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stop healthz http server cleanly #1535

Merged
merged 1 commit into from
Feb 18, 2022
Merged

stop healthz http server cleanly #1535

merged 1 commit into from
Feb 18, 2022

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nuczzz
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@nuczzz nuczzz commented Jan 29, 2022

Description

stop healthz http server cleanly

Todos

  • Tests
  • Documentation
  • Release note

Release Note

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@manuelbuil manuelbuil left a comment

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I only have a question. The rest looks good :)

wg.Add(2)
go func() {
// when Shutdown is called, ListenAndServe immediately return ErrServerClosed.
if err := server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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why && !errors.Is(err, http.ErrServerClosed)?

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We will call server.Shutdown() to shutdown healthz http server when global context is done, and when server.Shutdown() is called, the first goroutine function server.ListenAndServe() immediately return http.ErrServerClosed, so it means we will get http.ErrServerClosed when healthz http server close normally, and close normally should not panic.

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thanks

@luthermonson
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@manuelbuil if you dont have any issues with this we will merge. i think it's clean and gtg

@manuelbuil manuelbuil merged commit e8339a6 into flannel-io:master Feb 18, 2022
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3 participants