Handle Large LiveStatus Datasets Better? about nagiostv-react

[chriscareycode]

I like this idea of having the API only return items not in OK status to help the product scale and decrease the CPU on the server.

For Nagios CGIs it looks like we can do this adding this hostservice and servicestatus parameter to the API calls:

Hosts
http://10.10.0.42/nagios/cgi-bin/statusjson.cgi?query=hostlist&details=true&hoststatus=down+unreachable+pending

Services
http://10.10.0.42/nagios/cgi-bin/statusjson.cgi?query=servicelist&details=true&servicestatus=warning+critical+unknown+pending

For Livestatus we can do this with:

GET hosts
Filter: state = 1
Filter: state = 2
Or: 2

GET services
Filter: state = 1
Filter: state = 2
Filter: state = 3
Or: 3

After making this change, payloads are way smaller and this will make a huge improvement on the server CPU and the web browser. But now that we are only fetching things that are not UP and not OK, I need to fetch a new lightweight API "hostcount" and "servicecount" to get the "total # of hosts" and "total # of services" since we no longer have that information from the hoststatus and servicestatus apis.

Got through most of the work for this. I can share a dev build with you to try out.

[chriscareycode]

This has been added in https://github.com/chriscareycode/nagiostv-react/releases/tag/v0.8.7

[chriscareycode]

@bjhiggins Please test out 0.8.7, see how it works and report back