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MXS-1775 Flush pending status to servers using common code

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This commit is contained in:
Johan Wikman
2018-05-25 09:09:21 +03:00
parent 15b1c270a3
commit 0833db8a48
7 changed files with 40 additions and 27 deletions
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30
include/maxscale/monitor.hh
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@ -64,6 +64,15 @@ protected:
*/
virtual void configure(const MXS_CONFIG_PARAMETER* pParams);
/**
* @brief Flush pending server status to each server.
*
* This function is expected to flush the pending status to each server.
* The default implementation simply copies monitored_server->pending_status
* to server->status.
*/
virtual void flush_server_status();
/**
* @brief Monitor the servers
*
@ -71,15 +80,18 @@ protected:
* implementation should probe all servers, i.e. call @c update_server_status
* on each server.
*
* The default implementation will:
* - Not call @c update_server_status for a server that is in maintenance.
* - Before calling, update the previous status of the server.
* - Before calling, update the pending status of the monitored server object
* to the status of the corresponing server object.
* - Ensure that there is a connection to the server. If that fails, then
* the pending status will be updated accordingly and @c update_server_status
* will *not* be called.
* - After the call, update the error count of the server.
* The default implementation will for each server:
* - Do nothing, if the server is in maintenance.
* - Before calling, store the previous status of the server.
* - Before calling, set the pending status of the monitored server object
* to the status of the corresponding server object.
* - Ensure that there is a connection to the server.
* If there is, @c update_server_status is called.
* If there is not, the pending status will be updated accordingly and
* @c update_server_status will *not* be called.
* - After the call, update the error count of the server if it is down.
*
* Finally, it will call @c flush_server_status.
*/
virtual void tick();