hcq/MaxScale
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MXS-1775 Move MariaDBMonitor functionality to tick

Browse Source 
Now all is set for moving MariaDBMonitor on top of
MonitorInstance::main.
This commit is contained in:
Johan Wikman
2018-06-05 15:47:28 +03:00
parent 329a6df662
commit 44b1e805a3
1 changed files with 108 additions and 106 deletions
Download Patch File Download Diff File Expand all files Collapse all files

88
server/modules/monitor/mariadbmon/mariadbmon.cc
View File

@ -307,49 +307,6 @@ void MariaDBMonitor::pre_loop()
void MariaDBMonitor::tick()
{
}
void MariaDBMonitor::process_state_changes()
{
MonitorInstance::process_state_changes();
m_cluster_modified = false;
if (m_auto_failover)
{
m_cluster_modified = handle_auto_failover();
}
// Do not auto-join servers on this monitor loop if a failover (or any other cluster modification)
// has been performed, as server states have not been updated yet. It will happen next iteration.
if (!config_get_global_options()->passive && m_auto_rejoin && !m_cluster_modified &&
cluster_can_be_joined())
{
// Check if any servers should be autojoined to the cluster and try to join them.
handle_auto_rejoin();
}
/* Check if any slave servers have read-only off and turn it on if user so wishes. Again, do not
* perform this if cluster has been modified this loop since it may not be clear which server
* should be a slave. */
if (!config_get_global_options()->passive && m_enforce_read_only_slaves && !m_cluster_modified)
{
enforce_read_only_on_slaves();
}
}
void MariaDBMonitor::main()
{
pre_loop();
while (!should_shutdown())
{
atomic_add_uint64(&m_monitor->ticks, 1);
timespec loop_start;
/* Coarse time has resolution ~1ms (as opposed to 1ns) but this is enough. */
clock_gettime(CLOCK_MONOTONIC_COARSE, &loop_start);
/* Read any admin status changes from SERVER->status_pending. */
monitor_check_maintenance_requests(m_monitor);
/* Update MXS_MONITORED_SERVER->pending_status. This is where the monitor loop writes it's findings.
* Also, backup current status so that it can be compared to any deduced state. */
for (auto mon_srv = m_monitor->monitored_servers; mon_srv; mon_srv = mon_srv->next)
@ -457,6 +414,51 @@ void MariaDBMonitor::main()
/* log master detection failure of first master becomes available after failure */
log_master_changes(root_master);
}
void MariaDBMonitor::process_state_changes()
{
MonitorInstance::process_state_changes();
m_cluster_modified = false;
if (m_auto_failover)
{
m_cluster_modified = handle_auto_failover();
}
// Do not auto-join servers on this monitor loop if a failover (or any other cluster modification)
// has been performed, as server states have not been updated yet. It will happen next iteration.
if (!config_get_global_options()->passive && m_auto_rejoin && !m_cluster_modified &&
cluster_can_be_joined())
{
// Check if any servers should be autojoined to the cluster and try to join them.
handle_auto_rejoin();
}
/* Check if any slave servers have read-only off and turn it on if user so wishes. Again, do not
* perform this if cluster has been modified this loop since it may not be clear which server
* should be a slave. */
if (!config_get_global_options()->passive && m_enforce_read_only_slaves && !m_cluster_modified)
{
enforce_read_only_on_slaves();
}
}
void MariaDBMonitor::main()
{
pre_loop();
while (!should_shutdown())
{
atomic_add_uint64(&m_monitor->ticks, 1);
timespec loop_start;
/* Coarse time has resolution ~1ms (as opposed to 1ns) but this is enough. */
clock_gettime(CLOCK_MONOTONIC_COARSE, &loop_start);
/* Read any admin status changes from SERVER->status_pending. */
monitor_check_maintenance_requests(m_monitor);
tick();
/* Check if monitor events need to be launched. */
process_state_changes();