool wsrep_restart_slave; // Should mysql slave thread be
// restarted, when node joins back?
my_bool wsrep_desync; // De(re)synchronize the node from the
// cluster
long wsrep_slave_threads; // No. of slave appliers threads
ulong wsrep_retry_autocommit; // Retry aborted autocommit trx
ulong wsrep_max_ws_size; // Max allowed ws (RBR buffer) size
ulong wsrep_max_ws_rows; // Max number of rows in ws
ulong wsrep_forced_binlog_format;
ulong wsrep_mysql_replication_bundle;
bool wsrep_gtid_mode; // Enable WSREP native GTID support
Wsrep_gtid_server wsrep_gtid_server;
/* Other configuration variables and their default values. */
my_bool wsrep_incremental_data_collection= 0; // Incremental data collection
my_bool wsrep_restart_slave_activated= 0; // Node has dropped, and slave
// restart will be needed
bool wsrep_new_cluster= false; // Bootstrap the cluster?
int wsrep_slave_count_change= 0; // No. of appliers to stop/start
int wsrep_to_isolation= 0; // No. of active TO isolation threads
long wsrep_max_protocol_version= 4; // Maximum protocol version to use
long int wsrep_protocol_version= wsrep_max_protocol_version;
ulong wsrep_trx_fragment_unit= WSREP_FRAG_BYTES;
// unit for fragment size
ulong wsrep_SR_store_type= WSREP_SR_STORE_TABLE;
uint wsrep_ignore_apply_errors= 0;
/*
* End configuration options
*/
/*
* Other wsrep global variables.
*/
mysql_mutex_t LOCK_wsrep_ready;
mysql_cond_t COND_wsrep_ready;
mysql_mutex_t LOCK_wsrep_sst;
mysql_cond_t COND_wsrep_sst;
mysql_mutex_t LOCK_wsrep_sst_init;
mysql_cond_t COND_wsrep_sst_init;
mysql_mutex_t LOCK_wsrep_replaying;
mysql_cond_t COND_wsrep_replaying;
mysql_mutex_t LOCK_wsrep_slave_threads;
mysql_cond_t COND_wsrep_slave_threads;
mysql_mutex_t LOCK_wsrep_gtid_wait_upto;
mysql_mutex_t LOCK_wsrep_cluster_config;
mysql_mutex_t LOCK_wsrep_desync;
mysql_mutex_t LOCK_wsrep_config_state;
mysql_mutex_t LOCK_wsrep_group_commit;
mysql_mutex_t LOCK_wsrep_SR_pool;
mysql_mutex_t LOCK_wsrep_SR_store;
mysql_mutex_t LOCK_wsrep_joiner_monitor;
mysql_mutex_t LOCK_wsrep_donor_monitor;
mysql_cond_t COND_wsrep_joiner_monitor;
mysql_cond_t COND_wsrep_donor_monitor;
int wsrep_replaying= 0;
ulong wsrep_running_threads = 0; // # of currently running wsrep
// # threads
ulong wsrep_running_applier_threads = 0; // # of running applier threads
ulong wsrep_running_rollbacker_threads = 0; // # of running
// # rollbacker threads
ulong my_bind_addr;
#ifdef HAVE_PSI_INTERFACE
PSI_mutex_key
key_LOCK_wsrep_replaying, key_LOCK_wsrep_ready, key_LOCK_wsrep_sst,
key_LOCK_wsrep_sst_thread, key_LOCK_wsrep_sst_init,
key_LOCK_wsrep_slave_threads, key_LOCK_wsrep_gtid_wait_upto,
key_LOCK_wsrep_desync,
key_LOCK_wsrep_config_state, key_LOCK_wsrep_cluster_config,
key_LOCK_wsrep_group_commit,
key_LOCK_wsrep_SR_pool,
key_LOCK_wsrep_SR_store,
key_LOCK_wsrep_thd_queue,
key_LOCK_wsrep_joiner_monitor,
key_LOCK_wsrep_donor_monitor;
PSI_cond_key key_COND_wsrep_thd,
key_COND_wsrep_replaying, key_COND_wsrep_ready, key_COND_wsrep_sst,
key_COND_wsrep_sst_init, key_COND_wsrep_sst_thread,
key_COND_wsrep_thd_queue, key_COND_wsrep_slave_threads, key_COND_wsrep_gtid_wait_upto,
