Open
Description
[initial suggestion from @Lukasa]
AHC should support a "middleware" concept (ideally once it's a "3-tier library") where a user can supply some middlewares which do common jobs like following redirects, authenticating requests, etc.
Very rough API sketch
final class AuthenticationMiddleware {
// rough sketch, in reality returning just one modified request isn't good enough because with redirects we may
// need more.
func willPerformRequest(_ request: Request, http: HTTPService) -> EventLoopFuture<Request> {
http.client().get("auth/produce/me/an/auth/token").map { token in
var request = request
request.headers[.authorization] = "bearer \(token)"
return request
}
}
}
func makeTwoAuthenticatedHTTPRequests(http: HTTPService, eventLoop: EventLoop, logger: Logger) {
let client = http.client(tlsConfiguration: ...,
eventLoop: eventLoop,
logger: logger,
middlewares: [AuthenticationMiddleware.self])
return client.get("https://foo/bar").flatMap { first in
client.get("https://bar/buz").flatMap { second in
return (first, second)
}
}
}