Examples of org.jboss.util.stream.MarshalledValueInputStream

org.jboss.util.stream.MarshalledValueInputStream
An ObjectInputStream subclass used by the MarshalledValue class to ensure the classes and proxies are loaded using the thread context class loader. @author Scott.Stark@jboss.org @version $Revision: 37406 $

   @Override
   public RegionalizedMethodCall regionalizedMethodCallFromByteBuffer(byte[] buf) throws Exception
   {
      Marshaller marshaller;
      int versionId;
      ObjectInputStream in = new MarshalledValueInputStream(new ByteArrayInputStream(buf));


      try
      {
         versionId = in.readShort();
         if (trace) log.trace("Read version " + versionId);
      }
      catch (Exception e)
      {
         log.error("Unable to read version id from first two bytes of stream, barfing.");

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         // actually attempt to "stream" this stuff.  We need to revert to an old-fashioned Object Input Stream since
         // we don't have a reusable implementation for non-byte-backed streams as yet.
         short versionId;
         Marshaller marshaller;


         ObjectInputStream in = new MarshalledValueInputStream(is);


         try
         {
            versionId = in.readShort();
            if (trace) log.trace("Read version " + versionId);
         }
         catch (Exception e)
         {
            log.error("Unable to read version id from first two bytes of stream, barfing.");

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      {
         try
         {
            ByteArrayInputStream bais = new ByteArrayInputStream(raw);
            // use a MarshalledValueInputStream since it needs to be aware of any context class loaders on the current thread.
            ObjectInputStream ois = new MarshalledValueInputStream(bais);
            instance = ois.readObject();
            ois.close();
            bais.close();
//            raw = null;
         }
         catch (Exception e)
         {

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      //os.close();
      assertTrue(baos.size() > 0);
      loader.remove(X);


      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      //is.close();
      assertEquals("X found", true, loader.exists(X));
      loader.remove(X);
   }

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      {
         log.debug("transferred state is null (may be first member in cluster)");
         return;
      }
      ByteArrayInputStream bais = new ByteArrayInputStream(new_state);
      MarshalledValueInputStream in = null;
      try
      {
         in = new MarshalledValueInputStream(bais);
         stateTransferManager.setState(in, Fqn.ROOT);
         stateReceivedSuccess();
      }
      catch (Throwable t)
      {

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      if (istream == null)
      {
         log.debug("stream is null (may be first member in cluster)");
         return;
      }
      MarshalledValueInputStream in = null;
      try
      {
         in = new MarshalledValueInputStream(istream);
         stateTransferManager.setState(in, Fqn.ROOT);
         stateReceivedSuccess();
      }
      catch (Throwable t)
      {

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      {
         log.debug("partial transferred state is null");
         return;
      }


      MarshalledValueInputStream in = null;
      String targetRoot = state_id;
      boolean hasDifferentSourceAndIntegrationRoots = state_id.indexOf(StateTransferManager.PARTIAL_STATE_DELIMITER) > 0;
      if (hasDifferentSourceAndIntegrationRoots)
      {
         targetRoot = state_id.split(StateTransferManager.PARTIAL_STATE_DELIMITER)[1];
      }
      try
      {
         log.debug("Setting received partial state for subroot " + state_id);
         Fqn subroot = Fqn.fromString(targetRoot);
//            Region region = regionManager.getRegion(subroot, false);
//            ClassLoader cl = null;
//            if (region != null)
//            {
//               // If a classloader is registered for the node's region, use it
//               cl = region.getClassLoader();
//            }
         ByteArrayInputStream bais = new ByteArrayInputStream(state);
         in = new MarshalledValueInputStream(bais);
         //getStateTransferManager().setState(in, subroot, cl);
         stateTransferManager.setState(in, subroot);
         stateReceivedSuccess();
      }
      catch (Throwable t)

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   }


   public void setState(String state_id, InputStream istream)
   {
      String targetRoot = state_id;
      MarshalledValueInputStream in = null;
      boolean hasDifferentSourceAndIntegrationRoots = state_id.indexOf(StateTransferManager.PARTIAL_STATE_DELIMITER) > 0;
      if (hasDifferentSourceAndIntegrationRoots)
      {
         targetRoot = state_id.split(StateTransferManager.PARTIAL_STATE_DELIMITER)[1];
      }
      if (istream == null)
      {
         log.debug("stream is null (may be first member in cluster). State is not set");
         return;
      }


      try
      {
         log.debug("Setting received partial state for subroot " + state_id);
         in = new MarshalledValueInputStream(istream);
         Fqn subroot = Fqn.fromString(targetRoot);
//            Region region = regionManager.getRegion(subroot, false);
//            ClassLoader cl = null;
//            if (region != null)
//            {

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      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();


      Object txnKey = new Object();
      loader.prepare(txnKey, mods, false);
      loader.commit(txnKey);
      try
      {
         loader.commit(txnKey);
         fail();
      }
      catch (IllegalArgumentException expected)
      {
      }
      try
      {
         loader.rollback(txnKey);
         fail();
      }
      catch (IllegalArgumentException expected)
      {
      }


      /* Commit and rollback after rollback. */
      bais = new ByteArrayInputStream(baos.toByteArray());
      is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();
      txnKey = new Object();
      loader.prepare(txnKey, mods, false);
      loader.rollback(txnKey);
      try
      {

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      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();


      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      bais = new ByteArrayInputStream(baos.toByteArray());
      is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();


      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      assertEquals(null, loader.get(FQN));


      /* Use a complex object to ensure that the class catalog is used. */
      Complex c1 = new Complex();
      Complex c2 = new Complex(c1);


      /* Add objects. */
      loader.put(FQN, 1, c1);
      loader.put(FQN, 2, c2);
      assertEquals(c1, loader.get(FQN).get(1));
      assertEquals(c2, loader.get(FQN).get(2));
      assertEquals(2, loader.get(FQN).size());


      /* Save state. */
      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      assertTrue(baos.size() > STREAM_HEADER_LENGTH);
      os.close();


      byte[] savedState = baos.toByteArray();


      /* Clear state. */
      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();
      bais = new ByteArrayInputStream(baos.toByteArray());
      is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();


      assertEquals(null, loader.get(FQN));


      /* Restore state. */
      bais = new ByteArrayInputStream(savedState);
      is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();
      assertEquals(c1, loader.get(FQN).get(1));
      assertEquals(c2, loader.get(FQN).get(2));
      assertEquals(2, loader.get(FQN).size());


      stopLoader();

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