MXS-1703 Miscellaneous cleanup
1. Move some remaining class data private. 2. Linebreak long lines. 3. Move current master autoselection inside class method. 4. Remove single-use constant #defines. 5. Monitor status is only written inside loop.
This commit is contained in:
@ -82,7 +82,7 @@ MXS_MONITORED_SERVER* MariaDBMonitor::build_mysql51_replication_tree()
|
||||
/* Set the Slave Role */
|
||||
if (ismaster)
|
||||
{
|
||||
master = database;
|
||||
m_master = database;
|
||||
|
||||
MXS_DEBUG("Master server found at [%s]:%d with %d slaves",
|
||||
database->server->name,
|
||||
@ -123,7 +123,7 @@ MXS_MONITORED_SERVER* MariaDBMonitor::build_mysql51_replication_tree()
|
||||
}
|
||||
if (SERVER_IS_SLAVE(database->server) &&
|
||||
(database->server->master_id <= 0 ||
|
||||
database->server->master_id != master->server->node_id))
|
||||
database->server->master_id != m_master->server->node_id))
|
||||
{
|
||||
|
||||
monitor_set_pending_status(database, SERVER_SLAVE);
|
||||
@ -200,7 +200,7 @@ MXS_MONITORED_SERVER* MariaDBMonitor::get_replication_tree(int num_servers)
|
||||
if (current->depth > -1 && current->depth < root_level)
|
||||
{
|
||||
root_level = current->depth;
|
||||
master = ptr;
|
||||
m_master = ptr;
|
||||
}
|
||||
backend = getServerByNodeId(m_monitor_base->monitored_servers, node_id);
|
||||
|
||||
@ -231,12 +231,12 @@ MXS_MONITORED_SERVER* MariaDBMonitor::get_replication_tree(int num_servers)
|
||||
current->node_id);
|
||||
master_cand->server->depth = current->depth - 1;
|
||||
|
||||
if (master && master_cand->server->depth < master->server->depth)
|
||||
if (m_master && master_cand->server->depth < m_master->server->depth)
|
||||
{
|
||||
/** A master with a lower depth was found, remove
|
||||
the master status from the previous master. */
|
||||
monitor_clear_pending_status(master, SERVER_MASTER);
|
||||
master = master_cand;
|
||||
monitor_clear_pending_status(m_master, SERVER_MASTER);
|
||||
m_master = master_cand;
|
||||
}
|
||||
|
||||
MySqlServerInfo* info = get_server_info(master_cand);
|
||||
@ -267,16 +267,16 @@ MXS_MONITORED_SERVER* MariaDBMonitor::get_replication_tree(int num_servers)
|
||||
* Return the root master
|
||||
*/
|
||||
|
||||
if (master != NULL)
|
||||
if (m_master != NULL)
|
||||
{
|
||||
/* If the root master is in MAINT, return NULL */
|
||||
if (SERVER_IN_MAINT(master->server))
|
||||
if (SERVER_IN_MAINT(m_master->server))
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
else
|
||||
{
|
||||
return master;
|
||||
return m_master;
|
||||
}
|
||||
}
|
||||
else
|
||||
|
@ -18,8 +18,25 @@
|
||||
#include <maxscale/hk_heartbeat.h>
|
||||
#include <maxscale/mysql_utils.h>
|
||||
|
||||
bool MariaDBMonitor::manual_switchover(MXS_MONITORED_SERVER* new_master, MXS_MONITORED_SERVER* current_master, json_t** error_out)
|
||||
bool MariaDBMonitor::manual_switchover(MXS_MONITORED_SERVER* new_master, MXS_MONITORED_SERVER* current_master,
|
||||
json_t** error_out)
|
||||
{
|
||||
// Autoselect current master if not given as parameter.
