258 lines
9.3 KiB
Java
258 lines
9.3 KiB
Java
package com.keylesspalace.tusky.util;
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import android.app.NotificationManager;
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import android.content.Context;
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import android.support.annotation.NonNull;
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import android.support.v4.util.ArraySet;
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import android.text.Spanned;
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import android.util.Log;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.keylesspalace.tusky.R;
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import com.keylesspalace.tusky.entity.Notification;
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import com.keylesspalace.tusky.json.SpannedTypeAdapter;
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import com.keylesspalace.tusky.json.StringWithEmoji;
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import com.keylesspalace.tusky.json.StringWithEmojiTypeAdapter;
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import org.eclipse.paho.android.service.MqttAndroidClient;
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import org.eclipse.paho.client.mqttv3.DisconnectedBufferOptions;
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import org.eclipse.paho.client.mqttv3.IMqttActionListener;
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import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
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import org.eclipse.paho.client.mqttv3.IMqttToken;
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import org.eclipse.paho.client.mqttv3.MqttCallbackExtended;
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import org.eclipse.paho.client.mqttv3.MqttClient;
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import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
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import org.eclipse.paho.client.mqttv3.MqttException;
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import org.eclipse.paho.client.mqttv3.MqttMessage;
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import java.io.InputStream;
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import java.util.ArrayDeque;
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import static android.content.Context.NOTIFICATION_SERVICE;
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public class PushNotificationClient {
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private static final String TAG = "PushNotificationClient";
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private static final int NOTIFY_ID = 666;
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private static class QueuedAction {
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enum Type {
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SUBSCRIBE,
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UNSUBSCRIBE,
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DISCONNECT,
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}
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Type type;
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String topic;
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QueuedAction(Type type, String topic) {
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this.type = type;
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this.topic = topic;
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}
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}
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private MqttAndroidClient mqttAndroidClient;
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private ArrayDeque<QueuedAction> queuedActions;
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private ArraySet<String> subscribedTopics;
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public PushNotificationClient(final @NonNull Context applicationContext,
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@NonNull String serverUri) {
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queuedActions = new ArrayDeque<>();
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subscribedTopics = new ArraySet<>();
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// Create the MQTT client.
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String clientId = MqttClient.generateClientId();
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mqttAndroidClient = new MqttAndroidClient(applicationContext, serverUri, clientId);
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mqttAndroidClient.setCallback(new MqttCallbackExtended() {
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@Override
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public void connectComplete(boolean reconnect, String serverURI) {
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if (reconnect) {
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flushQueuedActions();
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for (String topic : subscribedTopics) {
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subscribeToTopic(topic);
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}
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}
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}
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@Override
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public void connectionLost(Throwable cause) {
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onConnectionLost();
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}
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@Override
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public void messageArrived(String topic, MqttMessage message) throws Exception {
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onMessageReceived(applicationContext, new String(message.getPayload()));
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}
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@Override
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public void deliveryComplete(IMqttDeliveryToken token) {
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// This client is read-only, so this is unused.
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}
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});
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}
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private void queueAction(QueuedAction.Type type, String topic) {
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// Search queue for duplicates and if one is found, return before it's added to the queue.
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for (QueuedAction action : queuedActions) {
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if (action.type == type) {
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switch (type) {
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case SUBSCRIBE:
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case UNSUBSCRIBE:
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if (!action.topic.equals(topic)) {
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return;
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}
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break;
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case DISCONNECT:
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return;
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}
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}
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}
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// Add the new unique action.
