feature(provider): Make some of the runner parameters configurable in the extra config at garm runtime

README.md

@@ -16,3 +16,27 @@ docker buildx build -t edp.buildth.ing/devfw-cicd/garm:provider-ec-[new_number]
 
 kubectl apply -f ../garm/deploy.yaml
 ´´´
+
+# Configuration
+
+## Extra Specs
+
+You can configure runner behavior by passing extra specifications as JSON in the pool's `extra_specs` field.
+
+### Available Parameters
+
+| Parameter | Type | Default Value | Description |
+|-----------|------|---------------|-------------|
+| `runner_workdir` | string | `/runner/_work/` | The working directory for the runner |
+| `disable_runner_update` | boolean | `true` | Whether to disable automatic runner updates |
+| `runner_ephemeral` | boolean | `true` | Whether the runner should be ephemeral (single-use) |
+
+### Example
+
+```json
+{
+  "runner_workdir": "/custom/path/",
+  "disable_runner_update": false,
+  "runner_ephemeral": false
+}
+```

internal/spec/spec.go

@@ -1,6 +1,7 @@
 package spec
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/url"
 	"strings"
@@ -16,6 +17,12 @@ type GitHubScopeDetails struct {
 	Enterprise string
 }
 
+type RunnerExtraSpecs struct {
+	RunnerWorkDir       string `json:"runner_workdir"`
+	DisableRunnerUpdate *bool  `json:"disable_runner_update"`
+	RunnerEphemeral     *bool  `json:"runner_ephemeral"`
+}
+
 func ExtractGitHubScopeDetails(gitRepoURL string) (GitHubScopeDetails, error) {
 	if gitRepoURL == "" {
 		return GitHubScopeDetails{}, fmt.Errorf("no gitRepoURL supplied")
@@ -51,6 +58,26 @@ func ExtractGitHubScopeDetails(gitRepoURL string) (GitHubScopeDetails, error) {
 }
 
 func GetRunnerEnvs(gitHubScope GitHubScopeDetails, bootstrapParams params.BootstrapInstance) []corev1.EnvVar {
+	var extraSpecs RunnerExtraSpecs
+	if len(bootstrapParams.ExtraSpecs) > 0 {
+		_ = json.Unmarshal(bootstrapParams.ExtraSpecs, &extraSpecs)
+	}
+
+	runnerWorkDir := extraSpecs.RunnerWorkDir
+	if runnerWorkDir == "" {
+		runnerWorkDir = "/runner/_work/"
+	}
+
+	disableRunnerUpdate := "true"
+	if extraSpecs.DisableRunnerUpdate != nil {
+		disableRunnerUpdate = fmt.Sprintf("%t", *extraSpecs.DisableRunnerUpdate)
+	}
+
+	runnerEphemeral := "true"
+	if extraSpecs.RunnerEphemeral != nil {
+		runnerEphemeral = fmt.Sprintf("%t", *extraSpecs.RunnerEphemeral)
+	}
+
 	return []corev1.EnvVar{
 		{
 			Name:  "RUNNER_GITEA_INSTANCE",
@@ -74,11 +101,11 @@ func GetRunnerEnvs(gitHubScope GitHubScopeDetails, bootstrapParams params.Bootst
 		},
 		{
 			Name:  "DISABLE_RUNNER_UPDATE",
-			Value: "true",
+			Value: disableRunnerUpdate,
 		},
 		{
 			Name:  "RUNNER_WORKDIR",
-			Value: "/runner/_work/",
+			Value: runnerWorkDir,
 		},
 		{
 			Name:  "GITHUB_URL",
@@ -86,7 +113,7 @@ func GetRunnerEnvs(gitHubScope GitHubScopeDetails, bootstrapParams params.Bootst
 		},
 		{
 			Name:  "RUNNER_EPHEMERAL",
-			Value: "true",
+			Value: runnerEphemeral,
 		},
 		{
 			Name:  "RUNNER_TOKEN",