eliasdb/examples/chat/res/scripts/main.ecal

/*
 Modify all stored nodes which have a message with a timestamp.
 */
sink AddNodeTimestamp
    kindmatch ["db.node.store", "db.node.update"]
    priority 0
{
    log("Node Event: ", event)

    if event.state.node.message != NULL and event.state.node.ts == NULL {
        try {
            log("store node")
            event.state.node.ts := now()
            db.storeNode(event.state.part, event.state.node)
        } except e {
            error(e)
        } otherwise {
            db.raiseGraphEventHandled()
        }
    }
}