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queuedActions.add(new QueuedAction(type, topic));
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}
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private void flushQueuedActions() {
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while (!queuedActions.isEmpty()) {
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QueuedAction action = queuedActions.pop();
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switch (action.type) {
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case SUBSCRIBE: subscribeToTopic(action.topic); break;
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case UNSUBSCRIBE: unsubscribeToTopic(action.topic); break;
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case DISCONNECT: disconnect(); break;
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}
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}
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}
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/** Connect to the MQTT broker. */
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public void connect(Context context) {
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MqttConnectOptions options = new MqttConnectOptions();
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options.setAutomaticReconnect(true);
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options.setCleanSession(false);
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try {
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String password = context.getString(R.string.tusky_api_keystore_password);
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InputStream keystore = context.getResources().openRawResource(R.raw.keystore_tusky_api);
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try {
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options.setSocketFactory(mqttAndroidClient.getSSLSocketFactory(keystore, password));
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} finally {
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IOUtils.closeQuietly(keystore);
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}
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mqttAndroidClient.connect(options).setActionCallback(new IMqttActionListener() {
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@Override
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public void onSuccess(IMqttToken asyncActionToken) {
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DisconnectedBufferOptions bufferOptions = new DisconnectedBufferOptions();
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bufferOptions.setBufferEnabled(true);
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bufferOptions.setBufferSize(100);
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bufferOptions.setPersistBuffer(false);
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bufferOptions.setDeleteOldestMessages(false);
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mqttAndroidClient.setBufferOpts(bufferOptions);
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onConnectionSuccess();
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flushQueuedActions();
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}
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@Override
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public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
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Log.e(TAG, "An exception occurred while connecting. " + exception.getMessage()
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+ " " + exception.getCause());
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onConnectionFailure();
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}
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});
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} catch (MqttException e) {
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Log.e(TAG, "An exception occurred while connecpting. " + e.getMessage());
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onConnectionFailure();
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}
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}
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private void onConnectionSuccess() {
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Log.v(TAG, "The connection succeeded.");
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}
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private void onConnectionFailure() {
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Log.v(TAG, "The connection failed.");
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}
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private void onConnectionLost() {
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Log.v(TAG, "The connection was lost.");
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}
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/** Disconnect from the MQTT broker. */
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public void disconnect() {
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if (!mqttAndroidClient.isConnected()) {
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queueAction(QueuedAction.Type.DISCONNECT, null);
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return;
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}
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try {
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mqttAndroidClient.disconnect();
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} catch (MqttException ex) {
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Log.e(TAG, "An exception occurred while disconnecting.");
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onDisconnectFailed();
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}
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}
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private void onDisconnectFailed() {
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Log.v(TAG, "Failed while disconnecting from the broker.");
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}
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/** Subscribe to the push notification topic. */
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public void subscribeToTopic(final String topic) {
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if (!mqttAndroidClient.isConnected()) {
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queueAction(QueuedAction.Type.SUBSCRIBE, topic);
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return;
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}
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if (subscribedTopics.contains(topic)) {
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return;
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}
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try {
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mqttAndroidClient.subscribe(topic, 0, null, new IMqttActionListener() {
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@Override
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public void onSuccess(IMqttToken asyncActionToken) {
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subscribedTopics.add(topic);
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onConnectionSuccess();
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}
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@Override
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public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
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Log.e(TAG, "An exception occurred while subscribing." + exception.getMessage());
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onConnectionFailure();
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}
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});
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} catch (MqttException e) {
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Log.e(TAG, "An exception occurred while subscribing." + e.getMessage());
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onConnectionFailure();
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}
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}
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/** Unsubscribe from the push notification topic. */
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public void unsubscribeToTopic(String topic) {
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if (!mqttAndroidClient.isConnected()) {
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queueAction(QueuedAction.Type.UNSUBSCRIBE, topic);
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return;
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}
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try {
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mqttAndroidClient.unsubscribe(topic);
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subscribedTopics.remove(topic);
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} catch (MqttException e) {
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Log.e(TAG, "An exception occurred while unsubscribing." + e.getMessage());
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onConnectionFailure();
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}
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}
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private void onMessageReceived(final Context context, String message) {
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Log.v(TAG, "Notification received: " + message);
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Gson gson = new GsonBuilder()
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.registerTypeAdapter(Spanned.class, new SpannedTypeAdapter())
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.registerTypeAdapter(StringWithEmoji.class, new StringWithEmojiTypeAdapter())
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.create();
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Notification notification = gson.fromJson(message, Notification.class);
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NotificationMaker.make(context, NOTIFY_ID, notification);
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}
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public void clearNotifications(Context context) {
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((NotificationManager) (context.getSystemService(NOTIFICATION_SERVICE))).cancel(NOTIFY_ID);
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}
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public String getDeviceToken() {
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return mqttAndroidClient.getClientId();
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}
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}
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