sdb version

include/os/osDef.h

@@ -178,6 +178,12 @@ extern "C" {
   #define setThreadName(name)
 #endif
 
+#if defined(_WIN32)
+#define TD_DIRSEP	"\\"
+#else
+#define TD_DIRSEP	"/"
+#endif
+
 #ifdef __cplusplus
 }
 #endif

include/server/mnode/mnode.h

@@ -20,6 +20,8 @@
 extern "C" {
 #endif
 
+typedef enum { MN_STATUS_UNINIT = 0, MN_STATUS_INIT = 1, MN_STATUS_READY = 2, MN_STATUS_CLOSING = 3 } EMnStatus;
+
 typedef struct {
   /**
    * Send messages to other dnodes, such as create vnode message.
@@ -44,23 +46,12 @@ typedef struct {
    */
   void (*SendRedirectMsg)(struct SRpcMsg *rpcMsg, bool forShell);
 
-  /**
-   * Get the corresponding endpoint information from dnodeId.
-   *
-   * @param dnode, the instance of dDnode module.
-   * @param dnodeId, the id ot dnode.
-   * @param ep, the endpoint of dnode.
-   * @param fqdn, the fqdn of dnode.
-   * @param port, the port of dnode.
-   */
-  void (*GetDnodeEp)(int32_t dnodeId, char *ep, char *fqdn, uint16_t *port);
-
 } SMnodeFp;
 
 typedef struct {
-  SMnodeFp      fp;
-  char          clusterId[TSDB_CLUSTER_ID_LEN];
-  int32_t       dnodeId;
+  SMnodeFp fp;
+  char     clusterId[TSDB_CLUSTER_ID_LEN];
+  int32_t  dnodeId;
 } SMnodePara;
 
 /**
@@ -93,7 +84,7 @@ void mnodeUnDeploy();
  *
  * @return Server status.
  */
-bool mnodeIsServing();
+EMnStatus mnodeIsServing();
 
 typedef struct {
   int64_t numOfDnode;

source/server/dnode/src/dnodeInt.c

@@ -46,7 +46,6 @@ static int32_t dnodeInitVnodeModule(void **unused) {
 
 static int32_t dnodeInitMnodeModule(void **unused) {
   SMnodePara para;
-  para.fp.GetDnodeEp = dnodeGetDnodeEp;
   para.fp.SendMsgToDnode = dnodeSendMsgToDnode;
   para.fp.SendMsgToMnode = dnodeSendMsgToMnode;
   para.fp.SendRedirectMsg = dnodeSendRedirectMsg;

source/server/mnode/CMakeLists.txt

@@ -8,4 +8,5 @@ target_include_directories(
 target_link_libraries(
     mnode
     PUBLIC transport
+    PUBLIC cjson
 )
\ No newline at end of file

source/server/mnode/inc/mnodeDef.h

@@ -20,6 +20,7 @@
 #include "tlog.h"
 #include "trpc.h"
 #include "ttimer.h"
+#include "cJSON.h"
 #include "mnode.h"
 
 #ifdef __cplusplus
@@ -94,15 +95,15 @@ typedef enum {
   MN_AUTH_MAX
 } EMnAuthOp;
 
-typedef enum {
-  MN_STATUS_UNINIT = 0,
-  MN_STATUS_INIT = 1,
-  MN_STATUS_READY = 2,
-  MN_STATUS_CLOSING = 3
-} EMnStatus;
-
+typedef enum { MN_SDB_STAT_AVAIL = 0, MN_SDB_STAT_DROPPED = 1 } EMnSdbStat;
 
