private Cursor logJson(Level level, String message) {
        Cursor entry = logroot.addObject();
        entry.setLong("time", System.currentTimeMillis());
        entry.setString("level", level.getName());
        entry.setString("message", message);
        return entry;
    }
A {@link DeployLogger} which stores messages in a {@link Slime} tree, and holds a tenant and application name.

@author Ulf Lilleengen
configserver/src/main/java/com/yahoo/vespa/config/server/deploy/DeployHandlerLogger.java