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go-shutdowner: Simple graceful shutdowns in Go
source link: https://jlelse.blog/dev/go-shutdowner
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go-shutdowner: Simple graceful shutdowns in Go
Published on 2021-06-19 in 👨💻 Dev
Short link: https://b.jlel.se/s/471
As I already mentioned, I’m trying to modularize parts of GoBlog to make the code more organized and to be able to test it better (thanks to the tests, I always notice small bugs that I can then correct).
One of these modules, which I even decided to extract as a separate library, contains methods so that I can stop the HTTP servers or close the database connection when the program ends, also called a graceful shutdown.
The library allows this code (100% covered with tests 🤓) to be used in other applications as well. The usage is quite simple. Here is the sample code from the repository:
package main
import (
"log"
goshutdowner "git.jlel.se/jlelse/go-shutdowner"
)
func main() {
// Declare shutdowner
var sd goshutdowner.Shutdowner
// Add a function to execute on shutdown
sd.Add(func() {
log.Println("Shutdown")
})
log.Println("Started")
// CTRL + C or otherwise interrupt the program
// Wait for shutdowner to finish
sd.Wait()
}
Output:
$ go run example.go
2021/06/19 08:48:07 Started
^C2021/06/19 08:48:08 Shutdown
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