+typedef struct {
+  int8_t type;
+  int8_t status;
+  int8_t align[6];
+} SdbHead;
 typedef struct SClusterObj {
+  SdbHead head;
   int64_t id;
   char    uid[TSDB_CLUSTER_ID_LEN];
   int64_t createdTime;
@@ -110,6 +111,7 @@ typedef struct SClusterObj {
 } SClusterObj;
 
 typedef struct SDnodeObj {
+  SdbHead  head;
   int32_t  id;
   int32_t  vnodes;
   int64_t  createdTime;
@@ -126,6 +128,7 @@ typedef struct SDnodeObj {
 } SDnodeObj;
 
 typedef struct SMnodeObj {
+  SdbHead    head;
   int32_t    id;
   int8_t     status;
   int8_t     role;
@@ -169,6 +172,7 @@ typedef struct {
 } SAcctInfo;
 
 typedef struct SAcctObj {
+  SdbHead   head;
   char      acct[TSDB_USER_LEN];
   int64_t   createdTime;
   int64_t   updateTime;
@@ -179,6 +183,7 @@ typedef struct SAcctObj {
 } SAcctObj;
 
 typedef struct SUserObj {
+  SdbHead   head;
   char      user[TSDB_USER_LEN];
   char      pass[TSDB_KEY_LEN];
   char      acct[TSDB_USER_LEN];
@@ -212,6 +217,7 @@ typedef struct {
 } SDbCfg;
 
 typedef struct SDbObj {
+  SdbHead   head;
   char      name[TSDB_ACCT_ID_LEN + TSDB_DB_NAME_LEN];
   char      acct[TSDB_USER_LEN];
   int64_t   createdTime;
@@ -255,6 +261,7 @@ typedef struct SVgObj {
 } SVgObj;
 
 typedef struct SSTableObj {
+  SdbHead    head;
   char       tableId[TSDB_TABLE_NAME_LEN];
   uint64_t   uid;
   int64_t    createdTime;
@@ -265,6 +272,7 @@ typedef struct SSTableObj {
 } SSTableObj;
 
 typedef struct SFuncObj {
+  SdbHead head;
   char    name[TSDB_FUNC_NAME_LEN];
   char    path[128];
   int32_t contLen;

source/server/mnode/inc/mnodeInt.h

@@ -22,10 +22,10 @@
 extern "C" {
 #endif
 
-tmr_h   mnodeGetTimer();
-int32_t mnodeGetDnodeId();
-char   *mnodeGetClusterId();
-bool    mnodeIsRunning();
+tmr_h     mnodeGetTimer();
+int32_t   mnodeGetDnodeId();
+char     *mnodeGetClusterId();
+EMnStatus mnodeIsServing();
 
 void mnodeSendMsgToDnode(struct SRpcEpSet *epSet, struct SRpcMsg *rpcMsg);
 void mnodeSendMsgToMnode(struct SRpcMsg *rpcMsg);

source/server/mnode/inc/mnodeSdb.h

@@ -22,14 +22,28 @@
 extern "C" {
 #endif
 
-int32_t mnodeInitSdb();
-void    mnodeCleanupSdb();
+typedef void (*SdbDeployFp)();
+typedef void *(*SdbDecodeFp)(cJSON *root);
+typedef int32_t (*SdbEncodeFp)(void *pHead, char *buf, int32_t maxLen);
 
-int32_t mnodeDeploySdb();
-void    mnodeUnDeploySdb();
+int32_t sdbInit();
+void    sdbCleanup();
 
-int32_t mnodeReadSdb();
-int32_t mnodeCommitSdb();
+int32_t sdbRead();
+int32_t sdbCommit();
+
+int32_t sdbDeploy();
+void    sdbUnDeploy();
+
+void   *sdbInsertRow(EMnSdb sdb, void *pObj);
+void    sdbDeleteRow(EMnSdb sdb, void *pHead);
+void   *sdbUpdateRow(EMnSdb sdb, void *pHead);
+void   *sdbGetRow(EMnSdb sdb, void *pKey);
+void   *sdbFetchRow(EMnSdb sdb, void *pIter);
+void    sdbCancelFetch(EMnSdb sdb, void *pIter);
+int32_t sdbGetCount(EMnSdb sdb);
+
+void sdbSetFp(EMnSdb, EMnKey, SdbDeployFp, SdbEncodeFp, SdbDecodeFp, int32_t dataSize);
 
