feat: Add investigations app backend (#98084)

* add initial structure for investigations app backedn

* update version

* Fix codegen & paths

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Fix Go workspace and CODEOWNERS

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* update kinds for investigation

* update dockerfile

* update codeowners

* update dependabot

* update golangci

* add investigation app and watcher

* run make update-workspace

* run make update-workspace

* register investigation app

* add investigation app to wireset

* add investigations app provider to api initializer

* fix imports

* update feature toggle

* fix cue definition and api initializer

* clean up removing unecessary components

* remove watcher feature toggle

* add investigations backend behind feature toggle

* revert change

---------

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>
Co-authored-by: Igor Suleymanov <igor.suleymanov@grafana.com>

pkg/registry/apps/apps.go

@@ -5,10 +5,12 @@ import (
 
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/registry"
+	"github.com/grafana/grafana/pkg/registry/apps/investigation"
 	"github.com/grafana/grafana/pkg/registry/apps/playlist"
 	"github.com/grafana/grafana/pkg/services/apiserver"
 	"github.com/grafana/grafana/pkg/services/apiserver/builder"
 	"github.com/grafana/grafana/pkg/services/apiserver/builder/runner"
+	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"k8s.io/client-go/rest"
 )
 
@@ -25,7 +27,9 @@ type Service struct {
 func ProvideRegistryServiceSink(
 	registrar builder.APIRegistrar,
 	restConfigProvider apiserver.RestConfigProvider,
+	features featuremgmt.FeatureToggles,
 	playlistAppProvider *playlist.PlaylistAppProvider,
+	investigationAppProvider *investigation.InvestigationAppProvider,
 ) (*Service, error) {
 	cfgWrapper := func(ctx context.Context) *rest.Config {
 		cfg := restConfigProvider.GetRestConfig(ctx)
@@ -40,11 +44,19 @@ func ProvideRegistryServiceSink(
 		RestConfigGetter: cfgWrapper,
 		APIRegistrar:     registrar,
 	}
-	runner, err := runner.NewAPIGroupRunner(cfg, playlistAppProvider)
+
+	var apiGroupRunner *runner.APIGroupRunner
+	var err error
+	if features.IsEnabledGlobally(featuremgmt.FlagInvestigationsBackend) {
+		apiGroupRunner, err = runner.NewAPIGroupRunner(cfg, playlistAppProvider, investigationAppProvider)
+	} else {
+		apiGroupRunner, err = runner.NewAPIGroupRunner(cfg, playlistAppProvider)
+	}
+
 	if err != nil {
 		return nil, err
 	}
-	return &Service{runner: runner, log: log.New("app-registry")}, nil
+	return &Service{runner: apiGroupRunner, log: log.New("app-registry")}, nil
 }
 
 func (s *Service) Run(ctx context.Context) error {

pkg/registry/apps/investigation/register.go

@@ -0,0 +1,30 @@
+package investigation
+
+import (
+	"github.com/grafana/grafana-app-sdk/app"
+	"github.com/grafana/grafana-app-sdk/simple"
+	"github.com/grafana/grafana/apps/investigation/pkg/apis"
+	investigationv1alpha1 "github.com/grafana/grafana/apps/investigation/pkg/apis/investigation/v1alpha1"
+	investigationapp "github.com/grafana/grafana/apps/investigation/pkg/app"
+	"github.com/grafana/grafana/pkg/services/apiserver/builder/runner"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+type InvestigationAppProvider struct {
+	app.Provider
+	cfg *setting.Cfg
+}
+
+func RegisterApp(
+	cfg *setting.Cfg,
+) *InvestigationAppProvider {
+	provider := &InvestigationAppProvider{
+		cfg: cfg,
+	}
+	appCfg := &runner.AppBuilderConfig{
+		OpenAPIDefGetter: investigationv1alpha1.GetOpenAPIDefinitions,
+		ManagedKinds:     investigationapp.GetKinds(),
+	}
+	provider.Provider = simple.NewAppProvider(apis.LocalManifest(), appCfg, investigationapp.New)
+	return provider
+}

pkg/registry/apps/wireset.go

@@ -3,10 +3,12 @@ package appregistry
 import (
 	"github.com/google/wire"
 
+	"github.com/grafana/grafana/pkg/registry/apps/investigation"
 	"github.com/grafana/grafana/pkg/registry/apps/playlist"
 )
 
 var WireSet = wire.NewSet(
 	ProvideRegistryServiceSink,
 	playlist.RegisterApp,
+	investigation.RegisterApp,
 )

pkg/services/featuremgmt/registry.go

@@ -1696,6 +1696,13 @@ var (
 			Owner:       grafanaObservabilityLogsSquad,
 			Expression:  "true",
 		},
+		{
+			Name:        "investigationsBackend",
+			Description: "Enable the investigations backend API",
+			Stage:       FeatureStageExperimental,
+			Owner:       grafanaAppPlatformSquad,
+			Expression:  "false",
+		},
 	}
 )
 

pkg/services/featuremgmt/toggles_gen.csv

@@ -226,3 +226,4 @@ feedbackButton,experimental,@grafana/grafana-operator-experience-squad,false,fal
 elasticsearchCrossClusterSearch,preview,@grafana/aws-datasources,false,false,false
 unifiedHistory,experimental,@grafana/grafana-frontend-platform,false,false,true
 lokiLabelNamesQueryApi,GA,@grafana/observability-logs,false,false,false
+investigationsBackend,experimental,@grafana/grafana-app-platform-squad,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -914,4 +914,8 @@ const (
 	// FlagLokiLabelNamesQueryApi
 	// Defaults to using the Loki `/labels` API instead of `/series`
 	FlagLokiLabelNamesQueryApi = "lokiLabelNamesQueryApi"
+
+	// FlagInvestigationsBackend
+	// Enable the investigations backend API
+	FlagInvestigationsBackend = "investigationsBackend"
 )

pkg/services/featuremgmt/toggles_gen.json

@@ -1832,6 +1832,33 @@
         "codeowner": "@grafana/observability-metrics"
       }
     },
+    {
+      "metadata": {
+        "name": "investigationsBackend",
+        "resourceVersion": "1734447689720",
+        "creationTimestamp": "2024-12-17T15:01:29Z"
+      },
+      "spec": {
+        "description": "Enable the investigations backend API",
+        "stage": "experimental",
+        "codeowner": "@grafana/grafana-app-platform-squad",
+        "expression": "false"
+      }
+    },
+    {
+      "metadata": {
+        "name": "investigationsWatcher",
+        "resourceVersion": "1734443690044",
+        "creationTimestamp": "2024-12-17T13:54:50Z",
+        "deletionTimestamp": "2024-12-17T14:54:34Z"
+      },
+      "spec": {
+        "description": "Enables experimental watcher for investigations",
+        "stage": "experimental",
+        "codeowner": "@grafana/grafana-app-platform-squad",
+        "requiresRestart": true
+      }
+    },
     {
       "metadata": {
         "name": "jaegerBackendMigration",

pkg/services/store/testdata/public_testdata.golden.jsonc

@@ -21,8 +21,8 @@
 //  | example-with-style.geojson | application/geo+json | 3332          |
 //  | usa-states.geojson         | application/geo+json | 89263         |
 //  +----------------------------+----------------------+---------------+
-//  
-//  
+//
+//
 //  🌟 This was machine generated.  Do not edit. 🌟
 {
   "status": 200,
@@ -87,4 +87,5 @@
       }
     }
   ]
-}
+}
+