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Add current metadata to RestoreCoordinator state

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so we know which backup version we need to expect during restore
This commit is contained in:
Torsten Grote 2021-09-14 17:06:54 +02:00 committed by Chirayu Desai
parent bcb245531c
commit 5523e57fe7
8 changed files with 115 additions and 69 deletions
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2
app/src/main/java/com/stevesoltys/seedvault/restore/RestorableBackup.kt
View file

@ -3,7 +3,7 @@ package com.stevesoltys.seedvault.restore
import com.stevesoltys.seedvault.metadata.BackupMetadata
import com.stevesoltys.seedvault.metadata.PackageMetadataMap
data class RestorableBackup(private val backupMetadata: BackupMetadata) {
data class RestorableBackup(val backupMetadata: BackupMetadata) {
val name: String
get() = backupMetadata.deviceName

1
app/src/main/java/com/stevesoltys/seedvault/restore/RestoreViewModel.kt
View file

@ -148,6 +148,7 @@ internal class RestoreViewModel(
}
override fun onRestorableBackupClicked(restorableBackup: RestorableBackup) {
restoreCoordinator.beforeStartRestore(restorableBackup.backupMetadata)
mChosenRestorableBackup.value = restorableBackup
mDisplayFragment.setEvent(RESTORE_APPS)
}

4
app/src/main/java/com/stevesoltys/seedvault/transport/ConfigurableBackupTransport.kt
View file

@ -204,8 +204,8 @@ class ConfigurableBackupTransport internal constructor(private val context: Cont
return restoreCoordinator.getCurrentRestoreSet()
}
override fun startRestore(token: Long, packages: Array<PackageInfo>): Int {
return restoreCoordinator.startRestore(token, packages)
override fun startRestore(token: Long, packages: Array<PackageInfo>): Int = runBlocking {
restoreCoordinator.startRestore(token, packages)
}
override fun getNextFullRestoreDataChunk(socket: ParcelFileDescriptor): Int = runBlocking {

39
app/src/main/java/com/stevesoltys/seedvault/transport/restore/RestoreCoordinator.kt
View file

