optimize cluster handler (#8619)

Author: adameat

ydb/core/viewer/json_handlers_viewer.cpp

@@ -203,7 +203,7 @@ void InitViewerStorageUsageJsonHandler(TJsonHandlers &handlers) {
 }
 
 void InitViewerClusterJsonHandler(TJsonHandlers& handlers) {
-    handlers.AddHandler("/viewer/cluster", new TJsonHandler<TJsonCluster>(TJsonCluster::GetSwagger()));
+    handlers.AddHandler("/viewer/cluster", new TJsonHandler<TJsonCluster>(TJsonCluster::GetSwagger()), 2);
 }
 
 void InitViewerLabeledCountersJsonHandler(TJsonHandlers &handlers) {

ydb/core/viewer/json_pipe_req.cpp

@@ -400,6 +400,11 @@ TViewerPipeClient::TRequestResponse<NSysView::TEvSysView::TEvGetPDisksResponse>
     return MakeRequestToPipe<NSysView::TEvSysView::TEvGetPDisksResponse>(pipeClient, request.release());
 }
 
+TViewerPipeClient::TRequestResponse<NSysView::TEvSysView::TEvGetStorageStatsResponse> TViewerPipeClient::RequestBSControllerStorageStats() {
+    TActorId pipeClient = ConnectTabletPipe(GetBSControllerId());
+    return MakeRequestToPipe<NSysView::TEvSysView::TEvGetStorageStatsResponse>(pipeClient, new NSysView::TEvSysView::TEvGetStorageStatsRequest());
+}
+
 void TViewerPipeClient::RequestBSControllerPDiskUpdateStatus(const NKikimrBlobStorage::TUpdateDriveStatus& driveStatus, bool force) {
     TActorId pipeClient = ConnectTabletPipe(GetBSControllerId());
     THolder<TEvBlobStorage::TEvControllerConfigRequest> request = MakeHolder<TEvBlobStorage::TEvControllerConfigRequest>();

ydb/core/viewer/json_pipe_req.h

@@ -222,6 +222,7 @@ class TViewerPipeClient : public TActorBootstrapped<TViewerPipeClient> {
     TRequestResponse<NSysView::TEvSysView::TEvGetStoragePoolsResponse> RequestBSControllerPools();
     TRequestResponse<NSysView::TEvSysView::TEvGetVSlotsResponse> RequestBSControllerVSlots();
     TRequestResponse<NSysView::TEvSysView::TEvGetPDisksResponse> RequestBSControllerPDisks();
+    TRequestResponse<NSysView::TEvSysView::TEvGetStorageStatsResponse> RequestBSControllerStorageStats();
     void RequestBSControllerPDiskUpdateStatus(const NKikimrBlobStorage::TUpdateDriveStatus& driveStatus, bool force = false);
     void RequestSchemeCacheNavigate(const TString& path);
     void RequestSchemeCacheNavigate(const TPathId& pathId);

ydb/core/viewer/protos/viewer.proto

@@ -314,8 +314,11 @@ enum EFlag {
 }
 
 message TClusterInfo {
-    string Name = 1;
-    EFlag Overall = 2;
+    uint32 Version = 1;
+    string Name = 2;
+    string Domain = 3;
+    EFlag Overall = 5;
+    repeated string Problems = 9;
     uint32 NodesTotal = 10;
     uint32 NodesAlive = 11;
     uint32 NumberOfCpus = 20;
@@ -324,13 +327,17 @@ message TClusterInfo {
     uint64 MemoryUsed = 31;
     uint64 StorageTotal = 40;
     uint64 StorageUsed = 41;
-    repeated string DataCenters = 42;
-    repeated string Versions = 43;
-    repeated NKikimrWhiteboard.TTabletStateInfo SystemTablets = 16;
-    uint64 Hosts = 44;
-    uint64 Tenants = 45;
-    uint64 Tablets = 46;
-    string Domain = 47;
+    map<string, uint64> MapStorageTotal = 42;
+    map<string, uint64> MapStorageUsed = 43;
+    repeated string DataCenters = 44;
+    map<string, uint32> MapDataCenters = 45;
+    repeated string Versions = 46;
+    map<string, uint32> MapVersions = 47;
+    map<string, uint32> MapNodeStates = 48;
+    repeated NKikimrWhiteboard.TTabletStateInfo SystemTablets = 50;
+    repeated NKikimrSysView.TStorageStatsEntry StorageStats = 51;
+    uint64 Hosts = 60;
+    uint64 Tenants = 61;
 }
 
 enum ETenantType {