recoverRejections
recoverRejections
シグネチャ
説明
低レベルディレクティブ - 低レベルで作業する必要があると確信しない限り、リジェクションハンドラを構築するためのよりよいDSLを提供する:ref: `-handleRejections-`ディレクティブを試してみてください。
内部ルートからのリジェクションを``immutable.Seq[Rejection] ⇒ RouteResult``関数によって変換します。``RouteResult``は``Complete(HttpResponse(...))``かまたは``Rejected(rejections)``です。
注釈
どのようにリジェクションがはたらくのかを知るには、このドキュメントの:ref: `rejections-scala`セクションを読んでください。
例
val authRejectionsToNothingToSeeHere = recoverRejections { rejections =>
if (rejections.exists(_.isInstanceOf[AuthenticationFailedRejection]))
Complete(HttpResponse(entity = "Nothing to see here, move along."))
else if (rejections == Nil) // see "Empty Rejections" for more details
Complete(HttpResponse(StatusCodes.NotFound, entity = "Literally nothing to see here."))
else
Rejected(rejections)
}
val neverAuth: Authenticator[String] = creds => None
val alwaysAuth: Authenticator[String] = creds => Some("id")
val route =
authRejectionsToNothingToSeeHere {
pathPrefix("auth") {
path("never") {
authenticateBasic("my-realm", neverAuth) { user =>
complete("Welcome to the bat-cave!")
}
} ~
path("always") {
authenticateBasic("my-realm", alwaysAuth) { user =>
complete("Welcome to the secret place!")
}
}
}
}
// tests:
Get("/auth/never") ~> route ~> check {
status shouldEqual StatusCodes.OK
responseAs[String] shouldEqual "Nothing to see here, move along."
}
Get("/auth/always") ~> route ~> check {
status shouldEqual StatusCodes.OK
responseAs[String] shouldEqual "Welcome to the secret place!"
}
Get("/auth/does_not_exist") ~> route ~> check {
status shouldEqual StatusCodes.NotFound
responseAs[String] shouldEqual "Literally nothing to see here."
}
val authRejectionsToNothingToSeeHere = recoverRejectionsWith { rejections =>
Future {
// imagine checking rejections takes a longer time:
if (rejections.exists(_.isInstanceOf[AuthenticationFailedRejection]))
Complete(HttpResponse(entity = "Nothing to see here, move along."))
else
Rejected(rejections)
}
}
val neverAuth: Authenticator[String] = creds => None
val route =
authRejectionsToNothingToSeeHere {
pathPrefix("auth") {
path("never") {
authenticateBasic("my-realm", neverAuth) { user =>
complete("Welcome to the bat-cave!")
}
}
}
}
// tests:
Get("/auth/never") ~> route ~> check {
status shouldEqual StatusCodes.OK
responseAs[String] shouldEqual "Nothing to see here, move along."
}
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