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Merge pull request #626 from ultrasonic/cachecleaner 

Migrate CacheCleaner to Coroutine
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Nite 2021-11-18 18:17:30 +01:00 committed by GitHub
parent 97eb753413 00cd4fce44
commit 45e9728e0f
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1 changed files with 58 additions and 75 deletions
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133
ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/CacheCleaner.kt
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@ -1,10 +1,13 @@
package org.moire.ultrasonic.util
import android.os.AsyncTask
import android.os.StatFs
import java.io.File
import java.util.ArrayList
import java.util.HashSet
import kotlinx.coroutines.CoroutineExceptionHandler
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import org.koin.java.KoinJavaComponent.inject
import org.moire.ultrasonic.data.ActiveServerProvider
import org.moire.ultrasonic.domain.Playlist
@ -22,105 +25,85 @@ import timber.log.Timber
/**
* Responsible for cleaning up files from the offline download cache on the filesystem.
*/
class CacheCleaner {
class CacheCleaner : CoroutineScope by CoroutineScope(Dispatchers.IO) {
private fun exceptionHandler(tag: String): CoroutineExceptionHandler {
return CoroutineExceptionHandler { _, exception ->
Timber.w(exception, "Exception in CacheCleaner.$tag")
}
}
fun clean() {
try {
BackgroundCleanup().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
} catch (all: Exception) {
// If an exception is thrown, assume we execute correctly the next time
Timber.w(all, "Exception in CacheCleaner.clean")
launch(exceptionHandler("clean")) {
backgroundCleanup()
}
}
fun cleanSpace() {
try {
BackgroundSpaceCleanup().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
} catch (all: Exception) {
// If an exception is thrown, assume we execute correctly the next time
Timber.w(all, "Exception in CacheCleaner.cleanSpace")
launch(exceptionHandler("cleanSpace")) {
backgroundSpaceCleanup()
}
}
fun cleanPlaylists(playlists: List<Playlist>) {
launch(exceptionHandler("cleanPlaylists")) {
backgroundPlaylistsCleanup(playlists)
}
}
private fun backgroundCleanup() {
try {
BackgroundPlaylistsCleanup().executeOnExecutor(
AsyncTask.THREAD_POOL_EXECUTOR,
playlists
)
} catch (all: Exception) {
// If an exception is thrown, assume we execute correctly the next time
Timber.w(all, "Exception in CacheCleaner.cleanPlaylists")
val files: MutableList<File> = ArrayList()
val dirs: MutableList<File> = ArrayList()
findCandidatesForDeletion(musicDirectory, files, dirs)
sortByAscendingModificationTime(files)
val filesToNotDelete = findFilesToNotDelete()
deleteFiles(files, filesToNotDelete, getMinimumDelete(files), true)
deleteEmptyDirs(dirs, filesToNotDelete)
} catch (all: RuntimeException) {
Timber.e(all, "Error in cache cleaning.")
}
}
private class BackgroundCleanup : AsyncTask<Void?, Void?, Void?>() {
override fun doInBackground(vararg params: Void?): Void? {
try {
Thread.currentThread().name = "BackgroundCleanup"
private fun backgroundSpaceCleanup() {
try {
val files: MutableList<File> = ArrayList()
val dirs: MutableList<File> = ArrayList()
val files: MutableList<File> = ArrayList()
val dirs: MutableList<File> = ArrayList()
findCandidatesForDeletion(musicDirectory, files, dirs)
sortByAscendingModificationTime(files)
val filesToNotDelete = findFilesToNotDelete()
deleteFiles(files, filesToNotDelete, getMinimumDelete(files), true)
deleteEmptyDirs(dirs, filesToNotDelete)
} catch (all: RuntimeException) {
Timber.e(all, "Error in cache cleaning.")
}
return null
}
}
private class BackgroundSpaceCleanup : AsyncTask<Void?, Void?, Void?>() {
override fun doInBackground(vararg params: Void?): Void? {
try {
Thread.currentThread().name = "BackgroundSpaceCleanup"
val files: MutableList<File> = ArrayList()
val dirs: MutableList<File> = ArrayList()
findCandidatesForDeletion(musicDirectory, files, dirs)
val bytesToDelete = getMinimumDelete(files)
if (bytesToDelete <= 0L) return null
findCandidatesForDeletion(musicDirectory, files, dirs)
val bytesToDelete = getMinimumDelete(files)
if (bytesToDelete > 0L) {
sortByAscendingModificationTime(files)
val filesToNotDelete = findFilesToNotDelete()
deleteFiles(files, filesToNotDelete, bytesToDelete, false)
} catch (all: RuntimeException) {
Timber.e(all, "Error in cache cleaning.")
}
return null
} catch (all: RuntimeException) {
Timber.e(all, "Error in cache cleaning.")
}
}
private class BackgroundPlaylistsCleanup : AsyncTask<List<Playlist>, Void?, Void?>() {
override fun doInBackground(vararg params: List<Playlist>): Void? {
try {
val activeServerProvider = inject<ActiveServerProvider>(
ActiveServerProvider::class.java
)
private fun backgroundPlaylistsCleanup(vararg params: List<Playlist>) {
try {
val activeServerProvider = inject<ActiveServerProvider>(
ActiveServerProvider::class.java
)
Thread.currentThread().name = "BackgroundPlaylistsCleanup"
val server = activeServerProvider.value.getActiveServer().name
val playlistFiles = listFiles(getPlaylistDirectory(server))
val playlists = params[0]
val server = activeServerProvider.value.getActiveServer().name
val playlistFiles = listFiles(getPlaylistDirectory(server))
val playlists = params[0]
for ((_, name) in playlists) {
playlistFiles.remove(getPlaylistFile(server, name))
}
for (playlist in playlistFiles) {
playlist.delete()
}
} catch (all: RuntimeException) {
Timber.e(all, "Error in playlist cache cleaning.")
for ((_, name) in playlists) {
playlistFiles.remove(getPlaylistFile(server, name))
}
return null
for (playlist in playlistFiles) {
playlist.delete()
}
} catch (all: RuntimeException) {
Timber.e(all, "Error in playlist cache cleaning.")
}
}