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Show notifications from workers (#3760)

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Fix a crash where workers, in some conditions, should show a notification. These are sent to a dedicated channel with no importance.

Convert NotificationWorker to a CoroutineWorker and remove its use of `runBlocking`.

Fixes #3754
This commit is contained in:
Nik Clayton 2023-06-29 18:37:27 +02:00 committed by GitHub
parent 7fe4c9f317
commit 1f7a5f626d
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 158 additions and 84 deletions
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140
app/lint-baseline.xml
View file

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3
app/src/main/java/com/keylesspalace/tusky/TuskyApplication.kt
View file

@ -23,6 +23,7 @@ import androidx.work.ExistingPeriodicWorkPolicy
import androidx.work.PeriodicWorkRequestBuilder
import androidx.work.WorkManager
import autodispose2.AutoDisposePlugins
import com.keylesspalace.tusky.components.notifications.NotificationHelper
import com.keylesspalace.tusky.di.AppInjector
import com.keylesspalace.tusky.settings.PrefKeys
import com.keylesspalace.tusky.settings.SCHEMA_VERSION
@ -95,6 +96,8 @@ class TuskyApplication : Application(), HasAndroidInjector {
Log.w("RxJava", "undeliverable exception", it)
}
NotificationHelper.createWorkerNotificationChannel(this)
WorkManager.initialize(
this,
androidx.work.Configuration.Builder()

17
app/src/main/java/com/keylesspalace/tusky/components/notifications/NotificationFetcher.kt
View file

@ -11,9 +11,10 @@ import com.keylesspalace.tusky.entity.Marker
import com.keylesspalace.tusky.entity.Notification
import com.keylesspalace.tusky.network.MastodonApi
import com.keylesspalace.tusky.util.isLessThan
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.delay
import javax.inject.Inject
import kotlin.math.min
import kotlin.time.Duration.Companion.milliseconds
/**
* Fetch Mastodon notifications and show Android notifications, with summaries, for them.
@ -29,19 +30,17 @@ class NotificationFetcher @Inject constructor(
private val accountManager: AccountManager,
private val context: Context
) {
fun fetchAndShow() {
suspend fun fetchAndShow() {
for (account in accountManager.getAllAccountsOrderedByActive()) {
if (account.notificationsEnabled) {
try {
val notificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
// Create sorted list of new notifications
val notifications = runBlocking { // OK, because in a worker thread
fetchNewNotifications(account)
.filter { filterNotification(notificationManager, account, it) }
.sortedWith(compareBy({ it.id.length }, { it.id })) // oldest notifications first
.toMutableList()
}
val notifications = fetchNewNotifications(account)
.filter { filterNotification(notificationManager, account, it) }
.sortedWith(compareBy({ it.id.length }, { it.id })) // oldest notifications first
.toMutableList()
// There's a maximum limit on the number of notifications an Android app
// can display. If the total number of notifications (current notifications,
@ -82,7 +81,7 @@ class NotificationFetcher @Inject constructor(
// Android will rate limit / drop notifications if they're posted too
// quickly. There is no indication to the user that this happened.
// See https://github.com/tuskyapp/Tusky/pull/3626#discussion_r1192963664
Thread.sleep(1000)
delay(1000.milliseconds)
}
NotificationHelper.updateSummaryNotifications(

52
app/src/main/java/com/keylesspalace/tusky/components/notifications/NotificationHelper.java
View file

@ -37,6 +37,7 @@ import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.StringRes;
import androidx.core.app.NotificationCompat;
import androidx.core.app.RemoteInput;
import androidx.core.app.TaskStackBuilder;
@ -77,7 +78,12 @@ import java.util.concurrent.TimeUnit;
public class NotificationHelper {
private static int notificationId = 0;
/** ID of notification shown when fetching notifications */
public static final int NOTIFICATION_ID_FETCH_NOTIFICATION = 0;
/** ID of notification shown when pruning the cache */
public static final int NOTIFICATION_ID_PRUNE_CACHE = 1;
/** Dynamic notification IDs start here */
private static int notificationId = NOTIFICATION_ID_PRUNE_CACHE + 1;
/**
* constants used in Intents
@ -121,6 +127,7 @@ public class NotificationHelper {
public static final String CHANNEL_SIGN_UP = "CHANNEL_SIGN_UP";
public static final String CHANNEL_UPDATES = "CHANNEL_UPDATES";
public static final String CHANNEL_REPORT = "CHANNEL_REPORT";
public static final String CHANNEL_BACKGROUND_TASKS = "CHANNEL_BACKGROUND_TASKS";
/**
* WorkManager Tag
@ -472,6 +479,49 @@ public class NotificationHelper {
pendingIntentFlags(false));
}
/**
* Creates a notification channel for notifications for background work that should not
* disturb the user.
*
* @param context context
*/
public static void createWorkerNotificationChannel(@NonNull Context context) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return;
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationChannel channel = new NotificationChannel(
CHANNEL_BACKGROUND_TASKS,
context.getString(R.string.notification_listenable_worker_name),
NotificationManager.IMPORTANCE_NONE
);
channel.setDescription(context.getString(R.string.notification_listenable_worker_description));
channel.enableLights(false);
channel.enableVibration(false);
channel.setShowBadge(false);
notificationManager.createNotificationChannel(channel);
}
/**
* Creates a notification for a background worker.
*
* @param context context
* @param titleResource String resource to use as the notification's title
* @return the notification
*/
@NonNull
public static android.app.Notification createWorkerNotification(@NonNull Context context, @StringRes int titleResource) {
String title = context.getString(titleResource);
return new NotificationCompat.Builder(context, CHANNEL_BACKGROUND_TASKS)
.setContentTitle(title)
.setTicker(title)
.setSmallIcon(R.drawable.ic_notify)
.setOngoing(true)
.build();
}
public static void createNotificationChannelsForAccount(@NonNull AccountEntity account, @NonNull Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

