[BUG] slow to serve static file and swagger UI must use CDN

this bug report was ported from [https://github.com/rexyai/RestRserve/issues/196] @s-u @dselivanov

I had an issue when using RestRServe to serve static files at the same time, for example, js and css script, some files response errors, for alternative, we currently using cdn.

For example:

api$add_static(
  path = "/statics/",
  file_path = "statics/",
  content_type = NULL
)

Another issue also happens on swagger UI, to rendering the html template and slow to load when cdn set to false (actually on windows cant serve static files, seem work on linux, seems faster when using cdn on linux)

i also try the swagger ui, and i see more faster rendering when using jinjar packages rather than using the built-in function. Sometimes on portrainer docker deployment, the swagger built-in function return "404 Not Found".

i try this code:

# ---- /swagger ----

api$add_static(
  path = "/swagger/openapi.yaml",
  file_path = "openapi.yaml",
  content_type = "application/x-yaml"
)

api$add_static(
  path = "/swagger/",
  file_path = "/swagger/",
  content_type = NULL
)

swaggerVAR <- list(path_swagger_assets = paste0("https://",cdnURL,"/swagger"),
                   path_openapi = "/swagger/openapi.yaml")
swaggerHTML <- jinjar::render(parse_template(fs::path("swagger/index.html")), !!!swaggerVAR)
api$add_get(
  path = "/swagger",
  FUN = function(request, response) {
    response$set_content_type("text/html; charset=utf-8")
    response$set_body(swaggerHTML)
  }
)

thank you in advanced

R version: 4.2.2 Platforms tested: Windows 11, Docker Offline WSL, Docker Online Portrainer

rexyai / RestRserve

[BUG] slow to serve static file and swagger UI must use CDN #197