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MySQL_Thread.cpp
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#include "../deps/json/json.hpp"
using json = nlohmann::json;
#define PROXYJSON
//#define __CLASS_STANDARD_MYSQL_THREAD_H
#include <functional>
#include <vector>
#include "MySQL_HostGroups_Manager.h"
#include "prometheus_helpers.h"
#define MYSQL_THREAD_IMPLEMENTATION
#include "proxysql.h"
#include "cpp.h"
#include "MySQL_Thread.h"
#include <dirent.h>
#include <libgen.h>
#include "re2/re2.h"
#include "re2/regexp.h"
#include "MySQL_Data_Stream.h"
#include "MySQL_Query_Processor.h"
#include "StatCounters.h"
#include "MySQL_PreparedStatement.h"
#include "MySQL_Logger.hpp"
#include <fcntl.h>
using std::vector;
using std::function;
#ifdef DEBUG
static MySQL_Session *sess_stopat;
#endif
#ifdef epoll_create1
#define EPOLL_CREATE epoll_create1(0)
#else
#define EPOLL_CREATE epoll_create(1)
#endif
#define PROXYSQL_LISTEN_LEN 1024
#define MIN_THREADS_FOR_MAINTENANCE 8
/**
* @brief Helper macro to stringify a macro argument.
*
* This macro takes a single argument 'x' and converts it into a string literal.
* It is a helper macro used by the STRINGIFY macro.
*
* @param x The macro argument to be converted into a string.
* @return The string representation of the macro argument.
*/
#define STRINGIFY_HELPER(x) #x
/**
* @brief Macro to stringify a macro argument.
*
* This macro takes a single argument 'x' and converts it into a string literal
* using the STRINGIFY_HELPER macro.
*
* @param x The macro argument to be converted into a string.
* @return The string representation of the macro argument.
*/
#define STRINGIFY(x) STRINGIFY_HELPER(x)
/**
* @brief Refreshes a boolean variable from the MySQL thread.
*
* This macro updates the value of a boolean variable named 'name' from
* the MySQL thread. It retrieves the value using the 'get_variable_int' function
* from the 'GloMTH' object and assigns it to the variable 'mysql_thread___name'.
* The retrieved integer value is cast to a boolean before assignment.
*
* @param name The name of the boolean variable to be refreshed.
*/
#define REFRESH_VARIABLE_BOOL(name) \
mysql_thread___ ## name = (bool)GloMTH->get_variable_int((char *)STRINGIFY(name))
/**
* @brief Refreshes an integer variable from the MySQL thread.
*
* This macro updates the value of an integer variable named 'name' from
* the MySQL thread. It retrieves the value using the 'get_variable_int' function
* from the 'GloMTH' object and assigns it to the variable 'mysql_thread___name'.
*
* @param name The name of the integer variable to be refreshed.
*/
#define REFRESH_VARIABLE_INT(name) \
mysql_thread___ ## name = GloMTH->get_variable_int((char *)STRINGIFY(name))
/**
* @brief Refreshes a character variable from the MySQL thread.
*
* This macro updates the value of a character variable named 'name' from
* the MySQL thread. It retrieves the value using the 'get_variable_string' function
* from the 'GloMTH' object and assigns it to the variable 'mysql_thread___name'.
* If the variable 'mysql_thread___name' was previously allocated memory,
* it frees that memory before assigning the new value.
*
* @param name The name of the character variable to be refreshed.
*/
#define REFRESH_VARIABLE_CHAR(name) \
do { \
if (mysql_thread___ ## name) free(mysql_thread___ ## name); \
mysql_thread___ ## name = GloMTH->get_variable_string((char *)STRINGIFY(name)); \
} while (0)
extern MySQL_Query_Processor* GloMyQPro;
extern MySQL_Authentication *GloMyAuth;
extern MySQL_Threads_Handler *GloMTH;
extern MySQL_Monitor *GloMyMon;
extern MySQL_Logger *GloMyLogger;
typedef struct mythr_st_vars {
enum MySQL_Thread_status_variable v_idx;
p_th_counter::metric m_idx;
char * name;
uint32_t conv;
} mythr_st_vars_t;
typedef struct mythr_g_st_vars {
enum MySQL_Thread_status_variable v_idx;
p_th_gauge::metric m_idx;
char * name;
uint32_t conv;
} mythr_g_st_vars_t;
// Note: the order here is not important.
