//------------------------------------------------------------------------------
//! @file cacheconfig.hh
//! @author Andreas-Joachim Peters CERN
//! @brief cacheconfig class
//------------------------------------------------------------------------------

/************************************************************************
 * EOS - the CERN Disk Storage System                                   *
 * Copyright (C) 2016 CERN/Switzerland                                  *
 *                                                                      *
 * This program is free software: you can redistribute it and/or modify *
 * it under the terms of the GNU General Public License as published by *
 * the Free Software Foundation, either version 3 of the License, or    *
 * (at your option) any later version.                                  *
 *                                                                      *
 * 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.  See the        *
 * GNU General Public License for more details.                         *
 *                                                                      *
 * You should have received a copy of the GNU General Public License    *
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.*
 ************************************************************************/

#ifndef FUSE_CACHECONFIG_HH_
#define FUSE_CACHECONFIG_HH_

enum cache_t {
  INVALID, MEMORY, DISK
};

struct cacheconfig {
  cacheconfig () {
    type = INVALID;
    total_file_cache_size = total_file_cache_inodes = per_file_cache_max_size = total_file_journal_size = total_file_journal_inodes = per_file_journal_max_size = default_read_ahead_size = max_inflight_read_ahead_buffer_size = max_inflight_write_buffer_size = max_read_ahead_size = 0 ;
    max_read_ahead_blocks = 0;
    read_ahead_sparse_ratio = 0;
    clean_threshold = 0;
    clean_on_startup = false;
  }

  cache_t type;
  std::string location;
  uint64_t total_file_cache_size; // total size of the file cache
  uint64_t total_file_cache_inodes; // max number of inodes in the file cache
  uint64_t per_file_cache_max_size; // per file maximum file cache size
  uint64_t total_file_journal_size; // total size of the journal cache
  uint64_t total_file_journal_inodes; // max number of inodes in the journal cache
  uint64_t per_file_journal_max_size; // per file maximum journal cache size
  uint64_t default_read_ahead_size; // default start value for read-ahead
  uint64_t max_inflight_read_ahead_buffer_size; // max size of read-ahead-buffers
  uint64_t max_inflight_write_buffer_size; // max size of write buffers
  uint64_t max_read_ahead_size; // max value for read-ahead block size
  size_t max_read_ahead_blocks; // max  number of read-ahead blocks
  float clean_threshold; // filling percentage of the cache disk when we start to delete
  std::string read_ahead_strategy; // string values 'none', 'static', 'dynamic'
  float    read_ahead_sparse_ratio; // ratio of sparseness when to disable permanently read-ahead

  std::string journal;
  bool clean_on_startup; // indicate that the cache is not reusable after restart
};

#endif