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[nm-wg] [Fwd: [I2G2-Proto] Announcing the completion of phase 0 of prototype(finally :) )]

FYI. Anyone interested in downloading the code for demo purposes from the development CVS should contact Jeff Boote (boote@internet2.edu) for an account.

-jason
--- Begin Message --- Hello all,

Some good news! We are all glad to let you know that phase 0 of the prototype is now complete! Although a bit overdue, we have managed to achieve what we planned to achieve and in the process, we have gained a significant amount of experience in doing similar work.

---Here is an overview of what was planned---
* Come up with a basic design of service components to ensure design pattern is followed in other services' design so and unnecessary work can be ruled out.
* Provide the capability to retrieve measurement data from RRD (Round Robin Database) files
* * Provide an optimised way of data retrieval. This is to reduce system overheads when data is asked repeatedly.
* * A Web Service interface should be used for this purpose
* * Any defined web service standards should be used
* Use NM-WG version 2 schemas for communications
* Come up with a new format of configuration files which store information about available rrd files and any related meta-data

---Here is what we achieved---
* Generic service design: We have designed interfaces for different components and we strongly think that they can be used for all types of services.
* The capability to retrieve measurement data from RRD has been tested and declared to be working(+). Document/literal style of web services which seems to be the best suited in this case has been used. Optimised data retrieval methods have been put in place.
* NM-WG version 2 schemas have been used for communications. Schemas and example-instances are available
* New format of config file follows NM-WG version 2 schemas designed for storage. Usage of such config files have been tested and declared to be working
* GEANT2 will be providing data for some interfaces on all its routers and for different classes of service. The existing test pilot service will soon start providing real time data.

---Highlights of some things that we have worked on which we see as important for this prototype---
* Generic Design of components of services
* First use of NM-WG version 2 schemas
* Well defined package structure for the project
* Sophisticated logging mechanisms - usage of log4j
* Error and exception handling definitions
* Well managed service properties
* Structured configuration file
* SAX based reading of xml
* In-line documentation using Javadoc
* Easy to use build scripts
and more...

Next steps include some documentation about what we have done and what we have learnt. Efforts are already underway here:
http://monstera.man.poznan.pl/wiki/index.php/Coding_Standards.

We are positive that the delays that we experienced can be seen as initial delays (difficulties at lift off) and shouldn't be the same for later stages.

Best regards,
Loukik.

--
______________________________________________________________________

Loukik Kudarimoti
Network Engineer

DANTE - www.dante.net

Tel: +44 (0)1223 371 300
Fax: +44 (0)1223 371 371
Email: loukik.kudarimoti@dante.org.uk

City House, 126-130 Hills Road
Cambridge CB2 1PQ
UK
_____________________________________________________________________


--- End Message ---