key_COND_wsrep_joiner_monitor, key_COND_wsrep_donor_monitor;
PSI_file_key key_file_wsrep_gra_log;
static PSI_mutex_info wsrep_mutexes[]=
{
{ &key_LOCK_wsrep_ready, "LOCK_wsrep_ready", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_sst, "LOCK_wsrep_sst", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_sst_thread, "wsrep_sst_thread", 0},
{ &key_LOCK_wsrep_sst_init, "LOCK_wsrep_sst_init", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_sst, "LOCK_wsrep_sst", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_replaying, "LOCK_wsrep_replaying", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_slave_threads, "LOCK_wsrep_slave_threads", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_gtid_wait_upto, "LOCK_wsrep_gtid_wait_upto", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_cluster_config, "LOCK_wsrep_cluster_config", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_desync, "LOCK_wsrep_desync", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_config_state, "LOCK_wsrep_config_state", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_group_commit, "LOCK_wsrep_group_commit", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_SR_pool, "LOCK_wsrep_SR_pool", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_SR_store, "LOCK_wsrep_SR_store", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_joiner_monitor, "LOCK_wsrep_joiner_monitor", PSI_FLAG_GLOBAL},
{ &key_LOCK_wsrep_donor_monitor, "LOCK_wsrep_donor_monitor", PSI_FLAG_GLOBAL}
};
static PSI_cond_info wsrep_conds[]=
{
{ &key_COND_wsrep_ready, "COND_wsrep_ready", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_sst, "COND_wsrep_sst", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_sst_init, "COND_wsrep_sst_init", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_sst_thread, "wsrep_sst_thread", 0},
{ &key_COND_wsrep_thd, "THD::COND_wsrep_thd", 0},
{ &key_COND_wsrep_replaying, "COND_wsrep_replaying", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_slave_threads, "COND_wsrep_wsrep_slave_threads", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_gtid_wait_upto, "COND_wsrep_gtid_wait_upto", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_joiner_monitor, "COND_wsrep_joiner_monitor", PSI_FLAG_GLOBAL},
{ &key_COND_wsrep_donor_monitor, "COND_wsrep_donor_monitor", PSI_FLAG_GLOBAL}
};
static PSI_file_info wsrep_files[]=
{
{ &key_file_wsrep_gra_log, "wsrep_gra_log", 0}
};
PSI_thread_key key_wsrep_sst_joiner, key_wsrep_sst_donor,
key_wsrep_rollbacker, key_wsrep_applier,
key_wsrep_sst_joiner_monitor, key_wsrep_sst_donor_monitor;
static PSI_thread_info wsrep_threads[]=
{
{&key_wsrep_sst_joiner, "wsrep_sst_joiner_thread", PSI_FLAG_GLOBAL},
{&key_wsrep_sst_donor, "wsrep_sst_donor_thread", PSI_FLAG_GLOBAL},
{&key_wsrep_rollbacker, "wsrep_rollbacker_thread", PSI_FLAG_GLOBAL},
{&key_wsrep_applier, "wsrep_applier_thread", PSI_FLAG_GLOBAL},
{&key_wsrep_sst_joiner_monitor, "wsrep_sst_joiner_monitor", PSI_FLAG_GLOBAL},
{&key_wsrep_sst_donor_monitor, "wsrep_sst_donor_monitor", PSI_FLAG_GLOBAL}
};
#endif /* HAVE_PSI_INTERFACE */
my_bool wsrep_inited= 0; // initialized ?
