Hi Guillaume, This is interesting! Thank you for the tip on ServiceMix. I will take a look in the ServiceMix code.
Do you think it would make sense to send the Poloka proposal to the ServiceMix mailing list? Cheers Serge -----Original Message----- From: Guillaume Nodet [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 03, 2008 5:05 PM To: general@incubator.apache.org Subject: Re: [PROPOSAL] Poloka Btw, Apache ServiceMix also has a JBI service engine implementating WS-BrokeredNotification on top of a JMS broker (which btw saves a lot of work ...). It would be interesting to see if we can come up with something that could be shared by the three projects (Savan, Poloka and ServiceMix) ... On Wed, Aug 20, 2008 at 5:55 PM, Mankovskii, Serge <[EMAIL PROTECTED]> wrote: > I am re-sending this proposal because the first time it ended up in the > Etch proposal thread. Sorry Etch guys! > > ------------ > > > > This is a proposal to enter Poloka in to the incubator. > > > > See http://wiki.apache.org/incubator/PolokaProposal > > > > We do not have a champion at the moment. > > > > We are looking forward to the community input. > > > > > > Cheers > > Serge Mankovski > > -------------- > > > > = POLOKA Project Proposal = > > > > > > == Abstract == > > > > Poloka will be a standalone reference implementation of the > WS-BaseNotification, WS-Topics and the WS-BrokeredNotification > standards. It is aiming to go beyond the WS-BrokeredNotification > specification and deliver a reliable and scalable network of > WS-BrokeredNotification brokers. All existing implementations of > WS-BrokeredNotification focus on implementation of a message broker. > > Poloka will implement additional features that would allow for a > federation of brokers. It will extend WS-BrokeredNotification > specification with the notion of a federated broker network and allow > for a reliable, a scalable and a highly available implementation of the > WS-BrokeredNotification standard. > > > > == Proposal == > > > > Poloka will provide a reference implementation of WS-BaseNotification, > WS-Topics and WS-BrokeredNotification standards. The project will > provide a clear separation of functionality required by the existing > standards from additional functionality provided as an enhancement and > elaboration on the standards > > > > Poloka will: > > 1. not be tightly coupled with WS-RF and WSDM standards > > 1. implement the WS-BrokeredNotification specification absent in > > the Apache Muse project > > 1. will implement a network of brokers that will provide > > scalability, reliability and fault tolerance > > 1. feed implementation and design experiences into the OASIS > > standards process and might lead to new revisions of the WS-Notification > stack of standards > > > > == Background == > > > > Poloka is a second generation of the research project going on for the > last five years at the University of Toronto's Middleware Systems > Research Group under the > [http://research.msrg.utoronto.ca/Padres/WebHome PADRES] project. > > During these years the group developed a stable code base that will form > a base for the first release of Poloka. > > > > The PADRES project has developed a number of new technologies that allow > for a scalable and reliable federation of publish/subscribe brokers. The > PADRES federation mechanisms allow for redundant message routing, load > balancing, complex event processing and other useful features that > become available to the federated network of the WS-BrokeredNotification > brokers. > > > > The project was started before WS-BrokeredNotification standard was > created. The initial release of Poloka will contain existing PADRES code > that does not use any WS-* compliant interfaces. However that will > change with the future releases. PADRES brokers will be enriched with > the WS--Notification interfaces on the notification producer and > notification consumer side. The Broker-to-Broker communication side of > communication is not covered by any existing standards to date and it > would remain non-WS based. > > > > The team engaged in the development of Poloka involves two former > participants of the OASIS committee that produced WS-BaseNotification, > WS-Topics and WS-BrokeredNotification standards. Their engagement would > serve dual purposes: to serve as source if first-hand authoritative > knowledge of the standards and as a conduit for the standards use > experience that might result in future evolution of the > WS-BaseNotification, WS-Topics and WS-BrokeredNotification standards. > > > > A note about the project name; we are inspired by the impact WikiWiki > made on the world of web applications. We followed the naming exampled > set by author of the Wiki and simply translated word "Broker" using a > Hawaiian dictionary. Poloka simply means "Broker" > > > > == Rationale == > > > > Current adoption of the WS-Notification set of standard is impeded by > absence of a standalone reference implementation. For example > WS-Notification implementation in Apache Muse is incomplete and tightly > coupled with programming model of WS-RF specification. It is also > packaged within WSDM implementation. Poloka aims to provide a "clean" > > implementation not tied to other standards as a part of WS-Commons. > > > > The PADRES group have over the years received a number of requests to > release existing code into open source. We are looking forward to Apache > foundation and its organizing principles as a vehicle for creation of a > successful community that would connecting all people already interested > in the release of the code into open source. > > > > The project will follow new standards and specifications that are coming > up in the space of web-services based messaging. > > > > == Initial Goals == > > > > 1. Initial release of the PADRES codebase to Apache Poloka > > 1. Implementation of the WS-Base Notification, WS-Topics and > > WS-Brokered Notification interfaces > > 1. Creation of a reference implementation of the standards with > > non-federated brokers > > 1. Implement Poloka federation based on the functions of the PADRES > > brokers > > > > == Current Status == > > > > The PADRES project has developed a stable code base and a number of > systems are built using this code base. These systems are deployed on > PlanetLab and within the PADRES lab infrastructure (cluster with 25+ > machines). Future deployments on the Amazon Computing Cloud are under > investigation. This code will become a base for the initial release of > Poloka. The team conducted a survey of licensed code used within the > existing code base. The code base can be brought up in compliance with > Apache licensing policy without much effort. One of the members of our > team is already working on the implementation of the > WS-BaseNotification, WS-Topics and WS-BrokeredNotification interfaces. > > Remaining team members are preparing for the code release. > > > > There is one patent application submitted to the US patent office that > covers use of the federated publish/subscribe infrastructure for > Enterprise Job Scheduling. The team is currently working with the > respective IP owners on the patent to ensure compliance with the Apache > licensing policy. > > > > == Meritocracy == > > > > The project was originally started in 2002 by Prof. Hans-Arno Jacobsen > and Serge Mankovski under sponsorship of CA Inc (formerly Computer > Associates), Ontario Centers of Excellence (formerly known as CITO) and > the National Science and Engineering Research Council of Canada. Since > then the project is growing and it became known and respected in the > area of distributed event processing and messaging middleware. > > > > == Community == > > > > Over the years a number of companies expressed interest in this work. At > the moment project research activities are conducted in collaboration > with CA Inc (formerly Computer Associates), IBM, Sun, and Bell Canada, > and the Chinese Academy of Science. The project is managed and organized > within the Middleware Systems Research Group at the University of > Toronto. > > > > The community is built around the papers and publications produced by > the research community and also by conferences and workshops where the > project is presented. > > > > > > == Mentors == > > > > * Dr. Hans-Arno Jacobsen is the head of the Middleware Systems Research > Group and he is leading all current research activities. > > > > * Serge Mankovski is mentoring the project on issues of Network and > Systems Management, Security, Governance and Complex Event Processing. > > > > * Mark Weitzel provides guidance to make sure that the output is > appropriate for the industrial participants. > > > > * Peter Niblett is one of the editors of the WS-BaseNotification, > WS-Topics and WS-BrokeredNotification standards committee and mentoring > the team on these technologies. > > > > * Dr. Kirk Wilson is a member of the WS-BaseNotification, WS-Topics > and WS-BrokeredNotification standards committee and mentoring the team > on these technologies. > > > > == Core Developers == > > > > * Dr. Balasubramaneyam Maniymaran is developing mechanisms for Complex > Event Processing using the PADRES system > > * Vinod Muthusamy is developing publish/subscribe matching algorithms > and routing protocls, > > * Alex Cheung is developing load balancing and scalability features of > the broker federation. > > * Guoli Li is developing composite subscription matching, message > routing and historic data access > > * Reza Sherafat is developing reliability, scalability, fault tolerance > and self-healing features of the broker federation > > * Naweed Tajuddin is developing WS-BaseNotification, WS-Topics and > WS-BrokeredNotification interfaces. > > * Dr. Songlin Hu is developing business process automation solutions > using the PADRES system > > > > == Alignments == > > > > Apache goals, mode of operation and development focus of the WS-Commons > project provide an attractive framework for the inevitable release of > the existing code base to Open Source communities. We are planning to > use Apache Axis2 code as the base for our WS-enabled broker. The > existing team of core developers and project supporters include > representatives of several companies and Apache license is conducive to > their future engagement in the project. There is an existing contact and > working