[QG][KIM] Application that generates loads by creating or deleting Runtime CR

hack/performance/README.md

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+# Runtime Load Generator
+
+## Overview
+
+The `rt-load` program generates performance test loads by creating or deleting runtime resources in a Kubernetes cluster. All of the runtime custom resources created by this program are linked to the same Gardener cluster.
+
+## Building the Binary
+
+To build the `rt-load` binary from the `main.go` file, follow these steps:
+
+1. Open a terminal and navigate to the directory containing the `main.go` file.
+2. Run the following command to build the binary:
+
+    ```sh
+    go build -o rt-load main.go
+    ```
+
+## Usage
+
+```sh
+rt-load <command> [options]
+```
+
+## Commands
+
+### `create`
+
+Creates a specified number of runtime resources.
+
+#### Options
+
+- `--load-id <STRING>`: The identifier (label) of the created load (**required**).
+- `--name-prefix <STRING>`: The prefix used to generate each runtime name (**required**).
+- `--kubeconfig <STRING>`: The path to the Kubeconfig file (**required**).
+- `--rt-number <INT>`: The number of the runtimes to be created (**required**).
+- `--rt-template <STRING>`: The absolute path to the YAML file with the runtime template (**required**).
+- `--run-on-ci <BOOL>`: Identifies if the load is running on CI (**optional**, default is `false`).
+
+#### Example
+
+```sh
+./rt-load create --load-id my-load --name-prefix my-runtime --kubeconfig /path/to/kubeconfig --rt-number 10 --rt-template /path/to/template.yaml
+```
+
+### `delete`
+
+Deletes runtime resources based on the specified load ID.
+
+#### Options
+
+- `--load-id <LOAD-ID>`: The identifier of the created load (**required**).
+- `--kubeconfig <FILE>`: The path to the Kubeconfig file (**required**).
+
+#### Example
+
+```sh
+./rt-load delete --load-id my-load --kubeconfig /path/to/kubeconfig
+```
+
+## Running on CI
+
+When running the `rt-load` program in a Continuous Integration (CI) environment, you can use the `--run-on-ci` option to bypass interactive prompts. This is useful for automated CI/CD pipelines where user interaction is not possible.
+
+### Example
+
+To create runtime resources in a CI environment, use the following command:
+
+```sh
+./rt-load create --load-id my-load --name-prefix my-runtime --kubeconfig /path/to/kubeconfig --rt-number 10 --rt-template /path/to/template.yaml --run-on-ci true
+```
+
+In this example, the `--run-on-ci` option is set to `true`, which ensures that the program runs without requiring any user input.
+
+## Notes
+
+- Ensure that the `kubeconfig` file points to the correct Kubernetes cluster where the runtime resources are to be created or deleted.
+- The `--load-id ` will be included as a value of the label `kim.performance.loadId` on the Runtime CR that was created by this program.
+- The `--run-on-ci` option is useful for automated CI/CD pipelines to bypass interactive prompts.