 #ifdef __cplusplus
 }

source/server/mnode/src/mnodeAcct.c

@@ -15,7 +15,62 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-#include "mnodeInt.h"
+#include "mnodeSdb.h"
 
-int32_t mnodeInitAcct() { return 0; }
-void    mnodeCleanupAcct() {}
+static void mnodeCreateDefaultAcct() {
+  int32_t    code = TSDB_CODE_SUCCESS;
+
+  SAcctObj acctObj = {0};
+  tstrncpy(acctObj.acct, TSDB_DEFAULT_USER, TSDB_USER_LEN);
+  acctObj.cfg = (SAcctCfg){.maxUsers = 128,
+                           .maxDbs = 128,
+                           .maxTimeSeries = INT32_MAX,
+                           .maxConnections = 1024,
+                           .maxStreams = 1000,
+                           .maxPointsPerSecond = 10000000,
+                           .maxStorage = INT64_MAX,
+                           .maxQueryTime = INT64_MAX,
+                           .maxInbound = 0,
+                           .maxOutbound = 0,
+                           .accessState = TSDB_VN_ALL_ACCCESS};
+  acctObj.acctId = 1;
+  acctObj.createdTime = taosGetTimestampMs();
+
+  sdbInsertRow(MN_SDB_ACCT, &acctObj);
+}
+
+int32_t mnodeEncodeAcct(SAcctObj *pAcct, char *buf, int32_t maxLen) {
+  int32_t len = 0;
+
+  len += snprintf(buf + len, maxLen - len, "{\"type\":%d, ", MN_SDB_ACCT);
+  len += snprintf(buf + len, maxLen - len, "\"acctId\":\"%d\", ", pAcct->acctId);
+  len += snprintf(buf + len, maxLen - len, "\"maxUsers\":\"%d\", ", pAcct->cfg.maxUsers);
+  len += snprintf(buf + len, maxLen - len, "\"maxDbs\":\"%d\", ", pAcct->cfg.maxDbs);
+  len += snprintf(buf + len, maxLen - len, "\"maxTimeSeries\":\"%d\", ", pAcct->cfg.maxTimeSeries);
+  len += snprintf(buf + len, maxLen - len, "\"maxConnections\":\"%d\", ", pAcct->cfg.maxConnections);
+  len += snprintf(buf + len, maxLen - len, "\"maxStreams\":\"%d\", ", pAcct->cfg.maxStreams);
+  len += snprintf(buf + len, maxLen - len, "\"maxPointsPerSecond\":\"%d\", ", pAcct->cfg.maxPointsPerSecond);
+  len += snprintf(buf + len, maxLen - len, "\"maxUsers\":\"%" PRIu64 "\", ", pAcct->cfg.maxStorage);
+  len += snprintf(buf + len, maxLen - len, "\"maxQueryTime\":\"%" PRIu64 "\", ", pAcct->cfg.maxQueryTime);
+  len += snprintf(buf + len, maxLen - len, "\"maxInbound\"\":%" PRIu64 "\", ", pAcct->cfg.maxInbound);
+  len += snprintf(buf + len, maxLen - len, "\"maxOutbound\":\"%" PRIu64 "\", ", pAcct->cfg.maxOutbound);
+  len += snprintf(buf + len, maxLen - len, "\"accessState\":\"%d\", ", pAcct->cfg.accessState);
+  len += snprintf(buf + len, maxLen - len, "\"createdTime\":\"%" PRIu64 "\", ", pAcct->createdTime);
+  len += snprintf(buf + len, maxLen - len, "\"updateTime\":\"%" PRIu64 "\"}\n", pAcct->updateTime);
+
+  return len;
+}
+
+SAcctObj *mnodeDecodeAcct(cJSON *root) {
+  SAcctObj *pAcct = calloc(1, sizeof(SAcctObj));
+  return pAcct;
+}
+
+int32_t mnodeInitAcct() {
+  sdbSetFp(MN_SDB_ACCT, MN_KEY_BINARY, mnodeCreateDefaultAcct, (SdbEncodeFp)mnodeEncodeAcct,
+           (SdbDecodeFp)(mnodeDecodeAcct), sizeof(SAcctObj));
+
+  return 0;
+}
+
+void mnodeCleanupAcct() {}

source/server/mnode/src/mnodeSdb.c

@@ -15,14 +15,222 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-#include "mnodeInt.h"
+#include "thash.h"
+#include "tglobal.h"
+#include "cJSON.h"
+#include "mnodeSdb.h"
 
