Import libp2p modules

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

node/modules/helpers/helpers.go

@@ -0,0 +1,25 @@
+package helpers
+
+import (
+	"context"
+
+	"go.uber.org/fx"
+)
+
+type MetricsCtx context.Context
+
+// LifecycleCtx creates a context which will be cancelled when lifecycle stops
+//
+// This is a hack which we need because most of our services use contexts in a
+// wrong way
+func LifecycleCtx(mctx MetricsCtx, lc fx.Lifecycle) context.Context {
+	ctx, cancel := context.WithCancel(mctx)
+	lc.Append(fx.Hook{
+		OnStop: func(_ context.Context) error {
+			cancel()
+			return nil
+		},
+	})
+	return ctx
+}
+