static wsrep_uuid_t node_uuid= WSREP_UUID_UNDEFINED;
static char cluster_uuid_str[40]= { 0, };
static char provider_name[256]= { 0, };
static char provider_version[256]= { 0, };
static char provider_vendor[256]= { 0, };
/*
* Wsrep status variables. LOCK_status must be locked When modifying
* these variables,
*/
my_bool wsrep_connected = FALSE;
my_bool wsrep_ready = FALSE;
const char* wsrep_cluster_state_uuid= cluster_uuid_str;
long long wsrep_cluster_conf_id = WSREP_SEQNO_UNDEFINED;
const char* wsrep_cluster_status = "Disconnected";
long wsrep_cluster_size = 0;
long wsrep_local_index = -1;
long long wsrep_local_bf_aborts = 0;
const char* wsrep_provider_name = provider_name;
const char* wsrep_provider_version = provider_version;
const char* wsrep_provider_vendor = provider_vendor;
char* wsrep_provider_capabilities = NULL;
char* wsrep_cluster_capabilities = NULL;
/* End wsrep status variables */
wsp::Config_state *wsrep_config_state;
wsrep_uuid_t local_uuid = WSREP_UUID_UNDEFINED;
wsrep_seqno_t local_seqno = WSREP_SEQNO_UNDEFINED;
wsp::node_status local_status;
/*
*/
Wsrep_schema *wsrep_schema= 0;
static void wsrep_log_cb(wsrep::log::level level, const char *msg)
{
/*
Silence all wsrep related logging from lib and provider if
wsrep is not enabled.
*/
if (WSREP_ON)
{
switch (level) {
case wsrep::log::info:
sql_print_information("WSREP: %s", msg);
break;
case wsrep::log::warning:
sql_print_warning("WSREP: %s", msg);
break;
case wsrep::log::error:
sql_print_error("WSREP: %s", msg);
break;
case wsrep::log::debug:
if (wsrep_debug) sql_print_information ("[Debug] WSREP: %s", msg);
default:
break;
}
}
}
void wsrep_init_gtid()
{
wsrep_server_gtid_t stored_gtid= wsrep_get_SE_checkpoint<wsrep_server_gtid_t>();
if (stored_gtid.server_id == 0)
{
rpl_gtid wsrep_last_gtid;
stored_gtid.domain_id= wsrep_gtid_server.domain_id;
if (mysql_bin_log.is_open() &&
mysql_bin_log.lookup_domain_in_binlog_state(stored_gtid.domain_id,
&wsrep_last_gtid))
{
stored_gtid.server_id= wsrep_last_gtid.server_id;
stored_gtid.seqno= wsrep_last_gtid.seq_no;
}
else
{
stored_gtid.server_id= global_system_variables.server_id;
stored_gtid.seqno= 0;
}
}
wsrep_gtid_server.gtid(stored_gtid);
}
bool wsrep_get_binlog_gtid_seqno(wsrep_server_gtid_t& gtid)
{
rpl_gtid binlog_gtid;
int ret= 0;
if (mysql_bin_log.is_open() &&
mysql_bin_log.find_in_binlog_state(gtid.domain_id,
gtid.server_id,
&binlog_gtid))
{
gtid.domain_id= binlog_gtid.domain_id;
gtid.server_id= binlog_gtid.server_id;
gtid.seqno= binlog_gtid.seq_no;
ret= 1;
}
return ret;
}
bool wsrep_check_gtid_seqno(const uint32& domain, const uint32& server,
uint64& seqno)
{
if (domain == wsrep_gtid_server.domain_id &&
server == wsrep_gtid_server.server_id)
{
if (wsrep_gtid_server.seqno_committed() < seqno) return 1;
return 0;
}
return 0;
}
void wsrep_init_sidno(const wsrep::id& uuid)
{
/*
Protocol versions starting from 4 use group gtid as it is.
For lesser protocol versions generate new Sid map entry from inverted
uuid.