-int32_t mnodeInitSdb() { return 0; }
-void    mnodeCleanupSdb() {}
+static struct {
+  char        currDir[PATH_MAX];
+  char        backDir[PATH_MAX];
+  char        tmpDir[PATH_MAX];
+  int64_t     version;
+  EMnKey      hashKey[MN_SDB_MAX];
+  int32_t     dataSize[MN_SDB_MAX];
+  SHashObj   *hashObj[MN_SDB_MAX];
+  SdbDeployFp deployFp[MN_SDB_MAX];
+  SdbEncodeFp encodeFp[MN_SDB_MAX];
+  SdbDecodeFp decodeFp[MN_SDB_MAX];
+} tsSdb = {0};
 
-int32_t mnodeDeploySdb() {
+static int32_t sdbCreateDir() {
+  if (!taosMkDir(tsSdb.currDir)) {
+    mError("failed to create dir:%s", tsSdb.currDir);
+    return TAOS_SYSTEM_ERROR(errno);
+  }
 
-    // if (!taosMkDir())
+  if (!taosMkDir(tsSdb.backDir)) {
+    mError("failed to create dir:%s", tsSdb.backDir);
+    return -1;
+  }
+
+  if (!taosMkDir(tsSdb.tmpDir)) {
+    mError("failed to create dir:%s", tsSdb.tmpDir);
+    return -1;
+  }
+
+  return 0;
+}
+
+static int32_t sdbRunDeployFp() {
+  for (int32_t i = MN_SDB_START; i < MN_SDB_MAX; ++i) {
+    SdbDeployFp fp = tsSdb.deployFp[i];
+    if (fp) {
+      (*fp)();
+    }
+  }
+
+  return 0;
+}
+
+static int32_t sdbReadVersion(cJSON *root) {
+  cJSON *ver = cJSON_GetObjectItem(root, "version");
+  if (!ver || ver->type != cJSON_String) {
+    mError("failed to parse version since version not found");
+    return -1;
+  }
+
+  tsSdb.version = (int64_t)atoll(ver->valuestring);
+  mTrace("parse version success, version:%" PRIu64, tsSdb.version);
+
+  return 0;
+}
+
+static void sdbWriteVersion(FileFd fd) {
+  char    content[128];
+  int32_t len =
+      snprintf(content, sizeof(content), "{\"type\":0, \"version\":\"%" PRIu64 "\", \"updateTime\":\"%" PRIu64 "\"}\n",
+               tsSdb.version, taosGetTimestampMs());
+  taosWriteFile(fd, content, len);
+}
+
+static int32_t sdbReadDataFile() {
+  ssize_t _bytes = 0;
+  size_t  len = 4096;
+  char   *line = calloc(1, len);
+  int32_t code = -1;
+  FILE   *fp = NULL;
+  cJSON  *root = NULL;
+
+  char file[PATH_MAX + 20];
+  snprintf(file, sizeof(file), "%ssdb.data", tsSdb.currDir);
+  fp = fopen(file, "r");
+  if (!fp) {
+    mError("failed to open file:%s for read since %s", file, strerror(errno));
+    goto PARSE_SDB_DATA_ERROR;
+  }
+
+  while (!feof(fp)) {
+    memset(line, 0, len);
+    _bytes = tgetline(&line, &len, fp);
+    if (_bytes < 0) {
+      break;
+    }
+
+    line[len - 1] = 0;
+    if (len <= 10) continue;
+
+    root = cJSON_Parse(line);
+    if (root == NULL) {
+      mError("failed to parse since invalid json format, %s", line);
+      goto PARSE_SDB_DATA_ERROR;
+    }
+
+    cJSON *type = cJSON_GetObjectItem(root, "type");
