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mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
This commit is contained in:
Brave Galera Crew
2019-01-23 15:30:00 +04:00
committed by Sergey Vojtovich
parent 382115b992
commit 36a2a185fe
791 changed files with 28035 additions and 8865 deletions

View File

@ -28,8 +28,6 @@
ulong wsrep_reject_queries;
static long wsrep_prev_slave_threads = wsrep_slave_threads;
int wsrep_init_vars()
{
wsrep_provider = my_strdup(WSREP_NONE, MYF(MY_WME));
@ -53,7 +51,7 @@ bool wsrep_on_update (sys_var *self, THD* thd, enum_var_type var_type)
{
if (var_type == OPT_GLOBAL) {
// FIXME: this variable probably should be changed only per session
thd->variables.wsrep_on = global_system_variables.wsrep_on;
thd->variables.wsrep_on= global_system_variables.wsrep_on;
}
return false;
@ -68,8 +66,8 @@ bool wsrep_on_check(sys_var *self, THD* thd, set_var* var)
if (new_wsrep_on && innodb_hton_ptr && innodb_lock_schedule_algorithm != 0) {
my_message(ER_WRONG_ARGUMENTS, " WSREP (galera) can't be enabled "
"if innodb_lock_schedule_algorithm=VATS. Please configure"
" innodb_lock_schedule_algorithm=FCFS and restart.", MYF(0));
"if innodb_lock_schedule_algorithm=VATS. Please configure"
" innodb_lock_schedule_algorithm=FCFS and restart.", MYF(0));
return true;
}
return false;
@ -77,10 +75,6 @@ bool wsrep_on_check(sys_var *self, THD* thd, set_var* var)
bool wsrep_causal_reads_update (sys_var *self, THD* thd, enum_var_type var_type)
{
// global setting should not affect session setting.
// if (var_type == OPT_GLOBAL) {
// thd->variables.wsrep_causal_reads = global_system_variables.wsrep_causal_reads;
// }
if (thd->variables.wsrep_causal_reads) {
thd->variables.wsrep_sync_wait |= WSREP_SYNC_WAIT_BEFORE_READ;
} else {
@ -99,15 +93,11 @@ bool wsrep_causal_reads_update (sys_var *self, THD* thd, enum_var_type var_type)
bool wsrep_sync_wait_update (sys_var* self, THD* thd, enum_var_type var_type)
{
// global setting should not affect session setting.
// if (var_type == OPT_GLOBAL) {
// thd->variables.wsrep_sync_wait = global_system_variables.wsrep_sync_wait;
// }
thd->variables.wsrep_causal_reads = thd->variables.wsrep_sync_wait &
thd->variables.wsrep_causal_reads= thd->variables.wsrep_sync_wait &
WSREP_SYNC_WAIT_BEFORE_READ;
// update global settings too
global_system_variables.wsrep_causal_reads = global_system_variables.wsrep_sync_wait &
global_system_variables.wsrep_causal_reads= global_system_variables.wsrep_sync_wait &
WSREP_SYNC_WAIT_BEFORE_READ;
return false;
@ -129,7 +119,7 @@ bool wsrep_start_position_verify (const char* start_str)
ssize_t uuid_len;
// Check whether it has minimum acceptable length.
start_len = strlen (start_str);
start_len= strlen (start_str);
if (start_len < 34)
return true;
@ -137,7 +127,7 @@ bool wsrep_start_position_verify (const char* start_str)
Parse the input to check whether UUID length is acceptable
and seqno has been provided.