*/
rpl_gtid sid;
if (wsrep_protocol_version >= 4)
{
memcpy((void*)&sid, (const uchar*)uuid.data(),16);
}
else
{
wsrep_uuid_t ltid_uuid;
for (size_t i= 0; i < sizeof(ltid_uuid.data); ++i)
{
ltid_uuid.data[i]= ~((const uchar*)uuid.data())[i];
}
memcpy((void*)&sid, (const uchar*)ltid_uuid.data,16);
}
#ifdef GTID_SUPPORT
global_sid_lock->wrlock();
wsrep_sidno= global_sid_map->add_sid(sid);
WSREP_INFO("Initialized wsrep sidno %d", wsrep_sidno);
global_sid_lock->unlock();
#endif
}
void wsrep_init_schema()
{
DBUG_ASSERT(!wsrep_schema);
WSREP_INFO("wsrep_init_schema_and_SR %p", wsrep_schema);
if (!wsrep_schema)
{
wsrep_schema= new Wsrep_schema();
if (wsrep_schema->init())
{
WSREP_ERROR("Failed to init wsrep schema");
unireg_abort(1);
}
}
}
void wsrep_deinit_schema()
{
delete wsrep_schema;
wsrep_schema= 0;
}
void wsrep_recover_sr_from_storage(THD *orig_thd)
{
switch (wsrep_SR_store_type)
{
case WSREP_SR_STORE_TABLE:
if (!wsrep_schema)
{
WSREP_ERROR("Wsrep schema not initialized when trying to recover "
"streaming transactions");
unireg_abort(1);
}
if (wsrep_schema->recover_sr_transactions(orig_thd))
{
WSREP_ERROR("Failed to recover SR transactions from schema");
unireg_abort(1);
}
break;
default:
/* */
WSREP_ERROR("Unsupported wsrep SR store type: %lu", wsrep_SR_store_type);
unireg_abort(1);
break;
}
}
/** Export the WSREP provider's capabilities as a human readable string.
* The result is saved in a dynamically allocated string of the form:
* :cap1:cap2:cap3:
*/
static void wsrep_capabilities_export(wsrep_cap_t const cap, char** str)
{
static const char* names[] =
{
/* Keep in sync with wsrep/wsrep_api.h WSREP_CAP_* macros. */
"MULTI_MASTER",
"CERTIFICATION",
"PARALLEL_APPLYING",
"TRX_REPLAY",
"ISOLATION",
"PAUSE",
"CAUSAL_READS",
"CAUSAL_TRX",
"INCREMENTAL_WRITESET",
"SESSION_LOCKS",
"DISTRIBUTED_LOCKS",
"CONSISTENCY_CHECK",
"UNORDERED",
"ANNOTATION",
"PREORDERED",
"STREAMING",
"SNAPSHOT",
"NBO",
};
std::string s;
for (size_t i= 0; i < sizeof(names) / sizeof(names[0]); ++i)
{
if (cap & (1ULL << i))
{
if (s.empty())
{
s= ":";
}
s += names[i];
s += ":";
}
}
/* A read from the string pointed to by *str may be started at any time,
* so it must never point to free(3)d memory or non '\0' terminated string. */
char* const previous= *str;
*str= strdup(s.c_str());
if (previous != NULL)
{
free(previous);
}
}
/* Verifies that SE position is consistent with the group position
* and initializes other variables */
void wsrep_verify_SE_checkpoint(const wsrep_uuid_t& uuid,
wsrep_seqno_t const seqno)
{
}
/*
Wsrep is considered ready if
1) Provider is not loaded (native mode)
2) Server has reached synced state
3) Server is in joiner mode and mysqldump SST method has been
specified
See Wsrep_server_service::log_state_change() for further details.