|
||||
MXS_MONITORED_SERVER* selected_current_master;
|
||||
if (current_master == NULL)
|
||||
{
|
||||
if (m_master)
|
||||
{
|
||||
selected_current_master = m_master;
|
||||
}
|
||||
else
|
||||
{
|
||||
const char NO_MASTER[] = "Monitor '%s' has no master server.";
|
||||
PRINT_MXS_JSON_ERROR(error_out, NO_MASTER, m_monitor_base->name);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
bool stopped = stop();
|
||||
if (stopped)
|
||||
{
|
||||
@ -30,8 +47,7 @@ bool MariaDBMonitor::manual_switchover(MXS_MONITORED_SERVER* new_master, MXS_MON
|
||||
MXS_NOTICE("Monitor %s already stopped, switchover can proceed.", m_monitor_base->name);
|
||||
}
|
||||
|
||||
bool rval = false;
|
||||
bool current_ok = switchover_check_current(current_master, error_out);
|
||||
bool current_ok = switchover_check_current(selected_current_master, error_out);
|
||||
bool new_ok = switchover_check_new(new_master, error_out);
|
||||
// Check that all slaves are using gtid-replication
|
||||
bool gtid_ok = true;
|
||||
@ -46,11 +62,12 @@ bool MariaDBMonitor::manual_switchover(MXS_MONITORED_SERVER* new_master, MXS_MON
|
||||
}
|
||||
}
|
||||
|
||||
bool rval = false;
|
||||
if (current_ok && new_ok && gtid_ok)
|
||||
{
|
||||
bool switched = do_switchover(current_master, new_master, error_out);
|
||||
bool switched = do_switchover(selected_current_master, new_master, error_out);
|
||||
|
||||
const char* curr_master_name = current_master->server->unique_name;
|
||||
const char* curr_master_name = selected_current_master->server->unique_name;
|
||||
const char* new_master_name = new_master->server->unique_name;
|
||||
|
||||
if (switched)
|
||||
@ -132,13 +149,13 @@ bool MariaDBMonitor::manual_rejoin(SERVER* rejoin_server, json_t** output)
|
||||
MXS_MONITORED_SERVER* mon_server = mon_get_monitored_server(m_monitor_base, rejoin_server);
|
||||
if (mon_server)
|
||||
{
|
||||
const char* master_name = master->server->unique_name;
|
||||
MySqlServerInfo* master_info = get_server_info(master);
|
||||
const char* master_name = m_master->server->unique_name;
|
||||
MySqlServerInfo* master_info = get_server_info(m_master);
|
||||
MySqlServerInfo* server_info = get_server_info(mon_server);
|
||||
|
||||
if (server_is_rejoin_suspect(mon_server, master_info, output))
|
||||
{
|
||||
if (update_gtids(master, master_info))
|
||||
if (update_gtids(m_master, master_info))
|
||||
{
|
||||
if (can_replicate_from(mon_server, server_info, master_info))
|
||||
{
|
||||
@ -327,7 +344,7 @@ bool MariaDBMonitor::redirect_one_slave(MXS_MONITORED_SERVER* slave, const char*
|
||||
*/
|
||||
uint32_t MariaDBMonitor::do_rejoin(const ServerVector& joinable_servers)
|
||||
{
|
||||
SERVER* master_server = master->server;
|
||||
SERVER* master_server = m_master->server;
|
||||
uint32_t servers_joined = 0;
|
||||
if (!joinable_servers.empty())
|
||||
{
|
||||
@ -370,7 +387,7 @@ uint32_t MariaDBMonitor::do_rejoin(const ServerVector& joinable_servers)
|
||||
*/
|
||||
bool MariaDBMonitor::cluster_can_be_joined()
|
||||
{
|
||||
return (master != NULL && SERVER_IS_MASTER(master->server) && m_master_gtid_domain >= 0);
|
||||
return (m_master != NULL && SERVER_IS_MASTER(m_master->server) && m_master_gtid_domain >= 0);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -385,7 +402,7 @@ bool MariaDBMonitor::cluster_can_be_joined()
|
||||
bool MariaDBMonitor::get_joinable_servers(ServerVector* output)
|
||||
{
|
||||
ss_dassert(output);
|
||||
MySqlServerInfo *master_info = get_server_info(master);
|
||||
MySqlServerInfo *master_info = get_server_info(m_master);
|
||||
|
||||
// Whether a join operation should be attempted or not depends on several criteria. Start with the ones
|
||||
// easiest to test. Go though all slaves and construct a preliminary list.
