nfs.h

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Microsoft Corporation
 * 
 * -=- Robust Distributed System Nucleus (rDSN) -=- 
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

/*
 * Description:
 *     network file system component base interface
 *
 * Revision history:
 *     Mar., 2015, @imzhenyu (Zhenyu Guo), first version
 *     xxxx-xx-xx, author, fix bug about xxx
 */

# pragma once

# include <dsn/service_api_c.h>
# include <string>
# include <dsn/cpp/utils.h>
# include <dsn/tool-api/task.h>

namespace dsn {

    struct remote_copy_request
    {
        ::dsn::rpc_address   source;
        std::string source_dir;
        std::vector<std::string> files;
        std::string dest_dir;
        bool        overwrite;
    };

    struct remote_copy_response
    {

    };

    DSN_API extern void marshall(::dsn::binary_writer& writer, const remote_copy_request& val);

    DSN_API extern void unmarshall(::dsn::binary_reader& reader, /*out*/ remote_copy_request& val);
    
    class service_node;
    class task_worker_pool;
    class task_queue;

    class nfs_node
    {
    public:
        template <typename T> static nfs_node* create(service_node* node)
        {
            return new T(node);
        }

        typedef nfs_node* (*factory)(service_node*);

    public:
        nfs_node(service_node* node) : _node(node) {}

        virtual ~nfs_node() {}

        virtual ::dsn::error_code start(io_modifer& ctx) = 0;

        virtual error_code stop() = 0;

        virtual void call(std::shared_ptr<remote_copy_request> rci, aio_task* callback) = 0;
        
        service_node* node() { return _node; }

    protected:
        service_node* _node;
    };

}