relationships with the Apache Muse project as well. > > > > == Known Risks == > > > > === Orphaned Projects === > > > > Initial contributors are from major software companies and from the > university research community. The development of the related code base > has been steadily growing over the last five years and there is no risk. > > There are a number of requests from various individuals for the Open > Source code developed by the project. We expect that these individuals > will join this project once it becomes publicly available. Current > interest in the project gives us confidence that the community will be > able to broaden the committer base in the future. > > Inexperience with Open Source > > > > The core development team has varied degrees of experience with open > source. Some of the developers released open source code in the past. We > are hoping that Apache PMC and Mentors will help us to get us started > and "hold our hand" until we gained sufficient experience. > > > > The Middleware Systems Research Group has released other open source > projects, such as the AspectC project (about 3500 downloads to date over > a period of 2 years and 8 releases.) AspetC.net is released under GPL > (it is based on GPLed components.) > > > > === Homogeneous Developers === > > > > Most of the current core developers do not work for a commercial entity. > > They are working on the project because it is a subject of their > research and will result in PhD and Master Degrees at some point in the > future. Other core developers are working for CA and IBM and the Chinese > > Academy of Sciences. > > > > The team is collecting a list of persons and institutions that expressed > interest in open source implantation of PADRES over the years. We expect > that this list would give us a good start in building the community > during the incubation period. > > > > === Documentation === > > > > Available in form of publications here > > http://padres.msrg.toronto.edu/Padres/ > > > > === Initial Source === > > > > Initial source is currently in the closed source state. > > > > === Source and Intellectual Property Submission Plan === > > > > The project is currently conducted under terms of a collaboration > agreement between the University of Toronto, CA Canada Company, Sun > Microsystems, and the Ontario Centers of Excellence, and includes a > clause to permit the release of the project IP into open source under > the Eclipse license. However, under current considerations, we think > that the Apache community is more closely aligned with the needs and > goals of the project. Since the Apache license offers very similar IP > terms, it would be acceptable to release the IP under the Apache > license. The team will produce a Certificate of Originality in respect > to all the code released to Apache. > > > > === External Dependencies === > > > > Currently PADRES code relies on Jess expert system shell distributed > under a commercial license by Sandia National Labs. The team will remove > this dependency before the initial release into incubation by > implementing our own version of RETE matching engine. > > > > Other code dependencies are: > > * openjms.jar Exolab License > > * exolabcore 0.3.5.jar: Exolab license > > * j2ee.jar: Apache license v2.0 > > * commons-collections.jar: Apache license v2.0 It uses jung-1.7.6.ja > > * concurrent.jar: SUN license It uses jung-1.7.6.jar. > > * junit.jar: Common Public License v1.0 > > * log4j-1.2.13.jar: Apache license v2.0 > > * mysql-connector.jar: GNU General Public license > > * pg73jdbc3.jar: BSD license > > > > Dependency on Exolab, GNU, BSD and Sun licensed code is localized and > non-essential. > > > > === Cryptography === > > > > Some of the aspects of secure message transport include message > encryption > > > > === Required Resources === > > > > * Mailing Lists - there are two mailing lists > > * Subversion Directory - it exists, but it is not available outside of > the Middleware Systems Research Group > > * Issue Tracking - it exists, but it is not available outside of the > Middleware Research Systems Group > > * Other Resources > > > > == Initial Committers == > > > > * Arno Jacobsen > > * Serge Mankovski > > * NaweedTajuddin > > * Balasubramaneyam Maniymaran > > * Vinod Muthusamy > > * Alex Cheung > > * Guoli Li > > * Reza Sherafat > > > > > > == Affiliations == > > * Hans-Arno Jacobsen - University of Toronto > > * Serge Mankovski - CA Labs > > * Kirk Wilson - CA Labs > > * Peter Niblett - IBM > > * Mark Weitzel - IBM > > * Naweed Tajuddin - University of Toronto > > * Balasubramaneyam Maniymaran - University of Toronto > > * Vinod Muthusamy - University of Toronto > > * Alex Cheung - University of Toronto > > * Guoli Li - University of Toronto > > * Reza Sherafat - University of Toronto > > * Shuang Hou - Academy of Science of China > > > > > > > > == Sponsors == > > * Champion TBD > > * Nominated Mentors TBD > > * Sponsoring Entity TBD, but we think we should be somewhere in > WS-Commons > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > -- Cheers, Guillaume Nodet ------------------------ Blog: http://gnodet.blogspot.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
