Store and show the size of app backups

app/src/main/java/com/stevesoltys/seedvault/metadata/Metadata.kt

@@ -74,6 +74,7 @@ data class PackageMetadata(
     internal var time: Long = 0L,
     internal var state: PackageState = UNKNOWN_ERROR,
     internal var backupType: BackupType? = null,
+    internal var size: Long? = null,
     internal val system: Boolean = false,
     internal val version: Long? = null,
     internal val installer: String? = null,
@@ -97,6 +98,7 @@ enum class BackupType { KV, FULL }
 internal const val JSON_PACKAGE_TIME = "time"
 internal const val JSON_PACKAGE_BACKUP_TYPE = "backupType"
 internal const val JSON_PACKAGE_STATE = "state"
+internal const val JSON_PACKAGE_SIZE = "size"
 internal const val JSON_PACKAGE_SYSTEM = "system"
 internal const val JSON_PACKAGE_VERSION = "version"
 internal const val JSON_PACKAGE_INSTALLER = "installer"

app/src/main/java/com/stevesoltys/seedvault/metadata/MetadataManager.kt

@@ -131,6 +131,7 @@ internal class MetadataManager(
     fun onPackageBackedUp(
         packageInfo: PackageInfo,
         type: BackupType,
+        size: Long?,
         metadataOutputStream: OutputStream,
     ) {
         val packageName = packageInfo.packageName
@@ -143,12 +144,15 @@ internal class MetadataManager(
                 metadata.packageMetadataMap[packageName]!!.time = now
                 metadata.packageMetadataMap[packageName]!!.state = APK_AND_DATA
                 metadata.packageMetadataMap[packageName]!!.backupType = type
+                // don't override a previous K/V size, if there were no K/V changes
+                if (size != null) metadata.packageMetadataMap[packageName]!!.size = size
             } else {
                 metadata.packageMetadataMap[packageName] = PackageMetadata(
                     time = now,
                     state = APK_AND_DATA,
                     backupType = type,
-                    system = packageInfo.isSystemApp()
+                    size = size,
+                    system = packageInfo.isSystemApp(),
                 )
             }
         }

app/src/main/java/com/stevesoltys/seedvault/metadata/MetadataReader.kt

@@ -120,6 +120,7 @@ internal class MetadataReaderImpl(private val crypto: Crypto) : MetadataReader {
                     // because when only backing up the APK for example, there's no type
                     else -> null
                 }
+                val pSize = p.optLong(JSON_PACKAGE_SIZE, -1L)
                 val pSystem = p.optBoolean(JSON_PACKAGE_SYSTEM, false)
                 val pVersion = p.optLong(JSON_PACKAGE_VERSION, 0L)
                 val pInstaller = p.optString(JSON_PACKAGE_INSTALLER)
@@ -136,6 +137,7 @@ internal class MetadataReaderImpl(private val crypto: Crypto) : MetadataReader {
                     time = p.getLong(JSON_PACKAGE_TIME),
                     state = pState,
                     backupType = pBackupType,
+                    size = if (pSize < 0L) null else pSize,
                     system = pSystem,
                     version = if (pVersion == 0L) null else pVersion,
                     installer = if (pInstaller == "") null else pInstaller,

app/src/main/java/com/stevesoltys/seedvault/metadata/MetadataWriter.kt

@@ -49,6 +49,9 @@ internal class MetadataWriterImpl(private val crypto: Crypto) : MetadataWriter {
                 if (packageMetadata.backupType != null) {
                     put(JSON_PACKAGE_BACKUP_TYPE, packageMetadata.backupType!!.name)
                 }
+                if (packageMetadata.size != null) {
+                    put(JSON_PACKAGE_SIZE, packageMetadata.size)
+                }
                 if (packageMetadata.system) {
                     put(JSON_PACKAGE_SYSTEM, packageMetadata.system)
                 }

app/src/main/java/com/stevesoltys/seedvault/settings/AppListRetriever.kt

@@ -38,6 +38,7 @@ data class AppStatus(
     val icon: Drawable,
     val name: String,
     val time: Long,
+    val size: Long?,
     val status: AppBackupState,
     val isSpecial: Boolean = false,
 ) : AppListItem()
@@ -87,6 +88,7 @@ internal class AppListRetriever(
                 icon = getIcon(packageName),
                 name = context.getString(stringId),
                 time = metadata?.time ?: 0,
+                size = metadata?.size,
                 status = status,
                 isSpecial = true
             )
@@ -111,6 +113,7 @@ internal class AppListRetriever(
                 icon = getIcon(it.packageName),
                 name = getAppName(context, it.packageName).toString(),
                 time = time,
+                size = metadata?.size,
                 status = status
             )
         }.sortedBy { it.name.lowercase(locale) }
@@ -125,6 +128,7 @@ internal class AppListRetriever(
                 icon = getIcon(it.packageName),
                 name = getAppName(context, it.packageName).toString(),
                 time = 0,
+                size = null,
                 status = FAILED_NOT_ALLOWED
             )
         }.sortedBy { it.name.lowercase(locale) }

