Add custom variables support for contacts

[sjoegren]

This will sync the columns custom_variable_names and custom_variable_values for the contacts table and construct custom_variables map from those. This is done the same way as for hosts and services.

Signed-off-by: Aksel Sjögren asjogren@itrsgroup.com

[sni]

Looks good, the only thing which worries me a bit, is that this change turns the contacts from a fetch once static table into a dynamic table which will be regularly synchronized because this change introduces the first dynamic column for the contacts table. And contacts usually tend to change not very often but may be huge in numbers. Especially since the contact has no last_update timestamp to reduce the number of updates.

[jacobbaungard]

Perhaps we could add a last_update to the contacts table - until then maybe we just sync the values statically ?

[sni]

that would be a good approach

[sni]

let me double check that. Setting it to static should make the table fetched once on startup and after reloads. Settings it to dynamic should update that table every couple of seconds.

[sni]

ok, i was wrong. Only a few tables are synchronized regularly: Status, Hosts, Services, Downtimes and Comments. Only every FullUpdateInterval all dynamic tables are synchronized.

[sni]

Thanks, i merged it manually.