+    if (!type || type->type != cJSON_Number) {
+      mError("failed to parse since invalid type not found, %s", line);
+      goto PARSE_SDB_DATA_ERROR;
+    }
+
+    if (type->valueint >= MN_SDB_MAX || type->valueint < MN_SDB_START) {
+      mError("failed to parse since invalid type, %s", line);
+      goto PARSE_SDB_DATA_ERROR;
+    }
+
+    if (type->valueint == MN_SDB_START) {
+      if (sdbReadVersion(root) != 0) {
+        mError("failed to parse version, %s", line);
+        goto PARSE_SDB_DATA_ERROR;
+      }
+      cJSON_Delete(root);
+      root = NULL;
+      continue;
+    }
+
+    SdbDecodeFp func = tsSdb.decodeFp[type->valueint];
+    SdbHead    *pHead = (*func)(root);
+    if (pHead == NULL) {
+      mError("failed to parse since decode error, %s", line);
+      goto PARSE_SDB_DATA_ERROR;
+    }
+
+    sdbInsertRow(pHead->type, pHead);
+    cJSON_Delete(root);
+    root = NULL;
+  }
+
+  code = 0;
+
+PARSE_SDB_DATA_ERROR:
+  tfree(line);
+  fclose(fp);
+  cJSON_Delete(root);
+
+  return code;
+}
+
+static int32_t sdbWriteDataFile() {
+  char file[PATH_MAX + 20] = {0};
+  snprintf(file, sizeof(file), "%ssdb.data", tsSdb.currDir);
+  FileFd fd = taosOpenFileCreateWrite(file);
+  if (fd <= 0) {
+    mError("failed to open file:%s for write since %s", file, strerror(errno));
+    return -1;
+  }
+
+  int32_t len;
+  int32_t maxLen = 10240;
+  char   *buf = malloc(maxLen);
+
+  for (int32_t i = MN_SDB_START; i < MN_SDB_MAX; ++i) {
+    SHashObj *hash = tsSdb.hashObj[i];
+    if (!hash) continue;
+
+    SdbEncodeFp fp = tsSdb.encodeFp[i];
+    if (!fp) continue;
+
+    SdbHead *pHead = taosHashIterate(hash, NULL);
+    while (pHead != NULL) {
+      len = (*fp)(pHead, buf, maxLen);
+      if (len >= 0) {
+        taosWriteFile(fd, buf, len);
+      }
+
+      pHead = taosHashIterate(hash, pHead);
+    }
+  }
+
+  sdbWriteVersion(fd);
+  taosFsyncFile(fd);
+  taosCloseFile(fd);
+
+  mInfo("write file:%s successfully", file);
+  return 0;
+}
+
+int32_t sdbCommit() {
+  int32_t code = sdbWriteDataFile();
+  if (code != 0) {
+    return code;
+  }
+
+  return 0;
+}
+
+int32_t sdbRead() {
+  int32_t code = sdbReadDataFile();
+  if (code != 0) {
+    return code;
+  }
+
+  mInfo("read sdb file successfully");
+  return -1;
+}
+
+int32_t sdbDeploy() {
+  if (sdbCreateDir() != 0) {
+    return -1;
+  }
+
+  if (sdbRunDeployFp() != 0) {
+    return -1;
+  }
+
+  if (sdbCommit() != 0) {
+    return -1;
+  }
+
+  // if (!taosMkDir())
   // if (pMinfos == NULL) {  // first deploy
   //   tsMint.dnodeId = 1;
   //   bool getuid = taosGetSystemUid(tsMint.clusterId);
@@ -42,6 +250,142 @@ int32_t mnodeDeploySdb() {
   return 0;
 }
 
