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/**
* Copyright 2015 Mohiva Organisation (license at mohiva dot com)
*
* 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 com.mohiva.play.silhouette.impl.util
import javax.inject.Inject
import com.mohiva.play.silhouette.api.util.CacheLayer
import play.api.cache.AsyncCacheApi
import scala.concurrent.Future
import scala.concurrent.duration.Duration
import scala.reflect.ClassTag
/**
* Implementation of the cache layer which uses the default Play cache plugin.
*
* @param cacheApi Plays cache API implementation.
*/
class PlayCacheLayer @Inject() (cacheApi: AsyncCacheApi) extends CacheLayer {
/**
* Save a value in cache.
*
* @param key The item key under which the value should be saved.
* @param value The value to save.
* @param expiration Expiration time in seconds (0 second means eternity).
* @return The value saved in cache.
*/
override def save[T](key: String, value: T, expiration: Duration = Duration.Inf): Future[T] = Future.successful {
cacheApi.set(key, value, expiration)
value
}
/**
* Finds a value in the cache.
*
* @param key The key of the item to found.
* @tparam T The type of the object to return.
* @return The found value or None if no value could be found.
*/
override def find[T: ClassTag](key: String): Future[Option[T]] = cacheApi.get[T](key)
/**
* Remove a value from the cache.
*
* @param key Item key.
* @return An empty future to wait for removal.
*/
override def remove(key: String) = Future.successful(cacheApi.remove(key))
}