如何使用golang获取xen服务器内存、磁盘、网络和CPU信息？

import (
    "github.com/nilshell/xmlrpc"
    "fmt"
)

client, err := xmlrpc.NewClient("http://xen-server-ip/xmlrpc", nil)
if err != nil {
    fmt.Println("Failed to connect to Xen server:", err)
    return
}

result := make(map[string]interface{})
err = client.Call("host.get_metrics", "host", &result)
if err != nil {
    fmt.Println("Failed to get host metrics:", err)
    return
}
memoryTotal := result["memory_total"].(int)
memoryFree := result["memory_free"].(int)
fmt.Println("Total Memory:", memoryTotal, "KB")
fmt.Println("Free Memory:", memoryFree, "KB")

result = make(map[string]interface{})
err = client.Call("host.get_disks", "host", &result)
if err != nil {
    fmt.Println("Failed to get host disks:", err)
    return
}
for _, disk := range result["disks"].([]interface{}) {
    diskSize := disk.(map[string]interface{})["size"].(int)
    fmt.Println("Disk Size:", diskSize, "KB")
}

result = make(map[string]interface{})
err = client.Call("host.get_interfaces", "host", &result)
if err != nil {
    fmt.Println("Failed to get host interfaces:", err)
    return
}
for _, iface := range result["interfaces"].([]interface{}) {
    ifaceName := iface.(map[string]interface{})["device"].(string)
    fmt.Println("Interface Name:", ifaceName)
}

result = make(map[string]interface{})
err = client.Call("host.get_cpu_info", "host", &result)
if err != nil {
    fmt.Println("Failed to get host CPU info:", err)
    return
}
cpuModel := result["modelname"].(string)
cpuCount := result["cpu_count"].(int)
fmt.Println("CPU Model:", cpuModel)
fmt.Println("CPU Count:", cpuCount)