*/
uuid_len = wsrep_uuid_scan (start_str, start_len, &uuid);
uuid_len= wsrep_uuid_scan (start_str, start_len, &uuid);
if (uuid_len < 0 || (start_len - uuid_len) < 2)
return true;
@ -157,19 +147,18 @@ bool wsrep_start_position_verify (const char* start_str)
static
bool wsrep_set_local_position(const char* const value, size_t length,
bool const sst)
bool wsrep_set_local_position(THD* thd, const char* const value,
size_t length, bool const sst)
{
wsrep_uuid_t uuid;
size_t const uuid_len = wsrep_uuid_scan(value, length, &uuid);
wsrep_seqno_t const seqno = strtoll(value + uuid_len + 1, NULL, 10);
size_t const uuid_len= wsrep_uuid_scan(value, length, &uuid);
wsrep_seqno_t const seqno= strtoll(value + uuid_len + 1, NULL, 10);
if (sst) {
return wsrep_sst_received (wsrep, uuid, seqno, NULL, 0, false);
wsrep_sst_received (thd, uuid, seqno, NULL, 0);
} else {
// initialization
local_uuid = uuid;
local_seqno = seqno;
local_uuid= uuid;
local_seqno= seqno;
}
return false;
}
@ -194,7 +183,7 @@ bool wsrep_start_position_check (sys_var *self, THD* thd, set_var* var)
As part of further verification, we try to update the value and catch
errors (if any).
*/
if (wsrep_set_local_position(var->save_result.string_value.str,
if (wsrep_set_local_position(thd, var->save_result.string_value.str,
var->save_result.string_value.length,
true))
{
@ -226,7 +215,7 @@ bool wsrep_start_position_init (const char* val)
return true;
}
if (wsrep_set_local_position (val, strlen(val), false))
if (wsrep_set_local_position (NULL, val, strlen(val), false))
{
WSREP_ERROR("Failed to set initial wsep_start_position: %s", val);
return true;
@ -263,25 +252,23 @@ end:
static bool refresh_provider_options()
{
DBUG_ASSERT(wsrep);
WSREP_DEBUG("refresh_provider_options: %s",
(wsrep_provider_options) ? wsrep_provider_options : "null");
char* opts= wsrep->options_get(wsrep);
if (opts)
try
{
wsrep_provider_options_init(opts);
std::string opts= Wsrep_server_state::instance().provider().options();
wsrep_provider_options_init(opts.c_str());
get_provider_option_value(wsrep_provider_options,
(char*)"repl.max_ws_size",
&wsrep_max_ws_size);
free(opts);
return false;
}
else
catch (...)
{
WSREP_ERROR("Failed to get provider options");
return true;
}
return false;
}
static int wsrep_provider_verify (const char* provider_str)
@ -332,8 +319,6 @@ bool wsrep_provider_update (sys_var *self, THD* thd, enum_var_type type)
{
bool rcode= false;
bool wsrep_on_saved= thd->variables.wsrep_on;
thd->variables.wsrep_on= false;
WSREP_DEBUG("wsrep_provider_update: %s", wsrep_provider);
@ -346,7 +331,12 @@ bool wsrep_provider_update (sys_var *self, THD* thd, enum_var_type type)
*/
mysql_mutex_unlock(&LOCK_global_system_variables);
wsrep_stop_replication(thd);
mysql_mutex_lock(&LOCK_global_system_variables);
/* provider status variables are allocated in provider library
and need to freed here, otherwise a dangling reference to
wsrep_status_vars would remain in THD
*/
wsrep_free_status(thd);
if (wsrep_inited == 1)
wsrep_deinit(false);
@ -357,17 +347,17 @@ bool wsrep_provider_update (sys_var *self, THD* thd, enum_var_type type)
if (wsrep_init())
{
my_error(ER_CANT_OPEN_LIBRARY, MYF(0), tmp, my_error, "wsrep_init failed");
rcode = true;
rcode= true;
}
free(tmp);
// we sure don't want to use old address with new provider
wsrep_cluster_address_init(NULL);