hack/performance/action/worker.go

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+package action
+
+import (
+	"context"
+	"math/rand"
+
+	imv1 "github.com/kyma-project/infrastructure-manager/api/v1"
+	"k8s.io/client-go/tools/clientcmd"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+type Worker interface {
+	Create() error
+	Delete() error
+}
+
+type WorkerData struct {
+	loadID     string
+	namePrefix string
+	rtNumber   int
+	k8sClient  client.Client
+	rtTemplate imv1.Runtime
+}
+
+func NewWorker(loadID, namePrefix, kubeconfigPath string, rtNumber int, rtTemplate imv1.Runtime) (Worker, error) {
+	config, err := clientcmd.BuildConfigFromFlags("", kubeconfigPath)
+	if err != nil {
+		return nil, err
+	}
+
+	k8sClient, err := client.New(config, client.Options{})
+	if err != nil {
+		return nil, err
+	}
+
+	err = imv1.AddToScheme(k8sClient.Scheme())
+	if err != nil {
+		return nil, err
+	}
+
+	return &WorkerData{
+		loadID:     loadID,
+		namePrefix: namePrefix,
+		rtNumber:   rtNumber,
+		k8sClient:  k8sClient,
+		rtTemplate: rtTemplate,
+	}, nil
+}
+
+func (w WorkerData) Create() error {
+	runtimes := w.prepareRuntimeBatch()
+
+	for i := 0; i < w.rtNumber; i++ {
+		err := w.k8sClient.Create(context.Background(), &runtimes.Items[i])
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (w WorkerData) Delete() error {
+	runtimes, err := w.deleteRuntimeBatch()
+	if err != nil {
+		return err
+	}
+	for _, item := range runtimes.Items {
+		err = w.k8sClient.Delete(context.Background(), &item)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (w WorkerData) prepareRuntimeBatch() imv1.RuntimeList {
+
+	baseRuntime := w.rtTemplate.DeepCopy()
+	baseRuntime.Name = ""
+	baseRuntime.GenerateName = w.namePrefix + "-"
+	baseRuntime.Labels["kim.performance.loadId"] = w.loadID
+
+	if baseRuntime.Spec.Shoot.Name == "" {
+		baseRuntime.Spec.Shoot.Name = generateRandomName(7) + "-" + w.loadID
+	}
+
+	runtimeBatch := imv1.RuntimeList{}
+
+	for i := 0; i < w.rtNumber; i++ {
+		runtimeBatch.Items = append(runtimeBatch.Items, *baseRuntime)
+	}
+
+	return runtimeBatch
+}
+
+func (w WorkerData) deleteRuntimeBatch() (imv1.RuntimeList, error) {
+	runtimesToDelete := imv1.RuntimeList{}
+	err := w.k8sClient.List(context.Background(), &runtimesToDelete, client.MatchingLabels{"kim.performance.loadId": w.loadID})
+	if err != nil {
+		return imv1.RuntimeList{}, err
+	}
+	return runtimesToDelete, nil
+}
+
+func generateRandomName(count int) string {
+	letterRunes := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+	runes := make([]rune, count)
+	for i := range runes {
+		runes[i] = letterRunes[rand.Intn(len(letterRunes))]
+	}
+	return string(runes)
+}