app/src/main/java/com/stevesoltys/seedvault/settings/AppStatusAdapter.kt

@@ -3,6 +3,7 @@ package com.stevesoltys.seedvault.settings
 import android.content.Intent
 import android.net.Uri
 import android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS
+import android.text.format.Formatter.formatShortFileSize
 import android.view.LayoutInflater
 import android.view.View
 import android.view.View.GONE
@@ -116,7 +117,12 @@ internal class AppStatusAdapter(private val toggleListener: AppStatusToggleListe
                     setState(item.status, false)
                 }
                 if (item.status == SUCCEEDED) {
-                    appInfo.text = item.time.toRelativeTime(context)
+                    appInfo.text = if (item.size == null) {
+                        item.time.toRelativeTime(context)
+                    } else {
+                        item.time.toRelativeTime(context).toString() +
+                            " (${formatShortFileSize(v.context, item.size)})"
+                    }
                     appInfo.visibility = VISIBLE
                 }
                 switchView.visibility = INVISIBLE

app/src/main/java/com/stevesoltys/seedvault/transport/backup/BackupCoordinator.kt

@@ -363,14 +363,15 @@ internal class BackupCoordinator(
             // getCurrentPackage() not-null because we have state, call before finishing
             val packageInfo = kv.getCurrentPackage()!!
             val packageName = packageInfo.packageName
+            val size = kv.getCurrentSize()
             // tell K/V backup to finish
             var result = kv.finishBackup()
             if (result == TRANSPORT_OK) {
                 val isPmBackup = packageName == MAGIC_PACKAGE_MANAGER
                 // call onPackageBackedUp for @pm@ only if we can do backups right now
                 if (!isPmBackup || settingsManager.canDoBackupNow()) {
                     try {
-                        onPackageBackedUp(packageInfo, BackupType.KV)
+                        onPackageBackedUp(packageInfo, BackupType.KV, size)
                     } catch (e: Exception) {
                         Log.e(TAG, "Error calling onPackageBackedUp for $packageName", e)
                         result = TRANSPORT_PACKAGE_REJECTED
@@ -396,10 +397,11 @@ internal class BackupCoordinator(
             // getCurrentPackage() not-null because we have state
             val packageInfo = full.getCurrentPackage()!!
             val packageName = packageInfo.packageName
+            val size = full.getCurrentSize()
             // tell full backup to finish
             var result = full.finishBackup()
             try {
-                onPackageBackedUp(packageInfo, BackupType.FULL)
+                onPackageBackedUp(packageInfo, BackupType.FULL, size)
             } catch (e: Exception) {
                 Log.e(TAG, "Error calling onPackageBackedUp for $packageName", e)
                 result = TRANSPORT_PACKAGE_REJECTED
@@ -470,9 +472,9 @@ internal class BackupCoordinator(
         }
     }
 
-    private suspend fun onPackageBackedUp(packageInfo: PackageInfo, type: BackupType) {
+    private suspend fun onPackageBackedUp(packageInfo: PackageInfo, type: BackupType, size: Long?) {
         plugin.getMetadataOutputStream().use {
-            metadataManager.onPackageBackedUp(packageInfo, type, it)
+            metadataManager.onPackageBackedUp(packageInfo, type, size, it)
         }
     }
 

app/src/main/java/com/stevesoltys/seedvault/transport/backup/FullBackup.kt

@@ -51,6 +51,8 @@ internal class FullBackup(
 
     fun getCurrentPackage() = state?.packageInfo
 
+    fun getCurrentSize() = state?.size
+
     fun getQuota(): Long {
         return if (settingsManager.isQuotaUnlimited()) Long.MAX_VALUE else DEFAULT_QUOTA_FULL_BACKUP
     }
@@ -190,7 +192,7 @@ internal class FullBackup(
     }
 