@ -2,7 +2,6 @@ package com.stevesoltys.seedvault.transport.restore
import android.app.backup.BackupTransport.TRANSPORT_ERROR
import android.app.backup.BackupTransport.TRANSPORT_OK
import android.app.backup.IBackupManager
import android.app.backup.RestoreDescription
import android.app.backup.RestoreDescription.NO_MORE_PACKAGES
import android.app.backup.RestoreDescription.TYPE_FULL_STREAM
@ -12,7 +11,6 @@ import android.content.Context
import android.content.pm.PackageInfo
import android.os.ParcelFileDescriptor
import android.util.Log
import androidx.collection.LongSparseArray
import com.stevesoltys.seedvault.MAGIC_PACKAGE_MANAGER
import com.stevesoltys.seedvault.R
import com.stevesoltys.seedvault.header.UnsupportedVersionException
@ -31,7 +29,8 @@ private data class RestoreCoordinatorState(
/**
* Optional [PackageInfo] for single package restore, to reduce data needed to read for @pm@
*/
val pmPackageInfo: PackageInfo?
val pmPackageInfo: PackageInfo?,
val backupMetadata: BackupMetadata
) {
var currentPackage: String? = null
}
@ -51,7 +50,7 @@ internal class RestoreCoordinator(
) {
private var state: RestoreCoordinatorState? = null
private var backupMetadata: LongSparseArray<BackupMetadata>? = null
private var backupMetadata: BackupMetadata? = null
private val failedPackages = ArrayList<String>()
suspend fun getAvailableMetadata(): Map<Long, BackupMetadata>? {
@ -113,19 +112,27 @@ internal class RestoreCoordinator(
}
}
/**
* Call this before starting the restore as an optimization to prevent re-fetching metadata.
*/
fun beforeStartRestore(backupMetadata: BackupMetadata) {
this.backupMetadata = backupMetadata
}
/**
* Start restoring application data from backup.
* After calling this function,
* there will be alternate calls to [nextRestorePackage] and [getRestoreData]
* to walk through the actual application data.
*
* @param token A backup token as returned by [getAvailableRestoreSets] or [getCurrentRestoreSet].
* @param token A backup token as returned by [getAvailableRestoreSets]
* or [getCurrentRestoreSet].
* @param packages List of applications to restore (if data is available).
* Application data will be restored in the order given.
* @return One of [TRANSPORT_OK] (OK so far, call [nextRestorePackage])
* or [TRANSPORT_ERROR] (an error occurred, the restore should be aborted and rescheduled).
*/
fun startRestore(token: Long, packages: Array<out PackageInfo>): Int {
suspend fun startRestore(token: Long, packages: Array<out PackageInfo>): Int {
check(state == null) { "Started new restore with existing state: $state" }
Log.i(TAG, "Start restore with ${packages.map { info -> info.packageName }}")
@ -151,7 +158,13 @@ internal class RestoreCoordinator(
packages[1]
} else null
state = RestoreCoordinatorState(token, packages.iterator(), pmPackageInfo)
val metadata = if (backupMetadata?.token == token) {
backupMetadata!! // if token matches, backupMetadata is non-null
} else {
getAvailableMetadata()?.get(token) ?: return TRANSPORT_ERROR
}
state = RestoreCoordinatorState(token, packages.iterator(), pmPackageInfo, metadata)
backupMetadata = null
failedPackages.clear()
return TRANSPORT_OK
}
@ -269,18 +282,6 @@ internal class RestoreCoordinator(
state = null
}
/**
* Call this after calling [IBackupManager.getAvailableRestoreTokenForUser]
* to retrieve additional [BackupMetadata] that is not available in [RestoreSet].
*
* It will also clear the saved metadata, so that subsequent calls will return null.
*/
fun getAndClearBackupMetadata(): LongSparseArray<BackupMetadata>? {
val result = backupMetadata
backupMetadata = null
return result
}
fun isFailedPackage(packageName: String) = packageName in failedPackages
// TODO this is plugin specific, needs to be factored out when supporting different plugins

3
app/src/test/java/com/stevesoltys/seedvault/transport/CoordinatorIntegrationTest.kt
View file

@ -181,6 +181,7 @@ internal class CoordinatorIntegrationTest : TransportTest() {
assertEquals(TRANSPORT_OK, backup.finishBackup())
// start restore
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, arrayOf(packageInfo)))
// find data for K/V backup
@ -251,6 +252,7 @@ internal class CoordinatorIntegrationTest : TransportTest() {
assertEquals(TRANSPORT_OK, backup.finishBackup())
// start restore
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, arrayOf(packageInfo)))
// find data for K/V backup
@ -311,6 +313,7 @@ internal class CoordinatorIntegrationTest : TransportTest() {
assertEquals(TRANSPORT_OK, backup.finishBackup())
// start restore
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, arrayOf(packageInfo)))
// find data only for full backup

8
app/src/test/java/com/stevesoltys/seedvault/transport/TransportTest.kt
View file

@ -10,6 +10,8 @@ import android.util.Log
import com.stevesoltys.seedvault.Clock
import com.stevesoltys.seedvault.MAGIC_PACKAGE_MANAGER
import com.stevesoltys.seedvault.crypto.Crypto
import com.stevesoltys.seedvault.getRandomString
import com.stevesoltys.seedvault.metadata.BackupMetadata
import com.stevesoltys.seedvault.metadata.MetadataManager
import com.stevesoltys.seedvault.settings.SettingsManager
import io.mockk.every
@ -41,6 +43,12 @@ internal abstract class TransportTest {
protected val pmPackageInfo = PackageInfo().apply {
packageName = MAGIC_PACKAGE_MANAGER
}
protected val metadata = BackupMetadata(
token = token,
androidVersion = Random.nextInt(),
androidIncremental = getRandomString(),
deviceName = getRandomString()
)
init {
mockkStatic(Log::class)