mythr_st_vars_t MySQL_Thread_status_variables_counter_array[] {
{ st_var_backend_stmt_prepare, p_th_counter::com_backend_stmt_prepare, (char *)"Com_backend_stmt_prepare" },
{ st_var_backend_stmt_execute, p_th_counter::com_backend_stmt_execute, (char *)"Com_backend_stmt_execute" },
{ st_var_backend_stmt_close, p_th_counter::com_backend_stmt_close, (char *)"Com_backend_stmt_close" },
{ st_var_frontend_stmt_prepare, p_th_counter::com_frontend_stmt_prepare, (char *)"Com_frontend_stmt_prepare" },
{ st_var_frontend_stmt_execute, p_th_counter::com_frontend_stmt_execute, (char *)"Com_frontend_stmt_execute" },
{ st_var_frontend_stmt_close, p_th_counter::com_frontend_stmt_close, (char *)"Com_frontend_stmt_close" },
{ st_var_queries, p_th_counter::questions, (char *)"Questions" },
{ st_var_queries_slow, p_th_counter::slow_queries, (char *)"Slow_queries" },
{ st_var_queries_gtid, p_th_counter::gtid_consistent_queries, (char *)"GTID_consistent_queries" },
{ st_var_gtid_session_collected,p_th_counter::gtid_session_collected, (char *)"GTID_session_collected" },
{ st_var_queries_backends_bytes_recv, p_th_counter::queries_backends_bytes_recv, (char *)"Queries_backends_bytes_recv" },
{ st_var_queries_backends_bytes_sent, p_th_counter::queries_backends_bytes_sent, (char *)"Queries_backends_bytes_sent" },
{ st_var_queries_frontends_bytes_recv, p_th_counter::queries_frontends_bytes_recv, (char *)"Queries_frontends_bytes_recv" },
{ st_var_queries_frontends_bytes_sent, p_th_counter::queries_frontends_bytes_sent, (char *)"Queries_frontends_bytes_sent" },
{ st_var_query_processor_time , p_th_counter::query_processor_time_nsec, (char *)"Query_Processor_time_nsec", 1000*1000*1000 },
{ st_var_backend_query_time , p_th_counter::backend_query_time_nsec, (char *)"Backend_query_time_nsec", 1000*1000*1000 },
{ st_var_ConnPool_get_conn_latency_awareness , p_th_counter::connpool_get_conn_latency_awareness, (char *)"ConnPool_get_conn_latency_awareness" },
{ st_var_ConnPool_get_conn_immediate, p_th_counter::connpool_get_conn_immediate, (char *)"ConnPool_get_conn_immediate" },
{ st_var_ConnPool_get_conn_success, p_th_counter::connpool_get_conn_success, (char *)"ConnPool_get_conn_success" },
{ st_var_ConnPool_get_conn_failure, p_th_counter::connpool_get_conn_failure, (char *)"ConnPool_get_conn_failure" },
{ st_var_killed_connections, p_th_counter::mysql_killed_backend_connections, (char *)"mysql_killed_backend_connections" },
{ st_var_killed_queries, p_th_counter::mysql_killed_backend_queries, (char *)"mysql_killed_backend_queries" },
{ st_var_hostgroup_locked_set_cmds, p_th_counter::hostgroup_locked_set_cmds, (char *)"hostgroup_locked_set_cmds" },
{ st_var_hostgroup_locked_queries, p_th_counter::hostgroup_locked_queries, (char *)"hostgroup_locked_queries" },
{ st_var_unexpected_com_quit, p_th_counter::mysql_unexpected_frontend_com_quit,(char *)"mysql_unexpected_frontend_com_quit" },
{ st_var_unexpected_packet, p_th_counter::mysql_unexpected_frontend_packets,(char *)"mysql_unexpected_frontend_packets" },
{ st_var_queries_with_max_lag_ms__total_wait_time_us , p_th_counter::queries_with_max_lag_ms__total_wait_time_us, (char *)"queries_with_max_lag_ms__total_wait_time_us" },
{ st_var_queries_with_max_lag_ms__delayed , p_th_counter::queries_with_max_lag_ms__delayed, (char *)"queries_with_max_lag_ms__delayed" },
{ st_var_queries_with_max_lag_ms, p_th_counter::queries_with_max_lag_ms, (char *)"queries_with_max_lag_ms" },
{ st_var_backend_lagging_during_query,p_th_counter::backend_lagging_during_query, (char *)"backend_lagging_during_query" },
{ st_var_backend_offline_during_query,p_th_counter::backend_offline_during_query, (char *)"backend_offline_during_query" },
{ st_var_aws_aurora_replicas_skipped_during_query , p_th_counter::aws_aurora_replicas_skipped_during_query, (char *)"get_aws_aurora_replicas_skipped_during_query" },
