Modulewai-extra-3.1.18Haskell2010

Network.Wai.Middleware.Select

Dynamically choose between Middlewares

It's useful when you want some Middlewares applied selectively.

Example: do not log health check calls:

import Network.Wai
import Network.Wai.Middleware.HealthCheckEndpoint
import Network.Wai.Middleware.RequestLogger

app' :: Application
app' =
  selectMiddleware (selectMiddlewareExceptRawPathInfo "/_healthz" logStdout)
    $ healthCheck app

1 type
5 values

Packagewai-extra-3.1.18
Exports6
LanguageHaskell2010
LicenceMIT
SourceSelect.hs

Middleware selection

2 declarations

newtypenewtype MiddlewareSelection

Relevant Middleware for a given Request.

Constructors

MiddlewareSelection
- applySelectedMiddleware :: Request -> Maybe Middleware

Instances2Semigroup, Monoid

Semigroup MiddlewareSelectionDefined in wai-extra-3.1.18 · Network.Wai.Middleware.Select
Monoid MiddlewareSelectionDefined in wai-extra-3.1.18 · Network.Wai.Middleware.Select

valueselectMiddleware :: MiddlewareSelection -> Middleware

Create the Middleware dynamically applying MiddlewareSelection.

Helpers

4 declarations

valueselectMiddlewareOn :: (Request -> Bool) -> Middleware -> MiddlewareSelection

Use the Middleware when the predicate holds.

valueselectMiddlewareOnRawPathInfo

Use the Middleware for the given rawPathInfo.

valueselectMiddlewareExceptRawPathInfo

Use the Middleware for all rawPathInfo except then given one.

valuepassthroughMiddleware :: Middleware