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refactor: type safe MAC address parsing
+20
-1
+20
-1
internal/hosts/config.go
+20
-1
internal/hosts/config.go
···
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import (
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"encoding/json"
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"fmt"
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+
"net"
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"os"
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)
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type Host struct {
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-
MACAddress string `json:"mac_address"`
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+
MACAddress net.HardwareAddr `json:"mac_address"`
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}
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type HostsConfig map[string]Host
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+
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func (h *Host) UnmarshalJSON(data []byte) error {
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var aux struct {
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MACAddress string `json:"mac_address"`
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}
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+
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if err := json.Unmarshal(data, &aux); err != nil {
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return err
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}
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+
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mac, err := net.ParseMAC(aux.MACAddress)
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if err != nil {
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return fmt.Errorf("invalid MAC address %q: %w", aux.MACAddress, err)
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}
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h.MACAddress = mac
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return nil
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}
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func LoadHostsConfig(filename string) (HostsConfig, error) {
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data, err := os.ReadFile(filename)