some work done

pkg/controller/vip.go

@@ -5,17 +5,60 @@ import (
 	"os/exec"
 	"time"
 
-	"git.giftfish.de/ston1th/vipman/pkg/cluster"
-	"git.giftfish.de/ston1th/vipman/pkg/config"
-	"git.giftfish.de/ston1th/vipman/pkg/vip"
+	"git.giftfish.de/ston1th/haproxy-kb/pkg/cluster"
+	"git.giftfish.de/ston1th/haproxy-kb/pkg/config"
+	"git.giftfish.de/ston1th/haproxy-kb/pkg/haproxy"
+	"git.giftfish.de/ston1th/haproxy-kb/pkg/vip"
 	"github.com/go-logr/logr"
 )
 
-func NewVIPController(cfg *config.Config) (callbacks cluster.Callbacks, err error) {
+type UpdateAction int
+
+const (
+	Add UpdateAction = iota
+	Delete
+)
+
+type ConfigUpdate struct {
+	Action UpdateAction
+	Config haproxy.LoadBalancer
+}
+
+func readConfigUpdates(c chan ConfigUpdate) (cu []ConfigUpdate) {
+	for len(c) > 0 {
+		select {
+		case config := <-c:
+			cu = append(cu, config)
+		}
+	}
+	return
+}
+
+func applyConfigUpdates(cc cluster.CallbackContext, cu []ConfigUpdate) error {
+	for _, c := range cu {
+		switch c.Action {
+		case Add:
+			addIPs(cc, n, []string{c.Config.IP})
+			cc.Set(c.Config.IP, nil)
+		case Delete:
+			cc.Delete(c.Config.IP)
+			deleteIPs(cc, n, []string{c.Config.IP})
+		}
+	}
+}
+
+func NewLBController(cfg *config.Config) (callbacks cluster.Callbacks, err error) {
 	n, err := vip.NewNetworkWithLabel(cfg.Interface, cfg.Label)
 	if err != nil {
 		return
 	}
+	//TODO
+	ha, err := haproxy.NewHAProxyManager("")
+	if err != nil {
+		return
+	}
+	configUpdate := make(chan ConfigUpdate, 100)
+
 	callbacks = cluster.Callbacks{
 		Leader: func(ctx context.Context, cc cluster.CallbackContext) {
 			t := time.NewTicker(time.Second * 10)
@@ -29,7 +72,20 @@ func NewVIPController(cfg *config.Config) (callbacks cluster.Callbacks, err erro
 			}
 			for {
 				cc.Info("leading", "id", cc.ID())
+				cfg, err := cc.Get("config")
+				if err != nil {
+					cc.Error("error getting config key", err)
+					<-t.C
+					continue
+				}
 				addIPs(cc, n, cfg.VirtualIPs)
+				var lbs haproxy.Config
+				err = ha.UpdateConfig(ctx, lbs)
+				if err != nil {
+					cc.Error("error updating haproxy config", err)
+					<-t.C
+					continue
+				}
 				select {
 				case <-ctx.Done():
 					t.Stop()