|
||||
@ -404,7 +421,7 @@ bool MariaDBMonitor::get_joinable_servers(ServerVector* output)
|
||||
bool comm_ok = true;
|
||||
if (!suspects.empty())
|
||||
{
|
||||
if (update_gtids(master, master_info))
|
||||
if (update_gtids(m_master, master_info))
|
||||
{
|
||||
for (size_t i = 0; i < suspects.size(); i++)
|
||||
{
|
||||
@ -482,8 +499,8 @@ bool MariaDBMonitor::server_is_rejoin_suspect(MXS_MONITORED_SERVER* rejoin_serve
|
||||
}
|
||||
// or is disconnected but master host or port is wrong.
|
||||
else if (!slave_status->slave_io_running && slave_status->slave_sql_running &&
|
||||
(slave_status->master_host != master->server->name ||
|
||||
slave_status->master_port != master->server->port))
|
||||
(slave_status->master_host != m_master->server->name ||
|
||||
slave_status->master_port != m_master->server->port))
|
||||
{
|
||||
is_suspect = true;
|
||||
}
|
||||
@ -508,7 +525,7 @@ bool MariaDBMonitor::server_is_rejoin_suspect(MXS_MONITORED_SERVER* rejoin_serve
|
||||
bool MariaDBMonitor::do_switchover(MXS_MONITORED_SERVER* current_master, MXS_MONITORED_SERVER* new_master,
|
||||
json_t** err_out)
|
||||
{
|
||||
MXS_MONITORED_SERVER* demotion_target = current_master ? current_master : master;
|
||||
MXS_MONITORED_SERVER* demotion_target = current_master ? current_master : m_master;
|
||||
if (demotion_target == NULL)
|
||||
{
|
||||
PRINT_MXS_JSON_ERROR(err_out, "Cluster does not have a running master. Run failover instead.");
|
||||
@ -1166,7 +1183,7 @@ MXS_MONITORED_SERVER* MariaDBMonitor::select_new_master(ServerVector* slaves_out
|
||||
// Do not worry about the exclusion list yet, querying the excluded servers is ok.
|
||||
MySqlServerInfo* cand_info = update_slave_info(cand);
|
||||
// If master is replicating from external master, it is updated but not added to array.
|
||||
if (cand_info && cand != master)
|
||||
if (cand_info && cand != m_master)
|
||||
{
|
||||
slaves_out->push_back(cand);
|
||||
// Check that server is not in the exclusion list while still being a valid choice.
|
||||
@ -1259,7 +1276,8 @@ bool MariaDBMonitor::server_is_excluded(const MXS_MONITORED_SERVER* server)
|
||||
* @param candidate_info Server info of new candidate
|
||||
* @return True if candidate is better
|
||||
*/
|
||||
bool MariaDBMonitor::is_candidate_better(const MySqlServerInfo* current_best_info, const MySqlServerInfo* candidate_info)
|
||||
bool MariaDBMonitor::is_candidate_better(const MySqlServerInfo* current_best_info,
|
||||
const MySqlServerInfo* candidate_info)
|
||||
{
|
||||
uint64_t cand_io = candidate_info->slave_status.gtid_io_pos.sequence;
|
||||
uint64_t cand_processed = candidate_info->gtid_current_pos.sequence;
|
||||
@ -1300,6 +1318,7 @@ bool MariaDBMonitor::is_candidate_better(const MySqlServerInfo* current_best_inf
|
||||
bool MariaDBMonitor::switchover_check_current(const MXS_MONITORED_SERVER* suggested_curr_master,
|
||||
json_t** error_out) const
|
||||
{
|
||||
ss_dassert(suggested_curr_master);
|
||||
bool server_is_master = false;
|
||||
MXS_MONITORED_SERVER* extra_master = NULL; // A master server which is not the suggested one
|
||||
for (MXS_MONITORED_SERVER* mon_serv = m_monitor_base->monitored_servers;
|
||||
@ -1503,7 +1522,7 @@ bool MariaDBMonitor::mon_process_failover(bool* cluster_modified_out)
|
||||
{
|
||||
