| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * 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 androidx.datastore.core.handlers |
| |
| import androidx.datastore.core.CorruptionException |
| import androidx.datastore.core.CorruptionHandler |
| import java.io.IOException |
| import kotlin.jvm.Throws |
| |
| /** |
| * A corruption handler that attempts to replace the on-disk data with data from produceNewData. |
| * |
| * If the handler successfully replaces the data, the original exception is swallowed. |
| * If the handler encounters an exception when attempting to replace data, the new exception is |
| * added as a suppressed exception to the original exception and the original exception is thrown. |
| * |
| * @param produceNewData The provided callback returns the data to be written to disk. If the |
| * callback fails, nothing will be written to disk. Since the exception will be swallowed after |
| * writing the data, this is a good place to log the exception. |
| */ |
| public actual class ReplaceFileCorruptionHandler<T> constructor( |
| private val produceNewData: (CorruptionException) -> T |
| ) : CorruptionHandler<T> { |
| |
| @Throws(IOException::class) |
| override suspend fun handleCorruption(ex: CorruptionException): T { |
| return produceNewData(ex) |
| } |
| } |
