match with old file format

src/tsdb/inc/tsdbFile.h

@@ -177,6 +177,8 @@ int   tsdbEncodeSDFile(void** buf, SDFile* pDFile);
 void* tsdbDecodeSDFile(void* buf, SDFile* pDFile);
 int   tsdbCreateDFile(SDFile* pDFile, bool updateHeader);
 int   tsdbUpdateDFileHeader(SDFile* pDFile);
+int   tsdbLoadDFileHeader(SDFile* pDFile, SDFInfo* pInfo);
+int   tsdbParseDFilename(const char* fname, int* vid, int* fid, TSDB_FILE_T* ftype, uint32_t* version);
 
 static FORCE_INLINE void tsdbSetDFileInfo(SDFile* pDFile, SDFInfo* pInfo) { pDFile->info = *pInfo; }
 

src/tsdb/src/tsdbFS.c

@@ -21,7 +21,7 @@ static const char *tsdbTxnFname[] = {"current.t", "current"};
 
 static int  tsdbComparFidFSet(const void *arg1, const void *arg2);
 static void tsdbResetFSStatus(SFSStatus *pStatus);
-static int  tsdbApplyFSTxn(STsdbFS *pfs, int vid);
+static int  tsdbSaveFSStatus(SFSStatus *pStatus, int vid);
 static void tsdbApplyFSTxnOnDisk(SFSStatus *pFrom, SFSStatus *pTo);
 static void tsdbGetTxnFname(int repoid, TSDB_TXN_FILE_T ftype, char fname[]);
 static int  tsdbOpenFSFromCurrent(STsdbRepo *pRepo);
@@ -30,6 +30,7 @@ static int  tsdbScanRootDir(STsdbRepo *pRepo);
 static int  tsdbScanDataDir(STsdbRepo *pRepo);
 static bool tsdbIsTFileInFS(STsdbFS *pfs, const TFILE *pf);
 static int  tsdbRestoreCurrent(STsdbRepo *pRepo);
+static int  tsdbComparTFILE(const void *arg1, const void *arg2);
 
 // ================== CURRENT file header info
 static int tsdbEncodeFSHeader(void **buf, SFSHeader *pHeader) {
@@ -291,7 +292,7 @@ int tsdbEndFSTxn(STsdbRepo *pRepo) {
   SFSStatus *pStatus;
 
   // Write current file system snapshot
-  if (tsdbApplyFSTxn(pfs, REPO_ID(pRepo)) < 0) {
+  if (tsdbSaveFSStatus(pfs->nstatus, REPO_ID(pRepo)) < 0) {
     tsdbEndFSTxnWithError(pfs);
     return -1;
   }
@@ -321,8 +322,7 @@ void tsdbUpdateMFile(STsdbFS *pfs, const SMFile *pMFile) { tsdbSetStatusMFile(pf
 
 int tsdbUpdateDFileSet(STsdbFS *pfs, const SDFileSet *pSet) { return tsdbAddDFileSetToStatus(pfs->nstatus, pSet); }
 
-static int tsdbApplyFSTxn(STsdbFS *pfs, int vid) {
-  ASSERT(FS_IN_TXN(pfs));
+static int tsdbSaveFSStatus(SFSStatus *pStatus, int vid) {
   SFSHeader fsheader;
   void *    pBuf = NULL;
   void *    ptr;
@@ -340,17 +340,17 @@ static int tsdbApplyFSTxn(STsdbFS *pfs, int vid) {
   }
 
   fsheader.version = TSDB_FS_VERSION;
-  if (pfs->nstatus->pmf == NULL) {
-    ASSERT(taosArrayGetSize(pfs->nstatus->df) == 0);
+  if (pStatus->pmf == NULL) {
+    ASSERT(taosArrayGetSize(pStatus->df) == 0);
     fsheader.len = 0;
   } else {
-    fsheader.len = tsdbEncodeFSStatus(NULL, pfs->nstatus) + sizeof(TSCKSUM);
+    fsheader.len = tsdbEncodeFSStatus(NULL, pStatus) + sizeof(TSCKSUM);
   }
 
   // Encode header part and write
   ptr = hbuf;
   tsdbEncodeFSHeader(&ptr, &fsheader);
-  tsdbEncodeFSMeta(&ptr, &(pfs->nstatus->meta));
+  tsdbEncodeFSMeta(&ptr, &(pStatus->meta));
 
   taosCalcChecksumAppend(0, (uint8_t *)hbuf, TSDB_FILE_HEAD_SIZE);
 