ss_dassert(*cluster_modified_out == false);
|
||||
if (config_get_global_options()->passive ||
|
||||
(master && SERVER_IS_MASTER(master->server)))
|
||||
(m_master && SERVER_IS_MASTER(m_master->server)))
|
||||
{
|
||||
return true;
|
||||
}
|
||||
@ -1645,9 +1664,9 @@ bool MariaDBMonitor::failover_not_possible()
|
||||
*/
|
||||
bool MariaDBMonitor::slave_receiving_events()
|
||||
{
|
||||
ss_dassert(master);
|
||||
ss_dassert(m_master);
|
||||
bool received_event = false;
|
||||
int64_t master_id = master->server->node_id;
|
||||
int64_t master_id = m_master->server->node_id;
|
||||
for (MXS_MONITORED_SERVER* server = m_monitor_base->monitored_servers; server; server = server->next)
|
||||
{
|
||||
MySqlServerInfo* info = get_server_info(server);
|
||||
|
@ -39,30 +39,20 @@ void check_maxscale_schema_replication(MXS_MONITOR *monitor);
|
||||
|
||||
static const char* hb_table_name = "maxscale_schema.replication_heartbeat";
|
||||
|
||||
// Config parameter names
|
||||
const char * const CN_AUTO_FAILOVER = "auto_failover";
|
||||
static const char CN_FAILOVER_TIMEOUT[] = "failover_timeout";
|
||||
static const char CN_SWITCHOVER_TIMEOUT[] = "switchover_timeout";
|
||||
static const char CN_AUTO_REJOIN[] = "auto_rejoin";
|
||||
static const char CN_FAILCOUNT[] = "failcount";
|
||||
static const char CN_NO_PROMOTE_SERVERS[] = "servers_no_promotion";
|
||||
|
||||
static const char CN_FAILOVER_TIMEOUT[] = "failover_timeout";
|
||||
static const char CN_SWITCHOVER_TIMEOUT[] = "switchover_timeout";
|
||||
// Parameters for master failure verification and timeout
|
||||
static const char CN_VERIFY_MASTER_FAILURE[] = "verify_master_failure";
|
||||
static const char CN_MASTER_FAILURE_TIMEOUT[] = "master_failure_timeout";
|
||||
|
||||
// Replication credentials parameters for failover/switchover/join
|
||||
static const char CN_REPLICATION_USER[] = "replication_user";
|
||||
static const char CN_REPLICATION_PASSWORD[] = "replication_password";
|
||||
|
||||
/** Default failover timeout */
|
||||
#define DEFAULT_FAILOVER_TIMEOUT "90"
|
||||
|
||||
/** Default switchover timeout */
|
||||
#define DEFAULT_SWITCHOVER_TIMEOUT "90"
|
||||
|
||||
/** Default master failure verification timeout */
|
||||
#define DEFAULT_MASTER_FAILURE_TIMEOUT "10"
|
||||
|
||||
/** Default port */
|
||||
const int PORT_UNKNOWN = 0;
|
||||
|
||||
@ -138,7 +128,7 @@ MariaDBMonitor* MariaDBMonitor::start(MXS_MONITOR *monitor, const MXS_CONFIG_PAR
|
||||
/* Always reset these values. The server dependent values must be reset as servers could have been
|
||||
* added and removed. */
|
||||
handle->m_shutdown = 0;
|
||||
handle->master = NULL;
|
||||
handle->m_master = NULL;
|
||||
handle->init_server_info();
|
||||
|
||||
if (!handle->load_config_params(params))
|
||||
@ -158,10 +148,6 @@ MariaDBMonitor* MariaDBMonitor::start(MXS_MONITOR *monitor, const MXS_CONFIG_PAR
|
||||
MXS_ERROR("Failed to start monitor thread for monitor '%s'.", monitor->name);
|
||||
error = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
handle->status = MXS_MONITOR_RUNNING;
|
||||
}
|
||||
}
|
||||
|
||||
if (error)
|
||||
@ -227,7 +213,7 @@ bool MariaDBMonitor::stop()
|
||||
// There should be no race here as long as admin operations are performed
|
||||
// with the single admin lock locked.
