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Add guard to avg_request_time when requests_time_num is 0 avoiding NaN metric

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cn 2019-01-29 14:06:10 +01:00
parent d542a4417d
commit f306670a49
1 changed files with 7 additions and 2 deletions
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7
metrics_graphite.lua
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@ -104,7 +104,10 @@ function MetricsGraphite:worker()
return
end
local avg_request_time = this.stats:get("request_time_sum") / this.stats:get("request_time_num")
local avg_request_time = nil
if this.stats:get("request_time_num") > 0 then
avg_request_time = this.stats:get("request_time_sum") / this.stats:get("request_time_num")
end
self.stats:set("request_time_sum", 0)
self.stats:set("request_time_num", 0)
@ -117,7 +120,9 @@ function MetricsGraphite:worker()
sock:send(this.mbase .. ".nginx_metrics.acc_request_length " .. this.stats:get("request_length") .. " " .. ngx.time() .. "\n")
sock:send(this.mbase .. ".nginx_metrics.acc_bytes_sent " .. this.stats:get("bytes_sent") .. " " .. ngx.time() .. "\n")
if avg_request_time then
sock:send(this.mbase .. ".nginx_metrics.avg_request_time " .. avg_request_time .. " " .. ngx.time() .. "\n")
end
for k,_ in pairs(self.query_status) do
sock:send(this.mbase .. ".nginx_metrics.num_" .. k .. " " .. this.stats:get(k) .. " " .. ngx.time() .. "\n")