design.dot

# dot -T png design.dot >design.png && xv design.png

digraph Hefur
{
        fontname="monospace";
        fontsize=8;

        node [fontname="monospace",fontsize=8,shape="record"];
        edge [fontname="monospace",fontsize=8,shape="record"];

        Hefur [shape=record,label="{Hefur|/Singleton/}"];
        TorrentDb;
        Torrent;
        Peer;
        HttpServer;
        AnnounceRequest;
        AnnounceResponse;
        AnnounceHandler;
        ScrapeRequest;
        ScrapeResponse;
        ScrapeHandler;
        StatHandler;
        UdpServer;
        FsTreeWhiteList;

        Hefur -> TorrentDb [arrowhead=diamond];
        Hefur -> FsTreeWhiteList [arrowhead=diamond];
        Hefur -> HttpServer [arrowhead=diamond];
        Hefur -> UdpServer [arrowhead=diamond];

        Torrent -> Peer [arrowhead=odiamond];

        TorrentDb -> Torrent [arrowhead=odiamond];

        HttpServer -> AnnounceHandler [arrowhead=diamond];
        HttpServer -> ScrapeHandler [arrowhead=diamond];
        HttpServer -> StatHandler [arrowhead=diamond];

        AnnounceHandler -> AnnounceRequest;
        ScrapeHandler -> ScrapeRequest;
        UdpServer -> AnnounceRequest;
        UdpServer -> ScrapeRequest;

        AnnounceRequest -> AnnounceResponse;
        ScrapeRequest -> ScrapeResponse;

        FsTreeWhiteList -> TorrentDb;
}