tsdbCompact.c

/*
 * 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/>.
 */

#include "tsdb.h"

typedef struct {
  STsdb  *pTsdb;
  STsdbFS fs;
} STsdbCompactor;

#define TSDB_FLG_DEEP_COMPACT 0x1

static int32_t tsdbBeginCompact(STsdb *pTsdb) {
  int32_t code = 0;
  int32_t lino = 0;

  // TODO
_exit:
  if (code) {
    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
  }
  return code;
}

static int32_t tsdbCommitCompact(STsdb *pTsdb) {
  int32_t code = 0;
  int32_t lino = 0;

  // TODO

_exit:
  if (code) {
    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
  }
  return code;
}

static int32_t tsdbAbortCompact(STsdb *pTsdb) {
  int32_t code = 0;
  int32_t lino = 0;

  // TODO

_exit:
  if (code) {
    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
  }
  return code;
}

static int32_t tsdbDeepCompact(STsdb *pTsdb) {
  int32_t code = 0;
  int32_t lino = 0;

  // TODO

_exit:
  if (code) {
    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
  }
  return code;
}

static int32_t tsdbShallowCompact(STsdb *pTsdb) {
  int32_t code = 0;
  int32_t lino = 0;

  // TODO

_exit:
  if (code) {
    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t tsdbCompact(STsdb *pTsdb, int32_t flag) {
  int32_t code = 0;
  int32_t lino = 0;

  // Check if can do compact (TODO)

  // Do compact
  code = tsdbBeginCompact(pTsdb);
  TSDB_CHECK_CODE(code, lino, _exit);

  if (flag & TSDB_FLG_DEEP_COMPACT) {
    code = tsdbDeepCompact(pTsdb);
    TSDB_CHECK_CODE(code, lino, _exit);
  } else {
    code = tsdbShallowCompact(pTsdb);
    TSDB_CHECK_CODE(code, lino, _exit);
  }

_exit:
  if (code) {
    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
    tsdbAbortCompact(pTsdb);
  } else {
    tsdbCommitCompact(pTsdb);
  }
  return code;
}