{ st_var_automatic_detected_sqli, p_th_counter::automatic_detected_sql_injection, (char *)"automatic_detected_sql_injection" },
{ st_var_mysql_whitelisted_sqli_fingerprint,p_th_counter::mysql_whitelisted_sqli_fingerprint, (char *)"mysql_whitelisted_sqli_fingerprint" },
{ st_var_max_connect_timeout_err, p_th_counter::max_connect_timeouts, (char *)"max_connect_timeouts" },
{ st_var_generated_pkt_err, p_th_counter::generated_error_packets, (char *)"generated_error_packets" },
{ st_var_client_host_error_killed_connections, p_th_counter::client_host_error_killed_connections, (char *)"client_host_error_killed_connections" },
};
mythr_g_st_vars_t MySQL_Thread_status_variables_gauge_array[] {
{ st_var_hostgroup_locked, p_th_gauge::client_connections_hostgroup_locked, (char *)"Client_Connections_hostgroup_locked" }
};
extern mysql_variable_st mysql_tracked_variables[];
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#ifdef DEBUG
#define DEB "_DEBUG"
#else
#define DEB ""
#endif /* DEBUG */
#define MYSQL_THREAD_VERSION "0.2.0902" DEB
#define DEFAULT_NUM_THREADS 4
#define DEFAULT_STACK_SIZE 1024*1024
#define SESSIONS_FOR_CONNECTIONS_HANDLER 64
__thread unsigned int __thread_MySQL_Thread_Variables_version;
volatile static unsigned int __global_MySQL_Thread_Variables_version;
MySQL_Listeners_Manager::MySQL_Listeners_Manager() {
ifaces=new PtrArray();
}
MySQL_Listeners_Manager::~MySQL_Listeners_Manager() {
while (ifaces->len) {
iface_info *ifi=(iface_info *)ifaces->remove_index_fast(0);
shutdown(ifi->fd,SHUT_RDWR);
close(ifi->fd);
if (ifi->port==0) {
unlink(ifi->address);
}
delete ifi;
}
delete ifaces;
ifaces=NULL;
}
int MySQL_Listeners_Manager::add(const char *iface, unsigned int num_threads, int **perthrsocks) {
for (unsigned int i=0; i<ifaces->len; i++) {
iface_info *ifi=(iface_info *)ifaces->index(i);
if (strcmp(ifi->iface,iface)==0) {
return -1;
}
}
char *address=NULL; char *port=NULL;
int s = -1;
char *h = NULL;
bool is_ipv6 = false;
if (*(char *)iface == '[') {
is_ipv6 = true;
char *p = strchr((char *)iface, ']');
if (p == NULL) {
proxy_error("Invalid IPv6 address: %s\n", iface);
return -1;
}
h = (char *)++iface; // remove first '['
*p = '\0';
iface = p++; // remove last ']'
address = h;
port = ++p; // remove ':'
} else {
c_split_2(iface, ":" , &address, &port);
}
#ifdef SO_REUSEPORT
if (GloVars.global.reuseport==false) {
s = ( atoi(port) ? listen_on_port(address, atoi(port), PROXYSQL_LISTEN_LEN) : listen_on_unix(address, PROXYSQL_LISTEN_LEN));
} else {
if (atoi(port)==0) {
s = listen_on_unix(address, PROXYSQL_LISTEN_LEN);
} else {
// for TCP we will use SO_REUSEPORT
int *l_perthrsocks=(int *)malloc(sizeof(int)*num_threads);
unsigned int i;
for (i=0;i<num_threads;i++) {
s=listen_on_port(address, atoi(port), PROXYSQL_LISTEN_LEN, true);
ioctl_FIONBIO(s,1);
iface_info *ifi=new iface_info((char *)iface, address, atoi(port), s);
ifaces->add(ifi);
l_perthrsocks[i]=s;
}
*perthrsocks=l_perthrsocks;
s=0;
}
}
#else
s = ( atoi(port) ? listen_on_port(address, atoi(port), PROXYSQL_LISTEN_LEN) : listen_on_unix(address, PROXYSQL_LISTEN_LEN));
#endif /* SO_REUSEPORT */
if (s==-1) {
if (is_ipv6 == false) {
free(address);
free(port);
}
return s;
}
if (s>0) {
ioctl_FIONBIO(s,1);
iface_info *ifi=new iface_info((char *)iface, address, atoi(port), s);
ifaces->add(ifi);
}
if (is_ipv6 == false) {
free(address);
free(port);
}
return s;
}
int MySQL_Listeners_Manager::find_idx(const char *iface) {
for (unsigned int i=0; i<ifaces->len; i++) {
iface_info *ifi=(iface_info *)ifaces->index(i);
if (strcmp(ifi->iface,iface)==0) {
return i;
}
}
return -1;
}
iface_info * MySQL_Listeners_Manager::find_iface_from_fd(int fd) {
for (unsigned int i=0; i<ifaces->len; i++) {
iface_info *ifi=(iface_info *)ifaces->index(i);
if (ifi->fd==fd) {
return ifi;