|
||||
bool actually_stopped = false;
|
||||
if (status == MXS_MONITOR_RUNNING)
|
||||
if (m_status == MXS_MONITOR_RUNNING)
|
||||
{
|
||||
m_shutdown = 1;
|
||||
thread_wait(m_thread);
|
||||
@ -263,11 +249,16 @@ void MariaDBMonitor::diagnostics(DCB *dcb) const
|
||||
dcb_printf(dcb, "Slave configured: %s\n", serv_info->slave_configured ? "YES" : "NO");
|
||||
if (serv_info->slave_configured)
|
||||
{
|
||||
dcb_printf(dcb, "Slave IO running: %s\n", serv_info->slave_status.slave_io_running ? "YES" : "NO");
|
||||
dcb_printf(dcb, "Slave SQL running: %s\n", serv_info->slave_status.slave_sql_running ? "YES" : "NO");
|
||||
dcb_printf(dcb, "Master ID: %" PRId64 "\n", serv_info->slave_status.master_server_id);
|
||||
dcb_printf(dcb, "Master binlog file: %s\n", serv_info->slave_status.master_log_file.c_str());
|
||||
dcb_printf(dcb, "Master binlog position: %lu\n", serv_info->slave_status.read_master_log_pos);
|
||||
dcb_printf(dcb, "Slave IO running: %s\n",
|
||||
serv_info->slave_status.slave_io_running ? "YES" : "NO");
|
||||
dcb_printf(dcb, "Slave SQL running: %s\n",
|
||||
serv_info->slave_status.slave_sql_running ? "YES" : "NO");
|
||||
dcb_printf(dcb, "Master ID: %" PRId64 "\n",
|
||||
serv_info->slave_status.master_server_id);
|
||||
dcb_printf(dcb, "Master binlog file: %s\n",
|
||||
serv_info->slave_status.master_log_file.c_str());
|
||||
dcb_printf(dcb, "Master binlog position: %lu\n",
|
||||
serv_info->slave_status.read_master_log_pos);
|
||||
}
|
||||
if (serv_info->gtid_current_pos.server_id != SERVER_ID_UNKNOWN)
|
||||
{
|
||||
@ -429,7 +420,7 @@ bool MariaDBMonitor::set_standalone_master(MXS_MONITORED_SERVER *db)
|
||||
server_clear_set_status(db->server, SERVER_SLAVE, SERVER_MASTER | SERVER_STALE_STATUS);
|
||||
monitor_set_pending_status(db, SERVER_MASTER | SERVER_STALE_STATUS);
|
||||
monitor_clear_pending_status(db, SERVER_SLAVE);
|
||||
master = db;
|
||||
m_master = db;
|
||||
rval = true;
|
||||
}
|
||||
else if (!m_allow_cluster_recovery)
|
||||
@ -445,6 +436,7 @@ bool MariaDBMonitor::set_standalone_master(MXS_MONITORED_SERVER *db)
|
||||
|
||||
void MariaDBMonitor::main_loop()
|
||||
{
|
||||
m_status = MXS_MONITOR_RUNNING;
|
||||
MXS_MONITORED_SERVER *ptr;
|
||||
bool replication_heartbeat;
|
||||
bool detect_stale_master;
|
||||
@ -460,19 +452,19 @@ void MariaDBMonitor::main_loop()
|
||||
if (mysql_thread_init())
|
||||
{
|
||||
MXS_ERROR("mysql_thread_init failed in monitor module. Exiting.");
|
||||
status = MXS_MONITOR_STOPPED;
|
||||
m_status = MXS_MONITOR_STOPPED;
|
||||
return;
|
||||
}
|
||||
|
||||
load_server_journal(m_monitor_base, &master);
|
||||
load_server_journal(m_monitor_base, &m_master);
|
||||
|
||||
while (1)
|
||||
{
|
||||
if (m_shutdown)
|
||||
{
|
||||
status = MXS_MONITOR_STOPPING;
|
||||
m_status = MXS_MONITOR_STOPPING;
|
||||
mysql_thread_end();
|
||||
status = MXS_MONITOR_STOPPED;
|
||||
m_status = MXS_MONITOR_STOPPED;
|
||||
return;
|
||||
}
|
||||
/** Wait base interval */
|
||||
@ -576,7 +568,7 @@ void MariaDBMonitor::main_loop()
