#73 fp bindgen wasm

[joepio]

#73

fp-bindgen is a tool for creating wasm plugin abstractions. It helps data and functions to pass the memory boundary, from host to plugin.

It's a really cool project. I've been playing with it for a bit and got it working.

Passing Store across the memory boundary

This is probably the hardest part of it all. I want to be able to do things like Store.query or query(store) from within a plugin. To do this, I need a Store available in the plugin. I want to prevent re-creating all the Store methods in the host (e.g. write a query and commit and get_resource function that the host makes available), which is how it is usually done in fp-bindgen examples.

One of the current limitations of fp-bindgen is sending host context to a runtime. When that is solved, I can start working on this issue.

One possible implementation is a new impl Storelike that is similar to Db. Or maybe we can move Db across the memory boundary without too much effort? It is cloned for every request, so it may not be that hard.

PR Checklist:

• [ ] Link to related issue
• [ ] Add changelog entry linking to issue
• [ ] Added tests (if needed)
• [ ] (If new feature) added in description / readme