Package org.hornetq.core.paging

Examples of org.hornetq.core.paging.PagedMessage

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         {
            return null;
         }
      }

      PagedMessage serverMessage = cache.getMessage(retPos.getMessageNr());

      if (serverMessage != null)
      {
         return cursorProvider.newReference(retPos, serverMessage, this);
      }
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   /**
    * @param packet
    */
   private void handlePageWrite(final ReplicationPageWriteMessage packet) throws Exception
   {
      PagedMessage pgdMessage = packet.getPagedMessage();
      ServerMessage msg = pgdMessage.getMessage(storage);
      Page page = getPage(msg.getAddress(), packet.getPageNumber());
      page.write(pgdMessage);
   }
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            buff.putLong(message.getMessageID());

            message.putBytesProperty(Message.HDR_DUPLICATE_DETECTION_ID, bytes);
         }

         PagedMessage pagedMessage;
        
         if (!message.isDurable())
         {
            // The address should never be transient when paging (even for non-persistent messages when paging)
            // This will force everything to be persisted
            message.bodyChanged();
         }

         if (transactionID != -1)
         {
            pagedMessage = new PagedMessageImpl(message, transactionID);
         }
         else
         {
            pagedMessage = new PagedMessageImpl(message);
         }

         int bytesToWrite = pagedMessage.getEncodeSize() + PageImpl.SIZE_RECORD;

         if (currentPageSize.addAndGet(bytesToWrite) > pageSize && currentPage.getNumberOfMessages() > 0)
         {
            // Make sure nothing is currently validating or using currentPage
            currentPageLock.writeLock().lock();
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            {
               int messageSize = fileBuffer.readInt();
               int oldPos = fileBuffer.readerIndex();
               if (fileBuffer.readerIndex() + messageSize < fileBuffer.capacity() && fileBuffer.getByte(oldPos + messageSize) == PageImpl.END_BYTE)
               {
                  PagedMessage msg = new PagedMessageImpl();
                  msg.decode(fileBuffer);
                  byte b = fileBuffer.readByte();
                  if (b != PageImpl.END_BYTE)
                  {
                     // Sanity Check: This would only happen if there is a bug on decode or any internal code, as this
                     // constraint was already checked
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         {
            return null;
         }
      }

      PagedMessage serverMessage = cache.getMessage(retPos.getMessageNr());

      if (serverMessage != null)
      {
         return cursorProvider.newReference(retPos, serverMessage, this);
      }
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            // This will force everything to be persisted
            message.bodyChanged();
         }


         PagedMessage pagedMessage = new PagedMessageImpl(message, routeQueues(tx, listCtx), tx == null ? -1 : tx.getID());

         int bytesToWrite = pagedMessage.getEncodeSize() + PageImpl.SIZE_RECORD;

         if (currentPageSize.addAndGet(bytesToWrite) > pageSize && currentPage.getNumberOfMessages() > 0)
         {
            // Make sure nothing is currently validating or using currentPage
            openNewPage();
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         // it will be null in the case of the current writing page
         return null;
      }
      else
      {
         PagedMessage serverMessage = cache.getMessage(retPos.getMessageNr());

         if (serverMessage != null)
         {
            return cursorProvider.newReference(retPos, serverMessage, this);
         }
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                  int messageSize = fileBuffer.readInt();
                  int oldPos = fileBuffer.readerIndex();
                  if (fileBuffer.readerIndex() + messageSize < fileBuffer.capacity() &&
                     fileBuffer.getByte(oldPos + messageSize) == Page.END_BYTE)
                  {
                     PagedMessage msg = new PagedMessageImpl();
                     msg.decode(fileBuffer);
                     byte b = fileBuffer.readByte();
                     if (b != Page.END_BYTE)
                     {
                        // Sanity Check: This would only happen if there is a bug on decode or any internal code, as
                        // this
                        // constraint was already checked
                        throw new IllegalStateException("Internal error, it wasn't possible to locate END_BYTE " + b);
                     }
                     msg.initMessage(storage);
                     if (isTrace)
                     {
                        HornetQServerLogger.LOGGER.trace("Reading message " + msg + " on pageId=" + this.pageId + " for address=" + storeName);
                     }
                     messages.add(msg);
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               // This will force everything to be persisted
               message.forceAddress(address);
            }

            final long transactionID = tx == null ? -1 : tx.getID();
            PagedMessage pagedMessage = new PagedMessageImpl(message, routeQueues(tx, listCtx), transactionID);

            if (message.isLargeMessage())
            {
               ((LargeServerMessage) message).setPaged();
            }

            int bytesToWrite = pagedMessage.getEncodeSize() + Page.SIZE_RECORD;

            if (currentPageSize.addAndGet(bytesToWrite) > pageSize && currentPage.getNumberOfMessages() > 0)
            {
               // Make sure nothing is currently validating or using currentPage
               openNewPage();
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      return getPagedMessage().getMessage();
   }

   public synchronized PagedMessage getPagedMessage()
   {
      PagedMessage returnMessage = message != null ? message.get() : null;

      // We only keep a few references on the Queue from paging...
      // Besides those references are SoftReferenced on page cache...
      // So, this will unlikely be null,
      // unless the Queue has stalled for some time after paging
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Related Classes of org.hornetq.core.paging.PagedMessage

  • org.hornetq.core.paging.cursor.impl.PageSubscriptionImpl
  • org.hornetq.core.paging.cursor.PagedReferenceImpl
  • org.hornetq.core.paging.impl.Page
  • org.hornetq.core.paging.impl.PageImpl
  • org.hornetq.core.paging.impl.PagingStoreImpl
  • org.hornetq.core.replication.impl.ReplicationEndpointImpl
  • org.hornetq.core.replication.ReplicationEndpoint
  • org.hornetq.tests.integration.replication.ReplicationTest
  • org.hornetq.tests.stress.paging.PageCursorStressTest
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