// Check if ServiceAccounts have changed. We should do a full push if they have changed.
	saUpdated := updateShardServiceAccount(ep, hostname)

	// For existing endpoints, we need to do full push if service accounts change.
	if saUpdated && pushType != FullPush {
		// Avoid extra logging if already a full push
		log.Infof("Full push, service accounts changed, %v", hostname)
		pushType = FullPush
	}

	maxFormattersLength = 3

	DevStdout = "/dev/stdout"

	builtinEnvoyAccessLogProvider = "envoy"
)

var (
	// this is used for testing. it should not be changed in regular code.
	clusterLookupFn = LookupCluster

	// EnvoyJSONLogFormatIstio map of values for envoy json based access logs for Istio 1.9 onwards.