71
app/src/test/java/com/stevesoltys/seedvault/transport/restore/RestoreCoordinatorTest.kt
View file

@ -10,7 +10,6 @@ import android.content.pm.PackageInfo
import android.os.ParcelFileDescriptor
import com.stevesoltys.seedvault.coAssertThrows
import com.stevesoltys.seedvault.getRandomString
import com.stevesoltys.seedvault.metadata.BackupMetadata
import com.stevesoltys.seedvault.metadata.EncryptedBackupMetadata
import com.stevesoltys.seedvault.metadata.MetadataReader
import com.stevesoltys.seedvault.metadata.PackageMetadata
@ -26,7 +25,6 @@ import io.mockk.verify
import kotlinx.coroutines.runBlocking
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertNotNull
import org.junit.jupiter.api.Assertions.assertNull
import org.junit.jupiter.api.Assertions.assertThrows
import org.junit.jupiter.api.Assertions.fail
import org.junit.jupiter.api.Test
@ -69,18 +67,13 @@ internal class RestoreCoordinatorTest : TransportTest() {
@Test
fun `getAvailableRestoreSets() builds set from plugin response`() = runBlocking {
val encryptedMetadata = EncryptedBackupMetadata(token, inputStream)
val metadata = BackupMetadata(
token = token,
androidVersion = Random.nextInt(),
androidIncremental = getRandomString(),
deviceName = getRandomString()
)
coEvery { plugin.getAvailableBackups() } returns sequenceOf(
encryptedMetadata,
encryptedMetadata
EncryptedBackupMetadata(token + 1, inputStream)
)
every { metadataReader.readMetadata(inputStream, token) } returns metadata
every { metadataReader.readMetadata(inputStream, token + 1) } returns metadata
every { inputStream.close() } just Runs
val sets = restore.getAvailableRestoreSets() ?: fail()
@ -97,30 +90,62 @@ internal class RestoreCoordinatorTest : TransportTest() {
}
@Test
fun `startRestore() returns OK`() {
fun `startRestore() returns OK`() = runBlocking {
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, packageInfoArray))
}
@Test
fun `startRestore() can not be called twice`() {
fun `startRestore() fetches metadata if missing`() = runBlocking {
coEvery { plugin.getAvailableBackups() } returns sequenceOf(
EncryptedBackupMetadata(token, inputStream),
EncryptedBackupMetadata(token + 1, inputStream)
)
every { metadataReader.readMetadata(inputStream, token) } returns metadata
every { metadataReader.readMetadata(inputStream, token + 1) } returns metadata
every { inputStream.close() } just Runs
assertEquals(TRANSPORT_OK, restore.startRestore(token, packageInfoArray))
}
@Test
fun `startRestore() errors if metadata is not matching token`() = runBlocking {
coEvery { plugin.getAvailableBackups() } returns sequenceOf(
EncryptedBackupMetadata(token + 42, inputStream)
)
every { metadataReader.readMetadata(inputStream, token + 42) } returns metadata
every { inputStream.close() } just Runs
assertEquals(TRANSPORT_ERROR, restore.startRestore(token, packageInfoArray))
}
@Test
fun `startRestore() can not be called twice`() = runBlocking {
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, packageInfoArray))
assertThrows(IllegalStateException::class.javaObjectType) {
runBlocking {
restore.startRestore(token, packageInfoArray)
}
}
Unit
}
@Test
fun `startRestore() can be be called again after restore finished`() {
fun `startRestore() can be be called again after restore finished`() = runBlocking {
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, packageInfoArray))
every { full.hasState() } returns false
restore.finishRestore()
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, packageInfoArray))
}
@Test
fun `startRestore() optimized auto-restore with removed storage shows notification`() {
fun `startRestore() optimized auto-restore with removed storage shows notification`() =
runBlocking {
every { settingsManager.getStorage() } returns storage