wsrep_provider_options_init(NULL);
if (!rcode)
refresh_provider_options();
thd->variables.wsrep_on= wsrep_on_saved;
refresh_provider_options();
mysql_mutex_lock(&LOCK_global_system_variables);
return rcode;
}
@ -385,12 +375,12 @@ void wsrep_provider_init (const char* value)
}
if (wsrep_provider) my_free((void *)wsrep_provider);
wsrep_provider = my_strdup(value, MYF(0));
wsrep_provider= my_strdup(value, MYF(0));
}
bool wsrep_provider_options_check(sys_var *self, THD* thd, set_var* var)
{
if (wsrep == NULL)
if (!WSREP_ON)
{
my_message(ER_WRONG_ARGUMENTS, "WSREP (galera) not started", MYF(0));
return true;
@ -400,9 +390,9 @@ bool wsrep_provider_options_check(sys_var *self, THD* thd, set_var* var)
bool wsrep_provider_options_update(sys_var *self, THD* thd, enum_var_type type)
{
DBUG_ASSERT(wsrep);
wsrep_status_t ret= wsrep->options_set(wsrep, wsrep_provider_options);
if (ret != WSREP_OK)
enum wsrep::provider::status ret=
Wsrep_server_state::instance().provider().options(wsrep_provider_options);
if (ret)
{
WSREP_ERROR("Set options returned %d", ret);
refresh_provider_options();
@ -415,7 +405,7 @@ void wsrep_provider_options_init(const char* value)
{
if (wsrep_provider_options && wsrep_provider_options != value)
my_free((void *)wsrep_provider_options);
wsrep_provider_options = (value) ? my_strdup(value, MYF(0)) : NULL;
wsrep_provider_options= (value) ? my_strdup(value, MYF(0)) : NULL;
}
bool wsrep_reject_queries_update(sys_var *self, THD* thd, enum_var_type type)
@ -469,18 +459,12 @@ bool wsrep_cluster_address_check (sys_var *self, THD* thd, set_var* var)
bool wsrep_cluster_address_update (sys_var *self, THD* thd, enum_var_type type)
{
bool wsrep_on_saved;
/* Do not proceed if wsrep provider is not loaded. */
if (!wsrep)
if (!Wsrep_server_state::instance().is_provider_loaded())
{
WSREP_INFO("wsrep provider is not loaded, can't re(start) replication.");
WSREP_INFO("WSREP (galera) provider is not loaded, can't re(start) replication.");
return false;
}
wsrep_on_saved= thd->variables.wsrep_on;
thd->variables.wsrep_on= false;
/* stop replication is heavy operation, and includes closing all client
connections. Closing clients may need to get LOCK_global_system_variables
at least in MariaDB.
@ -491,13 +475,6 @@ bool wsrep_cluster_address_update (sys_var *self, THD* thd, enum_var_type type)
mysql_mutex_unlock(&LOCK_global_system_variables);
wsrep_stop_replication(thd);
/*
Unlock and lock LOCK_wsrep_slave_threads to maintain lock order & avoid
any potential deadlock.
*/
mysql_mutex_unlock(&LOCK_wsrep_slave_threads);
mysql_mutex_lock(&LOCK_global_system_variables);
mysql_mutex_lock(&LOCK_wsrep_slave_threads);
if (wsrep_start_replication())
{
@ -505,7 +482,13 @@ bool wsrep_cluster_address_update (sys_var *self, THD* thd, enum_var_type type)
wsrep_create_appliers(wsrep_slave_threads);
}
thd->variables.wsrep_on= wsrep_on_saved;
/* locking order to be enforced is:
1. LOCK_global_system_variables
2. LOCK_wsrep_slave_threads
*/
mysql_mutex_unlock(&LOCK_wsrep_slave_threads);
mysql_mutex_lock(&LOCK_global_system_variables);
mysql_mutex_lock(&LOCK_wsrep_slave_threads);
return false;
}
@ -590,15 +573,14 @@ void wsrep_node_address_init (const char* value)
if (wsrep_node_address && strcmp(wsrep_node_address, value))
my_free ((void*)wsrep_node_address);
