71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
package watchdog
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import (
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"fmt"
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"strings"
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"git.g3e.fr/syonad/two/internal/netns"
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"git.g3e.fr/syonad/two/internal/state"
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"git.g3e.fr/syonad/two/internal/watchdog/notify"
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"git.g3e.fr/syonad/two/pkg/db/kv"
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"github.com/dgraph-io/badger/v4"
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)
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const vpcBridge = "br-public"
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func vpcIfaceNames(vpcName string) (host, ns string, err error) {
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parts := strings.SplitN(vpcName, "-", 2)
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if len(parts) < 2 || parts[1] == "" {
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return "", "", fmt.Errorf("nom de VPC %q sans identifiant après le tiret, interfaces indéductibles", vpcName)
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}
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return "vp-" + parts[1] + "-e", "vp-" + parts[1] + "-i", nil
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}
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func CheckVPCs(db *badger.DB, n notify.Notifier) error {
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pairs, err := kv.ListByPrefix(db, prefixVPC)
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if err != nil {
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return fmt.Errorf("watchdog: lecture des vpc: %w", err)
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}
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for _, name := range resourceNames(pairs, prefixVPC) {
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st, err := state.Get(db, prefixVPC+name)
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if err != nil {
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n.Notify(kindVPC, name, fmt.Sprintf("état illisible en base: %v", err))
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continue
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}
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if st != state.Running {
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continue
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}
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checkVPC(name, n)
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}
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return nil
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}
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func checkVPC(name string, n notify.Notifier) {
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hostVeth, nsVeth, err := vpcIfaceNames(name)
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if err != nil {
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n.Notify(kindVPC, name, err.Error())
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return
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}
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if !netns.Exist(name) {
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n.Notify(kindVPC, name, "netns absent (/var/run/netns/"+name+")")
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return
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}
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if p := linkProblem(hostVeth); p != "" {
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n.Notify(kindVPC, name, p)
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}
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if err := netns.Call(name, func() error {
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for _, iface := range []string{nsVeth, vpcBridge} {
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if p := linkProblem(iface); p != "" {
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n.Notify(kindVPC, name, p+" (dans le netns)")
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}
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}
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return nil
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}); err != nil {
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n.Notify(kindVPC, name, fmt.Sprintf("entrée dans le netns impossible: %v", err))
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}
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}
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