*/
my_bool wsrep_ready_get (void)
{
if (mysql_mutex_lock (&LOCK_wsrep_ready)) abort();
my_bool ret= wsrep_ready;
mysql_mutex_unlock (&LOCK_wsrep_ready);
return ret;
}
int wsrep_show_ready(THD *thd, SHOW_VAR *var, char *buff)
{
var->type= SHOW_MY_BOOL;
var->value= buff;
*((my_bool *)buff)= wsrep_ready_get();
return 0;
}
void wsrep_update_cluster_state_uuid(const char* uuid)
{
strncpy(cluster_uuid_str, uuid, sizeof(cluster_uuid_str) - 1);
}
static void wsrep_init_position()
{
}
/****************************************************************************
Helpers for wsrep_init()
****************************************************************************/
static std::string wsrep_server_name()
{
std::string ret(wsrep_node_name ? wsrep_node_name : "");
return ret;
}
static std::string wsrep_server_id()
{
/* using empty server_id, which enables view change handler to
set final server_id later on
*/
std::string ret("");
return ret;
}
static std::string wsrep_server_node_address()
{
std::string ret;
if (!wsrep_data_home_dir || strlen(wsrep_data_home_dir) == 0)
wsrep_data_home_dir= mysql_real_data_home;
/* Initialize node address */
if (!wsrep_node_address || !strcmp(wsrep_node_address, ""))
{
char node_addr[512]= {0, };
const size_t node_addr_max= sizeof(node_addr) - 1;
size_t guess_ip_ret= wsrep_guess_ip(node_addr, node_addr_max);
if (!(guess_ip_ret > 0 && guess_ip_ret < node_addr_max))
{
WSREP_WARN("Failed to guess base node address. Set it explicitly via "
"wsrep_node_address.");
}
else
{
ret= node_addr;
}
}
else
{
ret= wsrep_node_address;
}
return ret;
}
static std::string wsrep_server_incoming_address()
{
std::string ret;
const std::string node_addr(wsrep_server_node_address());
char inc_addr[512]= { 0, };
size_t const inc_addr_max= sizeof (inc_addr);
/*
In case wsrep_node_incoming_address is either not set or set to AUTO,
we need to use mysqld's my_bind_addr_str:mysqld_port, lastly fallback
to wsrep_node_address' value if mysqld's bind-address is not set either.
*/
if ((!wsrep_node_incoming_address ||
!strcmp (wsrep_node_incoming_address, WSREP_NODE_INCOMING_AUTO)))
{
bool is_ipv6= false;
unsigned int my_bind_ip= INADDR_ANY; // default if not set
if (my_bind_addr_str && strlen(my_bind_addr_str) &&
strcmp(my_bind_addr_str, "*") != 0)
{
my_bind_ip= wsrep_check_ip(my_bind_addr_str, &is_ipv6);
}
if (INADDR_ANY != my_bind_ip)
{
/*
If its a not a valid address, leave inc_addr as empty string. mysqld
is not listening for client connections on network interfaces.
*/
if (INADDR_NONE != my_bind_ip && INADDR_LOOPBACK != my_bind_ip)
{
const char *fmt= (is_ipv6) ? "[%s]:%u" : "%s:%u";
snprintf(inc_addr, inc_addr_max, fmt, my_bind_addr_str, mysqld_port);
}
}
else /* mysqld binds to 0.0.0.0, try taking IP from wsrep_node_address. */
{
if (node_addr.size())
{
size_t const ip_len_mdb= wsrep_host_len(node_addr.c_str(), node_addr.size());
if (ip_len_mdb + 7 /* :55555\0 */ < inc_addr_max)
{
memcpy (inc_addr, node_addr.c_str(), ip_len_mdb);
snprintf(inc_addr + ip_len_mdb, inc_addr_max - ip_len_mdb, ":%u",
(int)mysqld_port);
}
else
{
WSREP_WARN("Guessing address for incoming client connections: "
"address too long.");
inc_addr[0]= '\0';
}
}
if (!strlen(inc_addr))
{
WSREP_WARN("Guessing address for incoming client connections failed. "
"Try setting wsrep_node_incoming_address explicitly.");
WSREP_INFO("Node addr: %s", node_addr.c_str());
}
}
}
else
{
wsp::Address addr(wsrep_node_incoming_address);
if (!addr.is_valid())
{
WSREP_WARN("Could not parse wsrep_node_incoming_address : %s",
wsrep_node_incoming_address);
goto done;
}
/*
In case port is not specified in wsrep_node_incoming_address, we use
mysqld_port.
*/
int port= (addr.get_port() > 0) ? addr.get_port() : (int) mysqld_port;
const char *fmt= (addr.is_ipv6()) ? "[%s]:%u" : "%s:%u";
snprintf(inc_addr, inc_addr_max, fmt, addr.get_address(), port);
}
done:
ret= wsrep_node_incoming_address;
return ret;
}
static std::string wsrep_server_working_dir()
{
std::string ret;
if (!wsrep_data_home_dir || strlen(wsrep_data_home_dir) == 0)
{
ret= mysql_real_data_home;
}
else
{
ret= wsrep_data_home_dir;
}
return ret;
}
static wsrep::gtid wsrep_server_initial_position()
{
wsrep::gtid ret;
WSREP_DEBUG("Server initial position: %s", wsrep_start_position);
std::istringstream is(wsrep_start_position);
is >> ret;
return ret;
}
/*
Intitialize provider specific status variables
*/
static void wsrep_init_provider_status_variables()
{
wsrep_inited= 1;
const wsrep::provider& provider=
Wsrep_server_state::instance().provider();
strncpy(provider_name,
provider.name().c_str(), sizeof(provider_name) - 1);
strncpy(provider_version,
provider.version().c_str(), sizeof(provider_version) - 1);
strncpy(provider_vendor,
provider.vendor().c_str(), sizeof(provider_vendor) - 1);
}
int wsrep_init_server()
{
wsrep::log::logger_fn(wsrep_log_cb);
try
{
std::string server_name;
std::string server_id;
std::string node_address;
std::string incoming_address;
std::string working_dir;
wsrep::gtid initial_position;
server_name= wsrep_server_name();
server_id= wsrep_server_id();
node_address= wsrep_server_node_address();
incoming_address= wsrep_server_incoming_address();
working_dir= wsrep_server_working_dir();
initial_position= wsrep_server_initial_position();
Wsrep_server_state::init_once(server_name,
incoming_address,
node_address,
working_dir,
initial_position,
wsrep_max_protocol_version);
Wsrep_server_state::instance().debug_log_level(wsrep_debug);
}
catch (const wsrep::runtime_error& e)
{
WSREP_ERROR("Failed to init wsrep server %s", e.what());
return 1;
}
catch (const std::exception& e)
{
WSREP_ERROR("Failed to init wsrep server %s", e.what());
}
return 0;
}
void wsrep_init_globals()
{
wsrep_init_sidno(Wsrep_server_state::instance().connected_gtid().id());
wsrep_init_gtid();
/* Recover last written wsrep gtid */
if (wsrep_new_cluster)
{
wsrep_server_gtid_t gtid= {wsrep_gtid_server.domain_id,
wsrep_gtid_server.server_id, 0};
wsrep_get_binlog_gtid_seqno(gtid);
wsrep_gtid_server.seqno(gtid.seqno);
}
wsrep_init_schema();
if (WSREP_ON)
{
Wsrep_server_state::instance().initialized();
}
}
void wsrep_deinit_server()
{
wsrep_deinit_schema();
Wsrep_server_state::destroy();
}
int wsrep_init()
{
assert(wsrep_provider);
wsrep_init_position();
wsrep_sst_auth_init();
if (strlen(wsrep_provider)== 0 ||
!strcmp(wsrep_provider, WSREP_NONE))
{
// enable normal operation in case no provider is specified
global_system_variables.wsrep_on= 0;
int err= Wsrep_server_state::instance().load_provider(wsrep_provider, wsrep_provider_options ? wsrep_provider_options : "");
if (err)
{
DBUG_PRINT("wsrep",("wsrep::init() failed: %d", err));
WSREP_ERROR("wsrep::init() failed: %d, must shutdown", err);
}
else
wsrep_init_provider_status_variables();
return err;
}
global_system_variables.wsrep_on= 1;
if (wsrep_gtid_mode && opt_bin_log && !opt_log_slave_updates)
{
WSREP_ERROR("Option --log-slave-updates is required if "
"binlog is enabled, GTID mode is on and wsrep provider "
"is specified");
return 1;
}
if (!wsrep_data_home_dir || strlen(wsrep_data_home_dir) == 0)
wsrep_data_home_dir= mysql_real_data_home;
if (Wsrep_server_state::instance().load_provider(wsrep_provider,
wsrep_provider_options))
{
WSREP_ERROR("Failed to load provider");
return 1;
}