@@ -370,7 +370,7 @@ static int tsdbApplyFSTxn(STsdbFS *pfs, int vid) {
     }
 
     ptr = pBuf;
-    tsdbEncodeFSStatus(&ptr, pfs->nstatus);
+    tsdbEncodeFSStatus(&ptr, pStatus);
     taosCalcChecksumAppend(0, (uint8_t *)pBuf, fsheader.len);
 
     if (taosWrite(fd, pBuf, fsheader.len) < fsheader.len) {
@@ -900,42 +900,290 @@ static bool tsdbIsTFileInFS(STsdbFS *pfs, const TFILE *pf) {
   return false;
 }
 
-static int tsdbRestoreCurrent(STsdbRepo *pRepo) {
+static int tsdbRestoreMeta(STsdbRepo *pRepo) {
   char         rootDir[TSDB_FILENAME_LEN];
-  char         dataDir[TSDB_FILENAME_LEN];
+  char         bname[TSDB_FILENAME_LEN];
   TDIR *       tdir = NULL;
   const TFILE *pf = NULL;
-  char         bname[TSDB_FILENAME_LEN];
+  const char * pattern = "^meta(-ver[0-9]+)?$";
+  regex_t      regex;
+  STsdbFS *    pfs = REPO_FS(pRepo);
+
+  regcomp(&regex, pattern, REG_EXTENDED);
+
+  tsdbInfo("vgId:%d try to restore meta", REPO_ID(pRepo));
 
-  // 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));
+    regfree(&regex);
     return -1;
   }
 
   while ((pf = tfsReaddir(tdir))) {
     tfsbasename(pf, bname);
-    if (strncmp(bname, "meta", sizeof("meta")) == 0) {
-      // TODO
-      break;
+
+    if (strcmp(bname, "data") == 0) {
+      // Skip the data/ directory
+      continue;
+    }
+
+    if (strcmp(bname, tsdbTxnFname[TSDB_TXN_TEMP_FILE]) == 0) {
+      // Skip current.t file
+      tsdbInfo("vgId:%d file %s exists, remove it", REPO_ID(pRepo), TFILE_NAME(pf));
+      tfsremove(pf);
+      continue;
     }
+
+    int code = regexec(&regex, bname, 0, NULL, 0);
+    if (code == 0) {
+      // Match
+      if (pfs->cstatus->pmf != NULL) {
+        tsdbError("vgId:%d failed to restore meta since two file exists, file1 %s and file2 %s", REPO_ID(pRepo),
+                  TSDB_FILE_FULL_NAME(pfs->cstatus->pmf), TFILE_NAME(pf));
+        terrno = TSDB_CODE_TDB_FILE_CORRUPTED;
+        tfsClosedir(tdir);
+        regfree(&regex);
+        return -1;
+      } else {
+        uint32_t version = 0;
+        if (strcmp(bname, "meta") != 0) {
+          sscanf(bname, "meta-ver%" PRIu32, &version);
+          pfs->cstatus->meta.version = version;
+        }
+
+        pfs->cstatus->pmf = &(pfs->cstatus->mf);
+        pfs->cstatus->pmf->f = *pf;
+        TSDB_FILE_SET_CLOSED(pfs->cstatus->pmf);
+
+        if (tsdbOpenMFile(pfs->cstatus->pmf, O_RDONLY) < 0) {
+          tsdbError("vgId:%d failed to restore meta since %s", REPO_ID(pRepo), tstrerror(terrno));
+          tfsClosedir(tdir);
+          regfree(&regex);
+          return -1;
+        }
+
+        if (tsdbLoadMFileHeader(pfs->cstatus->pmf, &(pfs->cstatus->pmf->info)) < 0) {
+          tsdbError("vgId:%d failed to restore meta since %s", REPO_ID(pRepo), tstrerror(terrno));
+          tfsClosedir(tdir);
+          regfree(&regex);
+          return -1;
+        }
+
+        tsdbCloseMFile(pfs->cstatus->pmf);
+      }
+    } else if (code == REG_NOMATCH) {
+      // Not match
+      tsdbInfo("vgId:%d invalid file %s exists, remove it", REPO_ID(pRepo), TFILE_NAME(pf));
+      tfsremove(pf);
+      continue;
+    } else {
+      // Has other error
+      tsdbError("vgId:%d failed to restore meta file while run regexec since %s", REPO_ID(pRepo), strerror(code));
+      terrno = TAOS_SYSTEM_ERROR(code);
+      tfsClosedir(tdir);
+      regfree(&regex);
+      return -1;
+    }
+  }
+
+  if (pfs->cstatus->pmf) {
+    tsdbInfo("vgId:%d meta file %s is restored", REPO_ID(pRepo), TSDB_FILE_FULL_NAME(pfs->cstatus->pmf));
+  } else {
+    tsdbInfo("vgId:%d no meta file is restored", REPO_ID(pRepo));
   }
 
   tfsClosedir(tdir);
+  regfree(&regex);
+  return 0;
+}
+
+static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
+  char         dataDir[TSDB_FILENAME_LEN];
+  char         bname[TSDB_FILENAME_LEN];
+  TDIR *       tdir = NULL;
+  const TFILE *pf = NULL;
+  const char * pattern = "^v[0-9]+f[0-9]+\\.(head|data|last)(-ver[0-9]+)?$";
+  SArray *     fArray = NULL;
+  regex_t      regex;
+  STsdbFS *    pfs = REPO_FS(pRepo);
 