wsrep_node_address = (value) ? my_strdup(value, MYF(0)) : NULL;
wsrep_node_address= (value) ? my_strdup(value, MYF(0)) : NULL;
}
static void wsrep_slave_count_change_update ()
{
wsrep_slave_count_change = (wsrep_slave_threads - wsrep_prev_slave_threads);
wsrep_slave_count_change= (wsrep_slave_threads - wsrep_running_threads + 2);
WSREP_DEBUG("Change on slave threads: New %lu old %lu difference %d",
wsrep_slave_threads, wsrep_prev_slave_threads, wsrep_slave_count_change);
wsrep_prev_slave_threads = wsrep_slave_threads;
wsrep_slave_threads, wsrep_running_threads, wsrep_slave_count_change);
}
bool wsrep_slave_threads_update (sys_var *self, THD* thd, enum_var_type type)
@ -607,14 +589,14 @@ bool wsrep_slave_threads_update (sys_var *self, THD* thd, enum_var_type type)
if (wsrep_slave_count_change > 0)
{
wsrep_create_appliers(wsrep_slave_count_change);
wsrep_slave_count_change = 0;
wsrep_slave_count_change= 0;
}
return false;
}
bool wsrep_desync_check (sys_var *self, THD* thd, set_var* var)
{
if (wsrep == NULL)
if (!WSREP_ON)
{
my_message(ER_WRONG_ARGUMENTS, "WSREP (galera) not started", MYF(0));
return true;
@ -639,17 +621,17 @@ bool wsrep_desync_check (sys_var *self, THD* thd, set_var* var)
}
return false;
}
wsrep_status_t ret(WSREP_WARNING);
int ret= 1;
if (new_wsrep_desync) {
ret = wsrep->desync (wsrep);
if (ret != WSREP_OK) {
WSREP_WARN ("SET desync failed %d for schema: %s, query: %s",
ret, thd->get_db(), thd->query());
ret= Wsrep_server_state::instance().provider().desync();
if (ret) {
WSREP_WARN ("SET desync failed %d for schema: %s, query: %s", ret,
thd->db.str, WSREP_QUERY(thd));
my_error (ER_CANNOT_USER, MYF(0), "'desync'", thd->query());
return true;
}
} else {
ret = wsrep->resync (wsrep);
ret= Wsrep_server_state::instance().provider().resync();
if (ret != WSREP_OK) {
WSREP_WARN ("SET resync failed %d for schema: %s, query: %s", ret,
thd->get_db(), thd->query());
@ -662,13 +644,70 @@ bool wsrep_desync_check (sys_var *self, THD* thd, set_var* var)
bool wsrep_desync_update (sys_var *self, THD* thd, enum_var_type type)
{
DBUG_ASSERT(wsrep);
return false;
}
bool wsrep_trx_fragment_size_check (sys_var *self, THD* thd, set_var* var)
{
if (var->value == NULL) {
return false;
}
const ulong new_trx_fragment_size= var->value->val_uint();
if (!WSREP(thd) && new_trx_fragment_size > 0) {
push_warning (thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_VALUE_FOR_VAR,
"Cannot set 'wsrep_trx_fragment_size' to a value other than "
"0 because wsrep is switched off.");
return true;
}
if (new_trx_fragment_size > 0 && !wsrep_provider_is_SR_capable()) {
push_warning (thd, Sql_condition::WARN_LEVEL_WARN,
ER_WRONG_VALUE_FOR_VAR,
"Cannot set 'wsrep_trx_fragment_size' to a value other than "
"0 because the wsrep_provider does not support streaming "
"replication.");
return true;
}
return false;
}
bool wsrep_trx_fragment_size_update(sys_var* self, THD *thd, enum_var_type)
{
WSREP_DEBUG("wsrep_trx_fragment_size_update: %llu",
thd->variables.wsrep_trx_fragment_size);
if (thd->variables.wsrep_trx_fragment_size)
{
return thd->wsrep_cs().enable_streaming(
wsrep_fragment_unit(thd->variables.wsrep_trx_fragment_unit),
size_t(thd->variables.wsrep_trx_fragment_size));
}
else
{
thd->wsrep_cs().disable_streaming();
return false;
}
}
bool wsrep_trx_fragment_unit_update(sys_var* self, THD *thd, enum_var_type)
{
WSREP_DEBUG("wsrep_trx_fragment_unit_update: %lu",
thd->variables.wsrep_trx_fragment_unit);
if (thd->variables.wsrep_trx_fragment_size)
{
return thd->wsrep_cs().enable_streaming(
wsrep_fragment_unit(thd->variables.wsrep_trx_fragment_unit),
size_t(thd->variables.wsrep_trx_fragment_size));
}
return false;
}
bool wsrep_max_ws_size_check(sys_var *self, THD* thd, set_var* var)
{
if (wsrep == NULL)
if (!WSREP_ON)
{
my_message(ER_WRONG_ARGUMENTS, "WSREP (galera) not started", MYF(0));
return true;
@ -676,36 +715,35 @@ bool wsrep_max_ws_size_check(sys_var *self, THD* thd, set_var* var)
return false;
}
bool wsrep_max_ws_size_update (sys_var *self, THD *thd, enum_var_type)
bool wsrep_max_ws_size_update(sys_var *self, THD *thd, enum_var_type)
{
DBUG_ASSERT(wsrep);
char max_ws_size_opt[128];
my_snprintf(max_ws_size_opt, sizeof(max_ws_size_opt),
"repl.max_ws_size=%lu", wsrep_max_ws_size);
wsrep_status_t ret= wsrep->options_set(wsrep, max_ws_size_opt);
if (ret != WSREP_OK)
"repl.max_ws_size=%d", wsrep_max_ws_size);
enum wsrep::provider::status ret= Wsrep_server_state::instance().provider().options(max_ws_size_opt);
if (ret)
{
WSREP_ERROR("Set options returned %d", ret);
refresh_provider_options();
return true;
}
return refresh_provider_options();
}
#if UNUSED /* eaec266eb16c (Sergei Golubchik 2014-09-28) */
static SHOW_VAR wsrep_status_vars[]=
{
{"connected", (char*) &wsrep_connected, SHOW_BOOL},
{"ready", (char*) &wsrep_ready, SHOW_BOOL},
{"ready", (char*) &wsrep_show_ready, SHOW_FUNC},
{"cluster_state_uuid",(char*) &wsrep_cluster_state_uuid,SHOW_CHAR_PTR},
{"cluster_conf_id", (char*) &wsrep_cluster_conf_id, SHOW_LONGLONG},
{"cluster_status", (char*) &wsrep_cluster_status, SHOW_CHAR_PTR},
{"cluster_size", (char*) &wsrep_cluster_size, SHOW_LONG_NOFLUSH},
{"local_index", (char*) &wsrep_local_index, SHOW_LONG_NOFLUSH},
{"local_bf_aborts", (char*) &wsrep_show_bf_aborts, SHOW_SIMPLE_FUNC},
{"local_bf_aborts", (char*) &wsrep_show_bf_aborts, SHOW_FUNC},
{"provider_name", (char*) &wsrep_provider_name, SHOW_CHAR_PTR},
{"provider_version", (char*) &wsrep_provider_version, SHOW_CHAR_PTR},
{"provider_vendor", (char*) &wsrep_provider_vendor, SHOW_CHAR_PTR},
{"wsrep_provider_capabilities", (char*) &wsrep_provider_capabilities, SHOW_CHAR_PTR},
{"thread_count", (char*) &wsrep_running_threads, SHOW_LONG_NOFLUSH}
};
@ -713,49 +751,90 @@ static int show_var_cmp(const void *var1, const void *var2)
{
return strcasecmp(((SHOW_VAR*)var1)->name, ((SHOW_VAR*)var2)->name);
}
int wsrep_show_status (THD *thd, SHOW_VAR *var, char *buff,
enum enum_var_type scope)
#endif /* UNUSED */
/*
* Status variables stuff below
*/
static inline void
wsrep_assign_to_mysql (SHOW_VAR* mysql, wsrep_stats_var* wsrep_var)
{
uint i, maxi= SHOW_VAR_FUNC_BUFF_SIZE / sizeof(*var) - 1;
SHOW_VAR *v= (SHOW_VAR *)buff;
mysql->name= wsrep_var->name;
switch (wsrep_var->type) {
case WSREP_VAR_INT64:
mysql->value= (char*) &wsrep_var->value._int64;
mysql->type= SHOW_LONGLONG;
break;
case WSREP_VAR_STRING:
mysql->value= (char*) &wsrep_var->value._string;
mysql->type= SHOW_CHAR_PTR;
break;
case WSREP_VAR_DOUBLE:
mysql->value= (char*) &wsrep_var->value._double;
mysql->type= SHOW_DOUBLE;
break;
}
}
var->type= SHOW_ARRAY;
var->value= buff;
#if DYNAMIC
// somehow this mysql status thing works only with statically allocated arrays.
