public static DubboUpstream buildAliveDubboUpstream(final String upstreamUrl) {
        return DubboUpstream.builder().upstreamHost(LOCALHOST)
                .protocol("dubbo://").upstreamUrl(upstreamUrl).weight(DEFAULT_WEIGHT)
                .warmup(Constants.WARMUP_TIME)
                .timestamp(System.currentTimeMillis())
                .build();
    }
Build alive dubbo upstream.

@param upstreamUrl the upstreamUrl
@return the dubbo upstream
shenyu-admin/src/main/java/org/apache/shenyu/admin/utils/CommonUpstreamUtils.java