StorageReplyQueue.java

/*************************************************************************
 * Copyright 2009-2012 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
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package edu.ucsb.eucalyptus.ic;

import edu.ucsb.eucalyptus.cloud.*;
import edu.ucsb.eucalyptus.msgs.BaseMessage;
import edu.ucsb.eucalyptus.msgs.EucalyptusErrorMessageType;
import edu.ucsb.eucalyptus.msgs.EucalyptusMessage;
import edu.ucsb.eucalyptus.msgs.StorageErrorMessageType;
import edu.ucsb.eucalyptus.util.ReplyCoordinator;

import org.apache.commons.httpclient.HttpStatus;
import org.apache.log4j.Logger;
import org.mule.message.ExceptionMessage;

import com.eucalyptus.binding.BindingManager;

public class StorageReplyQueue {

    private static Logger LOG = Logger.getLogger( StorageReplyQueue.class );

    private static ReplyCoordinator replies = new ReplyCoordinator( 3600000 );

    public void handle( EucalyptusMessage msg )
    {
        Logger.getLogger( StorageReplyQueue.class ).warn( "storage queueing reply to " + msg.getCorrelationId() );
        replies.putMessage( msg );
    }

    public void handle( ExceptionMessage muleMsg )
    {
        try
        {
            Object requestMsg = muleMsg.getPayload();
            String requestString = requestMsg.toString();
            BaseMessage msg = ( BaseMessage ) BindingManager.getDefaultBinding( ).fromOM( requestString );
            Throwable ex = muleMsg.getException().getCause();
            StorageErrorMessageType errMsg = null;

            if ( ex instanceof NoSuchVolumeException )
            {
                errMsg = new StorageErrorMessageType( "NoSuchVolume", "Volume not found", HttpStatus.SC_NOT_FOUND, msg.getCorrelationId());
                errMsg.setCorrelationId( msg.getCorrelationId() );
            }
            else if ( ex instanceof VolumeInUseException )
            {
                errMsg = new StorageErrorMessageType( "VolumeInUse", "Volume in use", HttpStatus.SC_FORBIDDEN, msg.getCorrelationId());
                errMsg.setCorrelationId( msg.getCorrelationId() );
            }
            else if ( ex instanceof NoSuchSnapshotException )
            {
                errMsg = new StorageErrorMessageType( "NoSuchSnapshot", "Snapshot not found", HttpStatus.SC_NOT_FOUND, msg.getCorrelationId());
                errMsg.setCorrelationId( msg.getCorrelationId() );
            }
            else if ( ex instanceof VolumeAlreadyExistsException )
            {
                errMsg = new StorageErrorMessageType( "VolumeAlreadyExists", "Volume already exists", HttpStatus.SC_CONFLICT, msg.getCorrelationId());
                errMsg.setCorrelationId( msg.getCorrelationId() );
            }
            else if ( ex instanceof VolumeNotReadyException )
            {
                errMsg = new StorageErrorMessageType( "VolumeNotReady", "Volume not ready yet", HttpStatus.SC_CONFLICT, msg.getCorrelationId());
                errMsg.setCorrelationId( msg.getCorrelationId() );
            }
            else if ( ex instanceof SnapshotInUseException )
            {
                errMsg = new StorageErrorMessageType( "SnapshotInUse", "Snapshot in use", HttpStatus.SC_CONFLICT, msg.getCorrelationId());
                errMsg.setCorrelationId( msg.getCorrelationId() );
            }
            else
            {
                replies.putMessage( new EucalyptusErrorMessageType( muleMsg.getComponentName() , msg, ex.getMessage()) );
            }
            if( errMsg != null ) {
              replies.putMessage( errMsg );
            }
        }
        catch ( Exception e )
        {
            LOG.error(e);
        }
    }

    public static BaseMessage getReply( String msgId )
    {
        Logger.getLogger( StorageReplyQueue.class ).warn( "storage request for reply to " + msgId );
        BaseMessage msg = replies.getMessage( msgId );
        Logger.getLogger( StorageReplyQueue.class ).warn( "storage obtained reply to " + msgId );
        return msg;
    }
}