-void    mnodeUnDeploySdb() {}
-int32_t mnodeReadSdb() { return 0; }
-int32_t mnodeCommitSdb() { return 0; }
\ No newline at end of file
+void sdbUnDeploy() {}
+
+int32_t sdbInit() {
+  snprintf(tsSdb.currDir, PATH_MAX, "%s%scurrent%s", tsMnodeDir, TD_DIRSEP, TD_DIRSEP);
+  snprintf(tsSdb.backDir, PATH_MAX, "%s%sbackup%s", tsMnodeDir, TD_DIRSEP, TD_DIRSEP);
+  snprintf(tsSdb.tmpDir, PATH_MAX, "%s%stmp%s", tsMnodeDir, TD_DIRSEP, TD_DIRSEP);
+
+  for (int32_t i = 0; i < MN_SDB_MAX; ++i) {
+    int32_t type;
+    if (tsSdb.hashKey[i] == MN_KEY_INT32) {
+      type = TSDB_DATA_TYPE_INT;
+    } else if (tsSdb.hashKey[i] == MN_KEY_INT64) {
+      type = TSDB_DATA_TYPE_BIGINT;
+    } else {
+      type = TSDB_DATA_TYPE_BINARY;
+    }
+
+    SHashObj *hash = taosHashInit(128, taosGetDefaultHashFunction(type), true, HASH_NO_LOCK);
+    if (hash == NULL) {
+      return -1;
+    }
+
+    tsSdb.hashObj[i] = hash;
+  }
+
+  return 0;
+}
+
+void sdbCleanup() {
+  for (int32_t i = 0; i < MN_SDB_MAX; ++i) {
+    SHashObj *hash = tsSdb.hashObj[i];
+    if (hash != NULL) {
+      taosHashCleanup(hash);
+    }
+    tsSdb.hashObj[i] = NULL;
+  }
+}
+
+void sdbSetFp(EMnSdb sdb, EMnKey keyType, SdbDeployFp deployFp, SdbEncodeFp encodeFp, SdbDecodeFp decodeFp,
+              int32_t dataSize) {
+  tsSdb.deployFp[sdb] = deployFp;
+  tsSdb.encodeFp[sdb] = encodeFp;
+  tsSdb.decodeFp[sdb] = decodeFp;
+  tsSdb.dataSize[sdb] = dataSize;
+  tsSdb.hashKey[sdb] = keyType;
+}
+
+static SHashObj *sdbGetHash(int32_t sdb) {
+  if (sdb >= MN_SDB_MAX || sdb <= MN_SDB_START) {
+    return NULL;
+  }
+
+  SHashObj *hash = tsSdb.hashObj[sdb];
+  if (hash == NULL) {
+    return NULL;
+  }
+
+  return hash;
+}
+
+void *sdbInsertRow(EMnSdb sdb, void *p) {
+  SdbHead *pHead = p;
+  pHead->type = sdb;
+  pHead->status = MN_SDB_STAT_AVAIL;
+
+  char   *pKey = (char *)pHead + sizeof(pHead);
+  int32_t keySize;
+  EMnKey  keyType = tsSdb.hashKey[pHead->type];
+  int32_t dataSize = tsSdb.dataSize[pHead->type];
+
+  SHashObj *hash = sdbGetHash(pHead->type);
+  if (hash == NULL) {
+    return NULL;
+  }
+
+  if (keyType == MN_KEY_INT32) {
+    keySize = sizeof(int32_t);
+  } else if (keyType == MN_KEY_BINARY) {
+    keySize = strlen(pKey) + 1;
+  } else {
+    keySize = sizeof(int64_t);
+  }
+
+  taosHashPut(hash, pKey, keySize, pHead, dataSize);
+  return taosHashGet(hash, pKey, keySize);
+}
+
+void sdbDeleteRow(EMnSdb sdb, void *p) {
+  SdbHead *pHead = p;
+  pHead->status = MN_SDB_STAT_DROPPED;
+}
+
+void *sdbUpdateRow(EMnSdb sdb, void *pHead) { return sdbInsertRow(sdb, pHead); }
+
+void *sdbGetRow(EMnSdb sdb, void *pKey) {
+  SHashObj *hash = sdbGetHash(sdb);
+  if (hash == NULL) {
+    return NULL;
+  }
+
+  int32_t keySize;
+  EMnKey  keyType = tsSdb.hashKey[sdb];
+
+  if (keyType == MN_KEY_INT32) {
+    keySize = sizeof(int32_t);
+  } else if (keyType == MN_KEY_BINARY) {
+    keySize = strlen(pKey) + 1;
+  } else {
+    keySize = sizeof(int64_t);
+  }
+
+  return taosHashGet(hash, pKey, keySize);
+}
+
+void *sdbFetchRow(EMnSdb sdb, void *pIter) {
+  SHashObj *hash = sdbGetHash(sdb);
+  if (hash == NULL) {
+    return NULL;
+  }
+
+  return taosHashIterate(hash, pIter);
+}
+
+void sdbCancelFetch(EMnSdb sdb, void *pIter) {
+  SHashObj *hash = sdbGetHash(sdb);
+  if (hash == NULL) {
+    return;
+  }
+
+  taosHashCancelIterate(hash, pIter);
+}
+
+int32_t sdbGetCount(EMnSdb sdb) {
+  SHashObj *hash = sdbGetHash(sdb);
+  if (hash == NULL) {
+    return 0;
+  }
+  return taosHashGetSize(hash);
+}
\ No newline at end of file

