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Merge pull request #357 from spidernet-io/dns_client
optimize DNS client performance
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| // Copyright 2022 Authors of spidernet-io | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package loadDns | ||
|
|
||
| import ( | ||
| "github.com/miekg/dns" | ||
| "time" | ||
| ) | ||
|
|
||
| // We report for max 1M results. | ||
| const maxRes = 1000000 | ||
|
|
||
| type report struct { | ||
| avgTotal float64 | ||
| average float64 | ||
| tps float64 | ||
|
|
||
| results chan *result | ||
| done chan bool | ||
| total time.Duration | ||
| errorDist map[string]int | ||
| lats []float32 | ||
| totalCount int64 | ||
| successCount int64 | ||
| failedCount int64 | ||
| ReplyCode map[string]int | ||
| } | ||
|
|
||
| func newReport(results chan *result) *report { | ||
| return &report{ | ||
| results: results, | ||
| done: make(chan bool, 1), | ||
| errorDist: make(map[string]int), | ||
| lats: make([]float32, 0, maxRes), | ||
| ReplyCode: make(map[string]int), | ||
| } | ||
| } | ||
|
|
||
| func runReporter(r *report) { | ||
| // Loop will continue until channel is closed | ||
| for res := range r.results { | ||
| r.totalCount++ | ||
| if res.err != nil { | ||
| r.errorDist[res.err.Error()]++ | ||
| r.failedCount++ | ||
| } else { | ||
| r.avgTotal += res.duration.Seconds() | ||
| if len(r.lats) < maxRes { | ||
| r.lats = append(r.lats, float32(res.duration.Milliseconds())) | ||
| } | ||
| rcodeStr := dns.RcodeToString[res.msg.Rcode] | ||
| r.ReplyCode[rcodeStr]++ | ||
| r.successCount++ | ||
| } | ||
| } | ||
| // Signal reporter is done. | ||
| r.done <- true | ||
| } | ||
|
|
||
| func (r *report) finalize(total time.Duration) { | ||
| r.total = total | ||
| r.tps = float64(r.totalCount) / r.total.Seconds() | ||
| r.average = r.avgTotal / float64(len(r.lats)) | ||
| } |
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