|
||||
monitor_set_pending_status(ptr, SERVER_MASTER);
|
||||
|
||||
ptr->server->depth = 0;
|
||||
master = ptr;
|
||||
m_master = ptr;
|
||||
root_master = ptr;
|
||||
}
|
||||
}
|
||||
@ -601,9 +593,9 @@ void MariaDBMonitor::main_loop()
|
||||
find_graph_cycles(this, m_monitor_base->monitored_servers, num_servers);
|
||||
}
|
||||
|
||||
if (master != NULL && SERVER_IS_MASTER(master->server))
|
||||
if (m_master != NULL && SERVER_IS_MASTER(m_master->server))
|
||||
{
|
||||
MySqlServerInfo* master_info = get_server_info(master);
|
||||
MySqlServerInfo* master_info = get_server_info(m_master);
|
||||
// Update cluster gtid domain
|
||||
int64_t domain = master_info->gtid_domain_id;
|
||||
if (m_master_gtid_domain >= 0 && domain != m_master_gtid_domain)
|
||||
@ -614,7 +606,7 @@ void MariaDBMonitor::main_loop()
|
||||
m_master_gtid_domain = domain;
|
||||
|
||||
// Update cluster external master
|
||||
if (SERVER_IS_SLAVE_OF_EXTERNAL_MASTER(master->server))
|
||||
if (SERVER_IS_SLAVE_OF_EXTERNAL_MASTER(m_master->server))
|
||||
{
|
||||
if (master_info->slave_status.master_host != m_external_master_host ||
|
||||
master_info->slave_status.master_port != m_external_master_port)
|
||||
@ -767,7 +759,7 @@ void MariaDBMonitor::main_loop()
|
||||
if (set_standalone_master(m_monitor_base->monitored_servers))
|
||||
{
|
||||
// Update the root_master to point to the standalone master
|
||||
root_master = master;
|
||||
root_master = m_master;
|
||||
}
|
||||
}
|
||||
else
|
||||
@ -794,7 +786,7 @@ void MariaDBMonitor::main_loop()
|
||||
}
|
||||
}
|
||||
|
||||
ss_dassert(root_master == NULL || master == root_master);
|
||||
ss_dassert(root_master == NULL || m_master == root_master);
|
||||
ss_dassert(!root_master ||
|
||||
((root_master->server->status & (SERVER_SLAVE | SERVER_MASTER))
|
||||
!= (SERVER_SLAVE | SERVER_MASTER)));
|
||||
@ -821,8 +813,8 @@ void MariaDBMonitor::main_loop()
|
||||
disable_setting(CN_AUTO_FAILOVER);
|
||||
}
|
||||
// If master seems to be down, check if slaves are receiving events.
|
||||
else if (m_verify_master_failure && master &&
|
||||
SERVER_IS_DOWN(master->server) && slave_receiving_events())
|
||||
else if (m_verify_master_failure && m_master &&
|
||||
SERVER_IS_DOWN(m_master->server) && slave_receiving_events())
|
||||
{
|
||||
MXS_INFO("Master failure not yet confirmed by slaves, delaying failover.");
|
||||
}
|
||||
@ -920,13 +912,13 @@ void MariaDBMonitor::main_loop()
|
||||
else
|
||||
{
|
||||
MXS_ERROR("Query error to master '%s' prevented a possible rejoin operation.",
|
||||
master->server->unique_name);
|
||||
m_master->server->unique_name);
|
||||
}
|
||||
}
|
||||
|
||||
mon_hangup_failed_servers(m_monitor_base);
|
||||
servers_status_current_to_pending(m_monitor_base);
|
||||
store_server_journal(m_monitor_base, master);
|
||||
store_server_journal(m_monitor_base, m_master);
|
||||
release_monitor_servers(m_monitor_base);
|
||||
} /*< while (1) */
|
||||
}
|
||||
