ContinueAsNew + signals

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func SignalWorkflow(ctx workflow.Context) error {
	logger := workflow.GetLogger(ctx)
	requestLockCh := workflow.GetSignalChannel(ctx, "test-signals")
	for iterations := 0; iterations < 10; iterations++ {       <- here, the logic will give up after 10 batch receive of signals
		var n int
		for requestLockCh.ReceiveAsync(&n) {
			logger.Info("Got signal", "N", n)
		}
		workflow.Sleep(ctx, time.Second)
	}
	return workflow.NewContinueAsNewError(ctx, SignalWorkflow)
}

you may want to add additional handling of signals just before return

func SignalWorkflow(ctx workflow.Context) error {
	logger := workflow.GetLogger(ctx)
	requestLockCh := workflow.GetSignalChannel(ctx, "test-signals")
	for iterations := 0; iterations < 10; iterations++ {
		var n int
		for requestLockCh.ReceiveAsync(&n) {
			logger.Info("Got signal", "N", n)
		}
		workflow.Sleep(ctx, time.Second)
	}
	
	var n int                             <- additional logic
	for requestLockCh.ReceiveAsync(&n) {
		logger.Info("Got signal", "N", n)
	}
	return workflow.NewContinueAsNewError(ctx, SignalWorkflow)
}

SDK logs also shows

2020/11/16 14:57:16 INFO  Workflow has unhandled signals Namespace default TaskQueue test-queue WorkerID 42150@Chriss-MacBook-Pro.local@ WorkflowType SignalWorkflow WorkflowID test-workflow RunID 79cc26c1-5fa3-420e-b2dd-af18ac6b2cd9 SignalNames [test-signals]