hack update: generate unit tests for new k8rs version

hack/update/filesystem.go

@@ -17,37 +17,58 @@ limitations under the License.
 package update
 
 import (
+	"bytes"
+	"fmt"
 	"io/ioutil"
 	"os"
 	"path/filepath"
+
+	"k8s.io/klog/v2"
 )
 
 // fsUpdate updates local filesystem repo files according to the given schema and data.
 // Returns if the update actually changed anything, and any error occurred.
 func fsUpdate(fsRoot string, schema map[string]Item, data interface{}) (changed bool, err error) {
+	var mode os.FileMode = 0644
 	for path, item := range schema {
 		path = filepath.Join(fsRoot, path)
-		blob, err := ioutil.ReadFile(path)
-		if err != nil {
-			return false, err
-		}
-		info, err := os.Stat(path)
-		if err != nil {
-			return false, err
+		// if the item's content is already set, give it precedence over any current file content
+		var content []byte
+		if item.Content == nil {
+			info, err := os.Stat(path)
+			if err != nil {
+				return false, fmt.Errorf("unable to get file content: %w", err)
+			}
+			mode = info.Mode()
+			content, err = ioutil.ReadFile(path)
+			if err != nil {
+				return false, fmt.Errorf("unable to read file content: %w", err)
+			}
+			item.Content = content
 		}
-		mode := info.Mode()
-
-		item.Content = blob
-		chg, err := item.apply(data)
-		if err != nil {
-			return false, err
+		if err := item.apply(data); err != nil {
+			return false, fmt.Errorf("unable to update file: %w", err)
 		}
-		if chg {
+		if !bytes.Equal(content, item.Content) {
+			// make sure path exists
+			if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
+				return false, fmt.Errorf("unable to create directory: %w", err)
+			}
+			if err := ioutil.WriteFile(path, item.Content, mode); err != nil {
+				return false, fmt.Errorf("unable to write file: %w", err)
+			}
 			changed = true
 		}
-		if err := ioutil.WriteFile(path, item.Content, mode); err != nil {
-			return false, err
-		}
 	}
 	return changed, nil
 }
+
+// Loadf returns the file content read as byte slice
+func Loadf(path string) []byte {
+	blob, err := ioutil.ReadFile(path)
+	if err != nil {
+		klog.Fatalf("Unable to load file %s: %v", path, err)
+		return nil
+	}
+	return blob
+}

hack/update/github.go

@@ -73,7 +73,7 @@ func ghCreatePR(ctx context.Context, owner, repo, base, branch, title string, is
 	}
 
 	// update files
-	changes, err := ghUpdate(ctx, owner, repo, baseTree, token, schema, data)
+	changes, err := ghUpdate(ctx, owner, repo, token, schema, data)
 	if err != nil {
 		return nil, fmt.Errorf("unable to update files: %w", err)
 	}
@@ -126,16 +126,16 @@ func ghCreatePR(ctx context.Context, owner, repo, base, branch, title string, is
 	klog.Infof("PR branch '%s' successfully created: %s", prBranch, prRef.GetURL())
 
 	// create PR
-	plan, err := GetPlan(schema, data)
+	_, pretty, err := GetPlan(schema, data)
 	if err != nil {
-		klog.Fatalf("Unable to parse schema: %v\n%s", err, plan)
+		klog.Fatalf("Unable to parse schema: %v\n%s", err, pretty)
 	}
 	modifiable := true
 	pr, _, err := ghc.PullRequests.Create(ctx, owner, repo, &github.NewPullRequest{
 		Title:               github.String(title),
 		Head:                github.String(*fork.Owner.Login + ":" + prBranch),
 		Base:                github.String(base),
-		Body:                github.String(fmt.Sprintf("fixes: #%d\n\nAutomatically created PR to update repo according to the Plan:\n\n```\n%s\n```", issue, plan)),
+		Body:                github.String(fmt.Sprintf("fixes: #%d\n\nAutomatically created PR to update repo according to the Plan:\n\n```\n%s\n```", issue, pretty)),
 		MaintainerCanModify: &modifiable,
 	})
 	if err != nil {
@@ -170,40 +170,40 @@ func ghFindPR(ctx context.Context, title, owner, repo, base, token string) (url
 
 // ghUpdate updates remote GitHub owner/repo tree according to the given token, schema and data.
 // Returns resulting changes, and any error occurred.
-func ghUpdate(ctx context.Context, owner, repo string, tree *github.Tree, token string, schema map[string]Item, data interface{}) (changes []*github.TreeEntry, err error) {
+func ghUpdate(ctx context.Context, owner, repo string, token string, schema map[string]Item, data interface{}) (changes []*github.TreeEntry, err error) {
 	ghc := ghClient(ctx, token)
 
