georgeyk/loafer

seqdiag {
    Provider; Dispatcher; Route; Handler; "Error Handler";
    default_fontsize = 12;

    Dispatcher -> Provider [label = "ask messages"];
    Dispatcher <-- Provider [label = "return messages"];
    Dispatcher -> Route [label = "ask for message delivery"];
    Route -> Route [label = "apply message translation", rightnote = "in case of error, follow 'error processing'"];
    Route <-- Route;
    Route -> Handler [label = "deliver message"];
    Route <-- Handler [label = "confirm message"];
    Route <-- Handler [label = "error", color = "red"];
    Route -> "Error Handler" [label = "error processing", color = "red"];
    Route <-- "Error Handler" [label = "message confirmation from error", color = "red"];
    Dispatcher <-- Route [label = "message confirmation"];
    Dispatcher -> Provider [label = "confirm message (deletion)"];
    Dispatcher <-- Provider
}