public static Protocol requestProtocol(final HTTPRequestProperties request) {
        if (request == null) {
            return Protocol.HTTP;
        }
        final String scheme = request.getScheme();
        if (scheme.startsWith("http")) {
            return Protocol.HTTP;
        }
        return Protocol.gRPC;
    }
Adapt the {@code entry} into an upstream metrics {@link HTTPServiceMeshMetric.Builder}.

@return the {@link HTTPServiceMeshMetric.Builder} adapted from the given entry.
oap-server/server-receiver-plugin/envoy-metrics-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/envoy/als/LogEntry2MetricsAdapter.java