}
}
return NULL;
}
int MySQL_Listeners_Manager::find_idx(const char *address, int port) {
for (unsigned int i=0; i<ifaces->len; i++) {
iface_info *ifi=(iface_info *)ifaces->index(i);
if (strcmp(ifi->address,address)==0 && ifi->port==port) {
return i;
}
}
return -1;
}
int MySQL_Listeners_Manager::get_fd(unsigned int idx) {
iface_info *ifi=(iface_info *)ifaces->index(idx);
return ifi->fd;
}
void MySQL_Listeners_Manager::del(unsigned int idx) {
iface_info *ifi=(iface_info *)ifaces->remove_index_fast(idx);
if (ifi->port==0) {
unlink(ifi->address);
}
delete ifi;
}
static char * mysql_thread_variables_names[]= {
(char *)"shun_on_failures",
(char *)"shun_recovery_time_sec",
(char *)"unshun_algorithm",
(char *)"query_retries_on_failure",
(char *)"client_host_cache_size",
(char *)"client_host_error_counts",
(char *)"connect_retries_on_failure",
(char *)"connect_retries_delay",
(char *)"connection_delay_multiplex_ms",
(char *)"connection_max_age_ms",
(char *)"connect_timeout_client",
(char *)"connect_timeout_server",
(char *)"connect_timeout_server_max",
(char *)"enable_client_deprecate_eof",
(char *)"enable_server_deprecate_eof",
(char *)"enable_load_data_local_infile",
(char *)"eventslog_filename",
(char *)"eventslog_filesize",
(char *)"eventslog_buffer_history_size",
(char *)"eventslog_table_memory_size",
(char *)"eventslog_buffer_max_query_length",
(char *)"eventslog_default_log",
(char *)"eventslog_format",
(char *)"auditlog_filename",
(char *)"auditlog_filesize",
//(char *)"default_charset", // removed in 2.0.13 . Obsoleted previously using MySQL_Variables instead
(char *)"handle_unknown_charset",
(char *)"free_connections_pct",
(char *)"connection_warming",
#ifdef IDLE_THREADS
(char *)"session_idle_ms",
#endif // IDLE_THREADS
(char *)"have_ssl",
(char *)"have_compress",
(char *)"interfaces",
(char *)"log_mysql_warnings_enabled",
(char *)"monitor_enabled",
(char *)"monitor_history",
(char *)"monitor_connect_interval",
(char *)"monitor_connect_timeout",
(char *)"monitor_ping_interval",
(char *)"monitor_ping_max_failures",
(char *)"monitor_ping_timeout",
(char *)"monitor_aws_rds_topology_discovery_interval",
(char *)"monitor_read_only_interval",
(char *)"monitor_read_only_timeout",
(char *)"monitor_read_only_max_timeout_count",
(char *)"monitor_replication_lag_group_by_host",
(char *)"monitor_replication_lag_interval",
(char *)"monitor_replication_lag_timeout",
(char *)"monitor_replication_lag_count",
(char *)"monitor_groupreplication_healthcheck_interval",
(char *)"monitor_groupreplication_healthcheck_timeout",
(char *)"monitor_groupreplication_healthcheck_max_timeout_count",
(char *)"monitor_groupreplication_max_transactions_behind_count",
(char *)"monitor_groupreplication_max_transactions_behind_for_read_only",
(char *)"monitor_galera_healthcheck_interval",
(char *)"monitor_galera_healthcheck_timeout",
(char *)"monitor_galera_healthcheck_max_timeout_count",
(char *)"monitor_username",
(char *)"monitor_password",
(char *)"monitor_replication_lag_use_percona_heartbeat",
(char *)"monitor_query_interval",
(char *)"monitor_query_timeout",
(char *)"monitor_slave_lag_when_null",
(char *)"monitor_threads_min",
(char *)"monitor_threads_max",
(char *)"monitor_threads_queue_maxsize",
(char *)"monitor_local_dns_cache_ttl",
(char *)"monitor_local_dns_cache_refresh_interval",
(char *)"monitor_local_dns_resolver_queue_maxsize",
(char *)"monitor_wait_timeout",
(char *)"monitor_writer_is_also_reader",
(char *)"max_allowed_packet",
(char *)"tcp_keepalive_time",
(char *)"use_tcp_keepalive",
(char *)"automatic_detect_sqli",
(char *)"firewall_whitelist_enabled",
(char *)"firewall_whitelist_errormsg",
(char *)"throttle_connections_per_sec_to_hostgroup",
(char *)"max_transaction_idle_time",
(char *)"max_transaction_time",
(char *)"multiplexing",
(char *)"log_unhealthy_connections",
