Recent changes to feature-requests

Inconsistency with OMG Specification

Nima Sharifi Mehr — Tue, 04 Jan 2005 14:17:59 -0000

Dear OpenORB developers,

I found that some inconsistencies with OMG specification
in OpenORB Concurrency Control Service is available
which are very crucial in practice and have been
overlooked in it's implementation:

1 - In the implementation of LockSet's "lock" method you
should notice that it can be called on behalf of a implicit
transaction and if this call blocked and the transaction
be aborted then the call should return with the
Transactions::TransactionRolledBack exception.

2 - A lock can be held multiple times in the same mode
then you should use some solutions such as a counter
for managing this situation.

3 - the "get_coordinator" method in LockSet interface
has been ruined,why?

Network address rewriting

Kresimir Tonkovic — Wed, 29 Sep 2004 13:05:04 -0000

I have added a feature to OpenORB that my company
needs, so I hereby submit the changes.

Feature info:

Problem:
We are integrating one of our products with a
customer's CORBA service. Since the components are only
connected through the public internet, they are
protected with firewalls, and a NAT router. The router
rewrites network addresses in TCP packets, so what the
NamingService behind the router sees as one address is
not visible from the other side of the router. The
problem is that the NamingService redirects connections
to business objects using the addresses it sees, but
which are unusable from behind the router.

As a possible solution, there are commercial IIOP
proxies in the market that analyze IIOP messages and
rewrite network addresses using rules similar to those
the router uses to rewrite addresses in TCP packets.

The patch contains code that implements network address
rewriting in OpenORB, in a layer between sockets and
IIOPTransport. I think this is the appropriate layer
because this rewriting is in fact only a network
service. The rewriting mechanism is very simple, but
sufficient for our needs. If more complex requirements
arise, the mechanism can be easily expanded.

To configure rewriting, one should edit his OpenORB.xml
file and modify the user-mods profile, like this:

<profile name="user-mods" >
<import
xlink:href="${openorb.home}config/default.xml#InitRef">
<property name="NameService"

value="corbaloc:iiop:1.2@192.168.180.20:22001/NameService"
/>
<property name="iiop.addressRewritingRule.1"
value="192.168.180.20->10.48.11.30"/>
<property name="iiop.addressRewritingRule.2"
value="192.168.180.21->10.48.11.30"/>
</import>
</profile>

The "192.168.180.20" addresses are what the
NamingService sees, and "10.48.11.30" is what the
client sees from the other side of the router. Human
readable addresses can also be used, it is only
neccessary to use the arrow ("->") to separate
addresses and specify what is being rewritten to what.

The changes are against the OpenORB 1.3.1 release, but
modifyintg them to 1.4 should be no problem. My company
needs a stable release right now, hence 1.3.1.

Persistence of Channels and Events

Satish Boggavarapu — Thu, 22 Jul 2004 04:33:08 -0000

Persistence hasn't been implemented in to notification
service yet. Some time back Lars mentioned he has a
major re-write/cleanup of NotificationService. Would be
nice to have it for 1.4 final release or atleast 1.4.1.

IDLCompiler-Enhancement to support toString & equals methods

Saravanan Subbiah — Wed, 07 Jul 2004 01:20:55 -0000

IDL compiler needs to be enhanced to generate toString
method and equals methods to all IDL structs and unions.

toString and equals are two most used methods in Java
and generating these methods makes it easy to use
structs and unions.

Someother implementations of CORBA are know to generate
these methods.

thanks !

CCM

Alex Andrushchak — Wed, 27 Aug 2003 12:11:16 -0000

Implementation of CORBA Component Model

Robust PSS implementation

Alex Andrushchak — Wed, 27 Aug 2003 12:10:13 -0000

Robust, fast PSS implementation

openorb_notify_plugin-1.4.0.jar

crashsky — Wed, 09 Apr 2003 00:31:58 -0000

Can't Create Proxy consumer

data compression

Anonymous — Fri, 06 Sep 2002 10:30:39 -0000

is possible to compress mashalled data to reduce the
load of communication

idl2http, multiply source files

Viacheslav Tararin — Tue, 27 Aug 2002 06:49:24 -0000

Make allow idl2http compile multiply source file. Need
to make doc's on several IDL files.

install target builds a dir. structure

Anonymous — Wed, 17 Jul 2002 21:37:49 -0000

Could it be possible that the install target build a
directory structure that resembles the one created by
the pre-compiled .tar.gz package? This way it would be
the same either to install the .tar.gz or to run
./build.sh install