Try /etc/machine-id for linux first (#60)

phuslu · web-flow · commit efa678f304ab · 2020-10-19T11:31:50.000+02:00
diff --git a/hostid_linux.go b/hostid_linux.go
@@ -5,6 +5,9 @@ package xid
 import "io/ioutil"
 
 func readPlatformMachineID() (string, error) {
-	b, err := ioutil.ReadFile("/sys/class/dmi/id/product_uuid")
+	b, err := ioutil.ReadFile("/etc/machine-id")
+	if err != nil || len(b) == 0 {
+		b, err = ioutil.ReadFile("/sys/class/dmi/id/product_uuid")
+	}
 	return string(b), err
 }
