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-rw-r--r--_examples/context/main.go46
1 files changed, 46 insertions, 0 deletions
diff --git a/_examples/context/main.go b/_examples/context/main.go
new file mode 100644
index 0000000..72885ff
--- /dev/null
+++ b/_examples/context/main.go
@@ -0,0 +1,46 @@
+package main
+
+import (
+ "context"
+ "os"
+ "os/signal"
+
+ "gopkg.in/src-d/go-git.v4"
+ . "gopkg.in/src-d/go-git.v4/_examples"
+)
+
+// Gracefull cancellation example of a basic git operation such as Clone.
+func main() {
+ CheckArgs("<url>", "<directory>")
+ url := os.Args[1]
+ directory := os.Args[2]
+
+ // Clone the given repository to the given directory
+ Info("git clone %s %s", url, directory)
+
+ stop := make(chan os.Signal, 1)
+ signal.Notify(stop, os.Interrupt)
+
+ // The context is the mechanism used by go-git, to support deadlines and
+ // cancellation signals.
+ ctx, cancel := context.WithCancel(context.Background())
+ defer cancel() // cancel when we are finished consuming integers
+
+ go func() {
+ <-stop
+ Warning("\nSignal detected, canceling operation...")
+ cancel()
+ }()
+
+ Warning("To gracefully stop the clone operation, push Crtl-C.")
+
+ // Using PlainCloneContext we can provide to a context, if the context
+ // is cancelled, the clone operation stops gracefully.
+ _, err := git.PlainCloneContext(ctx, directory, false, &git.CloneOptions{
+ URL: url,
+ Progress: os.Stdout,
+ })
+
+ // If the context was cancelled, an error is returned.
+ CheckIfError(err)
+}