(char *)"enforce_autocommit_on_reads",
(char *)"autocommit_false_not_reusable",
(char *)"autocommit_false_is_transaction",
(char *)"verbose_query_error",
(char *)"hostgroup_manager_verbose",
(char *)"binlog_reader_connect_retry_msec",
(char *)"threshold_query_length",
(char *)"threshold_resultset_size",
(char *)"query_digests_max_digest_length",
(char *)"query_digests_max_query_length",
(char *)"query_digests_grouping_limit",
(char *)"query_digests_groups_grouping_limit",
(char *)"query_rules_fast_routing_algorithm",
(char *)"wait_timeout",
(char *)"throttle_max_bytes_per_second_to_client",
(char *)"throttle_ratio_server_to_client",
(char *)"max_connections",
(char *)"max_stmts_per_connection",
(char *)"max_stmts_cache",
(char *)"mirror_max_concurrency",
(char *)"mirror_max_queue_length",
(char *)"default_max_latency_ms",
(char *)"default_query_delay",
(char *)"default_query_timeout",
(char *)"query_processor_iterations",
(char *)"query_processor_regex",
(char *)"set_query_lock_on_hostgroup",
(char *)"set_parser_algorithm",
(char *)"reset_connection_algorithm",
(char *)"auto_increment_delay_multiplex",
(char *)"auto_increment_delay_multiplex_timeout_ms",
(char *)"long_query_time",
(char *)"query_cache_size_MB",
(char *)"query_cache_soft_ttl_pct",
(char *)"query_cache_handle_warnings",
(char *)"ping_interval_server_msec",
(char *)"ping_timeout_server",
(char *)"default_schema",
(char *)"poll_timeout",
(char *)"poll_timeout_on_failure",
(char *)"server_capabilities",
(char *)"server_version",
(char *)"keep_multiplexing_variables",
(char *)"default_authentication_plugin",
(char *)"kill_backend_connection_when_disconnect",
(char *)"client_session_track_gtid",
(char *)"sessions_sort",
#ifdef IDLE_THREADS
(char *)"session_idle_show_processlist",
#endif // IDLE_THREADS
(char *)"show_processlist_extended",
(char *)"commands_stats",
(char *)"query_digests",
(char *)"query_digests_lowercase",
(char *)"query_digests_replace_null",
(char *)"query_digests_no_digits",
(char *)"query_digests_normalize_digest_text",
(char *)"query_digests_track_hostname",
(char *)"query_digests_keep_comment",
(char *)"parse_failure_logs_digest",
(char *)"servers_stats",
(char *)"default_reconnect",
#ifdef DEBUG
(char *)"session_debug",
#endif /* DEBUG */
(char *)"ssl_p2s_ca",
(char *)"ssl_p2s_capath",
(char *)"ssl_p2s_cert",
(char *)"ssl_p2s_key",
(char *)"ssl_p2s_cipher",
(char *)"ssl_p2s_crl",
(char *)"ssl_p2s_crlpath",
(char *)"stacksize",
(char *)"threads",
(char *)"init_connect",
(char *)"ldap_user_variable",
(char *)"add_ldap_user_comment",
(char *)"default_session_track_gtids",
(char *)"connpoll_reset_queue_length",
(char *)"min_num_servers_lantency_awareness",
(char *)"aurora_max_lag_ms_only_read_from_replicas",
(char *)"stats_time_backend_query",
(char *)"stats_time_query_processor",
(char *)"query_cache_stores_empty_result",
(char *)"data_packets_history_size",
(char *)"handle_warnings",
(char *)"evaluate_replication_lag_on_servers_load",
(char *)"proxy_protocol_networks",
(char *)"protocol_compression_level",
NULL
};
using metric_name = std::string;
using metric_help = std::string;
using metric_tags = std::map<std::string, std::string>;
using th_counter_tuple =
std::tuple<
p_th_counter::metric,
metric_name,
metric_help,
metric_tags
>;
using th_gauge_tuple =
std::tuple<
p_th_gauge::metric,
metric_name,
metric_help,
metric_tags
>;
using th_counter_vector = std::vector<th_counter_tuple>;
using th_gauge_vector = std::vector<th_gauge_tuple>;
/**
* @brief Metrics map holding the metrics for the MySQL_Thread module.
*
* @note Many metrics in this map, share a common "id name", because
* they differ only by label, because of this, HELP is shared between
* them. For better visual identification of this groups they are
* separated using a line separator comment.
