refact

source/dnode/vnode/meta/inc/metaCache.h

@@ -16,12 +16,16 @@
 #ifndef _TD_META_CACHE_H_
 #define _TD_META_CACHE_H_
 
+#include "rocksdb/c.h"
+
 #include "meta.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef rocksdb_cache_t meta_cache_t;
+
 int  metaOpenCache(SMeta *pMeta);
 void metaCloseCache(SMeta *pMeta);
 

source/dnode/vnode/meta/inc/metaDB.h

@@ -16,12 +16,16 @@
 #ifndef _TD_META_DB_H_
 #define _TD_META_DB_H_
 
+#include "rocksdb/c.h"
+
 #include "meta.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef rocksdb_t meta_db_t;
+
 int  metaOpenDB(SMeta *pMeta);
 void metaCloseDB(SMeta *pMeta);
 

source/dnode/vnode/meta/inc/metaDef.h

@@ -16,8 +16,9 @@
 #ifndef _TD_META_DEF_H_
 #define _TD_META_DEF_H_
 
-#include "rocksdb/c.h"
-
+#include "metaCache.h"
+#include "metaDB.h"
+#include "metaIdx.h"
 #include "metaTbUid.h"
 
 #ifdef __cplusplus
@@ -25,11 +26,11 @@ extern "C" {
 #endif
 
 struct SMeta {
-  char *           path;     // path of current meta
+  char*           path;     // path of current meta
   SMetaOptions    options;  // meta option
-  rocksdb_t *      pDB;
-  rocksdb_t *      pIdx;
-  rocksdb_cache_t *pCache;
+  meta_db_t*      pDB;      // raw data db
+  meta_index_t*   pIdx;     // tag index
+  meta_cache_t*   pCache;   // LRU cache
   STbUidGenerator uidGnrt;  // meta table UID generator
 };
 

source/dnode/vnode/meta/inc/metaIdx.h

@@ -16,12 +16,16 @@
 #ifndef _TD_META_IDX_H_
 #define _TD_META_IDX_H_
 
+#include "rocksdb/c.h"
+
 #include "meta.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef rocksdb_t meta_index_t;
+
 int  metaOpenIdx(SMeta *pMeta);
 void metaCloseIdx(SMeta *pMeta);