You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: gateway_ring_http.go
    path of file: ./repos/pyroscope/pkg/storegateway
    
    the code of the file until where you have to start completion: // SPDX-License-Identifier: AGPL-3.0-only
// Provenance-includes-location: https://github.com/cortexproject/cortex/blob/master/pkg/storegateway/gateway_http.go
// Provenance-includes-license: Apache-2.0
// Provenance-includes-copyright: The Cortex Authors.

package storegateway

import (
	_ "embed" // Used to e
    
func (c *StoreGateway) RingHandler(w http.ResponseWriter, req *http.Request) {
	if c.State() != services.Running {
		// we cannot read the ring before the store gateway is in Running state,
		// because that would lead to race condition.
		writeMessage(c.logger, w, "Store gateway is not running yet.")
		return
	}

	c.ring.ServeHTTP(w, req)
}