if cal := b.cachedFileAccessLog(); cal != nil {
		return cal
	}

	// We need to build access log. This is needed either on first access or when mesh config changes.
	al := model.FileAccessLogFromMeshConfig(mesh.AccessLogFile, mesh)

	b.mutex.Lock()
	defer b.mutex.Unlock()
	b.fileAccesslog = al

	return al
}

func addAccessLogFilter() *accesslog.AccessLogFilter {

		// For built-in provider, fallback to MeshConfig for formatting options when LogFormat unset.
		if fp.Name == builtinEnvoyAccessLogProvider && prov.EnvoyFileAccessLog.LogFormat == nil {
			al = FileAccessLogFromMeshConfig(prov.EnvoyFileAccessLog.Path, push.Mesh)
		} else {
			al = fileAccessLogFromTelemetry(prov.EnvoyFileAccessLog)
		}
	case *meshconfig.MeshConfig_ExtensionProvider_EnvoyHttpAls: