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Use module parameters in monitors

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All monitors now declare the parameters that they use. This allows the
core to check the validity of the parameters before they are passed to the
monitor. It also simplifies the processing of the parameters as they are
guaranteed to be valid.
This commit is contained in:
Markus Mäkelä
2017-01-04 11:54:30 +02:00
parent cefc253e2c
commit 5a290cb0b8
6 changed files with 54 additions and 87 deletions
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64
server/modules/monitor/mysqlmon/mysql_mon.c
View File

@ -112,7 +112,17 @@ MXS_MODULE* MXS_CREATE_MODULE()
MONITOR_VERSION,
"A MySQL Master/Slave replication monitor",
"V1.5.0",
&MyObject
&MyObject,
{
{"detect_replication_lag", MXS_MODULE_PARAM_BOOL, "false"},
{"detect_stale_master", MXS_MODULE_PARAM_BOOL, "true"},
{"detect_stale_slave", MXS_MODULE_PARAM_BOOL, "true"},
{"mysql51_replication", MXS_MODULE_PARAM_BOOL, "false"},
{"multimaster", MXS_MODULE_PARAM_BOOL, "false"},
{"failover", MXS_MODULE_PARAM_BOOL, "false"},
{"failcount", MXS_MODULE_PARAM_COUNT, "5"},
{MXS_END_MODULE_PARAMS}
}
};
return &info;
@ -238,14 +248,7 @@ startMonitor(MONITOR *monitor, const CONFIG_PARAMETER* params)
handle->server_info = server_info;
handle->shutdown = 0;
handle->id = config_get_gateway_id();
handle->replicationHeartbeat = 0;
handle->detectStaleMaster = true;
handle->detectStaleSlave = true;
handle->script = NULL;
handle->multimaster = false;
handle->mysql51_replication = false;
handle->failover = false;
handle->failcount = MYSQLMON_DEFAULT_FAILCOUNT;
handle->warn_failover = true;
memset(handle->events, false, sizeof(handle->events));
spinlock_init(&handle->lock);
@ -254,38 +257,17 @@ startMonitor(MONITOR *monitor, const CONFIG_PARAMETER* params)
/** This should always be reset to NULL */
handle->master = NULL;
handle->detectStaleMaster = config_get_bool(params, "detect_stale_master");
handle->detectStaleSlave = config_get_bool(params, "detect_stale_slave");
handle->replicationHeartbeat = config_get_bool(params, "detect_replication_lag");
handle->multimaster = config_get_bool(params, "multimaster");
handle->failover = config_get_bool(params, "failover");
handle->failcount = config_get_integer(params, "failcount");
handle->mysql51_replication = config_get_bool(params, "mysql51_replication");
while (params)
{
if (!strcmp(params->name, "detect_stale_master"))
{
handle->detectStaleMaster = config_truth_value(params->value);
}
else if (!strcmp(params->name, "detect_stale_slave"))
{
handle->detectStaleSlave = config_truth_value(params->value);
}
else if (!strcmp(params->name, "detect_replication_lag"))
{
handle->replicationHeartbeat = config_truth_value(params->value);
}
else if (!strcmp(params->name, "multimaster"))
{
handle->multimaster = config_truth_value(params->value);
}
else if (!strcmp(params->name, "failover"))
{
handle->failover = config_truth_value(params->value);
}
else if (!strcmp(params->name, "failcount"))
{
handle->failcount = atoi(params->value);
if (handle->failcount <= 0)
{
MXS_ERROR("[%s] Invalid value for 'failcount': %s", monitor->name, params->value);
error = true;
}
}
else if (!strcmp(params->name, "script"))
if (!strcmp(params->name, "script"))
{
if (externcmd_can_execute(params->value))
{
@ -308,10 +290,6 @@ startMonitor(MONITOR *monitor, const CONFIG_PARAMETER* params)
have_events = true;
}
}
else if (!strcmp(params->name, "mysql51_replication"))
{
handle->mysql51_replication = config_truth_value(params->value);
}
params = params->next;
}
@ -1123,7 +1101,7 @@ monitorMain(void *arg)
*/
if (nrounds != 0 &&
(((nrounds * MON_BASE_INTERVAL_MS) % mon->interval) >=
MON_BASE_INTERVAL_MS) && (!mon->server_pending_changes))
MON_BASE_INTERVAL_MS) && (!mon->server_pending_changes))
{
nrounds += 1;
continue;