Provisioning: Add API endpoint to reload provisioning configs (#16579)

* Add api to reaload provisioning

* Refactor and simplify the polling code

* Add test for the provisioning service

* Fix provider initialization and move some code to file reader

* Simplify the code and move initialization

* Remove unused code

* Update comment

* Add comment

* Change error messages

* Add DashboardProvisionerFactory type

* Update imports

* Use new assert lib

* Use mutext for synchronizing the reloading

* Fix typo

Co-Authored-By: aocenas <mr.ocenas@gmail.com>

* Add docs about the new api

pkg/api/admin_provisioning.go

@@ -0,0 +1,30 @@
+package api
+
+import (
+	"context"
+	"github.com/grafana/grafana/pkg/models"
+)
+
+func (server *HTTPServer) AdminProvisioningReloadDasboards(c *models.ReqContext) Response {
+	err := server.ProvisioningService.ProvisionDashboards()
+	if err != nil && err != context.Canceled {
+		return Error(500, "", err)
+	}
+	return Success("Dashboards config reloaded")
+}
+
+func (server *HTTPServer) AdminProvisioningReloadDatasources(c *models.ReqContext) Response {
+	err := server.ProvisioningService.ProvisionDatasources()
+	if err != nil {
+		return Error(500, "", err)
+	}
+	return Success("Datasources config reloaded")
+}
+
+func (server *HTTPServer) AdminProvisioningReloadNotifications(c *models.ReqContext) Response {
+	err := server.ProvisioningService.ProvisionNotifications()
+	if err != nil {
+		return Error(500, "", err)
+	}
+	return Success("Notifications config reloaded")
+}

pkg/api/api.go

@@ -387,6 +387,10 @@ func (hs *HTTPServer) registerRoutes() {
 		adminRoute.Post("/users/:id/logout", Wrap(hs.AdminLogoutUser))
 		adminRoute.Get("/users/:id/auth-tokens", Wrap(hs.AdminGetUserAuthTokens))
 		adminRoute.Post("/users/:id/revoke-auth-token", bind(m.RevokeAuthTokenCmd{}), Wrap(hs.AdminRevokeUserAuthToken))
+
+		adminRoute.Post("/provisioning/dashboards/reload", Wrap(hs.AdminProvisioningReloadDasboards))
+		adminRoute.Post("/provisioning/datasources/reload", Wrap(hs.AdminProvisioningReloadDatasources))
+		adminRoute.Post("/provisioning/notifications/reload", Wrap(hs.AdminProvisioningReloadNotifications))
 	}, reqGrafanaAdmin)
 
 	// rendering

pkg/api/http_server.go

@@ -25,6 +25,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/cache"
 	"github.com/grafana/grafana/pkg/services/datasources"
 	"github.com/grafana/grafana/pkg/services/hooks"
+	"github.com/grafana/grafana/pkg/services/provisioning"
 	"github.com/grafana/grafana/pkg/services/quota"
 	"github.com/grafana/grafana/pkg/services/rendering"
 	"github.com/grafana/grafana/pkg/setting"
@@ -48,16 +49,17 @@ type HTTPServer struct {
 	streamManager *live.StreamManager
 	httpSrv       *http.Server
 
-	RouteRegister      routing.RouteRegister    `inject:""`
-	Bus                bus.Bus                  `inject:""`
-	RenderService      rendering.Service        `inject:""`
-	Cfg                *setting.Cfg             `inject:""`
-	HooksService       *hooks.HooksService      `inject:""`
-	CacheService       *cache.CacheService      `inject:""`
-	DatasourceCache    datasources.CacheService `inject:""`
-	AuthTokenService   models.UserTokenService  `inject:""`
-	QuotaService       *quota.QuotaService      `inject:""`
-	RemoteCacheService *remotecache.RemoteCache `inject:""`
+	RouteRegister       routing.RouteRegister            `inject:""`
+	Bus                 bus.Bus                          `inject:""`
+	RenderService       rendering.Service                `inject:""`
+	Cfg                 *setting.Cfg                     `inject:""`
+	HooksService        *hooks.HooksService              `inject:""`
+	CacheService        *cache.CacheService              `inject:""`
+	DatasourceCache     datasources.CacheService         `inject:""`
+	AuthTokenService    models.UserTokenService          `inject:""`
+	QuotaService        *quota.QuotaService              `inject:""`
+	RemoteCacheService  *remotecache.RemoteCache         `inject:""`
+	ProvisioningService provisioning.ProvisioningService `inject:""`
 }
 
 func (hs *HTTPServer) Init() error {