Add network information to /status

cmd/rqlited/main.go

@@ -159,6 +159,7 @@ func main() {
 
 	// Register remaining status providers.
 	httpServ.RegisterStatus("cluster", clstrServ)
+	httpServ.RegisterStatus("network", tcp.NetworkReporter{})
 
 	// Prepare the cluster-joiner
 	joiner, err := createJoiner(cfg, credStr)

tcp/network.go

@@ -0,0 +1,53 @@
+package tcp
+
+import (
+	"net"
+)
+
+// NetworkReporter is a reporter for network information
+type NetworkReporter struct{}
+
+// Address is a struct for holding network addresses
+type Address struct {
+	Addr string `json:"address"`
+}
+
+// InterfaceDetail is a struct for holding network interface details
+type InterfaceDetail struct {
+	Flags           string    `json:"flags"`
+	HardwareAddress string    `json:"hardware_address"`
+	Addresses       []Address `json:"addresses"`
+}
+
+// InterfaceStats is a map of network interface names to InterfaceDetail
+type InterfaceStats map[string]InterfaceDetail
+
+// Stats returns network interface details
+func (n NetworkReporter) Stats() (map[string]interface{}, error) {
+	interfaces, err := net.Interfaces()
+	if err != nil {
+		return nil, err
+	}
+
+	stats := make(map[string]interface{})
+	for _, i := range interfaces {
+		var addresses []Address
+
+		addrs, err := i.Addrs()
+		if err != nil {
+			return nil, err
+		}
+
+		for _, addr := range addrs {
+			addresses = append(addresses, Address{Addr: addr.String()})
+		}
+
+		stats[i.Name] = InterfaceDetail{
+			Flags:           i.Flags.String(),
+			HardwareAddress: i.HardwareAddr.String(),
+			Addresses:       addresses,
+		}
+	}
+
+	return stats, nil
+}