introduce basic fact collection

client/facts/facts.go

@@ -0,0 +1,38 @@
+package facts
+
+import (
+	"net/http"
+
+	"git.dubyatp.xyz/orphanage/client/httputil"
+	"github.com/zcalusic/sysinfo"
+)
+
+type FactsResponse struct {
+	APIVersion  string                  `json:"apiVersion"`
+	CPUInfo     sysinfo.CPU             `json:"cpu"`
+	BoardInfo   sysinfo.Board           `json:"motherboard"`
+	DeviceInfo  sysinfo.Product         `json:"device"`
+	ChassisInfo sysinfo.Chassis         `json:"chassis"`
+	MemoryInfo  sysinfo.Memory          `json:"memory"`
+	NetworkInfo []sysinfo.NetworkDevice `json:"network"`
+	StorageInfo []sysinfo.StorageDevice `json:"storage"`
+}
+
+func GetFacts(next http.Handler) http.Handler {
+	var si sysinfo.SysInfo
+	si.GetSysInfo()
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		resp := FactsResponse{
+			APIVersion:  "v1",
+			CPUInfo:     si.CPU,
+			BoardInfo:   si.Board,
+			DeviceInfo:  si.Product,
+			ChassisInfo: si.Chassis,
+			MemoryInfo:  si.Memory,
+			NetworkInfo: si.Network,
+			StorageInfo: si.Storage,
+		}
+		httputil.WriteJSON(w, http.StatusOK, resp)
+	})
+}