ViacheslavKlimov
3 years ago
11 changed files with 161 additions and 49 deletions
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/** |
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* Copyright © 2016-2023 The Thingsboard Authors |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.thingsboard.server.service.notification.provider; |
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import com.github.benmanes.caffeine.cache.Cache; |
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import com.github.benmanes.caffeine.cache.Caffeine; |
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import com.github.benmanes.caffeine.cache.RemovalCause; |
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import com.google.auth.oauth2.GoogleCredentials; |
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import com.google.firebase.FirebaseApp; |
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import com.google.firebase.FirebaseOptions; |
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import com.google.firebase.messaging.FirebaseMessaging; |
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import com.google.firebase.messaging.FirebaseMessagingException; |
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import com.google.firebase.messaging.Message; |
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import com.google.firebase.messaging.Notification; |
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import lombok.Getter; |
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import org.apache.commons.io.IOUtils; |
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import org.springframework.stereotype.Service; |
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import org.thingsboard.rule.engine.api.notification.FirebaseService; |
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import org.thingsboard.server.common.data.id.TenantId; |
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import java.io.IOException; |
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import java.nio.charset.StandardCharsets; |
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import java.util.concurrent.TimeUnit; |
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@Service |
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public class DefaultFirebaseService implements FirebaseService { |
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private final Cache<String, FirebaseContext> contexts = Caffeine.newBuilder() |
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.expireAfterAccess(1, TimeUnit.DAYS) |
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.<String, FirebaseContext>removalListener((key, context, cause) -> { |
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if (cause == RemovalCause.EXPIRED && context != null) { |
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context.destroy(); |
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} |
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}) |
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.build(); |
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@Override |
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public void sendMessage(TenantId tenantId, String credentials, String fcmToken, String title, String body) { |
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FirebaseContext firebaseContext = contexts.asMap().compute(tenantId.toString(), (key, context) -> { |
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if (context == null) { |
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return new FirebaseContext(key, credentials); |
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} else { |
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context.check(credentials); |
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return context; |
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} |
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}); |
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Message message = Message.builder() |
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.setNotification(Notification.builder() |
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.setTitle(title) |
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.setBody(body) |
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.build()) |
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.setToken(fcmToken) |
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.build(); |
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try { |
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firebaseContext.getMessaging().send(message); |
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} catch (FirebaseMessagingException e) { |
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throw new RuntimeException("Failed to send message via FCM: " + e.getMessage(), e); |
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} |
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} |
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public static class FirebaseContext { |
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private final String key; |
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private String credentials; |
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private FirebaseApp app; |
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@Getter |
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private FirebaseMessaging messaging; |
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public FirebaseContext(String key, String credentials) { |
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this.key = key; |
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this.credentials = credentials; |
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init(); |
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} |
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private void init() { |
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FirebaseOptions options; |
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try { |
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options = FirebaseOptions.builder() |
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.setCredentials(GoogleCredentials.fromStream(IOUtils.toInputStream(credentials, StandardCharsets.UTF_8))) |
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.build(); |
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} catch (IOException e) { |
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throw new RuntimeException("Failed to process service account credentials: " + e.getMessage(), e); |
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} |
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try { |
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app = FirebaseApp.initializeApp(options, key); |
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} catch (IllegalStateException alreadyExists) { // should never normally happen
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app = FirebaseApp.getInstance(key); |
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} |
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try { |
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messaging = FirebaseMessaging.getInstance(app); |
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} catch (IllegalStateException alreadyExists) { // should never normally happen
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messaging = FirebaseMessaging.getInstance(app); |
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} |
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} |
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public void check(String credentials) { |
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if (!this.credentials.equals(credentials)) { |
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app.delete(); |
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this.credentials = credentials; |
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init(); |
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} |
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} |
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public void destroy() { |
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app.delete(); |
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app = null; |
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messaging = null; |
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} |
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} |
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} |
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@ -0,0 +1,24 @@ |
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/** |
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* Copyright © 2016-2023 The Thingsboard Authors |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.thingsboard.rule.engine.api.notification; |
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import org.thingsboard.server.common.data.id.TenantId; |
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public interface FirebaseService { |
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void sendMessage(TenantId tenantId, String credentials, String fcmToken, String title, String body); |
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} |
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