if (!wsrep_provider_is_SR_capable() &&
global_system_variables.wsrep_trx_fragment_size > 0)
{
WSREP_ERROR("The WSREP provider (%s) does not support streaming "
"replication but wsrep_trx_fragment_size is set to a "
"value other than 0 (%llu). Cannot continue. Either set "
"wsrep_trx_fragment_size to 0 or use wsrep_provider that "
"supports streaming replication.",
wsrep_provider, global_system_variables.wsrep_trx_fragment_size);
Wsrep_server_state::instance().unload_provider();
return 1;
}
wsrep_init_provider_status_variables();
wsrep_capabilities_export(Wsrep_server_state::instance().provider().capabilities(),
&wsrep_provider_capabilities);
WSREP_DEBUG("SR storage init for: %s",
(wsrep_SR_store_type == WSREP_SR_STORE_TABLE) ? "table" : "void");
return 0;
}
/* Initialize wsrep thread LOCKs and CONDs */
void wsrep_thr_init()
{
DBUG_ENTER("wsrep_thr_init");
wsrep_config_state= new wsp::Config_state;
#ifdef HAVE_PSI_INTERFACE
mysql_mutex_register("sql", wsrep_mutexes, array_elements(wsrep_mutexes));
mysql_cond_register("sql", wsrep_conds, array_elements(wsrep_conds));
mysql_file_register("sql", wsrep_files, array_elements(wsrep_files));
mysql_thread_register("sql", wsrep_threads, array_elements(wsrep_threads));
#endif
mysql_mutex_init(key_LOCK_wsrep_ready, &LOCK_wsrep_ready, MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_ready, &COND_wsrep_ready, NULL);
mysql_mutex_init(key_LOCK_wsrep_sst, &LOCK_wsrep_sst, MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_sst, &COND_wsrep_sst, NULL);
mysql_mutex_init(key_LOCK_wsrep_sst_init, &LOCK_wsrep_sst_init, MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_sst_init, &COND_wsrep_sst_init, NULL);
mysql_mutex_init(key_LOCK_wsrep_replaying, &LOCK_wsrep_replaying, MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_replaying, &COND_wsrep_replaying, NULL);
mysql_mutex_init(key_LOCK_wsrep_slave_threads, &LOCK_wsrep_slave_threads, MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_slave_threads, &COND_wsrep_slave_threads, NULL);
mysql_mutex_init(key_LOCK_wsrep_gtid_wait_upto, &LOCK_wsrep_gtid_wait_upto, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_cluster_config, &LOCK_wsrep_cluster_config, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_desync, &LOCK_wsrep_desync, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_config_state, &LOCK_wsrep_config_state, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_group_commit, &LOCK_wsrep_group_commit, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_SR_pool,
&LOCK_wsrep_SR_pool, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_SR_store,
&LOCK_wsrep_SR_store, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_joiner_monitor,
&LOCK_wsrep_joiner_monitor, MY_MUTEX_INIT_FAST);
mysql_mutex_init(key_LOCK_wsrep_donor_monitor,
&LOCK_wsrep_donor_monitor, MY_MUTEX_INIT_FAST);
mysql_cond_init(key_COND_wsrep_joiner_monitor, &COND_wsrep_joiner_monitor, NULL);
mysql_cond_init(key_COND_wsrep_donor_monitor, &COND_wsrep_donor_monitor, NULL);
DBUG_VOID_RETURN;
}
void wsrep_init_startup (bool sst_first)
{
if (wsrep_init()) unireg_abort(1);
wsrep_thr_lock_init(wsrep_thd_is_BF, wsrep_thd_bf_abort,
wsrep_debug, wsrep_convert_LOCK_to_trx, wsrep_on);
/*
Pre-initialize global_system_variables.table_plugin with a dummy engine
(placeholder) required during the initialization of wsrep threads (THDs).
(see: plugin_thdvar_init())
Note: This only needs to be done for rsync & mariabackup based SST methods.
In case of mysqldump SST method, the wsrep threads are created after the
server plugins & global system variables are initialized.
