Search: create a separate HTTP endpoint (#55634)

* search: create a separate http endpoint

* search: extract api uri

* search: rename uri

* search: replicate the readiness check

* search: replicate the readiness check metric

* search: update mock

pkg/api/http_server.go

@@ -15,6 +15,7 @@ import (
 
 	"github.com/grafana/grafana/pkg/bus"
 	"github.com/grafana/grafana/pkg/middleware/csrf"
+	"github.com/grafana/grafana/pkg/services/searchV2"
 
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
@@ -139,6 +140,7 @@ type HTTPServer struct {
 	ThumbService                 thumbs.Service
 	ExportService                export.ExportService
 	StorageService               store.StorageService
+	SearchV2HTTPService          searchV2.SearchHTTPService
 	ContextHandler               *contexthandler.ContextHandler
 	SQLStore                     sqlstore.Store
 	AlertEngine                  *alerting.AlertEngine
@@ -237,7 +239,7 @@ func ProvideHTTPServer(opts ServerOptions, cfg *setting.Cfg, routeRegister routi
 	publicDashboardsApi *publicdashboardsApi.Api, userService user.Service, tempUserService tempUser.Service,
 	loginAttemptService loginAttempt.Service, orgService org.Service, teamService team.Service,
 	accesscontrolService accesscontrol.Service, dashboardThumbsService dashboardThumbs.Service, navTreeService navtree.Service,
-	annotationRepo annotations.Repository, tagService tag.Service,
+	annotationRepo annotations.Repository, tagService tag.Service, searchv2HTTPService searchV2.SearchHTTPService,
 ) (*HTTPServer, error) {
 	web.Env = cfg.Env
 	m := web.New()
@@ -276,6 +278,7 @@ func ProvideHTTPServer(opts ServerOptions, cfg *setting.Cfg, routeRegister routi
 		Login:                        loginService,
 		AccessControl:                accessControl,
 		DataProxy:                    dataSourceProxy,
+		SearchV2HTTPService:          searchv2HTTPService,
 		SearchService:                searchService,
 		ExportService:                exportService,
 		Live:                         live,