添加撤回群发消息功能

broker/src/main/java/io/moquette/imhandler/IMHandler.java

@@ -268,4 +268,13 @@ abstract public class IMHandler<T> {
         mServer.getImBusinessScheduler().execute(() -> publisher.publish2Receivers(updatedMessage, notifyReceivers, clientID, ProtoConstants.PullType.Pull_Normal));
         return notifyReceivers.size();
     }
+    protected long publishRecallMultiCastMsg(long messageUid, List<String> receivers) {
+        WFCMessage.Message updatedMessage = m_messagesStore.getMessage(messageUid);
+
+        Set<String> notifyReceivers = new HashSet<>(receivers);
+        LOG.info("Multicast recall receiver count: {}", notifyReceivers.size());
+        mServer.getImBusinessScheduler().execute(() -> publisher.publish2Receivers(updatedMessage, notifyReceivers, null, ProtoConstants.PullType.Pull_Normal, false));
+
+        return notifyReceivers.size();
+    }
 }

broker/src/main/java/io/moquette/imhandler/RecallMultiCastMessageHandler.java

@@ -0,0 +1,36 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package io.moquette.imhandler;
+
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.proto.WFCMessage;
+import io.moquette.spi.impl.Qos1PublishHandler;
+import io.netty.buffer.ByteBuf;
+import win.liyufan.im.IMTopic;
+
+@Handler(value = IMTopic.RecallMultiCastMessageTopic)
+public class RecallMultiCastMessageHandler extends IMHandler<WFCMessage.RecallMultiCastMessageRequest> {
+    @Override
+    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, boolean isAdmin, WFCMessage.RecallMultiCastMessageRequest request, Qos1PublishHandler.IMCallback callback) {
+        if (!isAdmin) {
+            return ErrorCode.ERROR_CODE_NOT_RIGHT;
+        }
+
+        ErrorCode errorCode = m_messagesStore.recallCastMessage(request.getMessageId(), fromUser);
+
+        if(errorCode != ErrorCode.ERROR_CODE_SUCCESS) {
+            return errorCode;
+        }
+
+        publishRecallMultiCastMsg(request.getMessageId(), request.getReceiverList());
+
+        return errorCode;
+    }
+
+}

broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java

@@ -1754,6 +1754,26 @@ public class MemoryMessagesStore implements IMessagesStore {
         }
     }
 
+    public ErrorCode recallCastMessage(long messageUid, String operatorId) {
+        HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
+        IMap<Long, MessageBundle> mIMap = hzInstance.getMap(MESSAGES_MAP);
+
+        MessageBundle messageBundle = mIMap.get(messageUid);
+        if (messageBundle != null) {
+            WFCMessage.Message message = messageBundle.getMessage();
+
+            message = message.toBuilder().setContent(WFCMessage.MessageContent.newBuilder().setContent(operatorId).setType(80).setData(ByteString.copyFrom(String.valueOf(messageUid).getBytes()))).build();
+            messageBundle.setMessage(message);
+            messageBundle.setFromClientId(null);
+
+            databaseStore.deleteMessage(messageUid);
+            mIMap.set(messageUid, messageBundle, 7, TimeUnit.DAYS);
+            return ErrorCode.ERROR_CODE_SUCCESS;
+        } else {
+            return ErrorCode.ERROR_CODE_NOT_EXIST;
+        }
+    }
+
     @Override
     public void clearUserMessages(String userId) {
         mWriteLock.lock();

broker/src/main/java/io/moquette/spi/IMessagesStore.java

@@ -124,6 +124,7 @@ public interface IMessagesStore {
     ErrorCode canSendMessageInGroup(String member, String groupId);
 
     ErrorCode recallMessage(long messageUid, String operatorId, String clientId, boolean isAdmin);
+    ErrorCode recallCastMessage(long messageUid, String operatorId);
 
     void clearUserMessages(String userId);