Исходники и презентации

lessons/contexts/context_inheritance_1/main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+func main() {
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	makeRequest(ctx)
+}
+
+func makeRequest(ctx context.Context) {
+	timer := time.NewTimer(5 * time.Second)
+	defer timer.Stop()
+
+	newCtx, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+
+	select {
+	case <-newCtx.Done():
+		fmt.Println("canceled")
+	case <-timer.C:
+		fmt.Println("timer")
+	}
+}