static SHOW_VAR* mysql_status_vars= NULL;
static int mysql_status_len= -1;
#else
static SHOW_VAR mysql_status_vars[512 + 1];
static const int mysql_status_len= 512;
#endif
for (i=0; i < array_elements(wsrep_status_vars); i++)
*v++= wsrep_status_vars[i];
static void export_wsrep_status_to_mysql(THD* thd)
{
int wsrep_status_len, i;
DBUG_ASSERT(i < maxi);
thd->wsrep_status_vars= Wsrep_server_state::instance().status();
if (wsrep != NULL)
{
wsrep_stats_var* stats= wsrep->stats_get(wsrep);
for (wsrep_stats_var *sv= stats;
i < maxi && sv && sv->name; i++,
sv++, v++)
{
v->name = thd->strdup(sv->name);
switch (sv->type) {
case WSREP_VAR_INT64:
v->value = (char*)thd->memdup(&sv->value._integer64, sizeof(longlong));
v->type = SHOW_LONGLONG;
break;
case WSREP_VAR_STRING:
v->value = thd->strdup(sv->value._string);
v->type = SHOW_CHAR;
break;
case WSREP_VAR_DOUBLE:
v->value = (char*)thd->memdup(&sv->value._double, sizeof(double));
v->type = SHOW_DOUBLE;
break;
}
wsrep_status_len= thd->wsrep_status_vars.size();
#if DYNAMIC
if (wsrep_status_len != mysql_status_len) {
void* tmp= realloc (mysql_status_vars,
(wsrep_status_len + 1) * sizeof(SHOW_VAR));
if (!tmp) {
sql_print_error ("Out of memory for wsrep status variables."
"Number of variables: %d", wsrep_status_len);
return;
}
wsrep->stats_free(wsrep, stats);
mysql_status_len= wsrep_status_len;
mysql_status_vars= (SHOW_VAR*)tmp;
}
/* @TODO: fix this: */
#else
if (mysql_status_len < wsrep_status_len) wsrep_status_len= mysql_status_len;
#endif
for (i= 0; i < wsrep_status_len; i++)
{
mysql_status_vars[i].name= (char*)thd->wsrep_status_vars[i].name().c_str();
mysql_status_vars[i].value= (char*)thd->wsrep_status_vars[i].value().c_str();
mysql_status_vars[i].type= SHOW_CHAR;
}
my_qsort(buff, i, sizeof(*v), show_var_cmp);
mysql_status_vars[wsrep_status_len].name = NullS;
mysql_status_vars[wsrep_status_len].value = NullS;
mysql_status_vars[wsrep_status_len].type = SHOW_LONG;
}
v->name= 0; // terminator
int wsrep_show_status (THD *thd, SHOW_VAR *var, char *buff)
{
if (WSREP_ON)
{
export_wsrep_status_to_mysql(thd);
var->type= SHOW_ARRAY;
var->value= (char *) &mysql_status_vars;
}
return 0;
}
void wsrep_free_status (THD* thd)
{
thd->wsrep_status_vars.clear();
}