bcfg2-overview.gv

digraph bcfg2 {
    label = "Rearchitecture Overview - Normal Client Request";
    node [style="filled"];
    compound = true;
    
    "master1" [shape = "record",
               label = "Master server | SSL | Authentication"];

    subgraph cluster_rabbitmq {
        label="AMQP";
        "stats-q" [label="Statistics Processing Queue"];
        "config-q" [label="Configuration queue"];
    }

    subgraph cluster_stats_procs {
        label = "Statistics Processors";
        "stats-proc1" [label = "Processor 1"];
        "stats-proc2" [label = "Processor 2"];
    }

    subgraph cluster_renderers {
        label = "Configuration Renderers";
        "renderer1" [label = "Renderer 1"];
        "renderer2" [label = "Renderer 2"];
        "renderer3" [label = "Renderer 3"];
    }

    "db1" [label = "SQL Database"];
    "vcs" [label = "VCS"];

    // content system communications
    "vcs" -> "renderer2" [lhead=cluster_renderers];
    "renderer2" -> "vcs" [ltail=cluster_renderers];
    "db1" -> "renderer2" [lhead=cluster_renderers];
    "renderer2" -> "db1" [ltail=cluster_renderers];

    // queue for submitting render requests and getting configs
    "config-q" -> "master1";
    "master1" -> "config-q";
    "config-q" -> "renderer2" [lhead=cluster_renderers];
    "renderer2" -> "config-q" [ltail=cluster_renderers];

    "Client" -> "master1" [ label="Encrypted 6789/tcp" ];

    // statistics processing queue
    "master1" -> "stats-q";
    "stats-proc2" -> "db1" [ltail="cluster_stats_procs"];
    "stats-q" -> "stats-proc1" [lhead=cluster_stats_procs];
}