hack/performance/cmd/cmd.go

@@ -0,0 +1,118 @@
+package cmd
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"os"
+
+	imv1 "github.com/kyma-project/infrastructure-manager/api/v1"
+	"github.com/kyma-project/infrastructure-manager/hack/performance/action"
+	"k8s.io/apimachinery/pkg/util/yaml"
+)
+
+type OperationType int
+
+const (
+	Create OperationType = iota
+	Delete
+	Unknown
+)
+
+func Execute() (OperationType, action.Worker, error) {
+	var parsedRuntime imv1.Runtime
+
+	createCmd := flag.NewFlagSet("create", flag.ExitOnError)
+	deleteCmd := flag.NewFlagSet("delete", flag.ExitOnError)
+
+	loadID := createCmd.String("load-id", "", "the identifier (label) of the created load (required)")
+	namePrefix := createCmd.String("name-prefix", "", "the prefix used to generate each runtime name (required)")
+	kubeconfig := createCmd.String("kubeconfig", "", "the path to the kubeconfig file (required)")
+	rtNumber := createCmd.Int("rt-number", 0, "the number of the runtimes to be created (required)")
+	templatePath := createCmd.String("rt-template", "", "the path to the yaml file with the runtime template (required)")
+	runOnCi := createCmd.Bool("run-on-ci", false, "identifies if the load is running on CI")
+
+	loadIDDelete := deleteCmd.String("load-id", "", "the identifier (label) of the created load (required)")
+	kubeconfigDelete := deleteCmd.String("kubeconfig", "", "the path to the kubeconfig file (required)")
+
+	if len(os.Args) < 2 {
+		fmt.Println("expected 'create' or 'delete' subcommands")
+		os.Exit(1)
+	}
+
+	switch os.Args[1] {
+	case "create":
+		createCmd.Parse(os.Args[2:])
+		if *loadID == "" || *namePrefix == "" || *kubeconfig == "" || *rtNumber == 0 || *templatePath == "" {
+			fmt.Println("all flags --load-id, --name-prefix, --kubeconfig, --template-path and --rt-number are required")
+			createCmd.Usage()
+			os.Exit(1)
+		}
+
+		file, err := os.Open(*templatePath)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "error opening file:", err)
+			return Unknown, nil, err
+		}
+		defer func(file *os.File) {
+			err = file.Close()
+			if err != nil {
+				fmt.Fprintln(os.Stderr, "error closing file:", err)
+			}
+		}(file)
+		parsedRuntime, err = readFromSource(file)
+		if err != nil {
+			return Unknown, nil, err
+		}
+
+		if *runOnCi == false {
+			var response string
+			fmt.Printf("Do you want to create %d runtimes? [y/n]: ", *rtNumber)
+			fmt.Scanln(&response)
+			if response != "y" {
+				fmt.Println("Operation cancelled.")
+				os.Exit(1)
+			}
+		}
+		fmt.Printf("Creating load with ID: %s, Name Prefix: %s, Kubeconfig: %s, Runtime Number: %d\n", *loadID, *namePrefix, *kubeconfig, *rtNumber)
+		worker, err := action.NewWorker(*loadID, *namePrefix, *kubeconfig, *rtNumber, parsedRuntime)
+		return Create, worker, err
+	case "delete":
+		deleteCmd.Parse(os.Args[2:])
+		if *loadIDDelete == "" || *kubeconfigDelete == "" {
+			fmt.Println("all flags --load-id and --kubeconfig are required")
+			deleteCmd.Usage()
+			os.Exit(1)
+		}
+		fmt.Printf("Deleting load with ID: %s, Kubeconfig: %s\n", *loadIDDelete, *kubeconfigDelete)
+		worker, err := action.NewWorker(*loadIDDelete, "", *kubeconfigDelete, 0, imv1.Runtime{})
+		return Delete, worker, err
+	default:
+		fmt.Println("expected 'create' or 'delete' subcommands")
+		os.Exit(1)
+	}
+	return Unknown, nil, nil
+}
+
+func readFromSource(reader io.Reader) (imv1.Runtime, error) {
+	data, err := io.ReadAll(reader)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error reading file:", err)
+		return imv1.Runtime{}, err
+	}
+	runtime, err := parseInputToRuntime(data)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error parsing input:", err)
+		return imv1.Runtime{}, err
+	}
+	return runtime, nil
+}
+
+func parseInputToRuntime(data []byte) (imv1.Runtime, error) {
+	runtime := imv1.Runtime{}
+	err := yaml.Unmarshal(data, &runtime)
+	if err != nil {
+		return imv1.Runtime{}, err
+	}
+	return runtime, nil
+}

hack/performance/go.mod

@@ -0,0 +1,56 @@
+module github.com/kyma-project/infrastructure-manager/hack/performance
+
+go 1.23.1
+
+require (
+	github.com/kyma-project/infrastructure-manager v0.0.0-20241010165136-c9d296aadebd
+	k8s.io/apimachinery v0.31.0
+	k8s.io/client-go v0.31.0
+	sigs.k8s.io/controller-runtime v0.19.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
+	github.com/evanphx/json-patch/v5 v5.9.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
+	github.com/gardener/gardener v1.100.0 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/imdario/mergo v0.3.16 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	golang.org/x/net v0.28.0 // indirect
+	golang.org/x/oauth2 v0.21.0 // indirect
+	golang.org/x/sys v0.24.0 // indirect
+	golang.org/x/term v0.23.0 // indirect
+	golang.org/x/text v0.17.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/api v0.31.0 // indirect
+	k8s.io/apiextensions-apiserver v0.31.0 // indirect
+	k8s.io/klog/v2 v2.130.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340 // indirect
+	k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
+)