oppi.li
1package main
2
3import (
4 "context"
5 "os"
6 "os/signal"
7
8 "gopkg.in/src-d/go-git.v4"
9 . "gopkg.in/src-d/go-git.v4/_examples"
10)
11
12// Graceful cancellation example of a basic git operation such as Clone.
13func main() {
14 CheckArgs("<url>", "<directory>")
15 url := os.Args[1]
16 directory := os.Args[2]
17
18 // Clone the given repository to the given directory
19 Info("git clone %s %s", url, directory)
20
21 stop := make(chan os.Signal, 1)
22 signal.Notify(stop, os.Interrupt)
23
24 // The context is the mechanism used by go-git, to support deadlines and
25 // cancellation signals.
26 ctx, cancel := context.WithCancel(context.Background())
27 defer cancel() // cancel when we are finished consuming integers
28
29 go func() {
30 <-stop
31 Warning("\nSignal detected, canceling operation...")
32 cancel()
33 }()
34
35 Warning("To gracefully stop the clone operation, push Crtl-C.")
36
37 // Using PlainCloneContext we can provide to a context, if the context
38 // is cancelled, the clone operation stops gracefully.
39 _, err := git.PlainCloneContext(ctx, directory, false, &git.CloneOptions{
40 URL: url,
41 Progress: os.Stdout,
42 })
43
44 // If the context was cancelled, an error is returned.
45 CheckIfError(err)
46}