Condensed the looping on subscription on separate class

2016-12-13 23:43:02 +01:00
parent b58cd086ea
commit 2b554ca475
8 changed files with 96 additions and 208 deletions
@@ -0,0 +1,78 @@
+package io.moquette.spi.impl;
+
+import io.moquette.parser.proto.messages.AbstractMessage;
+import io.moquette.parser.proto.messages.PublishMessage;
+import io.moquette.server.ConnectionDescriptor;
+import io.moquette.spi.ClientSession;
+import io.moquette.spi.IMessagesStore;
+import io.moquette.spi.ISessionsStore;
+import io.moquette.spi.MessageGUID;
+import io.moquette.spi.impl.subscriptions.Subscription;
+import io.netty.channel.Channel;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.ByteBuffer;
+import java.util.List;
+import java.util.concurrent.ConcurrentMap;
+
+import static io.moquette.spi.impl.ProtocolProcessor.lowerQosToTheSubscriptionDesired;
+
+class MetaPublisher {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MetaPublisher.class);
+    private final ConcurrentMap<String, ConnectionDescriptor> connectionDescriptors;
+    private final ISessionsStore m_sessionsStore;
+    private final IMessagesStore m_messagesStore;
+    private final Qos0Publisher qos0Publisher;
+    private final Qos2Publisher qos2Publisher;
+
+    public MetaPublisher(ConcurrentMap<String, ConnectionDescriptor> connectionDescriptors, ISessionsStore sessionsStore,
+                         IMessagesStore messagesStore) {
+        this.connectionDescriptors = connectionDescriptors;
+        this.m_sessionsStore = sessionsStore;
+        this.m_messagesStore = messagesStore;
+        this.qos0Publisher = new Qos0Publisher(connectionDescriptors, sessionsStore);
+        this.qos2Publisher = new Qos2Publisher(connectionDescriptors, sessionsStore, m_messagesStore);
+    }
+
+    void publish2Subscribers(IMessagesStore.StoredMessage pubMsg, List<Subscription> topicMatchingSubscriptions) {
+        final String topic = pubMsg.getTopic();
+        final AbstractMessage.QOSType publishingQos = pubMsg.getQos();
+        final ByteBuffer origMessage = pubMsg.getMessage();
+
+        //if QoS 1 or 2 store the message
+        MessageGUID guid = null;
+        if (publishingQos != AbstractMessage.QOSType.MOST_ONE) {
+            guid = m_messagesStore.storePublishForFuture(pubMsg);
+        }
+
+        LOG.trace("Found {} matching subscriptions to <{}>", topicMatchingSubscriptions.size(), topic);
+        for (final Subscription sub : topicMatchingSubscriptions) {
+            AbstractMessage.QOSType qos = lowerQosToTheSubscriptionDesired(sub, publishingQos);
+            ClientSession targetSession = m_sessionsStore.sessionForClient(sub.getClientId());
+
+            boolean targetIsActive = this.connectionDescriptors.containsKey(sub.getClientId());
+
+            LOG.debug("Broker republishing to client <{}> topic <{}> qos <{}>, active {}",
+                    sub.getClientId(), sub.getTopicFilter(), qos, targetIsActive);
+            ByteBuffer message = origMessage.duplicate();
+            if (targetIsActive) {
+                //QoS 0
+                if (qos == AbstractMessage.QOSType.MOST_ONE) {
+                    this.qos0Publisher.publishQos0(targetSession, topic, message);
+                } else {
+                    //QoS 1 or 2
+                    int messageId = targetSession.nextPacketId();
+                    targetSession.inFlightAckWaiting(guid, messageId);
+                    this.qos2Publisher.publishQos2(targetSession, topic, qos, message, false, messageId);
+                }
+            } else {
+                if (!targetSession.isCleanSession()) {
+                    //store the message in targetSession queue to deliver
+                    targetSession.enqueueToDeliver(guid);
+                }
+            }
+        }
+    }
+}