every { storage.isUnavailableUsb(context) } returns true
every { metadataManager.getPackageMetadata(packageName) } returns PackageMetadata(42L)
@ -143,10 +168,12 @@ internal class RestoreCoordinatorTest : TransportTest() {
}
@Test
fun `startRestore() optimized auto-restore with available storage shows no notification`() {
fun `startRestore() optimized auto-restore with available storage shows no notification`() =
runBlocking {
every { settingsManager.getStorage() } returns storage
every { storage.isUnavailableUsb(context) } returns false
restore.beforeStartRestore(metadata)
assertEquals(TRANSPORT_OK, restore.startRestore(token, pmPackageInfoArray))
verify(exactly = 0) {
@ -158,7 +185,7 @@ internal class RestoreCoordinatorTest : TransportTest() {
}
@Test
fun `startRestore() with removed storage shows no notification`() {
fun `startRestore() with removed storage shows no notification`() = runBlocking {
every { settingsManager.getStorage() } returns storage
every { storage.isUnavailableUsb(context) } returns true
every { metadataManager.getPackageMetadata(packageName) } returns null
@ -182,6 +209,7 @@ internal class RestoreCoordinatorTest : TransportTest() {
@Test
fun `nextRestorePackage() returns KV description and takes precedence`() = runBlocking {
restore.beforeStartRestore(metadata)
restore.startRestore(token, packageInfoArray)
coEvery { kv.hasDataForPackage(token, packageInfo) } returns true
@ -193,6 +221,7 @@ internal class RestoreCoordinatorTest : TransportTest() {
@Test
fun `nextRestorePackage() returns full description if no KV data found`() = runBlocking {
restore.beforeStartRestore(metadata)
restore.startRestore(token, packageInfoArray)
coEvery { kv.hasDataForPackage(token, packageInfo) } returns false
@ -205,6 +234,7 @@ internal class RestoreCoordinatorTest : TransportTest() {
@Test
fun `nextRestorePackage() returns NO_MORE_PACKAGES if data found`() = runBlocking {
restore.beforeStartRestore(metadata)
restore.startRestore(token, packageInfoArray)
coEvery { kv.hasDataForPackage(token, packageInfo) } returns false
@ -215,6 +245,7 @@ internal class RestoreCoordinatorTest : TransportTest() {
@Test
fun `nextRestorePackage() returns all packages from startRestore()`() = runBlocking {
restore.beforeStartRestore(metadata)
restore.startRestore(token, packageInfoArray2)
coEvery { kv.hasDataForPackage(token, packageInfo) } returns true
@ -234,22 +265,24 @@ internal class RestoreCoordinatorTest : TransportTest() {
}
@Test
fun `when kv#hasDataForPackage() throws return null`() = runBlocking {
fun `when kv#hasDataForPackage() throws, it tries next package`() = runBlocking {
restore.beforeStartRestore(metadata)
restore.startRestore(token, packageInfoArray)
coEvery { kv.hasDataForPackage(token, packageInfo) } throws IOException()
assertNull(restore.nextRestorePackage())
assertEquals(NO_MORE_PACKAGES, restore.nextRestorePackage())
}
@Test
fun `when full#hasDataForPackage() throws return null`() = runBlocking {
fun `when full#hasDataForPackage() throws, it tries next package`() = runBlocking {
restore.beforeStartRestore(metadata)
restore.startRestore(token, packageInfoArray)
coEvery { kv.hasDataForPackage(token, packageInfo) } returns false
coEvery { full.hasDataForPackage(token, packageInfo) } throws IOException()
assertNull(restore.nextRestorePackage())
assertEquals(NO_MORE_PACKAGES, restore.nextRestorePackage())
}
@Test

2
app/src/test/java/com/stevesoltys/seedvault/transport/restore/RestoreV0IntegrationTest.kt
View file

@ -61,7 +61,7 @@ internal class RestoreV0IntegrationTest : TransportTest() {
kvRestore,
fullRestore,
metadataReader
)
).apply { beforeStartRestore(metadata) }
private val fileDescriptor = mockk<ParcelFileDescriptor>(relaxed = true)
private val appData = ("562AB665C3543120FC794D7CDA3AC18E5959235A4D" +