Added processing sys view path type in GRPC handlers (#19030)

Author: n00bcracker

ydb/core/grpc_services/rpc_kh_describe.cpp

@@ -228,7 +228,7 @@ class TKikhouseDescribeTableRPC : public TActorBootstrapped<TKikhouseDescribeTab
     void ResolveShards(const NActors::TActorContext& ctx) {
         auto& entry = ResolveNamesResult->ResultSet.front();
 
-        if (entry.TableId.IsSystemView()) {
+        if (entry.TableId.IsSystemView() || entry.Kind == NSchemeCache::TSchemeCacheNavigate::KindSysView) {
             // Add fake shard for sys view
             auto* p = Result.add_partitions();
             p->set_tablet_id(1);

ydb/core/grpc_services/rpc_read_columns.cpp

@@ -230,9 +230,9 @@ class TReadColumnsRPC : public TActorBootstrapped<TReadColumnsRPC> {
                                   ctx);
         }
 
-        if (ResolveNamesResult->ResultSet.front().TableId.IsSystemView()) {
+        if (entry.TableId.IsSystemView() || entry.Kind == NSchemeCache::TSchemeCacheNavigate::KindSysView) {
             return ScanSystemView(ctx);
-        } if (TryParseLocalDbPath(ResolveNamesResult->ResultSet.front().Path)) {
+        } if (TryParseLocalDbPath(entry.Path)) {
             return ScanLocalDbTable(ctx);
         } else {
             return ResolveShards(ctx);

ydb/core/grpc_services/rpc_read_rows.cpp

@@ -385,7 +385,7 @@ class TReadRowsRPC : public TActorBootstrapped<TReadRowsRPC> {
         OwnerId = entry.Self->Info.GetSchemeshardId();
         TableId = entry.Self->Info.GetPathId();
 
-        if (entry.TableId.IsSystemView()) {
+        if (entry.TableId.IsSystemView() || entry.Kind == NSchemeCache::TSchemeCacheNavigate::KindSysView) {
             return ReplyWithError(Ydb::StatusIds::SCHEME_ERROR,
                 Sprintf("Table '%s' is a system view. ReadRows is not supported.", GetTable().c_str()));
         }
@@ -592,7 +592,7 @@ class TReadRowsRPC : public TActorBootstrapped<TReadRowsRPC> {
             }
             case NScheme::NTypeIds::Decimal: {
                 return NYdb::TTypeBuilder().Decimal(NYdb::TDecimalType(
-                        typeInfo.GetDecimalType().GetPrecision(), 
+                        typeInfo.GetDecimalType().GetPrecision(),
                         typeInfo.GetDecimalType().GetScale()))
                     .Build();
             }

ydb/public/api/protos/ydb_scheme.proto

@@ -67,6 +67,7 @@ message Entry {
         VIEW = 20;
         RESOURCE_POOL = 21;
         TRANSFER = 23;
+        SYS_VIEW = 24;
     }
 
     // Name of scheme entry (dir2 of /dir1/dir2)