source/server/mnode/src/mondeInt.c

@@ -51,7 +51,7 @@ int32_t mnodeGetDnodeId() { return tsMint.dnodeId; }
 
 char *mnodeGetClusterId() { return tsMint.clusterId; }
 
-bool mnodeIsServing() { return tsMint.state == MN_STATUS_READY; }
+EMnStatus mnodeIsServing() { return tsMint.state; }
 
 void mnodeSendMsgToDnode(struct SRpcEpSet *epSet, struct SRpcMsg *rpcMsg) {
   (*tsMint.fp.SendMsgToDnode)(epSet, rpcMsg);
@@ -68,7 +68,6 @@ static int32_t mnodeSetPara(SMnodePara para) {
   tsMint.dnodeId = para.dnodeId;
   strncpy(tsMint.clusterId, para.clusterId, TSDB_CLUSTER_ID_LEN);
 
-  if (tsMint.fp.GetDnodeEp == NULL) return -1;
   if (tsMint.fp.SendMsgToDnode == NULL) return -1;
   if (tsMint.fp.SendMsgToMnode == NULL) return -1;
   if (tsMint.fp.SendRedirectMsg == NULL) return -1;
@@ -96,7 +95,7 @@ static int32_t mnodeInitStep1() {
   struct SSteps *steps = taosStepInit(16, NULL);
   if (steps == NULL) return -1;
 
-  taosStepAdd(steps, "mnode-sdb", mnodeInitSdb, mnodeCleanupSdb);
+  taosStepAdd(steps, "mnode-sdb", sdbInit, sdbCleanup);
   taosStepAdd(steps, "mnode-cluster", mnodeInitCluster, mnodeCleanupCluster);
   taosStepAdd(steps, "mnode-dnode", mnodeInitDnode, mnodeCleanupDnode);
   taosStepAdd(steps, "mnode-mnode", mnodeInitMnode, mnodeCleanupMnode);
@@ -177,11 +176,12 @@ int32_t mnodeDeploy() {
 }
 
 void mnodeUnDeploy() {
-  mnodeUnDeploySdb();
+  sdbUnDeploy();
   mnodeCleanup();
 }
 
 int32_t mnodeInit(SMnodePara para) {
+  mDebugFlag = 207;
   if (tsMint.state != MN_STATUS_UNINIT) {
     return 0;
   } else {
@@ -202,10 +202,10 @@ int32_t mnodeInit(SMnodePara para) {
     return -1;
   }
 
-  code = mnodeReadSdb();
+  code = sdbRead();
   if (code != 0) {
     if (mnodeNeedDeploy()) {
-      code = mnodeDeploySdb();
+      code = sdbDeploy();
       if (code != 0) {
         mnodeCleanupStep1();
         tsMint.state = MN_STATUS_UNINIT;