/*
  Copyright 2018-2019, Barcelona Supercomputing Center (BSC), Spain
  Copyright 2015-2019, Johannes Gutenberg Universitaet Mainz, Germany

  This software was partially supported by the
  EC H2020 funded project NEXTGenIO (Project ID: 671951, www.nextgenio.eu).

  This software was partially supported by the
  ADA-FS project under the SPPEXA project funded by the DFG.

  SPDX-License-Identifier: MIT
*/

#ifndef GEKKOFS_CONFIG_HPP
#define GEKKOFS_CONFIG_HPP

#include <global/cmake_configure.hpp>

// environment prefixes (are concatenated in env module at compile time)
#define CLIENT_ENV_PREFIX "LIBGKFS_"
#define DAEMON_ENV_PREFIX "GKFS_"

namespace gkfs_config {

    constexpr auto hostfile_path = "./gkfs_hosts.txt";

    namespace io {
        /*
         * Zero buffer before read. This is relevant if sparse files are used.
         * If buffer is not zeroed, sparse regions contain invalid data.
         */
        constexpr auto zero_buffer_before_read = false;
    }

    namespace logging {
        constexpr auto client_log_path = "/tmp/gkfs_client.log";
        constexpr auto daemon_log_path = "/tmp/gkfs_daemon.log";

        constexpr auto client_log_level = "info,errors,critical,mercury";
        constexpr auto daemon_log_level = 4; //info
    }

    namespace metadata {

        // which metadata should be considered apart from size and mode
        constexpr auto use_atime = false;
        constexpr auto use_ctime = false;
        constexpr auto use_mtime = false;
        constexpr auto use_link_cnt = false;
        constexpr auto use_blocks = false;
    }

    namespace rpc {
        constexpr auto chunksize = 524288; // in bytes (e.g., 524288 == 512KB)
        //size of preallocated buffer to hold directory entries in rpc call
        constexpr auto dirents_buff_size = (8 * 1024 * 1024); // 8 mega
        /*
         * Indicates the number of concurrent progress to drive I/O operations of chunk files to and from local file systems
         * The value is directly mapped to created Argobots xstreams, controlled in a single pool with ABT_snoozer scheduler
         */
        constexpr auto daemon_io_xstreams = 8;
        // Number of threads used for RPC handlers at the daemon
        constexpr auto daemon_handler_xstreams = 8;
    }

    namespace rocksdb {
        // Write-ahead logging of rocksdb
        constexpr auto use_write_ahead_log = false;
    }
}

#endif //GEKKOFS_CONFIG_HPP