@ -981,7 +973,7 @@ void MariaDBMonitor::set_master_heartbeat(MXS_MONITORED_SERVER *database)
|
||||
char heartbeat_insert_query[512] = "";
|
||||
char heartbeat_purge_query[512] = "";
|
||||
|
||||
if (master == NULL)
|
||||
if (m_master == NULL)
|
||||
{
|
||||
MXS_ERROR("set_master_heartbeat called without an available Master server");
|
||||
return;
|
||||
@ -1030,7 +1022,7 @@ void MariaDBMonitor::set_master_heartbeat(MXS_MONITORED_SERVER *database)
|
||||
sprintf(heartbeat_insert_query,
|
||||
"UPDATE maxscale_schema.replication_heartbeat "
|
||||
"SET master_timestamp = %lu WHERE master_server_id = %li AND maxscale_id = %lu",
|
||||
heartbeat, master->server->node_id, m_id);
|
||||
heartbeat, m_master->server->node_id, m_id);
|
||||
|
||||
/* Try to insert MaxScale timestamp into master */
|
||||
if (mxs_mysql_query(database->con, heartbeat_insert_query))
|
||||
@ -1050,7 +1042,7 @@ void MariaDBMonitor::set_master_heartbeat(MXS_MONITORED_SERVER *database)
|
||||
sprintf(heartbeat_insert_query,
|
||||
"REPLACE INTO maxscale_schema.replication_heartbeat "
|
||||
"(master_server_id, maxscale_id, master_timestamp ) VALUES ( %li, %lu, %lu)",
|
||||
master->server->node_id, m_id, heartbeat);
|
||||
m_master->server->node_id, m_id, heartbeat);
|
||||
|
||||
if (mxs_mysql_query(database->con, heartbeat_insert_query))
|
||||
{
|
||||
@ -1095,7 +1087,7 @@ void MariaDBMonitor::set_slave_heartbeat(MXS_MONITORED_SERVER *database)
|
||||
MYSQL_ROW row;
|
||||
MYSQL_RES *result;
|
||||
|
||||
if (master == NULL)
|
||||
if (m_master == NULL)
|
||||
{
|
||||
MXS_ERROR("set_slave_heartbeat called without an available Master server");
|
||||
return;
|
||||
@ -1106,10 +1098,10 @@ void MariaDBMonitor::set_slave_heartbeat(MXS_MONITORED_SERVER *database)
|
||||
sprintf(select_heartbeat_query, "SELECT master_timestamp "
|
||||
"FROM maxscale_schema.replication_heartbeat "
|
||||
"WHERE maxscale_id = %lu AND master_server_id = %li",
|
||||
m_id, master->server->node_id);
|
||||
m_id, m_master->server->node_id);
|
||||
|
||||
/* if there is a master then send the query to the slave with master_id */
|
||||
if (master != NULL && (mxs_mysql_query(database->con, select_heartbeat_query) == 0
|
||||
if (m_master != NULL && (mxs_mysql_query(database->con, select_heartbeat_query) == 0
|
||||
&& (result = mysql_store_result(database->con)) != NULL))
|
||||
{
|
||||
int rows_found = 0;
|
||||
@ -1167,7 +1159,7 @@ void MariaDBMonitor::set_slave_heartbeat(MXS_MONITORED_SERVER *database)
|
||||
database->server->rlag = MAX_RLAG_NOT_AVAILABLE;
|
||||
database->server->node_ts = 0;
|
||||
|
||||
if (master->server->node_id < 0)
|
||||
if (m_master->server->node_id < 0)
|
||||
{
|
||||
MXS_ERROR("error: replication heartbeat: "
|
||||
"master_server_id NOT available for %s:%i",
|
||||
@ -1503,7 +1495,7 @@ bool mysql_handle_switchover(const MODULECMD_ARG* args, json_t** error_out)
|
||||
error = true;
|
||||
}
|
||||
|
||||
// Check given old master or autoselect.
|
||||
// Check given old master. If NULL, manual_switchover() will autoselect.
