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/*
* Copyright 2016 Coursera Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.coursera.naptime.access.combiner
import org.coursera.common.concurrent.Futures
import org.coursera.naptime.NaptimeActionException
import org.coursera.naptime.access.HeaderAccessControl
import play.api.mvc.RequestHeader
import scala.concurrent.ExecutionContext
import scala.concurrent.Future
/**
* Allows the request if all access controls allow it.
*/
private[access] trait And {
/** See [[And]]. */
def and[A, B](
controlA: HeaderAccessControl[A],
controlB: HeaderAccessControl[B]):
HeaderAccessControl[(A, B)] = {
new HeaderAccessControl[(A, B)] {
override def run(requestHeader: RequestHeader)(implicit ec: ExecutionContext):
Future[Either[NaptimeActionException, (A, B)]] = {
val futureA = Futures.safelyCall(controlA.run(requestHeader))
val futureB = Futures.safelyCall(controlB.run(requestHeader))
for {
resultA <- futureA
resultB <- futureB
} yield {
(resultA, resultB) match {
case (Right(authenticationA), Right(authenticationB)) =>
Right((authenticationA, authenticationB))
case _ =>
List(resultA, resultB)
.collectFirst { case Left(error) => Left(error) }
.head
}
}
}
override private[naptime] def check(authInfo: (A, B)): Either[NaptimeActionException, (A, B)] = {
(controlA.check(authInfo._1), controlB.check(authInfo._2)) match {
case (Right(resultA), Right(resultB)) => Right((resultA, resultB))
case (Left(err), _) => Left(err)
case (_, Left(err)) => Left(err)
}
}
}
}
/** See [[And]]. */
def and[A, B, C](
controlA: HeaderAccessControl[A],
controlB: HeaderAccessControl[B],
controlC: HeaderAccessControl[C]):
HeaderAccessControl[(A, B, C)] = {
new HeaderAccessControl[(A, B, C)] {
override def run(requestHeader: RequestHeader)(implicit ec: ExecutionContext):
Future[Either[NaptimeActionException, (A, B, C)]] = {
val futureA = Futures.safelyCall(controlA.run(requestHeader))
val futureB = Futures.safelyCall(controlB.run(requestHeader))
val futureC = Futures.safelyCall(controlC.run(requestHeader))
for {
resultA <- futureA
resultB <- futureB
resultC <- futureC
} yield {
(resultA, resultB, resultC) match {
case (Right(authenticationA), Right(authenticationB), Right(authenticationC)) =>
Right((authenticationA, authenticationB, authenticationC))
case _ =>
List(resultA, resultB)
.collectFirst { case Left(error) => Left(error) }
.head
}
}
}
override private[naptime] def check(authInfo: (A, B, C)): Either[NaptimeActionException, (A, B, C)] = {
(controlA.check(authInfo._1), controlB.check(authInfo._2), controlC.check(authInfo._3)) match {
case (Right(a), Right(b), Right(c)) => Right((a, b, c))
case (Left(err), _, _) => Left(err)
case (_, Left(err), _) => Left(err)
case (_, _, Left(err)) => Left(err)
}
}
}
}
}
