Initial draft for client-go abstraction (Reusable Components)

examples/deployment/main.go

@@ -0,0 +1,120 @@
+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/cloud-bulldozer/go-commons/k8s"
+	log "github.com/sirupsen/logrus"
+	appsv1 "k8s.io/api/apps/v1"
+	v1 "k8s.io/api/core/v1"
+)
+
+func main() {
+	// Usage on common Kubernetes Repository
+	kubeRepo, err := k8s.NewKubernetesRepository()
+	if err != nil {
+		log.Info("Some error occured")
+	}
+	log.Infof("kube Repo object : %+v", kubeRepo)
+
+	var res k8s.Resource = &kubeRepo.Deployment
+	if _, ok := res.(*k8s.DeploymentResource); ok {
+		fmt.Printf("DeploymentResource implements Resource interface. %+v", res)
+	} else {
+		fmt.Printf("DeploymentResource does not implement Resource interface. %+v", res)
+	}
+	deploymentParams := k8s.DeploymentParams{
+		Name:               "testdeployment",
+		Namespace:          "default",
+		Replicas:           2,
+		SelectorLabels:     "app=test",
+		MetadataLabels:     "app=test",
+		NodeSelectorLabels: "app=test",
+		Containers: []v1.Container{
+			{
+				Name:            "sleep",
+				Image:           "gcr.io/google_containers/pause-amd64:3.0",
+				ImagePullPolicy: v1.PullAlways,
+			},
+		},
+	}
+	deployParams, err := kubeRepo.Deployment.Create(context.Background(), deploymentParams, false)
+	if err != nil {
+		fmt.Println("Error creating Deployment:", err)
+	}
+	log.Infof("Created Deployment: %+v", deployParams.(k8s.DeploymentParams).Name)
+
+	deploymentParams = k8s.DeploymentParams{
+		Name:           "testdeployment",
+		Namespace:      "default",
+		SelectorLabels: "app=test",
+		MetadataLabels: "app=test",
+		Replicas:       4,
+		Containers: []v1.Container{
+			{
+				Name:            "sleep",
+				Image:           "gcr.io/google_containers/pause-amd64:3.0",
+				ImagePullPolicy: v1.PullAlways,
+			},
+		},
+	}
+	deployParams, err = kubeRepo.Deployment.Update(context.Background(), deploymentParams, false)
+	if err != nil {
+		fmt.Println("Error Updating Deployment:", err)
+	}
+	log.Infof("Updated Deployment: %+v", deployParams.(k8s.DeploymentParams).Name)
+
+	deploymentParams = k8s.DeploymentParams{
+		Deployment: deployParams.(k8s.DeploymentParams).Deployment,
+	}
+
+	deployment, error := kubeRepo.Deployment.Get(context.Background(), deploymentParams)
+	if error != nil {
+		fmt.Println("Error Getting Deployment:", error)
+	}
+	log.Infof("Got Deployment: %+v", deployment.(*appsv1.Deployment))
+
+	deploymentParams = k8s.DeploymentParams{
+		Name:      "testdeployment",
+		Namespace: "default",
+	}
+	err = kubeRepo.Deployment.Delete(context.Background(), deploymentParams)
+	if err != nil {
+		fmt.Println("Error Deleting Deployment:", err)
+	}
+	log.Infof("Deleted Deployment: %+v", deploymentParams.Name)
+
+	// Usage of individual component explicitly
+	deploymentResource := &k8s.DeploymentResource{}
+	deployment_dup := k8s.DeploymentParams{
+		Name:               "testdeployment",
+		Namespace:          "default",
+		Replicas:           2,
+		SelectorLabels:     "app=test",
+		MetadataLabels:     "app=test",
+		NodeSelectorLabels: "app=test",
+		Containers: []v1.Container{
+			{
+				Name:            "sleep",
+				Image:           "gcr.io/google_containers/pause-amd64:3.0",
+				ImagePullPolicy: v1.PullAlways,
+			},
+		},
+	}
+	deployParams, err = deploymentResource.Create(context.Background(), deployment_dup, false)
+	if err != nil {
+		fmt.Println("Error creating Deployment:", err)
+	}
+	log.Infof("Created Deployment: %+v", deployParams.(k8s.DeploymentParams).Name)
+
+	deploymentParams = k8s.DeploymentParams{
+		Name:      "testdeployment",
+		Namespace: "default",
+	}
+	err = deploymentResource.Delete(context.Background(), deploymentParams)
+	if err != nil {
+		fmt.Println("Error Deleting Deployment:", err)
+	}
+	log.Infof("Deleted Deployment: %+v", deploymentParams.Name)
+}

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/opensearch-project/opensearch-go v1.1.0
 	github.com/prometheus/client_golang v1.15.1
 	github.com/prometheus/common v0.44.0
+	github.com/sirupsen/logrus v1.9.3
 	k8s.io/api v0.27.1
 	k8s.io/apimachinery v0.27.1
 	k8s.io/client-go v0.27.1
@@ -16,7 +17,9 @@ require (
 require (
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 // indirect
+	github.com/imdario/mergo v0.3.6 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stretchr/objx v0.5.0 // indirect
 )
 

go.sum

@@ -64,6 +64,8 @@ github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1/go.mod h1:kpwsk12EmLe
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/imdario/mergo v0.3.6 h1:xTNEAn+kxVO7dTZGu0CegyqKZmoWFI0rF8UxjlB2d28=
+github.com/imdario/mergo v0.3.6/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
@@ -110,7 +112,10 @@ github.com/prometheus/common v0.44.0 h1:+5BrQJwiBB9xsMygAB3TNvpQKOwlkc25LbISbrdO
 github.com/prometheus/common v0.44.0/go.mod h1:ofAIvZbQ1e/nugmZGz4/qCb9Ap1VoSTIO7x0VV9VvuY=
 github.com/prometheus/procfs v0.9.0 h1:wzCHvIvM5SxWqYvwgVL7yJY8Lz3PKn49KQtpgMYJfhI=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stoewer/go-strcase v1.2.0/go.mod h1:IBiWB2sKIp3wVVQ3Y035++gc+knqhUQag1KpM8ahLw8=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
@@ -164,6 +169,7 @@ golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.9.0 h1:KS/R3tvhPqvJvwcKfnBHJwwthS11LRhmM5D59eEXa0s=
 golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=

k8s/deamonset.go

@@ -0,0 +1,38 @@
+package k8s
+
+import (
+	"context"
+	"fmt"
+
+	"k8s.io/client-go/kubernetes"
+)
+
+// Common params shared across the class
+type DeamonSetResource struct {
+	clientSet *kubernetes.Clientset
+	// DeamonSet resource attributes and metadata
+}
+
+// DeamonSet specific params
+type DeamonSetParams struct {
+}
+
+func (p *DeamonSetResource) Create(ctx context.Context, DeamonSetParams interface{}, dryRun bool) (interface{}, error) {
+	fmt.Println("Create DeamonSet here")
+	return nil, nil
+}
+
+func (p *DeamonSetResource) Update(ctx context.Context, DeamonSetParams interface{}, dryRun bool) (interface{}, error) {
+	fmt.Println("Updating DeamonSet here")
+	return nil, nil
+}
+
+func (p *DeamonSetResource) Get(ctx context.Context, DeamonSetParams interface{}) (interface{}, error) {
+	fmt.Println("Getting DeamonSet here")
+	return nil, nil
+}
+
+func (p *DeamonSetResource) Delete(ctx context.Context, DeamonSetParams interface{}) error {
+	fmt.Println("Deleting DeamonSet here")
+	return nil
+}