     fun finishBackup(): Int {
-        Log.i(TAG, "Finish full backup of ${state!!.packageName}.")
+        Log.i(TAG, "Finish full backup of ${state!!.packageName}. Wrote ${state!!.size} bytes")
         return clearState()
     }
 

app/src/main/java/com/stevesoltys/seedvault/transport/backup/KVBackup.kt

@@ -46,6 +46,10 @@ internal class KVBackup(
 
     fun getCurrentPackage() = state?.packageInfo
 
+    fun getCurrentSize() = getCurrentPackage()?.let {
+        dbManager.getDbSize(it.packageName)
+    }
+
     fun getQuota(): Long = if (settingsManager.isQuotaUnlimited()) {
         Long.MAX_VALUE
     } else {
@@ -252,7 +256,7 @@ internal class KVBackup(
                 }
             }
         }
-        Log.d(TAG, "Uploaded db file for $packageName")
+        Log.d(TAG, "Uploaded db file for $packageName.")
     }
 
     private class KVOperation(

app/src/main/java/com/stevesoltys/seedvault/transport/backup/KVDbManager.kt

@@ -29,6 +29,11 @@ interface KvDbManager {
      * Use only for backup.
      */
     fun existsDb(packageName: String): Boolean
+
+    /**
+     * Returns the current size of the DB in bytes or null, if no DB exists.
+     */
+    fun getDbSize(packageName: String): Long?
     fun deleteDb(packageName: String, isRestore: Boolean = false): Boolean
 }
 
@@ -59,6 +64,11 @@ class KvDbManagerImpl(private val context: Context) : KvDbManager {
         return getDbFile(packageName).isFile
     }
 
+    override fun getDbSize(packageName: String): Long? {
+        val file = getDbFile(packageName)
+        return if (file.isFile) file.length() else null
+    }
+
     override fun deleteDb(packageName: String, isRestore: Boolean): Boolean {
         return getDbFile(packageName, isRestore).delete()
     }

app/src/test/java/com/stevesoltys/seedvault/metadata/MetadataManagerTest.kt

@@ -249,17 +249,23 @@ class MetadataManagerTest {
             time = time,
             packageMetadataMap = PackageMetadataMap() // otherwise this isn't copied, but referenced
         )
+        val size = Random.nextLong()
         val packageMetadata = PackageMetadata(time)
         updatedMetadata.packageMetadataMap[packageName] = packageMetadata
 
         expectReadFromCache()
         every { clock.time() } returns time
         expectModifyMetadata(initialMetadata)
 
-        manager.onPackageBackedUp(packageInfo, BackupType.FULL, storageOutputStream)
+        manager.onPackageBackedUp(packageInfo, BackupType.FULL, size, storageOutputStream)
 
         assertEquals(
-            packageMetadata.copy(state = APK_AND_DATA, backupType = BackupType.FULL, system = true),
+            packageMetadata.copy(
+                state = APK_AND_DATA,
+                backupType = BackupType.FULL,
+                size = size,
+                system = true,
+            ),
             manager.getPackageMetadata(packageName)
         )
         assertEquals(time, manager.getLastBackupTime())
@@ -270,6 +276,7 @@ class MetadataManagerTest {
             cacheOutputStream.close()
         }
     }
+
     @Test
     fun `test onPackageBackedUp() with D2D enabled`() {
         expectReadFromCache()
@@ -278,7 +285,7 @@ class MetadataManagerTest {
 
         every { settingsManager.d2dBackupsEnabled() } returns true
 
-        manager.onPackageBackedUp(packageInfo, BackupType.FULL, storageOutputStream)
+        manager.onPackageBackedUp(packageInfo, BackupType.FULL, 0L, storageOutputStream)
         assertTrue(initialMetadata.d2dBackup)
 
         verify {
@@ -290,19 +297,20 @@ class MetadataManagerTest {
     @Test
     fun `test onPackageBackedUp() fails to write to storage`() {
         val updateTime = time + 1
+        val size = Random.nextLong()
         val updatedMetadata = initialMetadata.copy(
             time = updateTime,
             packageMetadataMap = PackageMetadataMap() // otherwise this isn't copied, but referenced
         )
         updatedMetadata.packageMetadataMap[packageName] =
-            PackageMetadata(updateTime, APK_AND_DATA, BackupType.KV)
+            PackageMetadata(updateTime, APK_AND_DATA, BackupType.KV, size)
 
         expectReadFromCache()
         every { clock.time() } returns updateTime
         every { metadataWriter.write(updatedMetadata, storageOutputStream) } throws IOException()
 
         try {
-            manager.onPackageBackedUp(packageInfo, BackupType.KV, storageOutputStream)
+            manager.onPackageBackedUp(packageInfo, BackupType.KV, size, storageOutputStream)
             fail()
         } catch (e: IOException) {
             // expected
@@ -335,7 +343,7 @@ class MetadataManagerTest {
         every { clock.time() } returns time
         expectModifyMetadata(updatedMetadata)
 
