more progress

src/inc/tfs.h

@@ -74,6 +74,7 @@ void  tfsbasename(const TFILE *pf, char *dest);
 void  tfsdirname(const TFILE *pf, char *dest);
 
 // DIR APIs ====================================
+int tfsMkdirAt(const char *rname, int level, int id);
 int tfsMkdir(const char *rname);
 int tfsRmdir(const char *rname);
 int tfsRename(char *orname, char *nrname);

src/tfs/src/tfs.c

@@ -237,18 +237,24 @@ void tfsdirname(const TFILE *pf, char *dest) {
 }
 
 // DIR APIs ====================================
-int tfsMkdir(const char *rname) {
-  char aname[TSDB_FILENAME_LEN] = "\0";
+int tfsMkdirAt(const char *rname, int level, int id) {
+  SDisk *pDisk = TFS_DISK_AT(level, id);
+  char   aname[TSDB_FILENAME_LEN];
 
+  snprintf(aname, TSDB_FILENAME_LEN, "%s/%s", DISK_DIR(pDisk), rname);
+  if (taosMkDir(aname, 0755) != 0) {
+    terrno = TAOS_SYSTEM_ERROR(errno);
+    return -1;
+  }
+
+  return 0;
+}
+
+int tfsMkdir(const char *rname) {
   for (int level = 0; level < TFS_NLEVEL(); level++) {
     STier *pTier = TFS_TIER_AT(level);
     for (int id = 0; id < TIER_NDISKS(pTier); id++) {
-      SDisk *pDisk = DISK_AT_TIER(pTier, id);
-      snprintf(aname, TSDB_FILENAME_LEN, "%s/%s", DISK_DIR(pDisk), rname);
-
-      if (mkdir(aname, 0755) != 0 && errno != EEXIST) {
-        fError("failed to create directory %s since %s", aname, strerror(errno));
-        terrno = TAOS_SYSTEM_ERROR(errno);
+      if (tfsMkdirAt(rname, level, id) < 0) {
         return -1;
       }
     }

src/tsdb/src/tsdbFS.c

@@ -29,6 +29,7 @@ static int  tsdbScanAndTryFixFS(STsdbRepo *pRepo);
 static int  tsdbScanRootDir(STsdbRepo *pRepo);
 static int  tsdbScanDataDir(STsdbRepo *pRepo);
 static bool tsdbIsTFileInFS(STsdbFS *pfs, const TFILE *pf);
+static int  tsdbRestoreCurrent(STsdbRepo *pRepo);
 
 // ================== CURRENT file header info
 static int tsdbEncodeFSHeader(void **buf, SFSHeader *pHeader) {
@@ -232,7 +233,6 @@ void *tsdbFreeFS(STsdbFS *pfs) {
   return NULL;
 }
 
-// TODO
 int tsdbOpenFS(STsdbRepo *pRepo) {
   STsdbFS * pfs = REPO_FS(pRepo);
   char      current[TSDB_FILENAME_LEN] = "\0";
@@ -247,7 +247,10 @@ int tsdbOpenFS(STsdbRepo *pRepo) {
       return -1;
     }
  } else {
-    // TODO: current file not exists, try to recover it
+   if (tsdbRestoreCurrent(pRepo) < 0) {
+     tsdbError("vgId:%d failed to restore current file since %s", REPO_ID(pRepo), tstrerror(terrno));
+     return -1;
+   }
   }
 
   // Load meta cache if has meta file
@@ -259,7 +262,6 @@ int tsdbOpenFS(STsdbRepo *pRepo) {
   return 0;
 }
 
-// TODO
 void tsdbCloseFS(STsdbRepo *pRepo) {
   // TODO
 }
@@ -896,4 +898,44 @@ static bool tsdbIsTFileInFS(STsdbFS *pfs, const TFILE *pf) {
   }
 
   return false;
+}
+
+static int tsdbRestoreCurrent(STsdbRepo *pRepo) {
+  char         rootDir[TSDB_FILENAME_LEN];
+  char         dataDir[TSDB_FILENAME_LEN];
+  TDIR *       tdir = NULL;
+  const TFILE *pf = NULL;
+  char         bname[TSDB_FILENAME_LEN];
+
+  // Loop to recover mfile
+  tsdbGetRootDir(REPO_ID(pRepo), rootDir);
+  tdir = tfsOpendir(rootDir);
+  if (tdir == NULL) {
+    tsdbError("vgId:%d failed to open dir %s since %s", REPO_ID(pRepo), rootDir, tstrerror(terrno));
+    return -1;
+  }
+
+  while ((pf = tfsReaddir(tdir))) {
+    tfsbasename(pf, bname);
+    if (strncmp(bname, "meta", sizeof("meta")) == 0) {
+      // TODO
+      break;
+    }
+  }
+
+  tfsClosedir(tdir);
+
+  // Loop to recover dfile set
+  tsdbGetDataDir(REPO_ID(pRepo), dataDir);
+  tdir = tfsOpendir(dataDir);
+  if (tdir == NULL) {
+    tsdbError("vgId:%d failed to open dir %s since %s", REPO_ID(pRepo), rootDir, tstrerror(terrno));
+    return -1;
+  }
+
+  // TODO
+
+  tfsClosedir(tdir);
+
+  return 0;
 }

src/tsdb/src/tsdbFile.c

@@ -308,6 +308,7 @@ int tsdbCreateDFile(SDFile *pDFile, bool updateHeader) {
   ASSERT(pDFile->info.size == 0 && pDFile->info.magic == TSDB_FILE_INIT_MAGIC);
 
   char buf[TSDB_FILE_HEAD_SIZE] = "\0";
+  // TODO: need to check if directory exists, if not, create the directory
 
   pDFile->fd = open(TSDB_FILE_FULL_NAME(pDFile), O_WRONLY | O_CREAT | O_TRUNC, 0755);
   if (pDFile->fd < 0) {

src/tsdb/src/tsdbSync.c

@@ -655,6 +655,7 @@ static int32_t tsdbRecvDFileSetInfo(SSyncH *pSynch) {
 }
 
 static int tsdbReload(STsdbRepo *pRepo, bool isMfChanged) {
+  // TODO: may need to stop and restart stream
   if (isMfChanged) {
     tsdbCloseMeta(pRepo);
     tsdbFreeMeta(pRepo->tsdbMeta);