*/
const std::tuple<th_counter_vector, th_gauge_vector>
th_metrics_map = std::make_tuple(
th_counter_vector {
// ====================================================================
std::make_tuple (
p_th_counter::queries_backends_bytes_sent,
"proxysql_queries_backends_bytes_total",
"Total number of bytes (sent|received) in backend connections.",
metric_tags {
{ "traffic_flow", "sent" }
}
),
std::make_tuple (
p_th_counter::queries_backends_bytes_recv,
"proxysql_queries_backends_bytes_total",
"Total number of bytes (sent|received) in backend connections.",
metric_tags {
{ "traffic_flow", "received" }
}
),
// ====================================================================
// ====================================================================
std::make_tuple (
p_th_counter::queries_frontends_bytes_sent,
"proxysql_queries_frontends_bytes_total",
"Total number of bytes (sent|received) in frontend connections.",
metric_tags {
{ "traffic_flow", "sent" }
}
),
std::make_tuple (
p_th_counter::queries_frontends_bytes_recv,
"proxysql_queries_frontends_bytes_total",
"Total number of bytes (sent|received) in frontend connections.",
metric_tags {
{ "traffic_flow", "received" }
}
),
// ====================================================================
std::make_tuple (
p_th_counter::query_processor_time_nsec,
"proxysql_query_processor_time_seconds_total",
"The time spent inside the \"Query Processor\" to determine what action needs to be taken with the query (internal module).",
metric_tags {}
),
std::make_tuple (
p_th_counter::backend_query_time_nsec,
"proxysql_backend_query_time_seconds_total",
"Time spent making network calls to communicate with the backends.",
metric_tags {}
),
// ====================================================================
std::make_tuple (
p_th_counter::com_backend_stmt_prepare,
"proxysql_com_backend_stmt_total",
"Represents the number of statements (PREPARE|EXECUTE|CLOSE) executed by ProxySQL against the backends.",
metric_tags {
{ "op", "prepare" }
}
),
std::make_tuple (
p_th_counter::com_backend_stmt_execute,
"proxysql_com_backend_stmt_total",
"Represents the number of statements (PREPARE|EXECUTE|CLOSE) executed by ProxySQL against the backends.",
metric_tags {
{ "op", "execute" }
}
),
std::make_tuple (
p_th_counter::com_backend_stmt_close,
"proxysql_com_backend_stmt_total",
"Represents the number of statements (PREPARE|EXECUTE|CLOSE) executed by ProxySQL against the backends.",
metric_tags {
{ "op", "close" }
}
),
// ====================================================================
// ====================================================================
std::make_tuple (
p_th_counter::com_frontend_stmt_prepare,
"proxysql_com_frontend_stmt_total",
"Represents the number of statements (PREPARE|EXECUTE|CLOSE) executed by clients.",
metric_tags {
{ "op", "prepare" }
}
),
std::make_tuple (
p_th_counter::com_frontend_stmt_execute,
"proxysql_com_frontend_stmt_total",
"Represents the number of statements (PREPARE|EXECUTE|CLOSE) executed by clients.",
metric_tags {
{ "op", "execute" }
}
),
std::make_tuple (
p_th_counter::com_frontend_stmt_close,
"proxysql_com_frontend_stmt_total",
"Represents the number of statements (PREPARE|EXECUTE|CLOSE) executed by clients.",
metric_tags {
{ "op", "close" }
}
),
// ====================================================================
std::make_tuple (
p_th_counter::questions,
"proxysql_questions_total",
"The total number of client requests / statements executed.",
metric_tags {}
),
std::make_tuple (
p_th_counter::slow_queries,
"proxysql_slow_queries_total",
"The total number of queries with an execution time greater than \"mysql-long_query_time\" milliseconds.",
metric_tags {}
),
std::make_tuple (
p_th_counter::gtid_consistent_queries,
"proxysql_gtid_consistent_queries_total",
"Total queries with GTID consistent read.",
metric_tags {}
),
std::make_tuple (
p_th_counter::gtid_session_collected,
"proxysql_gtid_session_collected_total",
"Total queries with GTID session state.",
metric_tags {}
),
// ====================================================================
std::make_tuple (
p_th_counter::connpool_get_conn_latency_awareness,
"proxysql_connpool_get_conn_success_latency_awareness_total",
"The connection was picked using the latency awareness algorithm.",
metric_tags {}
),
std::make_tuple (
p_th_counter::connpool_get_conn_immediate,
"proxysql_connpool_get_conn_success_immediate_total",
"The connection is provided from per-thread cache.",
metric_tags {}
),
std::make_tuple (
p_th_counter::connpool_get_conn_success,
"proxysql_connpool_get_conn_success_total",
"The session is able to get a connection, either from per-thread cache or connection pool.",
metric_tags {}
