Create new DiskCacheDecision class

Reviewed By: oprisnik

Differential Revision: D57825319

fbshipit-source-id: ee59b10ac7eedace00faf4f8dbcdd6b9b7db1ca9

imagepipeline/src/main/java/com/facebook/imagepipeline/producers/DiskCacheDecision.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.imagepipeline.producers
+
+import com.facebook.imagepipeline.cache.BufferedDiskCache
+import com.facebook.imagepipeline.request.ImageRequest
+import com.facebook.imagepipeline.request.ImageRequest.CacheChoice
+
+object DiskCacheDecision {
+
+ @JvmStatic
+ fun chooseDiskCacheForRequest(
+ imageRequest: ImageRequest,
+ smallDiskCache: BufferedDiskCache?,
+ defaultDiskCache: BufferedDiskCache?,
+ dynamicDiskCaches: Map<String, BufferedDiskCache>?
+ ): BufferedDiskCache? {
+ if (imageRequest.cacheChoice == CacheChoice.SMALL) {
+ return smallDiskCache
+ }
+ if (imageRequest.cacheChoice == CacheChoice.DEFAULT) {
+ return defaultDiskCache
+ }
+ if (imageRequest.cacheChoice == CacheChoice.DYNAMIC && dynamicDiskCaches != null) {
+ val diskCacheId = imageRequest.diskCacheId
+ if (diskCacheId != null) {
+ return dynamicDiskCaches[diskCacheId]
+ }
+ }
+ return null
+ }
+
+ internal class DiskCacheDecisionNoDiskCacheChosenException(message: String?) : Exception(message)
+}