simplified parsing & getting annotations from kubernetes svc resource

converter/deployment.go

@@ -1,17 +1,24 @@
 package converter
 
-func DeploymentToKubernetes (filePath string) (*v1.Deployment, error) {
-	file, err := os.Open(filePath)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
+import (
+	"errors"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/client-go/kubernetes/scheme"
+	"os"
+)
 
-	var cfg v1.Deployment
-	decoder := yaml.NewDecoder(file)
-	if err := decoder.Decode(&cfg); err != nil {
-		return nil, err
+// NOTE this is really not used, just wanted to convert
+// to a kubernetes resource to our packets for practice.
+func ServiceToKubernetes(filePath string) (*v1.Service, error) {
+	decode := scheme.Codecs.UniversalDeserializer().Decode
+	stream, _ := os.ReadFile(filePath)
+	// second param (gKV) is top level (GroupVersionKind) w/ group, version & kind
+	obj, gKV, _ := decode(stream, nil, nil)
+
+	// handle multiple resources split by ---
+	if gKV.Kind == "Service" {
+		return obj.(*v1.Service), nil
 	}
 
-	return &cfg, nil
+	return nil, errors.New("Unable to find service resource")
 }

generator/kubernetes.go

@@ -1,43 +1,15 @@
 package generator
 
 import (
-	"fmt"
-	"os"
-
 	"github.com/kevinmidboe/traefik-etcd-advertiser/client/etcd"
-	"gopkg.in/yaml.v3"
-	"k8s.io/api/apps/v1"
+	"k8s.io/api/core/v1"
 )
 
-func createPacket3(config *v1.Deployment) []etcd.EtcdPacket {
-	blocks := []etcd.EtcdPacket{}
-
-	fmt.Println("DockerToEtcd")
-	fmt.Println("kube")
-	fmt.Println(config.APIVersion)
-	fmt.Println(*kubeConfig)
-
-	return blocks
-}
-
-func KubernetesToEtcd(config *v1.Deployment, packetList *[]etcd.EtcdPacket) {
-	items := createPacket3(config)
-
-	*packetList = append(*packetList, items...)
-}
-
-func (filePath string) (*v1.Deployment, error) {
-	file, err := os.Open(filePath)
-	if err != nil {
-		return nil, err
+func KubernetesToEtcd(config *v1.Service, packetList *[]etcd.EtcdPacket) {
+	for key, val := range config.ObjectMeta.Annotations {
+	  *packetList = append(*packetList, etcd.EtcdPacket{
+			Key: key,
+			Value: val,
+		})
 	}
-	defer file.Close()
-
-	var cfg v1.Deployment
-	decoder := yaml.NewDecoder(file)
-	if err := decoder.Decode(&cfg); err != nil {
-		return nil, err
-	}
-
-	return &cfg, nil
 }

main.go

@@ -1,11 +1,8 @@
 package main
 
 import (
-	"fmt"
 	"log"
-	"os"
 	"strings"
-	"github.com/davecgh/go-spew/spew"
 
 	"github.com/kevinmidboe/traefik-etcd-advertiser/client/etcd"
 	"github.com/kevinmidboe/traefik-etcd-advertiser/config"
@@ -22,7 +19,7 @@ func main() {
 	filename, publish := config.ParseCli()
 
 	// setup etcd client
-	// etcdManager, err := etcd.NewClient()
+	etcdManager, err := etcd.NewClient()
 	if err != nil {
 		panic(err)
 	}
@@ -38,20 +35,14 @@ func main() {
 
 		generator.DockerToEtcd(dockerConfig, &packets)
 
-	} else if strings.Contains(filename, "deployment") {
-		kubeConfig, err := generator.KubernetesToEtcd(filename)
+	} else if strings.Contains(filename, "kubernetes") {
+		// build etcd packets from kubernetes service resource
+		kubeConfig, err := converter.ServiceToKubernetes(filename)
 		if err != nil {
 			log.Fatalf("Error loading traefik YAML config file: %v\n", err)
 		}
 
-		fmt.Println("kube")
-		fmt.Println(*kubeConfig)
-		fmt.Println(*kubeConfig.Spec.Replicas)
-		fmt.Printf("as: %+v\n", kubeConfig.Spec.Selector.MatchLabels["app"])
-		spew.Dump(*kubeConfig.Sepc.Selector)
-		
-		fmt.Println(kubeConfig.ObjectMeta.Name)
-		fmt.Println(kubeConfig.GetObjectMeta())
+		generator.KubernetesToEtcd(kubeConfig, &packets)
 	} else {
 		// build etcd packets from traefik config
 		traefikConfig, err := converter.TraefikFromYaml(filename)