some refactoring

pkg/etcd/etcd.go

@@ -0,0 +1,54 @@
+package etcd
+
+import (
+	"fmt"
+	"github.com/coreos/etcd/client"
+	"golang.org/x/net/context"
+	"log"
+    "time"
+)
+
+const etcdKeyTemplate = "/service/%s"
+
+type EtcdClient struct {
+	apiClient client.KeysAPI
+}
+
+func NewEctdClient(host string) *EtcdClient {
+    etcdClient := EtcdClient{}
+
+    cfg := client.Config{
+        Endpoints:               []string{host},
+        Transport:               client.DefaultTransport,
+        HeaderTimeoutPerRequest: time.Second,
+    }
+
+    c, err := client.New(cfg)
+    if err != nil {
+        log.Fatal(err)
+    }
+
+    etcdClient.apiClient = client.NewKeysAPI(c)
+
+    return &etcdClient
+}
+
+
+func (c *EtcdClient) DeleteEtcdKey(clusterName string) error {
+	options := client.DeleteOptions{
+		Recursive: true,
+	}
+
+	keyName := fmt.Sprintf(etcdKeyTemplate, clusterName)
+
+	resp, err := c.apiClient.Delete(context.Background(), keyName, &options)
+	if resp != nil {
+		log.Printf("Response: %+v", *resp)
+	} else {
+		log.Fatal("No response from etcd")
+	}
+
+	log.Printf("Deleting key %s from ETCD", clusterName)
+
+	return err
+}