ROADMAP about openfaas-rstats-templates

[psolymos]

✅ Need to have

Cassic watchdog:

• rstats-base
• rstats-ubuntu
• rstats-minimal

of-watchdog:

• rstats-base-plumber
• rstats-ubuntu-plumber
• rstats-minimal-plumber

Good to have

Rserve and alikes

❗ Rserve branch

Would be nice to have a bare bones solution with Rserve.

❗ RestRserve: issue | branch

• rstats-base-restrserve
• rstats-ubuntu-restrserve
• rstats-minimal-restrserve

Having JSON POST issues.

httpuv and alikes

❌ Rook

Rook serves web apps using R's help server and forces the routes to prepend /custom. There was a hack
to overwrite tools:::httpd but we get locked binding of ‘httpd’ cannot be changed.
The following starts, but R help says 'Only NEWS and URLs under /doc and /library are allowed':

library(Rook)
s <- Rhttpd$new()
s$add(RhttpdApp$new(system.file('exampleApps/RookTestApp.R',package='Rook'), name='httpd'))
s$start(listen='127.0.0.1', port=5000)

✅ httpuv: issue | branch

• rstats-base-httpuv
• rstats-ubuntu-httpuv
• rstats-minimal-httpuv

✅ beakr: issue | branch

A nice minimalist framework, somewhere between httpuv and fiery in terms of complexity.

• rstats-base-beakr
• rstats-ubuntu-beakr
• rstats-minimal-beakr

✅ fiery: issue | branch

• rstats-base-fiery
• rstats-ubuntu-fiery
• rstats-minimal-fiery

❌ OpenCPU: issue | branch

Use local server, as a microservice. GET works, POST has similar JSON issues as RestRserve.

[psolymos]

Lack of websocket connection can be behind the problems identified (openfaas/of-watchdog#20). Closing this for now.

[psolymos]

As it turns out, Rserve, RestRserve and opencpu works fine.
of-watchdog needs http_buffer_req_body="true".
See https://docs.openfaas.com/deployment/troubleshooting/#my-function-gets-a-nil-or-empty-body.
This causes the HTTP request to be buffered in memory, then sent in one shot to the upstream function.