Examples of org.hornetq.core.client.impl.LargeMessageBufferImpl

org.hornetq.core.client.impl.LargeMessageBufferImpl
This class aggregates several SessionReceiveContinuationMessages as it was being handled by a single buffer. This buffer can be consumed as messages are arriving, and it will hold the packets until they are read using the ChannelBuffer interface, or the setOutputStream or saveStream are called. @author Clebert Suconic

   }


   // Test Simple getBytes
   public void testGetBytes() throws Exception
   {
      LargeMessageBufferImpl buffer = create15BytesSample();


      for (int i = 1; i <= 15; i++)
      {
         try
         {
            Assert.assertEquals(i, buffer.readByte());
         }
         catch (Exception e)
         {
            throw new Exception("Exception at position " + i, e);
         }
      }


      try
      {
         buffer.readByte();
         Assert.fail("supposed to throw an exception");
      }
      catch (IndexOutOfBoundsException e)
      {
      }

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   }


   // Test for void getBytes(final int index, final byte[] dst)
   public void testGetBytesIByteArray() throws Exception
   {
      LargeMessageBufferImpl buffer = create15BytesSample();


      byte[] bytes = new byte[15];
      buffer.getBytes(0, bytes);


      validateAgainstSample(bytes);


      try
      {
         buffer = create15BytesSample();


         bytes = new byte[16];
         buffer.getBytes(0, bytes);
         Assert.fail("supposed to throw an exception");
      }
      catch (java.lang.IndexOutOfBoundsException e)
      {
      }

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   }


   // testing void getBytes(int index, ChannelBuffer dst, int dstIndex, int length)
   public void testGetBytesILChannelBufferII() throws Exception
   {
      LargeMessageBufferImpl buffer = create15BytesSample();


      HornetQBuffer dstBuffer = HornetQBuffers.fixedBuffer(20);


      dstBuffer.setIndex(0, 5);


      buffer.getBytes(0, dstBuffer);


      byte[] compareBytes = new byte[15];
      dstBuffer.getBytes(5, compareBytes);


      validateAgainstSample(compareBytes);

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   }


   // testing void getBytes(int index, ChannelBuffer dst, int dstIndex, int length)
   public void testReadIntegers() throws Exception
   {
      LargeMessageBufferImpl buffer = createBufferWithIntegers(3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);


      for (int i = 1; i <= 15; i++)
      {
         Assert.assertEquals(i, buffer.readInt());
      }


      try
      {
         buffer.readByte();
         Assert.fail("supposed to throw an exception");
      }
      catch (IndexOutOfBoundsException e)
      {
      }

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   }


   // testing void getBytes(int index, ChannelBuffer dst, int dstIndex, int length)
   public void testReadLongs() throws Exception
   {
      LargeMessageBufferImpl buffer = createBufferWithLongs(3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);


      for (int i = 1; i <= 15; i++)
      {
         Assert.assertEquals(i, buffer.readLong());
      }


      try
      {
         buffer.readByte();
         Assert.fail("supposed to throw an exception");
      }
      catch (IndexOutOfBoundsException e)
      {
      }

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      dynamic.writeUTF(str1);
      dynamic.writeString(str2);
      dynamic.writeDouble(d1);
      dynamic.writeFloat(f1);


      LargeMessageBufferImpl readBuffer = splitBuffer(3, dynamic.toByteBuffer().array());


      Assert.assertEquals(str1, readBuffer.readUTF());
      Assert.assertEquals(str2, readBuffer.readString());
      Assert.assertEquals(d1, readBuffer.readDouble());
      Assert.assertEquals(f1, readBuffer.readFloat());
   }

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      dynamic.writeUTF(str1);
      dynamic.writeString(str2);
      dynamic.writeDouble(d1);
      dynamic.writeFloat(f1);


      LargeMessageBufferImpl readBuffer = splitBuffer(3, dynamic.toByteBuffer().array(), getTestFile());


      Assert.assertEquals(str1, readBuffer.readUTF());
      Assert.assertEquals(str2, readBuffer.readString());
      Assert.assertEquals(d1, readBuffer.readDouble());
      Assert.assertEquals(f1, readBuffer.readFloat());


      readBuffer.readerIndex(0);


      Assert.assertEquals(str1, readBuffer.readUTF());
      Assert.assertEquals(str2, readBuffer.readString());
      Assert.assertEquals(d1, readBuffer.readDouble());
      Assert.assertEquals(f1, readBuffer.readFloat());


      readBuffer.close();
   }

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   }


   public void testReadPartialData() throws Exception
   {


      final LargeMessageBufferImpl buffer = new LargeMessageBufferImpl(new FakeConsumerInternal(), 10, 10);


      buffer.addPacket(new FakePacket(-1, new byte[] { 0, 1, 2, 3, 4 }, true, true));


      byte bytes[] = new byte[30];
      buffer.readBytes(bytes, 0, 5);


      for (byte i = 0; i < 5; i++)
      {
         Assert.assertEquals(i, bytes[i]);
      }


      final CountDownLatch latchGo = new CountDownLatch(1);


      final AtomicInteger errorCount = new AtomicInteger(0);


      Thread t = new Thread()
      {
         @Override
         public void run()
         {


            try
            {
               latchGo.countDown();
               buffer.readBytes(new byte[5]);
            }
            catch (IndexOutOfBoundsException ignored)
            {
            }
            catch (IllegalAccessError ignored)
            {


            }
            catch (Throwable e)
            {
               e.printStackTrace();
               errorCount.incrementAndGet();
            }
         }
      };


      t.start();


      latchGo.await();


      buffer.cancel();


      t.join();


      Assert.assertEquals(0, errorCount.get());

View Full Code Here


   }


   public void testInterruptData() throws Exception
   {
      LargeMessageBufferImpl readBuffer = splitBuffer(3, new byte[] { 0, 1, 2, 3, 4 });


      byte bytes[] = new byte[30];
      readBuffer.readBytes(bytes, 0, 5);


      for (byte i = 0; i < 5; i++)
      {
         Assert.assertEquals(i, bytes[i]);
      }

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      }
   }
   
   public void testSplitBufferOnFile() throws Exception
   {
      LargeMessageBufferImpl outBuffer = new LargeMessageBufferImpl(new FakeConsumerInternal(),
                                                                          1024 * 1024,
                                                                          1,
                                                                          getTestFile(),
                                                                          1024);
      try
      {


         long count = 0;
         for (int i = 0; i < 10; i++)
         {
            byte buffer[] = new byte[10240];
            for (int j = 0; j < 10240; j++)
            {
               buffer[j] = getSamplebyte(count++);
            }
            outBuffer.addPacket(new FakePacket(1, buffer, true, false));
         }


         outBuffer.readerIndex(0);


         for (int i = 0; i < 10240 * 10; i++)
         {
            assertEquals("position " + i, getSamplebyte(i), outBuffer.readByte());
         }


         outBuffer.readerIndex(0);


         for (int i = 0; i < 10240 * 10; i++)
         {
            assertEquals("position " + i, getSamplebyte(i), outBuffer.readByte());
         }
      }
      finally
      {
         outBuffer.close();
      }


   }

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