private void updateBalancingState(final ConnectivityState state, final AbstractPicker picker) {
        if (state == currentState && picker.isEquivalentTo(currentPicker)) {
            return;
        }
        helper.updateBalancingState(state, picker);
        currentState = state;
        currentPicker = picker;
        LOG.info("AbstractPicker update, serviceName:{}, all subchannels:{}, state:{}", serviceName, picker.getSubchannelsInfo(), state);
    }
Updates picker with the list of active subchannels (state == READY).
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-grpc/src/main/java/org/apache/shenyu/plugin/grpc/loadbalance/AbstractLoadBalancer.java