),
std::make_tuple (
p_th_counter::connpool_get_conn_failure,
"proxysql_connpool_get_conn_failure_total",
"The connection pool cannot provide any connection.",
metric_tags {}
),
// ====================================================================
std::make_tuple (
p_th_counter::generated_error_packets,
"proxysql_generated_error_packets_total",
"Total generated error packets.",
metric_tags {}
),
std::make_tuple (
p_th_counter::max_connect_timeouts,
"proxysql_max_connect_timeouts_total",
"Maximum connection timeout reached when trying to connect to backend sever.",
metric_tags {}
),
std::make_tuple (
p_th_counter::backend_lagging_during_query,
"proxysql_backend_lagging_during_query_total",
"Query failed because server was shunned due to lag.",
metric_tags {}
),
std::make_tuple (
p_th_counter::backend_offline_during_query,
"proxysql_backend_offline_during_query_total",
"Query failed because server was offline.",
metric_tags {}
),
std::make_tuple (
p_th_counter::queries_with_max_lag_ms,
"proxysql_queries_with_max_lag_total",
"Received queries that have a 'max_lag' attribute.",
metric_tags {}
),
std::make_tuple (
p_th_counter::queries_with_max_lag_ms__delayed,
"proxysql_queries_with_max_lag__delayed_total",
"Query delayed because no connection was selected due to 'max_lag' annotation.",
metric_tags {}
),
std::make_tuple (
p_th_counter::queries_with_max_lag_ms__total_wait_time_us,
"proxysql_queries_with_max_lag__total_wait_time_total",
"Total waited time due to connection selection because of 'max_lag' annotation.",
metric_tags {}
),
std::make_tuple (
p_th_counter::mysql_unexpected_frontend_com_quit,
"proxysql_mysql_unexpected_frontend_com_quit_total",
"Unexpected 'COM_QUIT' received from the client.",
metric_tags {}
),
std::make_tuple (
p_th_counter::hostgroup_locked_set_cmds,
"proxysql_hostgroup_locked_set_cmds_total",
"Total number of connections that have been locked in a hostgroup.",
metric_tags {}
),
std::make_tuple (
p_th_counter::hostgroup_locked_queries,
"proxysql_hostgroup_locked_queries_total",
"Query blocked because connection is locked into some hostgroup but is trying to reach other.",
metric_tags {}
),
std::make_tuple (
p_th_counter::mysql_unexpected_frontend_packets,
"proxysql_mysql_unexpected_frontend_packets_total",
"Unexpected packet received from client.",
metric_tags {}
),
std::make_tuple (
p_th_counter::aws_aurora_replicas_skipped_during_query,
"proxysql_aws_aurora_replicas_skipped_during_query_total",
"Replicas skipped due to current lag being higher than 'max_lag' annotation.",
metric_tags {}
),
std::make_tuple (
p_th_counter::automatic_detected_sql_injection,
"proxysql_automatic_detected_sql_injection_total",
"Blocked a detected 'sql injection' attempt.",
metric_tags {}
),
std::make_tuple (
p_th_counter::mysql_whitelisted_sqli_fingerprint,
"proxysql_mysql_whitelisted_sqli_fingerprint_total",
"Detected a whitelisted 'sql injection' fingerprint.",
metric_tags {}
),
std::make_tuple (
p_th_counter::mysql_killed_backend_connections,
"proxysql_mysql_killed_backend_connections_total",
"Number of backend connection killed.",
metric_tags {}
),
std::make_tuple (
p_th_counter::mysql_killed_backend_queries,
"proxysql_mysql_killed_backend_queries_total",
"Killed backend queries.",
metric_tags {}
),
std::make_tuple (
p_th_counter::client_host_error_killed_connections,
"proxysql_client_host_error_killed_connections",
"Killed client connections because address exceeded 'client_host_error_counts'.",
metric_tags {}
)
},
th_gauge_vector {
std::make_tuple (
p_th_gauge::active_transactions,
"proxysql_active_transactions",
"Provides a count of how many client connection are currently processing a transaction.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::client_connections_non_idle,
"proxysql_client_connections_non_idle",
"Number of client connections that are currently handled by the main worker threads.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::client_connections_hostgroup_locked,
"proxysql_client_connections_hostgroup_locked",
"Number of client connection locked to a specific hostgroup.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_backend_buffers_bytes,
"proxysql_mysql_backend_buffers_bytes",
"Buffers related to backend connections if \"fast_forward\" is used (0 means fast_forward is not used).",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_frontend_buffers_bytes,
"proxysql_mysql_frontend_buffers_bytes",
"Buffers related to frontend connections (read/write buffers and other queues).",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_session_internal_bytes,
"proxysql_mysql_session_internal_bytes",
"Other memory used by ProxySQL to handle MySQL Sessions.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mirror_concurrency,