 	// load each schema item content and update it creating new GitHub TreeEntries
-	cnt := len(schema) // expected number of files to change
-	for _, org := range tree.Entries {
-		if *org.Type == "blob" {
-			if item, match := schema[*org.Path]; match {
-				blob, _, err := ghc.Git.GetBlobRaw(ctx, owner, repo, *org.SHA)
-				if err != nil {
-					return nil, fmt.Errorf("unable to get file: %w", err)
-				}
-				item.Content = blob
-				changed, err := item.apply(data)
-				if err != nil {
-					return nil, fmt.Errorf("unable to update file: %w", err)
-				}
-				if changed {
-					// add github.TreeEntry that will replace original path content with the updated one
-					changes = append(changes, &github.TreeEntry{
-						Path:    org.Path,
-						Mode:    org.Mode,
-						Type:    org.Type,
-						Content: github.String(string(item.Content)),
-					})
-				}
-				if cnt--; cnt == 0 {
-					break
-				}
+	for path, item := range schema {
+		// if the item's content is already set, give it precedence over any current file content
+		var content string
+		if item.Content == nil {
+			file, _, _, err := ghc.Repositories.GetContents(ctx, owner, repo, path, &github.RepositoryContentGetOptions{Ref: ghBase})
+			if err != nil {
+				return nil, fmt.Errorf("unable to get file content: %w", err)
 			}
+			content, err = file.GetContent()
+			if err != nil {
+				return nil, fmt.Errorf("unable to read file content: %w", err)
+			}
+			item.Content = []byte(content)
+		}
+		if err := item.apply(data); err != nil {
+			return nil, fmt.Errorf("unable to update file: %w", err)
+		}
+		if content != string(item.Content) {
+			// add github.TreeEntry that will replace original path content with the updated one or add new if one doesn't exist already
+			// ref: https://developer.github.com/v3/git/trees/#tree-object
+			rcPath := path // make sure to copy path variable as its reference (not value!) is passed to changes
+			rcMode := "100644"
+			rcType := "blob"
+			changes = append(changes, &github.TreeEntry{
+				Path:    &rcPath,
+				Mode:    &rcMode,
+				Type:    &rcType,
+				Content: github.String(string(item.Content)),
+			})
 		}
-	}
-	if cnt != 0 {
-		return nil, fmt.Errorf("unable to find all the files (%d missing) - check the Plan: %w", cnt, err)
 	}
 	return changes, nil
 }

hack/update/kubernetes_version/templates/v1beta2/containerd-api-port.yaml

@@ -0,0 +1,67 @@
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: InitConfiguration
+localAPIEndpoint:
+  advertiseAddress: 1.1.1.1
+  bindPort: 12345
+bootstrapTokens:
+  - groups:
+      - system:bootstrappers:kubeadm:default-node-token
+    ttl: 24h0m0s
+    usages:
+      - signing
+      - authentication
+nodeRegistration:
+  criSocket: /run/containerd/containerd.sock
+  name: "mk"
+  kubeletExtraArgs:
+    node-ip: 1.1.1.1
+  taints: []
+---
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: ClusterConfiguration
+apiServer:
+  certSANs: ["127.0.0.1", "localhost", "1.1.1.1"]
+  extraArgs:
+    enable-admission-plugins: "NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota"
+controllerManager:
+  extraArgs:
+    leader-elect: "false"
+scheduler:
+  extraArgs:
+    leader-elect: "false"
+certificatesDir: /var/lib/minikube/certs
+clusterName: mk
+controlPlaneEndpoint: control-plane.minikube.internal:12345
+dns:
+  type: CoreDNS
+etcd:
+  local:
+    dataDir: /var/lib/minikube/etcd
+    extraArgs:
+      proxy-refresh-interval: "70000"
+kubernetesVersion: v1.19.0
+networking:
+  dnsDomain: cluster.local
+  podSubnet: "10.244.0.0/16"
+  serviceSubnet: 10.96.0.0/12
+---
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+authentication:
+  x509:
+    clientCAFile: /var/lib/minikube/certs/ca.crt
+cgroupDriver: systemd
+clusterDomain: "cluster.local"
+# disable disk resource management by default
+imageGCHighThresholdPercent: 100
+evictionHard:
+  nodefs.available: "0%"
+  nodefs.inodesFree: "0%"
+  imagefs.available: "0%"
+failSwapOn: false
+staticPodPath: /etc/kubernetes/manifests
+---
+apiVersion: kubeproxy.config.k8s.io/v1alpha1
+kind: KubeProxyConfiguration
+clusterCIDR: "10.244.0.0/16"
+metricsBindAddress: 1.1.1.1:10249

hack/update/kubernetes_version/templates/v1beta2/containerd-pod-network-cidr.yaml

