Broker.h

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/* -*- c++ -*-
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable 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 any later version.
 *
 * Hypertable 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef FsBroker_Lib_Broker_h
#define FsBroker_Lib_Broker_h

#include "OpenFileMap.h"
#include "Response/Callback/Open.h"
#include "Response/Callback/Read.h"
#include "Response/Callback/Append.h"
#include "Response/Callback/Length.h"
#include "Response/Callback/Readdir.h"
#include "Response/Callback/Status.h"
#include "Response/Callback/Exists.h"

#include <Common/StaticBuffer.h>

#include <memory>

namespace Hypertable {

namespace FsBroker {

namespace Lib {


  class Broker {
  public:
    virtual ~Broker() { return; }
    virtual void open(Response::Callback::Open *cb, const char *fname,
                      uint32_t flags, uint32_t bufsz) = 0;

    virtual void create(Response::Callback::Open *cb, const char *fname,
                        uint32_t flags, int32_t bufsz,
                        int16_t replication, int64_t blksz) = 0;

    virtual void close(ResponseCallback *cb, uint32_t fd) = 0;

    virtual void read(Response::Callback::Read *cb, uint32_t fd,
                      uint32_t amount) = 0;

    virtual void append(Response::Callback::Append *cb, uint32_t fd,
                        uint32_t amount, const void *data, Filesystem::Flags flags) = 0;

    virtual void seek(ResponseCallback *cb, uint32_t fd, uint64_t offset) = 0;

    virtual void remove(ResponseCallback *cb, const char *fname) = 0;

    virtual void length(Response::Callback::Length *cb, const char *fname,
                        bool accurate = true) = 0;

    virtual void pread(Response::Callback::Read *cb, uint32_t fd, uint64_t offset,
                       uint32_t amount, bool verify_checksum) = 0;


    virtual void mkdirs(ResponseCallback *cb, const char *dname) = 0;

    virtual void rmdir(ResponseCallback *cb, const char *dname) = 0;

    virtual void readdir(Response::Callback::Readdir *cb, const char *dname) = 0;


    virtual void flush(ResponseCallback *cb, uint32_t fd) = 0;

    virtual void sync(ResponseCallback *cb, uint32_t fd) = 0;

    virtual void status(Response::Callback::Status *cb) = 0;

    virtual void shutdown(ResponseCallback *cb) = 0;

    virtual void exists(Response::Callback::Exists *cb, const char *fname) = 0;

    virtual void rename(ResponseCallback *cb, const char *src,
                        const char *dst) = 0;

    virtual void debug(ResponseCallback *cb, int32_t command,
                       StaticBuffer &serialized_parameters) = 0;


    OpenFileMap &get_open_file_map() { return m_open_file_map; }

  protected:
    OpenFileMap m_open_file_map;
  };

  typedef std::shared_ptr<Broker> BrokerPtr;


}}}

#endif // FsBroker_Lib_Broker_h