|
||||
MXS_MONITORED_SERVER* mon_curr_master = NULL;
|
||||
if (current_master)
|
||||
{
|
||||
@ -1514,20 +1506,6 @@ bool mysql_handle_switchover(const MODULECMD_ARG* args, json_t** error_out)
|
||||
error = true;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Autoselect current master
|
||||
if (handle->master)
|
||||
{
|
||||
mon_curr_master = handle->master;
|
||||
}
|
||||
else
|
||||
{
|
||||
const char NO_MASTER[] = "Monitor '%s' has no master server.";
|
||||
PRINT_MXS_JSON_ERROR(error_out, NO_MASTER, mon->name);
|
||||
error = true;
|
||||
}
|
||||
}
|
||||
|
||||
if (!error)
|
||||
{
|
||||
@ -1685,12 +1663,12 @@ MXS_MODULE* MXS_CREATE_MODULE()
|
||||
mxs_monitor_event_enum_values
|
||||
},
|
||||
{CN_AUTO_FAILOVER, MXS_MODULE_PARAM_BOOL, "false"},
|
||||
{CN_FAILOVER_TIMEOUT, MXS_MODULE_PARAM_COUNT, DEFAULT_FAILOVER_TIMEOUT},
|
||||
{CN_SWITCHOVER_TIMEOUT, MXS_MODULE_PARAM_COUNT, DEFAULT_SWITCHOVER_TIMEOUT},
|
||||
{CN_FAILOVER_TIMEOUT, MXS_MODULE_PARAM_COUNT, "90"},
|
||||
{CN_SWITCHOVER_TIMEOUT, MXS_MODULE_PARAM_COUNT, "90"},
|
||||
{CN_REPLICATION_USER, MXS_MODULE_PARAM_STRING},
|
||||
{CN_REPLICATION_PASSWORD, MXS_MODULE_PARAM_STRING},
|
||||
{CN_VERIFY_MASTER_FAILURE, MXS_MODULE_PARAM_BOOL, "true"},
|
||||
{CN_MASTER_FAILURE_TIMEOUT, MXS_MODULE_PARAM_COUNT, DEFAULT_MASTER_FAILURE_TIMEOUT},
|
||||
{CN_MASTER_FAILURE_TIMEOUT, MXS_MODULE_PARAM_COUNT, "10"},
|
||||
{CN_AUTO_REJOIN, MXS_MODULE_PARAM_BOOL, "false"},
|
||||
{CN_NO_PROMOTE_SERVERS, MXS_MODULE_PARAM_SERVERLIST},
|
||||
{MXS_END_MODULE_PARAMS}
|
||||
|
@ -106,7 +106,8 @@ public:
|
||||
*
|
||||
* @return True, if switchover was performed, false otherwise.
|
||||
*/
|
||||
bool manual_switchover(MXS_MONITORED_SERVER* new_master, MXS_MONITORED_SERVER* current_master, json_t** error_out);
|
||||
bool manual_switchover(MXS_MONITORED_SERVER* new_master, MXS_MONITORED_SERVER* current_master,
|
||||
json_t** error_out);
|
||||
|
||||
/**
|
||||
* Perform user-activated failover.
|
||||
@ -149,8 +150,6 @@ public:
|
||||
*/
|
||||
const MySqlServerInfo* get_server_info(const MXS_MONITORED_SERVER* db) const;
|
||||
|
||||
int status; /**< Monitor status. TODO: This should be in MXS_MONITOR */
|
||||
MXS_MONITORED_SERVER *master; /**< Master server for MySQL Master/Slave replication */
|
||||
bool detectStaleMaster; /**< Monitor flag for MySQL replication Stale Master detection */
|
||||
|
||||
private:
|
||||
@ -158,12 +157,14 @@ private:
|
||||
THREAD m_thread; /**< Monitor thread */
|
||||
unsigned long m_id; /**< Monitor ID */
|
||||
volatile int m_shutdown; /**< Flag to shutdown the monitor thread. */
|
||||
ServerInfoMap m_server_info; /**< Contains server specific information */
|
||||
volatile int m_status; /**< Monitor status. */
|
||||
|
||||
// Values updated by monitor
|
||||
int64_t m_master_gtid_domain; /**< Gtid domain currently used by the master */
|
||||
string m_external_master_host; /**< External master host, for fail/switchover */
|
||||
int m_external_master_port; /**< External master port */
|
||||
MXS_MONITORED_SERVER *m_master; /**< Master server for MySQL Master/Slave replication */
|
||||
ServerInfoMap m_server_info; /**< Contains server specific information */
|
||||
|
||||
// Replication topology detection settings
|
||||
bool m_mysql51_replication; /**< Use MySQL 5.1 replication */
|
||||
|
Reference in New Issue
Block a user