-  // Loop to recover dfile set
   tsdbGetDataDir(REPO_ID(pRepo), dataDir);
+
+  // Resource allocation and init
+  regcomp(&regex, pattern, REG_EXTENDED);
+
+  fArray = taosArrayInit(1024, sizeof(TFILE));
+  if (fArray == NULL) {
+    terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
+    tsdbError("vgId:%d failed to restore DFileSet while open directory %s since %s", REPO_ID(pRepo), dataDir,
+              tstrerror(terrno));
+    regfree(&regex);
+    return -1;
+  }
+
   tdir = tfsOpendir(dataDir);
   if (tdir == NULL) {
-    tsdbError("vgId:%d failed to open dir %s since %s", REPO_ID(pRepo), rootDir, tstrerror(terrno));
+    tsdbError("vgId:%d failed to restore DFileSet while open directory %s since %s", REPO_ID(pRepo), dataDir,
+              tstrerror(terrno));
+    taosArrayDestroy(fArray);
+    regfree(&regex);
     return -1;
   }
 
-  // TODO
+  while ((pf = tfsReaddir(tdir))) {
+    tfsbasename(pf, bname);
+
+    int code = regexec(&regex, bname, 0, NULL, 0);
+    if (code == 0) {
+      if (taosArrayPush(fArray, (void *)pf) < 0) {
+        terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
+        tfsClosedir(tdir);
+        taosArrayDestroy(fArray);
+        regfree(&regex);
+        return -1;
+      }
+    } else if (code == REG_NOMATCH) {
+      // Not match
+      tsdbInfo("vgId:%d invalid file %s exists, remove it", REPO_ID(pRepo), TFILE_NAME(pf));
+      tfsremove(pf);
+      continue;
+    } else {
+      // Has other error
+      tsdbError("vgId:%d failed to restore DFileSet Array while run regexec since %s", REPO_ID(pRepo), strerror(code));
+      terrno = TAOS_SYSTEM_ERROR(code);
+      tfsClosedir(tdir);
+      taosArrayDestroy(fArray);
+      regfree(&regex);
+      return -1;
+    }
+  }
 
   tfsClosedir(tdir);
+  regfree(&regex);
+
+  // Sort the array according to file name
+  taosArraySort(fArray, tsdbComparTFILE);
+
+  size_t index = 0;
+  // Loop to recover each file set
+  for (;;) {
+    if (index >= taosArrayGetSize(fArray)) {
+      break;
+    }
+
+    SDFileSet fset = {0};
+
+    TSDB_FSET_SET_CLOSED(&fset);
+
+    // Loop to recover ONE fset
+    for (TSDB_FILE_T ftype = 0; ftype < TSDB_FILE_MAX; ftype++) {
+      SDFile *pDFile = TSDB_DFILE_IN_SET(&fset, ftype);
+
+      if (index >= taosArrayGetSize(fArray)) {
+        tsdbError("vgId:%d incomplete DFileSet, fid:%d", REPO_ID(pRepo), fset.fid);
+        taosArrayDestroy(fArray);
+        return -1;
+      }
+
+      pf = taosArrayGet(fArray, index);
+
+      int         tvid, tfid;
+      TSDB_FILE_T ttype;
+      uint32_t    tversion;
+
+      tsdbParseDFilename(TFILE_NAME(pf), &tvid, &tfid, &ttype, &tversion);
+
+      ASSERT(tvid == REPO_ID(pRepo));
+
+      if (ftype == 0) {
+        fset.fid = tfid;
+      } else {
+        if (tfid != fset.fid) {
+          tsdbError("vgId:%d incomplete dFileSet, fid:%d", REPO_ID(pRepo), fset.fid);
+          taosArrayDestroy(fArray);
+          return -1;
+        }
+      }
+
+      if (ttype != ftype) {
+        tsdbError("vgId:%d incomplete dFileSet, fid:%d", REPO_ID(pRepo), fset.fid);
+        taosArrayDestroy(fArray);
+        return -1;
+      }
+
+      pDFile->f = *pf;
+      
+      if (tsdbOpenDFile(pDFile, O_RDONLY) < 0) {
+        tsdbError("vgId:%d failed to open DFile %s since %s", REPO_ID(pRepo), TSDB_FILE_FULL_NAME(pDFile), tstrerror(terrno));
+        taosArrayDestroy(fArray);
+        return -1;
+      }
+
+      if (tsdbLoadDFileHeader(pDFile, &(pDFile->info)) < 0) {
+        tsdbError("vgId:%d failed to load DFile %s header since %s", REPO_ID(pRepo), TSDB_FILE_FULL_NAME(pDFile),
+                  tstrerror(terrno));
+        taosArrayDestroy(fArray);
+        return -1;
+      }
+
+      tsdbCloseDFile(pDFile);
+    }
+
+    taosArrayPush(pfs->cstatus->df, &fset);
+  }
+
+  // Resource release
+  taosArrayDestroy(fArray);
 
