Christophe Hamerling [Archive]

This blog entry is about how to use the OW2-Dragon SOA Governance with the OW2-PEtALS ESB.

Thanks to the flexible Fractal architecture PEtALS is based on, I have implemented the Dragon API and integrated it into a custom PEtALS distribution.

Here are some screenshots of my tests, I used the JSR181 Service Engine (based on PEtALS CDK and Axis2) to ‘quickly’ create a collection of JBI services with real WSDL descriptions which will be used in Dragon.

All the resources needed (PEtALS, Dragon and JBI artifacts) and their download links are listed at the bottom of this article.

At startup, PEtALS exposes the Dragon API implementation as a web service at http://localhost:9001/petals/ws/DragonService. This address is the one which as to used to fill the ‘Add Runtime Manager’ Dragon section.

Figure 1 – Configure Connector Service

When submitting, Dragon retrieves the PEtALS runtime manager properties and need to synchronize the execution environments to get an updated view of all the containers and their services.

Figure 2 – Sysnchronize execution environments

After synchronization, the Dragon tool has retrieved all the services definitions which are hosted by the PEtALS container. All all this is now referenced in the Dragon registry. For more details on Dragon features, you can get the Dragon user manual here : http://dragon.ow2.org/doc/doc-en/dragon-userguide-0.9.1.pdf .

Figure 3 – List of hosted Services on PEtALS

I just did a quick test and try to search all the services which have an operation which starts by ‘get’. Going to the ‘Search Service’ section and entering ‘get*’ in the search field returns me a list of compliant services.

Figure 4 – Searching Services

Resources

The Dragon Web Application : http://download.forge.objectweb.org/dragon/dragon-0.9.1.war

The PEtALS-Dragon Enabled standalone distribution : http://maven.objectweb.org/maven2-snapshot/org/ow2/petals/petals-standalone-dragon/1.0-SNAPSHOT/petals-standalone-dragon-1.0-20090116.150059-1-light.zip

The JSR181 Service engine : http://maven.objectweb.org/maven2-snapshot/org/ow2/petals/petals-se-jsr181/1.1-SNAPSHOT/petals-se-jsr181-1.1-20090116.152803-72.zip

The Service Assembly : http://maven.objectweb.org/maven2-snapshot/org/ow2/petals/su/jsr181/sa-jsr181-collection/1.0-SNAPSHOT/sa-jsr181-collection-1.0-20090116.151044-1.zip

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The Dragon SOA Governance solution (http://dragon.ow2.org) has just been released. Dragon is a high performance SOA Governance solution. It allows you organize, enforce and reconfigure your Service Oriented infrastructure.

There are a lot of cool features and as you can see in the following figure and one of the main goals is to connect Dragon to existing SOA platforms such as PEtALS ESB (http://petals.ow2.org).

I have worked with the Olivier (the Dragon product leader) to define the connector API and I have implemented it on the PEtALS side.

I hope publish a PEtALS snapshot this month wich will be connected to Dragon… Stay  tuned !

Governance, dragon dragon, Governance, ow2, PEtALS, soa

You can now follow me on Twitter : http://twitter.com/chamerling

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