*/
if (wsrep_before_SE())
wsrep_plugins_pre_init();
/* Skip replication start if dummy wsrep provider is loaded */
if (!strcmp(wsrep_provider, WSREP_NONE)) return;
/* Skip replication start if no cluster address */
if (!wsrep_cluster_address || wsrep_cluster_address[0] == 0) return;
/*
Read value of wsrep_new_cluster before wsrep_start_replication(),
the value is reset to FALSE inside wsrep_start_replication.
*/
if (!wsrep_start_replication()) unireg_abort(1);
wsrep_create_rollbacker();
wsrep_create_appliers(1);
Wsrep_server_state& server_state= Wsrep_server_state::instance();
/*
If the SST happens before server initialization, wait until the server
state reaches initializing. This indicates that
either SST was not necessary or SST has been delivered.
With mysqldump SST (!sst_first) wait until the server reaches
joiner state and procedd to accepting connections.
*/
if (sst_first)
{
server_state.wait_until_state(Wsrep_server_state::s_initializing);
}
else
{
server_state.wait_until_state(Wsrep_server_state::s_joiner);
}
}
void wsrep_deinit(bool free_options)
{
DBUG_ASSERT(wsrep_inited == 1);
WSREP_DEBUG("wsrep_deinit");
Wsrep_server_state::instance().unload_provider();
provider_name[0]= '\0';
provider_version[0]= '\0';
provider_vendor[0]= '\0';
wsrep_inited= 0;
if (wsrep_provider_capabilities != NULL)
{
char* p= wsrep_provider_capabilities;
wsrep_provider_capabilities= NULL;
free(p);
}
if (free_options)
{
wsrep_sst_auth_free();
}
}
/* Destroy wsrep thread LOCKs and CONDs */
void wsrep_thr_deinit()
{
if (!wsrep_config_state)
return; // Never initialized
WSREP_DEBUG("wsrep_thr_deinit");
mysql_mutex_destroy(&LOCK_wsrep_ready);
mysql_cond_destroy(&COND_wsrep_ready);
mysql_mutex_destroy(&LOCK_wsrep_sst);
mysql_cond_destroy(&COND_wsrep_sst);
mysql_mutex_destroy(&LOCK_wsrep_sst_init);
mysql_cond_destroy(&COND_wsrep_sst_init);
mysql_mutex_destroy(&LOCK_wsrep_replaying);
mysql_cond_destroy(&COND_wsrep_replaying);
mysql_mutex_destroy(&LOCK_wsrep_gtid_wait_upto);
mysql_mutex_destroy(&LOCK_wsrep_slave_threads);
mysql_cond_destroy(&COND_wsrep_slave_threads);
mysql_mutex_destroy(&LOCK_wsrep_cluster_config);
mysql_mutex_destroy(&LOCK_wsrep_desync);
mysql_mutex_destroy(&LOCK_wsrep_config_state);
mysql_mutex_destroy(&LOCK_wsrep_group_commit);
mysql_mutex_destroy(&LOCK_wsrep_SR_pool);
mysql_mutex_destroy(&LOCK_wsrep_SR_store);
mysql_mutex_destroy(&LOCK_wsrep_joiner_monitor);
mysql_mutex_destroy(&LOCK_wsrep_donor_monitor);
mysql_cond_destroy(&COND_wsrep_joiner_monitor);
mysql_cond_destroy(&COND_wsrep_donor_monitor);
delete wsrep_config_state;
wsrep_config_state= 0; // Safety
if (wsrep_cluster_capabilities != NULL)
{
char* p= wsrep_cluster_capabilities;
wsrep_cluster_capabilities= NULL;
free(p);
}
}
void wsrep_recover()
{
char uuid_str[40];
if (wsrep_uuid_compare(&local_uuid, &WSREP_UUID_UNDEFINED) == 0 &&
local_seqno == -2)
{
wsrep_uuid_print(&local_uuid, uuid_str, sizeof(uuid_str));
WSREP_INFO("Position %s:%lld given at startup, skipping position recovery",