@@ -0,0 +1,67 @@
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: InitConfiguration
+localAPIEndpoint:
+  advertiseAddress: 1.1.1.1
+  bindPort: 8443
+bootstrapTokens:
+  - groups:
+      - system:bootstrappers:kubeadm:default-node-token
+    ttl: 24h0m0s
+    usages:
+      - signing
+      - authentication
+nodeRegistration:
+  criSocket: /run/containerd/containerd.sock
+  name: "mk"
+  kubeletExtraArgs:
+    node-ip: 1.1.1.1
+  taints: []
+---
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: ClusterConfiguration
+apiServer:
+  certSANs: ["127.0.0.1", "localhost", "1.1.1.1"]
+  extraArgs:
+    enable-admission-plugins: "NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota"
+controllerManager:
+  extraArgs:
+    leader-elect: "false"
+scheduler:
+  extraArgs:
+    leader-elect: "false"
+certificatesDir: /var/lib/minikube/certs
+clusterName: mk
+controlPlaneEndpoint: control-plane.minikube.internal:8443
+dns:
+  type: CoreDNS
+etcd:
+  local:
+    dataDir: /var/lib/minikube/etcd
+    extraArgs:
+      proxy-refresh-interval: "70000"
+kubernetesVersion: v1.19.0
+networking:
+  dnsDomain: cluster.local
+  podSubnet: "192.168.32.0/20"
+  serviceSubnet: 10.96.0.0/12
+---
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+authentication:
+  x509:
+    clientCAFile: /var/lib/minikube/certs/ca.crt
+cgroupDriver: systemd
+clusterDomain: "cluster.local"
+# disable disk resource management by default
+imageGCHighThresholdPercent: 100
+evictionHard:
+  nodefs.available: "0%"
+  nodefs.inodesFree: "0%"
+  imagefs.available: "0%"
+failSwapOn: false
+staticPodPath: /etc/kubernetes/manifests
+---
+apiVersion: kubeproxy.config.k8s.io/v1alpha1
+kind: KubeProxyConfiguration
+clusterCIDR: "192.168.32.0/20"
+metricsBindAddress: 1.1.1.1:10249

hack/update/kubernetes_version/templates/v1beta2/containerd.yaml

@@ -0,0 +1,67 @@
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: InitConfiguration
+localAPIEndpoint:
+  advertiseAddress: 1.1.1.1
+  bindPort: 8443
+bootstrapTokens:
+  - groups:
+      - system:bootstrappers:kubeadm:default-node-token
+    ttl: 24h0m0s
+    usages:
+      - signing
+      - authentication
+nodeRegistration:
+  criSocket: /run/containerd/containerd.sock
+  name: "mk"
+  kubeletExtraArgs:
+    node-ip: 1.1.1.1
+  taints: []
+---
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: ClusterConfiguration
+apiServer:
+  certSANs: ["127.0.0.1", "localhost", "1.1.1.1"]
+  extraArgs:
+    enable-admission-plugins: "NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota"
+controllerManager:
+  extraArgs:
+    leader-elect: "false"
+scheduler:
+  extraArgs:
+    leader-elect: "false"
+certificatesDir: /var/lib/minikube/certs
+clusterName: mk
+controlPlaneEndpoint: control-plane.minikube.internal:8443
+dns:
+  type: CoreDNS
+etcd:
+  local:
+    dataDir: /var/lib/minikube/etcd
+    extraArgs:
+      proxy-refresh-interval: "70000"
+kubernetesVersion: v1.19.0
+networking:
+  dnsDomain: cluster.local
+  podSubnet: "10.244.0.0/16"
+  serviceSubnet: 10.96.0.0/12
+---
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+authentication:
+  x509:
+    clientCAFile: /var/lib/minikube/certs/ca.crt
+cgroupDriver: systemd
+clusterDomain: "cluster.local"
+# disable disk resource management by default
+imageGCHighThresholdPercent: 100
+evictionHard:
+  nodefs.available: "0%"
+  nodefs.inodesFree: "0%"
+  imagefs.available: "0%"
+failSwapOn: false
+staticPodPath: /etc/kubernetes/manifests
+---
+apiVersion: kubeproxy.config.k8s.io/v1alpha1
+kind: KubeProxyConfiguration
+clusterCIDR: "10.244.0.0/16"
+metricsBindAddress: 1.1.1.1:10249