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Go http server with graceful shutdown
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package main | |
import ( | |
"context" | |
"log" | |
"net/http" | |
"os" | |
"os/signal" | |
"syscall" | |
) | |
func main() { | |
var srv http.Server | |
idleConnsClosed := make(chan struct{}) | |
go func() { | |
sigint := make(chan os.Signal, 1) | |
// interrupt signal sent from terminal | |
signal.Notify(sigint, os.Interrupt) | |
// sigterm signal sent from kubernetes | |
signal.Notify(sigint, syscall.SIGTERM) | |
<-sigint | |
// We received an interrupt signal, shut down. | |
if err := srv.Shutdown(context.Background()); err != nil { | |
// Error from closing listeners, or context timeout: | |
log.Printf("HTTP server Shutdown: %v", err) | |
} | |
close(idleConnsClosed) | |
}() | |
if err := srv.ListenAndServe(); err != http.ErrServerClosed { | |
// Error starting or closing listener: | |
log.Printf("HTTP server ListenAndServe: %v", err) | |
} | |
<-idleConnsClosed | |
} |
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