   return 0;
+}
+
+static int tsdbRestoreCurrent(STsdbRepo *pRepo) {
+  // Loop to recover mfile
+  if (tsdbRestoreMeta(pRepo) < 0) {
+    tsdbError("vgId:%d failed to restore current since %s", REPO_ID(pRepo), tstrerror(terrno));
+    return -1;
+  }
+
+  // Loop to recover dfile set
+  if (tsdbRestoreDFileSet(pRepo) < 0) {
+    tsdbError("vgId:%d failed to restore DFileSet since %s", REPO_ID(pRepo), tstrerror(terrno));
+    return -1;
+  }
+
+  if (tsdbSaveFSStatus(pRepo->fs->cstatus, REPO_ID(pRepo)) < 0) {
+    tsdbError("vgId:%d failed to restore corrent since %s", REPO_ID(pRepo), tstrerror(terrno));
+    return -1;
+  }
+
+  return 0;
+}
+
+static int tsdbComparTFILE(const void *arg1, const void *arg2) {
+  TFILE *pf1 = (TFILE *)arg1;
+  TFILE *pf2 = (TFILE *)arg2;
+
+  int         vid1, fid1, vid2, fid2;
+  TSDB_FILE_T ftype1, ftype2;
+  uint32_t    version1, version2;
+
+  tsdbParseDFilename(TFILE_NAME(pf1), &vid1, &fid1, &ftype1, &version1);
+  tsdbParseDFilename(TFILE_NAME(pf2), &vid2, &fid2, &ftype2, &version2);
+
+  if (fid1 < fid2) {
+    return -1;
+  } else if (fid1 > fid2) {
+    return 1;
+  } else {
+    if (ftype1 < ftype2) {
+      return -1;
+    } else if (ftype1 > ftype2) {
+      return 1;
+    } else {
+      return 0;
+    }
+  }
 }
\ No newline at end of file

src/tsdb/src/tsdbFile.c

@@ -351,6 +351,23 @@ int tsdbUpdateDFileHeader(SDFile *pDFile) {
   return 0;
 }
 
+int tsdbLoadDFileHeader(SDFile *pDFile, SDFInfo *pInfo) {
+  char buf[TSDB_FILE_HEAD_SIZE] = "\0";
+
+  ASSERT(TSDB_FILE_OPENED(pDFile));
+
+  if (tsdbSeekDFile(pDFile, 0, SEEK_SET) < 0) {
+    return -1;
+  }
+
+  if (tsdbReadDFile(pDFile, buf, TSDB_FILE_HEAD_SIZE) < 0) {
+    return -1;
+  }
+
+  tsdbDecodeDFInfo(buf, pInfo);
+  return 0;
+}
+
 static int tsdbScanAndTryFixDFile(SDFile *pDFile) {
   struct stat dfstat;
   SDFile      df = *pDFile;
@@ -558,6 +575,23 @@ int tsdbScanAndTryFixDFileSet(SDFileSet *pSet) {
   return 0;
 }
 
+int tsdbParseDFilename(const char *fname, int *vid, int *fid, TSDB_FILE_T *ftype, uint32_t *version) {
+  char *p = NULL;
+  *version = 0;
+  *ftype = TSDB_FILE_MAX;
+
+  sscanf(fname, "v%df%d.%m[a-z]-ver%" PRIu32, vid, fid, &p, version);
+  for (TSDB_FILE_T i = 0; i < TSDB_FILE_MAX; i++) {
+    if (strcmp(p, TSDB_FNAME_SUFFIX[i]) == 0) {
+      *ftype = i;
+      break;
+    }
+  }
+
+  free(p);
+  return 0;
+}
+
 static void tsdbGetFilename(int vid, int fid, uint32_t ver, TSDB_FILE_T ftype, char *fname) {
   ASSERT(ftype != TSDB_FILE_MAX);