you can add an api for dot

[epiphyllum]

val inputStream = dot.getInputStream

so that it can be easily used for browser rendering in many scala web framework or lib

[Ldpe2G]

@epiphyllum thanks for your advise, but I am not sure what you mean. Could you provide a more
specific details of how will you use this api?

[epiphyllum]

for example:

when browser initiate a request GET /give/me/graph/of/:flow_id.png to my webserver, webserver will first load data from database using :flow_id, then webserver should create a Digraph class provided by you, and render an image to the browser

val flowConfig = loadConfigFromDB(flowId)
val flowDot = new Digraph(comment = "The Flow Graph")
val inputStream = flowDot.getInputStream

val httpResponse = new HTTPResponse(inputStream, `Content-Type:image/png`)

blah blah...

[epiphyllum]

this project provide an DSL wrapper for graphviz command. it is a good start.
I think it is also can be used in the web for image rendering where performance is not some critical

[Ldpe2G]

Thanks for your detailed explaination. I will take a look into this.