"proxysql_mirror_concurrency",
"Mirror current concurrency",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mirror_queue_lengths,
"proxysql_mirror_queue_lengths",
"Mirror queue length",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_thread_workers,
"proxysql_mysql_thread_workers",
"Number of MySQL Thread workers i.e. 'mysql-threads'",
metric_tags {}
),
// global_variables
std::make_tuple (
p_th_gauge::mysql_wait_timeout,
"proxysql_mysql_wait_timeout",
"If a proxy session has been idle for more than this threshold, the proxy will kill the session.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_max_connections,
"proxysql_mysql_max_connections",
"The maximum number of client connections that the proxy can handle.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_enabled,
"proxysql_mysql_monitor_enabled",
"Enables or disables MySQL Monitor.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_ping_interval,
"proxysql_mysql_monitor_ping_interval",
"How frequently a ping check is performed, in seconds.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_ping_timeout,
"proxysql_mysql_monitor_ping_timeout_seconds",
"Ping timeout in seconds.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_ping_max_failures,
"proxysql_mysql_monitor_ping_max_failures",
"Reached maximum ping attempts from monitor.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_aws_rds_topology_discovery_interval,
"proxysql_mysql_monitor_aws_rds_topology_discovery_interval",
"How frequently a topology discovery is performed, e.g. a value of 500 means one topology discovery every 500 read-only checks ",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_read_only_interval,
"proxysql_mysql_monitor_read_only_interval_seconds",
"How frequently a read only check is performed, in seconds.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_read_only_timeout,
"proxysql_mysql_monitor_read_only_timeout_seconds",
"Read only check timeout in seconds.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_writer_is_also_reader,
"proxysql_mysql_monitor_writer_is_also_reader",
"Encodes different behaviors for nodes depending on their 'READ_ONLY' flag value.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_replication_lag_group_by_host,
"proxysql_monitor_replication_lag_group_by_host",
"Encodes different replication lag check if the same server is in multiple hostgroups.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_replication_lag_interval,
"proxysql_mysql_monitor_replication_lag_interval_seconds",
"How frequently a replication lag check is performed, in seconds.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_replication_lag_timeout,
"proxysql_mysql_monitor_replication_lag_timeout_seconds",
"Replication lag check timeout in seconds.",
metric_tags {}
),
std::make_tuple (
p_th_gauge::mysql_monitor_history,
"proxysql_mysql_monitor_history_timeout_seconds",
"The duration for which the events for the checks made by the Monitor module are kept, in seconds.",
metric_tags {}
)
}
);
MySQL_Threads_Handler::MySQL_Threads_Handler() {
#ifdef DEBUG
if (glovars.has_debug==false) {
#else
if (glovars.has_debug==true) {
#endif /* DEBUG */
// LCOV_EXCL_START
perror("Incompatible debugging version");
exit(EXIT_FAILURE);
// LCOV_EXCL_STOP
}
num_threads=0;
mysql_threads=NULL;
#ifdef IDLE_THREADS
mysql_threads_idles=NULL;
#endif // IDLE_THREADS
stacksize=0;
shutdown_=0;
bootstrapping_listeners = true;
pthread_rwlock_init(&rwlock,NULL);
pthread_attr_init(&attr);
// Zero initialize all variables
memset(&variables, 0, sizeof(variables));
variables.shun_on_failures=5;
variables.shun_recovery_time_sec=10;
variables.unshun_algorithm=0;
variables.query_retries_on_failure=1;
variables.client_host_cache_size=0;
variables.client_host_error_counts=0;
variables.handle_warnings=1;
variables.evaluate_replication_lag_on_servers_load=1;
variables.connect_retries_on_failure=10;
variables.connection_delay_multiplex_ms=0;
variables.connection_max_age_ms=0;
variables.connect_timeout_client=10000;
variables.connect_timeout_server=1000;
variables.connect_timeout_server_max=10000;
variables.free_connections_pct=10;
variables.connect_retries_delay=1;
variables.monitor_enabled=true;
variables.monitor_history=7200000; // changed in 2.6.0 : was 600000
variables.monitor_connect_interval=120000;
variables.monitor_connect_timeout=600;
variables.monitor_ping_interval=8000;
variables.monitor_ping_max_failures=3;
variables.monitor_ping_timeout=1000;
variables.monitor_aws_rds_topology_discovery_interval=0;
variables.monitor_read_only_interval=1000;
variables.monitor_read_only_timeout=800;
variables.monitor_read_only_max_timeout_count=3;