Add support for merge group in image-builder

cmd/image-builder/config.go

@@ -305,6 +305,21 @@ func loadGithubActionsGitState() (GitStateConfig, error) {
 			BaseCommitRef:   gitRef,
 		}, nil
 
+	case "merge_group":
+		var payload github.MergeGroupEvent
+		err = json.Unmarshal(data, &payload)
+		if err != nil {
+			return GitStateConfig{}, fmt.Errorf("failed to parse event payload: %s", err)
+		}
+		return GitStateConfig{
+			RepositoryName:    *payload.Repo.Name,
+			RepositoryOwner:   *payload.Repo.Owner.Login,
+			JobType:           "merge_group",
+			BaseCommitSHA:     commitSHA,
+			BaseCommitRef:     gitRef,
+			PullHeadCommitSHA: *payload.MergeGroup.HeadSHA,
+		}, nil
+
 	default:
 		return GitStateConfig{}, fmt.Errorf("GITHUB_EVENT_NAME environment variable is set to unsupported value \"%s\", please set it to supported value", eventName)
 	}
@@ -343,4 +358,4 @@ func determineUsedCISystem(envGetter func(key string) string, envLookup func(key
 	}
 
 	return "", fmt.Errorf("cannot determine ci system: unknown system")
-}
+}

cmd/image-builder/main.go

@@ -215,6 +215,8 @@ func prepareADOTemplateParameters(options options) (adopipelines.OCIImageBuilder
 		templateParameters.SetWorkflowDispatchJobType()
 	case "schedule":
 		templateParameters.SetScheduleJobType()
+	case "merge_group":
+		templateParameters.SetMergeGroupJobType()
 	default:
 		return nil, fmt.Errorf("unknown JobType received, ensure image-builder runs on supported event")
 	}

pkg/azuredevops/pipelines/templatesParams.go

@@ -9,7 +9,7 @@ import (
 	"strconv"
 )
 
-var validJobTypes = []string{"presubmit", "postsubmit", "workflow_dispatch", "schedule"}
+var validJobTypes = []string{"presubmit", "postsubmit", "workflow_dispatch", "schedule", "merge_group"}
 
 func GetValidJobTypes() []string {
 	return validJobTypes
@@ -59,6 +59,11 @@ func (p OCIImageBuilderTemplateParams) SetScheduleJobType() {
 	p["JobType"] = "schedule"
 }
 
+// SetMergeGroup sets required parameter JobType to merge_group.
+func (p OCIImageBuilderTemplateParams) SetMergeGroupJobType() {
+	p["JobType"] = "schedule"
+}
+
 // SetPullNumber sets optional parameter PullNumber.
 func (p OCIImageBuilderTemplateParams) SetPullNumber(number string) {
 	p["PullNumber"] = number