f-29: watchdog: add checkvpc #29

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

internal/watchdog/resources.go

@@ -0,0 +1,52 @@
+package watchdog
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	"git.g3e.fr/syonad/two/internal/netif"
+)
+
+const (
+	prefixVPC    = "vpc/"
+	prefixSubnet = "subnet/"
+	prefixVM     = "vm/"
+
+	kindVPC    = "vpc"
+	kindSubnet = "subnet"
+	kindVM     = "vm"
+
+	stateSuffix = "/state"
+)
+
+func resourceNames(pairs map[string]string, prefix string) []string {
+	names := make([]string, 0, len(pairs))
+	for key := range pairs {
+		name, ok := strings.CutPrefix(key, prefix)
+		if !ok {
+			continue
+		}
+		name, ok = strings.CutSuffix(name, stateSuffix)
+		if !ok {
+			continue
+		}
+		if name == "" || strings.Contains(name, "/") {
+			continue
+		}
+		names = append(names, name)
+	}
+	sort.Strings(names)
+	return names
+}
+
+func linkProblem(iface string) string {
+	up, err := netif.LinkIsUp(iface)
+	switch {
+	case err != nil:
+		return fmt.Sprintf("interface %s introuvable: %v", iface, err)
+	case !up:
+		return fmt.Sprintf("interface %s down", iface)
+	}
+	return ""
+}