extent_client.h

// extent client interface.

#ifndef extent_client_h
#define extent_client_h

#include <string>
#include "extent_protocol.h"
#include "rpc.h"

class extent_client {
private:
    rpcc *cl;
    struct extent_cache {
        std::string data;
        extent_protocol::attr attr;
        bool dirty;
        bool attr_only;
        bool removed;
    };

    std::mutex cache_mtx;
    std::unordered_map<extent_protocol::extentid_t, extent_cache> cache_map;

public:
    extent_client(std::string dst);

    extent_protocol::status get(extent_protocol::extentid_t eid, 
            std::string &buf);
    extent_protocol::status getattr(extent_protocol::extentid_t eid, 
            extent_protocol::attr &a);
    extent_protocol::status put(extent_protocol::extentid_t eid, std::string buf);
    extent_protocol::status remove(extent_protocol::extentid_t eid);
    extent_protocol::status flush(extent_protocol::extentid_t eid);

};

#endif