17
app/src/main/java/com/keylesspalace/tusky/worker/NotificationWorker.kt
View file

@ -17,10 +17,15 @@
package com.keylesspalace.tusky.worker
import android.app.Notification
import android.content.Context
import androidx.work.Worker
import androidx.work.CoroutineWorker
import androidx.work.ForegroundInfo
import androidx.work.WorkerParameters
import com.keylesspalace.tusky.R
import com.keylesspalace.tusky.components.notifications.NotificationFetcher
import com.keylesspalace.tusky.components.notifications.NotificationHelper
import com.keylesspalace.tusky.components.notifications.NotificationHelper.NOTIFICATION_ID_FETCH_NOTIFICATION
import javax.inject.Inject
/** Fetch and show new notifications. */
@ -28,16 +33,20 @@ class NotificationWorker(
appContext: Context,
params: WorkerParameters,
private val notificationsFetcher: NotificationFetcher
) : Worker(appContext, params) {
override fun doWork(): Result {
) : CoroutineWorker(appContext, params) {
val notification: Notification = NotificationHelper.createWorkerNotification(applicationContext, R.string.notification_notification_worker)
override suspend fun doWork(): Result {
notificationsFetcher.fetchAndShow()
return Result.success()
}
override suspend fun getForegroundInfo() = ForegroundInfo(NOTIFICATION_ID_FETCH_NOTIFICATION, notification)
class Factory @Inject constructor(
private val notificationsFetcher: NotificationFetcher
) : ChildWorkerFactory {
override fun createWorker(appContext: Context, params: WorkerParameters): Worker {
override fun createWorker(appContext: Context, params: WorkerParameters): CoroutineWorker {
return NotificationWorker(appContext, params, notificationsFetcher)
}
}

9
app/src/main/java/com/keylesspalace/tusky/worker/PruneCacheWorker.kt
View file

@ -17,11 +17,16 @@
package com.keylesspalace.tusky.worker
import android.app.Notification
import android.content.Context
import android.util.Log
import androidx.work.CoroutineWorker
import androidx.work.ForegroundInfo
import androidx.work.ListenableWorker
import androidx.work.WorkerParameters
import com.keylesspalace.tusky.R
import com.keylesspalace.tusky.components.notifications.NotificationHelper
import com.keylesspalace.tusky.components.notifications.NotificationHelper.NOTIFICATION_ID_PRUNE_CACHE
import com.keylesspalace.tusky.db.AccountManager
import com.keylesspalace.tusky.db.AppDatabase
import javax.inject.Inject
@ -33,6 +38,8 @@ class PruneCacheWorker(
private val appDatabase: AppDatabase,
private val accountManager: AccountManager
) : CoroutineWorker(appContext, workerParams) {
val notification: Notification = NotificationHelper.createWorkerNotification(applicationContext, R.string.notification_prune_cache)
override suspend fun doWork(): Result {
for (account in accountManager.accounts) {
Log.d(TAG, "Pruning database using account ID: ${account.id}")
@ -41,6 +48,8 @@ class PruneCacheWorker(
return Result.success()
}
override suspend fun getForegroundInfo() = ForegroundInfo(NOTIFICATION_ID_PRUNE_CACHE, notification)
companion object {
private const val TAG = "PruneCacheWorker"
private const val MAX_STATUSES_IN_CACHE = 1000

4
app/src/main/res/values/strings.xml
View file

@ -371,6 +371,8 @@
<string name="notification_update_description">Notifications when posts you\'ve interacted with are edited</string>
<string name="notification_report_name">Reports</string>
<string name="notification_report_description">Notifications about moderation reports</string>
<string name="notification_listenable_worker_name">Background activity</string>
<string name="notification_listenable_worker_description">Notifications when Tusky is working in the background</string>
<string name="notification_unknown_name">Unknown</string>
<string name="notification_mention_format">%s mentioned you</string>
@ -381,6 +383,8 @@
<item quantity="one">%d new interaction</item>
<item quantity="other">%d new interactions</item>
</plurals>
<string name="notification_notification_worker">Fetching notifications…</string>
<string name="notification_prune_cache">Cache maintenance…</string>
<string name="description_account_locked">Locked Account</string>