// This is a graphviz file. To generate a diagram from this source,
// you must first install graphviz (available from homebrew). Then run
// the following command:
//
// dot -Tpng -o security_use_case_diagram.png security_use_case_diagram.dot

digraph G {
    graph [fontsize = 14, penwidth = 0, rankdir = UD];
    node [shape = "plaintext"];
    edge [fontsize = 9, style = dotted, arrowhead = empty];

    subgraph cluster_external {
        label = "External systems";
        penwidth = 1;

        subgraph cluster_externalbrowser {
            label = "EDN-attached web browser";
            penwidth = 0;
            externalbrowser_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_externalorchestration {
            label = "ATLAS/Orchestration";
            penwidth = 0;
            externalorchestration_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_externalvmb{
            label = "VMB";
            penwidth = 0;
            externalvmb_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_externalgitlab {
            label = "GitLab";
            penwidth = 0;
            externalgitlab_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_externalartifactory {
            label = "Artifactory";
            penwidth = 0;
            externalartifactory_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_externalinfoblox {
            label = "CDS Infoblox";
            penwidth = 0;
            externalinfoblox_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_externalldap {
            label = "USWIN LDAP";
            penwidth = 0;
            externalldap_icon [label = "", image = "computer.png"];
        }
    }

    subgraph cluster_middlewarestack {
        label = "Automation stack";
        penwidth = 1;

        subgraph cluster_middlewarestackansible {
            label = "Ansible/DNS hosts";
            penwidth = 0;
            middlewarestackansible_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_middlewarestackapp {
            label = "Middleware/Icinga hosts";
            penwidth = 0;
            middlewarestackapp_icon [label = "", image = "computer.png"];
        }

        subgraph cluster_middlewarestackdatabase {
            label = "Database hosts";
            penwidth = 0;
            middlewarestackdatabase_icon [label = "", image = "drive-removable-media.png"];
        }

        subgraph cluster_middlewarestacklb {
            label = "Load balancer hosts";
            penwidth = 0;
            middlewarestacklb_icon [label = "", image = "computer.png"];
        }
    }

    subgraph cluster_wr {
        label = "Wind River platform";
        penwidth = 1;

        subgraph cluster_wrcentral {
            label = "Central controller cluster";

            subgraph cluster_wrcentralhosts {
                label = "Central controller hosts";
                penwidth = 0;
                wrcentralhosts_icon [label = "", image = "computer.png"];
            }

            subgraph cluster_wrcentralbmc {
                label = "Central controller BMC";
                penwidth = 0;
                wrcentralbmc_icon [label = "", image = "network-wired.png"];
            }
        }

        subgraph cluster_wrremote {
            label = "Remote subcloud cluster";

            subgraph cluster_wrremotehosts {
                label = "Remote subcloud hosts";
                penwidth = 0;
                wrremotehosts_icon [label = "", image = "computer.png"];
            }
            
            subgraph cluster_wrremotebmc {
                label = "Remote subcloud BMC";
                penwidth = 0;
                wrremotebmc_icon [label = "", image = "network-wired.png"];
            }
        }
    }

    subgraph cluster_legend {
        label = "Legend";
        penwidth = 1;
        node [shape = "rect", style = filled];
        legend_external [label = "Connections\nto external\nsystems", fillcolor = "chocolate1"];
        legend_wr [label = "Connections\nto Wind River\nplatform", fillcolor = "darkolivegreen3"];
        legend_middleware_external [label = "Connections\nto middleware", fillcolor = "deepskyblue"];
    }

    externalbrowser_icon -> middlewarestacklb_icon [color = "deepskyblue", headlabel = "TCP *:443"];
    externalorchestration_icon -> middlewarestacklb_icon [color = "deepskyblue"];
    middlewarestackapp_icon -> externalvmb_icon [color = "chocolate1", headlabel = "TCP *:6651"];
    externalgitlab_icon -> middlewarestacklb_icon  [color = "deepskyblue"];
    middlewarestackansible_icon -> externalartifactory_icon [color = "chocolate1", headlabel = "TCP *:443"];
    middlewarestackapp_icon -> externalgitlab_icon [color = "chocolate1", headlabel = "TCP *:22"];
    middlewarestackansible_icon -> externalgitlab_icon [color = "chocolate1"];
    middlewarestackansible_icon -> wrcentralhosts_icon [color = "darkolivegreen3", headlabel = "TCP *:22"];
    middlewarestackansible_icon -> wrremotehosts_icon [color = "darkolivegreen3", headlabel = "TCP *:22"];
    middlewarestackapp_icon -> middlewarestackansible_icon [color = "deepskyblue", headlabel = "TCP *:80, *:5555-5561"];
    middlewarestacklb_icon -> externalldap_icon [color = "chocolate1", headlabel = "TCP *:636"];
    middlewarestackansible_icon -> externalinfoblox_icon [color = "chocolate1", headlabel = "TCP *:443"];
    middlewarestackapp_icon -> wrcentralbmc_icon [color = "darkolivegreen3", headlabel = "TCP *:443"];
    middlewarestackapp_icon -> wrremotebmc_icon [color = "darkolivegreen3", headlabel = "TCP *:443"];
    middlewarestacklb_icon -> middlewarestackapp_icon [color = "deepskyblue", headlabel = "TCP *:80"];
    middlewarestackapp_icon -> middlewarestackdatabase_icon [color = "deepskyblue", headlabel = "TCP *:5432"];
    middlewarestacklb_icon -> middlewarestackansible_icon [color = "deepskyblue"];
    wrcentralhosts_icon -> externalartifactory_icon [color = "chocolate1"];
    wrcentralhosts_icon -> wrremotehosts_icon [color = "darkolivegreen3"];
}