1 files changed, 214 insertions, 0 deletions
diff --git a/juick-notifications/src/main/java/com/juick/components/NotificationsManager.java b/juick-notifications/src/main/java/com/juick/components/NotificationsManager.java
new file mode 100644
index 00000000..be97ea40
--- /dev/null
+++ b/juick-notifications/src/main/java/com/juick/components/NotificationsManager.java
@@ -0,0 +1,214 @@
+/*
+ * Juick
+ * Copyright (C) 2013, Ugnich Anton
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.juick.components;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.juick.ExternalToken;
+import com.juick.User;
+import com.juick.service.component.DisconnectedEvent;
+import com.juick.service.component.MessageEvent;
+import com.juick.service.component.MessageReadEvent;
+import com.juick.util.MessageUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.MediaType;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.socket.CloseStatus;
+import org.springframework.web.socket.PingMessage;
+import org.springframework.web.socket.TextMessage;
+import org.springframework.web.socket.WebSocketSession;
+import org.springframework.web.socket.handler.ConcurrentWebSocketSessionDecorator;
+import org.springframework.web.socket.handler.TextWebSocketHandler;
+
+import javax.annotation.Nonnull;
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+import javax.inject.Inject;
+import java.io.IOException;
+import java.util.*;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.stream.Collectors;
+
+/**
+ * @author Ugnich Anton
+ */
+@Component
+public class NotificationsManager extends TextWebSocketHandler {
+    private static Logger logger = LoggerFactory.getLogger(NotificationsManager.class);
+
+    @Inject
+    private RestTemplate rest;
+
+    @Inject
+    private ObjectMapper jsonMapper;
+
+    private final Set<String> invalidGCMTokens = Collections.synchronizedSet(new HashSet<>());
+    private final Set<String> invalidMPNSTokens = Collections.synchronizedSet(new HashSet<>());
+    private final Set<String> invalidAPNSTokens = Collections.synchronizedSet(new HashSet<>());
+
+    @PostConstruct
+    public void init() {
+        closeFlag.set(false);
+    }
+    public void messageReceived(@Nonnull com.juick.Message jmsg) {
+        if (jmsg.isService()) {
+            serviceMessageReceived(jmsg);
+            return;
+        }
+        User pmTo = jmsg.getTo();
+        final List<User> users = new ArrayList<>();
+        if (MessageUtils.isPM(jmsg)) {
+            users.addAll(rest.exchange(String.format("http://api.juick.com/notifications?uid=%d",
+                    pmTo.getUid()),
+                    HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {
+                    }).getBody());
+        } else if (MessageUtils.isReply(jmsg)) {
+            users.addAll(rest.exchange(String.format("http://api.juick.com/notifications?uid=%d&mid=%d&rid=%d",
+                    jmsg.getUser().getUid(), jmsg.getMid(), jmsg.getRid()),
+                    HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {
+                    }).getBody());
+        } else {
+            users.addAll(rest.exchange(String.format("http://api.juick.com/notifications?uid=%s&mid=%s",
+                    jmsg.getUser().getUid(), jmsg.getMid()),
+                    HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {
+                    }).getBody());
+        }
+        applicationEventPublisher.publishEvent(new MessageEvent(this, jmsg, users));
+    }
+    private void serviceMessageReceived(@Nonnull com.juick.Message jmsg) {
+        logger.info("Message read event from {} for {}", jmsg.getUser().getName(), jmsg.getMid());
+        List<User> users = rest.exchange(String.format("http://api.juick.com/notifications?uid=%d",
+                jmsg.getUser().getUid()),
+                HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {
+                }).getBody();
+        applicationEventPublisher.publishEvent(new MessageReadEvent(this, users, jmsg));
+    }
+
+    public void addInvalidGCMToken(String token) {
+        synchronized (invalidGCMTokens) {
+            invalidGCMTokens.add(token);
