How to use this tool programmatically?

[guozhangwang]

Hey @zz85 thanks for this great tool! I've been using it for quite some time and it is definitely a big saver.

A qq for you: what should I do if I want to use this tool programmatically? Say if I want to dump a file (pdf, jpeg, whatever) from my Java code that contains the drawings of my Topology.describe() string?

[focusaurus]

I'm also interested in toolchain ideas here. Here's what I'm planning to do to quickly be able to build png images.

1. I have some clojure code that can spit out the topology description text syntax
2. Using the javascript from here, I wrote a small node wrapper that reads topology description on stdin and spits out dot syntax
3. I'm then using graphviz (via a docker container I found on docker hub) to convert the .dot graphviz text files to .png images. These aren't as nice as the rough.js ones the web app builds, but they look OK.