-        manager.onPackageBackedUp(packageInfo, BackupType.FULL, storageOutputStream)
+        manager.onPackageBackedUp(packageInfo, BackupType.FULL, 0L, storageOutputStream)
 
         assertEquals(time, manager.getLastBackupTime())
         assertEquals(PackageMetadata(time), manager.getPackageMetadata(cachedPackageName))

app/src/test/java/com/stevesoltys/seedvault/metadata/MetadataWriterDecoderTest.kt

@@ -14,6 +14,7 @@ import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
 import org.junit.jupiter.api.TestInstance.Lifecycle.PER_CLASS
 import kotlin.random.Random
+import kotlin.random.nextLong
 
 @TestInstance(PER_CLASS)
 internal class MetadataWriterDecoderTest {
@@ -81,34 +82,37 @@ internal class MetadataWriterDecoderTest {
                     time = Random.nextLong(),
                     state = QUOTA_EXCEEDED,
                     backupType = BackupType.FULL,
+                    size = Random.nextLong(0..Long.MAX_VALUE),
                     system = Random.nextBoolean(),
                     version = Random.nextLong(),
                     installer = getRandomString(),
                     sha256 = getRandomString(),
-                    signatures = listOf(getRandomString())
+                    signatures = listOf(getRandomString()),
                 )
             )
             put(
                 getRandomString(), PackageMetadata(
                     time = Random.nextLong(),
                     state = NO_DATA,
                     backupType = BackupType.KV,
+                    size = null,
                     system = Random.nextBoolean(),
                     version = Random.nextLong(),
                     installer = getRandomString(),
                     sha256 = getRandomString(),
-                    signatures = listOf(getRandomString(), getRandomString())
+                    signatures = listOf(getRandomString(), getRandomString()),
                 )
             )
             put(
                 getRandomString(), PackageMetadata(
                     time = 0L,
                     state = NOT_ALLOWED,
+                    size = 0,
                     system = Random.nextBoolean(),
                     version = Random.nextLong(),
                     installer = getRandomString(),
                     sha256 = getRandomString(),
-                    signatures = listOf(getRandomString(), getRandomString())
+                    signatures = listOf(getRandomString(), getRandomString()),
                 )
             )
         }

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

@@ -147,7 +147,12 @@ internal class CoordinatorIntegrationTest : TransportTest() {
             metadataManager.onApkBackedUp(packageInfo, packageMetadata, metadataOutputStream)
         } just Runs
         every {
-            metadataManager.onPackageBackedUp(packageInfo, BackupType.KV, metadataOutputStream)
+            metadataManager.onPackageBackedUp(
+                packageInfo = packageInfo,
+                type = BackupType.KV,
+                size = more((appData.size + appData2.size).toLong()), // more because DB overhead
+                metadataOutputStream = metadataOutputStream,
+            )
         } just Runs
 
         // start K/V backup
@@ -216,7 +221,12 @@ internal class CoordinatorIntegrationTest : TransportTest() {
             backupPlugin.getOutputStream(token, FILE_BACKUP_METADATA)
         } returns metadataOutputStream
         every {
-            metadataManager.onPackageBackedUp(packageInfo, BackupType.KV, metadataOutputStream)
+            metadataManager.onPackageBackedUp(
+                packageInfo = packageInfo,
+                type = BackupType.KV,
+                size = more(size.toLong()), // more than $size, because DB overhead
+                metadataOutputStream = metadataOutputStream,
+            )
         } just Runs
 
         // start K/V backup
@@ -289,7 +299,12 @@ internal class CoordinatorIntegrationTest : TransportTest() {
             )
         } just Runs
         every {
-            metadataManager.onPackageBackedUp(packageInfo, BackupType.FULL, metadataOutputStream)
+            metadataManager.onPackageBackedUp(
+                packageInfo = packageInfo,
+                type = BackupType.FULL,
+                size = appData.size.toLong(),
+                metadataOutputStream = metadataOutputStream,
+            )
         } just Runs
 
         // perform backup to output stream