+        }
+    }
+    public Set<String> getInvalidGCMTokens() {
+        return invalidGCMTokens;
+    }
+    public void cleanupGCMTokens() {
+        logger.info("removed {} GCM tokens", invalidGCMTokens.size());
+        synchronized (invalidGCMTokens) {
+            invalidGCMTokens.clear();
+        }
+    }
+    public void addInvalidMPNSToken(String token) {
+        synchronized (invalidMPNSTokens) {
+            invalidMPNSTokens.add(token);
+        }
+    }
+    public Set<String> getInvalidMPNSTokens() {
+        return invalidMPNSTokens;
+    }
+    public void cleanupMPNSTokens() {
+        logger.info("removed {} MPNS tokens", invalidMPNSTokens.size());
+        synchronized (invalidMPNSTokens) {
+            invalidMPNSTokens.clear();
+        }
+    }
+
+    public Set<String> getInvalidAPNSTokens() {
+        return invalidAPNSTokens;
+    }
+    @Inject
+    private ApplicationEventPublisher applicationEventPublisher;
+
+    private ConcurrentWebSocketSessionDecorator session;
+    private final AtomicBoolean closeFlag = new AtomicBoolean(false);
+
+    @Override
+    public void afterConnectionEstablished(WebSocketSession session) {
+        if (!closeFlag.get()) {
+            logger.info("WebSocket connected");
+            this.session = new ConcurrentWebSocketSessionDecorator(session, 60000, 65535);
+        }
+    }
+
+    @Override
+    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) {
+        if (!closeFlag.get()) {
+            logger.info("WebSocket disconnected with code {}: {}", status.getCode(), status.getReason());
+            applicationEventPublisher.publishEvent(new DisconnectedEvent(this));
+        }
+    }
+
+    @Override
+    protected void handleTextMessage(WebSocketSession session, TextMessage text) throws Exception {
+        if (!closeFlag.get() && this.session.getDelegate().equals(session)) {
+            com.juick.Message jmsg = jsonMapper.readValue(text.asBytes(), com.juick.Message.class);
+
+            if (logger.isInfoEnabled()) // prevent writeValueAsString execution if logger disabled
+                logger.info("got jmsg: {}", jsonMapper.writeValueAsString(jmsg));
+            messageReceived(jmsg);
+        }
+    }
+
+    @Scheduled(fixedRate = 30000, initialDelay = 30000)
+    public void ping() throws IOException {
+        if (!closeFlag.get()) {
+            if (session != null && session.isOpen()) {
+                logger.debug("Sending WebSocket ping");
+                session.sendMessage(new PingMessage());
+            } else {
+                applicationEventPublisher.publishEvent(new DisconnectedEvent(this));
+            }
+        }
+    }
+    @PreDestroy
+    public void close() {
+        closeFlag.set(true);
+    }
+    @Scheduled(fixedRate = 600000)
+    public void cleanupTokens() {
+        if (!closeFlag.get()) {
+            logger.debug("initializing GCM tokens cleanup: {} tokens", getInvalidGCMTokens().size());
+            deleteTokens("gcm", new ArrayList<>(getInvalidGCMTokens()));
+            cleanupGCMTokens();
+            logger.debug("initializing MPNS tokens cleanup: {} tokens", getInvalidMPNSTokens().size());
+            deleteTokens("mpns", new ArrayList<>(getInvalidMPNSTokens()));
+            cleanupMPNSTokens();
+            logger.debug("initializing APNS tokens cleanup: {} tokens", getInvalidAPNSTokens().size());
+            deleteTokens("apns", new ArrayList<>(getInvalidAPNSTokens()));
+            cleanupMPNSTokens();
+        }
+    }
+    private void deleteTokens(String type, List<String> devices) {
+        if (devices.size() > 0) {
+            List<ExternalToken> list = devices.stream()
+                    .map(d -> new ExternalToken(null, type, d, null)).collect(Collectors.toList());
+            HttpHeaders headers = new HttpHeaders();
+            headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
+            rest.exchange("http://api.juick.com/notifications",
+                    HttpMethod.DELETE, new HttpEntity<>(list, headers), new ParameterizedTypeReference<Void>() {
+                    });
+        }
+    }
+}