Initial commit

README.md

@@ -0,0 +1,22 @@
+# Grace pkg
+
+Package with single function for create base context which will be canceled on signals:
+`SIGINT`, `SIGTERM`, `SIGHUP`.
+
+## Example
+
+```go
+package main
+
+import (
+    "context"
+
+    "github.com/chapsuk/grace"
+)
+
+func main() {
+    ctx := grace.ShutdownContext(context.Background())
+    <-ctx.Done()
+    // do graceful shutdown after context was canceled
+}
+```

shutdown.go

@@ -0,0 +1,21 @@
+package grace
+
+import (
+	"context"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+// ShutdownContext returns child context from passed context which will be canceled
+// on incoming signals: SIGINT, SIGTERM, SIGHUP
+func ShutdownContext(c context.Context) context.Context {
+	ctx, cancel := context.WithCancel(c)
+	go func() {
+		ch := make(chan os.Signal, 1)
+		signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
+		<-ch
+		cancel()
+	}()
+	return ctx
+}