# Render with: `dot -T png -o zincati-actors.png zincati-actors.dot`

digraph actors_messages {
    newrank = true;
    fontsize=11;
    node [shape=box, style="rounded", color=lightgrey; fontname="Arial"; fontsize=11;];
    edge[arrowhead="vee"; fontcolor=darkgoldenrod; fontsize=8;];


    subgraph cluster_metrics_service {
        label = "Async Actor:\nmetrics service";
        style = dashed;
        color = deepskyblue;

        ConnectionStream [label=<StreamHandler<br/>&lt;<b>Connection</b>&gt;>;];
        
        # Invisble placeholders.
        InvisMetricsClient:s [style=invis];
        InvisBottomMetrics [style=invis];
        ConnectionStream:s -> InvisBottomMetrics:n [style=invis];
    }

    subgraph cluster_dbus_server {
        label = "Sync Actor:\nD-Bus server";
        style = dashed;
        color = deepskyblue;

        SyncLastRefersh [label="sync fn\nlast_refresh_time()"];

        # Invisble placeholders.
        InvisBottomDbus [style=invis];
    }

    subgraph cluster_update_agent {
        label = "Async Actor:\nupdate agent";
        style = dashed;
        color = deepskyblue;

        AsyncLocalDeployments [label="async fn\nlocal_deployments()"];
        AsyncAttemptDeploy [label="async fn\nattempt_deploy()"];
        AsyncFinalizeDeployment [label="async fn\nfinalize_deployment()"];
        RefreshTick [label=<Handler<br/>&lt;<b>RefreshTick</b>&gt;>];
        LastRefresh [label=<Handler<br/>&lt;<b>LastRefresh</b>&gt;>]
        
    }
    
    subgraph cluster_rpm_ostree_client {
        label = "Sync Actor:\nrpm-ostree client";
        style = dashed;
        color = deepskyblue;

        QueryLocalDeployments [label=<Handler<br/>&lt;<b>QueryLocalDeployments</b>&gt;>];
        StageDeployment [label=<Handler<br/>&lt;<b>StageDeployment</b>&gt;>];
        FinalizeDeployment [label=<Handler<br/>&lt;<b>FinalizeDeployment</b>&gt;>];
       
        # Invisble placeholders.
        QueryLocalDeployments:s -> StageDeployment:n [style=invis];
        StageDeployment:s -> FinalizeDeployment:n [style=invis];
    }
    
    # Organize nodes in rows.
    { rank = same; InvisMetricsClient; SyncLastRefersh; LastRefresh; AsyncLocalDeployments; QueryLocalDeployments }
    { rank = same; ConnectionStream; RefreshTick; AsyncAttemptDeploy; StageDeployment }
    { rank = same; InvisBottomMetrics; InvisBottomDbus; AsyncFinalizeDeployment; FinalizeDeployment; }

    # Edges.
    InvisMetricsClient:s -> ConnectionStream:n [label="Metrics\nsocket\n connection"];
    RefreshTick:ne -> RefreshTick:se;
    { rank = same; SyncLastRefersh:ne -> LastRefresh:nw; LastRefresh:sw -> SyncLastRefersh:se; }
    { rank = same; AsyncLocalDeployments:ne -> QueryLocalDeployments:nw; QueryLocalDeployments:sw -> AsyncLocalDeployments:se; }
    { rank = same; AsyncAttemptDeploy:ne -> StageDeployment:nw; StageDeployment:sw -> AsyncAttemptDeploy:se; }
    { rank = same; AsyncFinalizeDeployment:ne -> FinalizeDeployment:nw; FinalizeDeployment:sw -> AsyncFinalizeDeployment:se; }
}