Provisioning: add webhook support in API Server and Operator (#110673)

* Provisioning: add webhook support in API Server

* updating Extra interface

* adding extra with workers interface

* reverting extraWithWorkers in RegisterAPIService

* adding extra job worker provider

* adding new extra job provider

* Wire things differently

* Remove unused GetJobs

* Pass url variable as string

* Support webhooks in controller

* Fix condition

* Change the naming

---------

Co-authored-by: Roberto Jimenez Sanchez <roberto.jimenez@grafana.com>

pkg/registry/apis/provisioning/webhooks/pullrequest/render.go

@@ -106,3 +106,19 @@ func (r *screenshotRenderer) RenderScreenshot(ctx context.Context, repo provisio
 	return fmt.Sprintf("apis/%s/namespaces/%s/repositories/%s/render/%s",
 		provisioning.APIVERSION, repo.Namespace, repo.Name, rsp.Uid), nil
 }
+
+type NoOpRenderer struct{}
+
+func NewNoOpRenderer() ScreenshotRenderer {
+	return &NoOpRenderer{}
+}
+
+func (r *NoOpRenderer) IsAvailable(_ context.Context) bool {
+	return false
+}
+
+func (r *NoOpRenderer) RenderScreenshot(
+	_ context.Context, _ provisioning.ResourceRepositoryInfo, _ string, _ url.Values,
+) (string, error) {
+	return "", nil
+}

pkg/registry/apis/provisioning/webhooks/pullrequest/worker.go

@@ -12,8 +12,33 @@ import (
 	"github.com/grafana/grafana/apps/provisioning/pkg/repository"
 	"github.com/grafana/grafana/pkg/registry/apis/provisioning/jobs"
 	"github.com/grafana/grafana/pkg/registry/apis/provisioning/resources"
+	"github.com/grafana/grafana/pkg/services/apiserver"
+	"github.com/grafana/grafana/pkg/services/rendering"
+	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/storage/unified/resource"
 )
 
+func ProvidePullRequestWorker(
+	cfg *setting.Cfg,
+	renderer rendering.Service,
+	blobstore resource.ResourceClient,
+	configProvider apiserver.RestConfigProvider,
+) *PullRequestWorker {
+	urlProvider := func(_ string) string {
+		return cfg.AppURL
+	}
+
+	// FIXME: we should create providers for client and parsers, so that we don't have
+	// multiple connections for webhooks
+	clients := resources.NewClientFactory(configProvider)
+	parsers := resources.NewParserFactory(clients)
+	screenshotRenderer := NewScreenshotRenderer(renderer, blobstore)
+	evaluator := NewEvaluator(screenshotRenderer, parsers, urlProvider)
+	commenter := NewCommenter()
+
+	return NewPullRequestWorker(evaluator, commenter)
+}
+
 //go:generate mockery --name=PullRequestRepo --structname=MockPullRequestRepo --inpackage --filename=mock_pullrequest_repo.go --with-expecter
 type PullRequestRepo interface {
 	Config() *provisioning.Repository