blob: 3f6c3afb8800bf4dd4900b6c929fb646081e64b9 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
package interrupt
import (
"fmt"
"os"
"os/signal"
"syscall"
)
// Cleaner type referes to a function with no inputs that returns an error
type Cleaner func() error
var cleaners []Cleaner
var active = false
// RegisterCleaner is responsible for regisreting a cleaner function. When a function is registered, the Signal watcher is started in a goroutine.
func RegisterCleaner(f ...Cleaner) {
for _, fn := range f {
cleaners = append(cleaners, fn)
if !active {
active = true
go func() {
ch := make(chan os.Signal, 1)
signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM, os.Interrupt)
<-ch
// Prevent un-terminated ^C character in terminal
fmt.Println()
clean()
os.Exit(1)
}()
}
}
}
// Clean invokes all registered cleanup functions
func clean() {
fmt.Println("Cleaning")
for _, f := range cleaners {
_ = f()
}
cleaners = []Cleaner{}
}
|
