golang解析protobuf

我是新的戈兰，我正在尝试在戈兰编写一个家庭自动化框架，使用微框架和protobuf框架。

我目前正在努力尝试实现简单的注册表类型服务。

http://localhost:8080/view/devices

我有以下protobuf定义：

syntax = "proto3";

service DRegistry {
    rpc View(ViewRequest) returns (DeviceRegistry) {}
} 

message DeviceRegistry {
    repeated Device devices = 1;
}

message ViewRequest {
    string Alias = 1;
}

message Device {
    string Alias = 1;
    string HWAddress = 2;
    string WakeUpMethod = 3;
    repeated string BoundServices = 4;
}

然后在我的服务Defization中我有以下几个：

package main

import (
    "log"

    micro "github.com/micro/go-micro"
    proto "github.com/srizzling/gotham/proto/device"

    "golang.org/x/net/context"
)

// DRegistry stands for Device Registry and is how devices register to Gotham.
type DRegistry struct{}

var devices map[string]proto.Device

func (g *DRegistry) View(ctx context.Context, req *proto.ViewRequest, rsp *proto.DeviceRegistry) error {
    filter := req.Alias
devices, err := filterDevices(filter)
rsp.Devices = devices
}

func filterDevices(filter string) (*[]proto.Device, error) {
    // Currently only supports listing a single service for now
    // TODO: expand filter to be more consise
    filteredDevices := make([]proto.Device, 0, len(devices))
    for _, e := range devices {
        for _, f := range e.BoundServices {
            if f == filter {
                filteredDevices = append(filteredDevices, e)
            }
        }
    }
    return &filteredDevices, nil
}

func main() {
    service := micro.NewService(
        micro.Name("DRegistry"),
    )
    proto.RegisterDRegistryHandler(service.Server(), new(DRegistry))

    if err := service.Run(); err != nil {
        log.Fatal(err)
    }
}

cannot use devices (type *[]device.Device) as type []*device.Device in assignment

TLDR：如何为Proto.devicErgistry分配Proto.devices的集合？