more tkv and refact

source/dnode/mgmt/impl/src/dndEnv.c

@@ -293,7 +293,7 @@ int32_t dndInit(const SDnodeEnvCfg *pCfg) {
   if (vnodeInit(&vnodeOpt) != 0) {
     dError("failed to init vnode since %s", terrstr());
     dndCleanup();
-    return NULL;
+    return -1;
   }
 
   memcpy(&dndEnv.cfg, pCfg, sizeof(SDnodeEnvCfg));

source/dnode/vnode/inc/vnode.h

@@ -37,36 +37,18 @@ typedef int32_t (*PutReqToVQueryQFp)(SDnode *pDnode, struct SRpcMsg *pReq);
 typedef struct SVnodeCfg {
   int32_t vgId;
   SDnode *pDnode;
-
-  /** vnode buffer pool options */
   struct {
-    /** write buffer size */
     uint64_t wsize;
     uint64_t ssize;
     uint64_t lsize;
-    /** use heap allocator or arena allocator */
     bool isHeapAllocator;
   };
-
-  /** time to live of tables in this vnode */
   uint32_t ttl;
-
-  /** data to keep in this vnode */
   uint32_t keep;
-
-  /** if TS data is eventually consistency */
   bool isWeak;
-
-  /** TSDB config */
   STsdbCfg tsdbCfg;
-
-  /** META config */
   SMetaCfg metaCfg;
-
-  /** TQ config */
   STqCfg tqCfg;
-
-  /** WAL config */
   SWalCfg walCfg;
 } SVnodeCfg;
 

source/libs/tdb/inc/tdb.h

@@ -22,9 +22,15 @@
 extern "C" {
 #endif
 
+typedef enum {
+  TDB_BTREE = 0,
+  TDB_HASH,
+  TDB_HEAP,
+} tdb_db_t;
+
 // Forward declaration
-typedef struct TDB     TDB;
-typedef struct TDB_ENV TDB_ENV;
+typedef struct TDB        TDB;
+typedef struct TDB_CURSOR TDB_CURSOR;
 
 // SKey
 typedef struct {
@@ -32,6 +38,11 @@ typedef struct {
   uint32_t size;
 } TDB_KEY, TDB_VALUE;
 
+// TDB Operations
+int tdbCreateDB(TDB** dbpp);
+int tdbOpenDB(TDB* dbp, tdb_db_t type, uint32_t flags);
+int tdbCloseDB(TDB* dbp, uint32_t flags);
+
 #ifdef __cplusplus
 }
 #endif

source/libs/tdb/src/inc/tdbDB.h

@@ -23,19 +23,14 @@
 extern "C" {
 #endif
 
-typedef enum {
-  TDB_BTREE = 0,
-  TDB_HASH,
-  TDB_HEAP,
-} tdb_db_t;
 
 struct TDB {
   pgsize_t pageSize;
   tdb_db_t type;
   union {
-    STkvBtree btree;
-    STkvhash  hash;
-  } dbimpl;
+    TDB_BTREE btree;
+    TDB_HASH  hash;
+  } dbam;  // Different access methods
 };
 
 #ifdef __cplusplus

source/libs/tdb/src/inc/tdbEnv.h

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _TD_TDB_ENV_H_
-#define _TD_TDB_ENV_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct TDB_ENV {
-  char *homeDir;
-};
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /*_TD_TDB_ENV_H_*/
\ No newline at end of file

source/libs/tdb/test/tDiskMgrTest.cpp

-#include "gtest/gtest.h"
-
-#include "iostream"
-
-#include "tDiskMgr.h"
-
-TEST(tDiskMgrTest, simple_test) {
-  // TODO
-  std::cout << "This is in tDiskMgrTest::simple_test" << std::endl;
-}
\ No newline at end of file

source/libs/tdb/test/tdbTest.cpp

+#include "gtest/gtest.h"
+
+TEST(tdb_api_test, tdb_create_open_close_db_test) {
+
+}
\ No newline at end of file