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

Added documentation to new routines

Browse Source 
Added documentation to new routines
This commit is contained in:
MassimilianoPinto 2014-06-25 10:21:30 +02:00
parent e1e172fe03
commit c14700fcff
1 changed files with 28 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
server/modules/monitor/mysql_mon.c
View File

@ -683,6 +683,7 @@ static bool mon_print_fail_status(
*
* @param ptr The list of servers to monitor
* @param node_id The MySQL server_id to fetch
* @return The server with the required server_id
*/
static SERVER *
getServerByNodeId(MONITOR_SERVERS *ptr, int node_id) {
@ -703,6 +704,7 @@ getServerByNodeId(MONITOR_SERVERS *ptr, int node_id) {
*
* @param ptr The list of servers to monitor
* @param node_id The MySQL server_id to fetch
* @return The slave server of this node_id
*/
static SERVER *getSlaveOfNodeId(MONITOR_SERVERS *ptr, int node_id) {
SERVER *current;
@ -717,6 +719,14 @@ static SERVER *getSlaveOfNodeId(MONITOR_SERVERS *ptr, int node_id) {
return NULL;
}
/*******
* This function sets the replication heartbeat
* into the maxscale_schema.replication_heartbeat table in the current master.
* The inserted values will be seen from all slaves replication from this master.
*
* @param handle The monitor handle
* @param database The number database server
*/
static void set_master_heartbeat(MYSQL_MONITOR *handle, MONITOR_SERVERS *database) {
unsigned long id = handle->id;
time_t heartbeat;
@ -813,6 +823,14 @@ static void set_master_heartbeat(MYSQL_MONITOR *handle, MONITOR_SERVERS *databas
}
}
/*******
* This function gets the replication heartbeat
* from the maxscale_schema.replication_heartbeat table in the current slave
* and stores the timestamp and replication lag in the slave server struct
*
* @param handle The monitor handle
* @param database The number database server
*/
static void set_slave_heartbeat(MYSQL_MONITOR *handle, MONITOR_SERVERS *database) {
unsigned long id = handle->id;
time_t heartbeat;
@ -892,7 +910,16 @@ static void set_slave_heartbeat(MYSQL_MONITOR *handle, MONITOR_SERVERS *database
}
}
/* get the replication tree */
/*******
* This function computes the replication tree
* from a set of MySQL Master/Slave monitored servers
* and returns the root server with SERVER_MASTER bit
*
* @param handle The monitor handle
* @param num_servers The number of servers monitored
* @return The server at root level with SERVER_MASTER bit
*/
static MONITOR_SERVERS *get_replication_tree(MYSQL_MONITOR *handle, int num_servers) {
MONITOR_SERVERS *ptr;
SERVER *current;