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Added cap to number of elements in the map

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This commit is contained in:
Luca Deri 2021-03-23 18:04:05 +01:00
parent b0ad0a5c7b
commit d7a1a9a38a
1 changed files with 24 additions and 3 deletions
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27
scripts/lua/rest/v1/charts/host/map.lua
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@ -23,10 +23,26 @@ local max_radius = 0
local bubble_mode = tonumber(_GET["bubble_mode"]) or 0
local show_remote = _GET["show_remote"] or true
-- ###################################################
local function shrinkTable(t, max_num)
local n = 1
local t2 = {}
for i,v in pairsByField(t, 'r', rev) do
if(n < max_num) then
t2[n] = v
n = n + 1
end
end
return(t2)
end
-- ###################################################
local function processHost(hostname, host)
local line
local label = hostinfo2hostkey(host)
-- starts is defined inside the lua_utils module
@ -176,8 +192,13 @@ else
callback_utils.foreachLocalHost(ifname, processHost)
end
local ratio = max_radius / MAX_RADIUS_PX
-- Reduce the number of hosts to a reasonable value (< max_num)
local max_num = 999
local_hosts = shrinkTable(local_hosts, max_num)
remote_hosts = shrinkTable(remote_hosts, max_num)
-- Normalize values
local ratio = max_radius / MAX_RADIUS_PX
for i,v in pairs(local_hosts) do
local_hosts[i].r = math.floor(MIN_RADIUS_PX + local_hosts[i].r / ratio)
end