//dot -Tpng cmd_logic.dot -o cmd_logic.png
digraph G {
    rankdir=TB;
    rankdir=LR;
    nodesep=1;
//ranksep=1
    fontname = "Microsoft YaHei";
    fontsize = 28;
    penwidth = 4;
    compound=true;

    node [shape = record];
    edge [fontname = "Arial", fontsize = 20, color="darkgreen" ];

    user[label="User",color=blue,shape=ellipse, style=filled, fillcolor=green];
    dockerfile[label="Dockerfile",color=blue];
    daemon[label="Daemon",color=blue];
    image[label="Image",color=blue];
    registry[label="Registry",color=blue];
    tar[label="Tar files",color=blue];
    network[label="Network",color=blue]
    service[label="Service",color=blue]
    swarm[label="Swarm",color=blue]
    volume[label="Volume",color=blue]

    subgraph cluster_container {
		label = "Container";
        labelloc = "c";
        nodesep=.5;
        style = "bold";
        color = blue;
        edge [fontname = "Arial", fontsize = 20, color="skyblue" ];
		//node [style=filled];
        create[label="Created",shape=circle, style=filled, fillcolor=lightblue];
        run[label="Running",shape=circle, style=filled, fillcolor=green];
        pause[label="Paused",shape=circle, style=filled, fillcolor=blue];
        stop[label="Stopped",shape=circle, style=filled, fillcolor=red];
        exit[label="Exited",shape=circle, style=filled, fillcolor=gray];

        create->run[label=<<i>start</i>>];
        run->pause[label="pause"];
        pause->run[label="unpause"];
        run->run[label="restart"];
        run->stop[label="stop"];
        run->exit[label="kill"];
        stop->run[label="start"];
	}

    //dockerfile
    dockerfile->image[label="build"];

    //container
    run->image[headlabel="commit", labeldistance=7.5, ltail=cluster_container];
    run->tar[label="export",ltail=cluster_container];
    run->network[label="connect | disconnect",ltail=cluster_container];

    //image
    image->create[label="create"];
    image->run[label="run"];
    image->tar[label="save"];
    image->registry[label="push"];

    //tar
    tar->image[label="import | load"];
    image->registry[label="push"];

    //registry
    registry->image[label="pull"];

    //network
    network->network[label="create | rm | ls | inspect"]

    //user
    user->run[label="attach | cp | diff | exec | inspect | logs | ps | rename | rm | stats | top | update | wait",lhead=cluster_container]
    user->image[label="history | images | rmi | tag"]
    user->daemon[label="event | info | version"]
    user->registry[label="login | logout | search"]

    //heat[label="heat commands",color=blue];
    //heatshell[label="heatclient.shell.HeatShell",color=blue];
    //shell[label="{heatclient.v1.shell|+do_stack_create\l+do_stack_show\l+do_stack_update\l...\l+do_event_list\l...\l+do_resource_list\l...\l+do_resource_type_show\l...\l+do_template_show\l...\l}",color=blue];
    //heatclient[label="heatclient.client.Client",color=blue];
    //client[label="heatclient.v1.client.Client",color=blue];
    //httpclient[label="heatclient.common.http.HTTPClient",color=blue];



    //openstackservices[label="{OpenStack Services|+Nova\l+Neutron\l+Keystone\l...}",color=blue];

    //{rank=same; image registry dockerfile tar}
    //{rank=same; container}
    //{rank=same; user}
}