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Tuesday, December 30, 2008

How to plug service hosting components in to WSO2 ESB

With the revolutionary WSO2 carbon framework, plugging in service hosting components in to WSO2 Enterprise Service Bus (ESB) is just a matter of seconds! It is extremely simple.

WSO2 ESB is an message mediation framework and the service endpoints usually hosted in a separate JVM. However there may be requirements to host the services inside ESB. There are different types of services you can deploy in a service container.

Axis2 web services
Pojo services

EJB services

Data services

Spring web services

Axis1 services
JaxWS services

Now, you can add any of these service hosting components in to your ESB. Lets see how it can be done.

1. Download WSO2 Enterprise Service Bus (ESB) -2.0 beta2
2. Extract the downloaded zip
3. Go to the bin directory in the extracted folder (ESB_HOME/bin) and run wso2server.sh or wso2server.bat
4. Point you browser to the URL https://localhost:9443/carbon and login as an admin (Use "admin", "admin" as the username and password)



5. Suppose you want JAXWS services are hosted in ESB. Then you need to have the jaxws service hosting components. You will be able to download the individual components from WSO2 Oxygen Tank soon. However, we will downlaod WSO2 WSAS-3.0-beta2 and get the components from it. Therefore, please download WSO2 WSAS 3.0-beta2 and extract the downloaded zip file in to local file system. (Lets name the extracted directory as WSAS_HOME)

6. Go to WSAS_HOME/webapps/ROOT/WEB-INF/plugins. You will find a lot of libraries inside that directory.
Copy org.wso2.carbon.jaxwsservices.ui_SNAPSHOT.jar, org.wso2.carbon.jaxwsservices_SNAPSHOT.jar and org.wso2.carbon.jaxws-2.1.jar files and paste them into ESB_HOME/webapps/ROOT/WEB-INF/plugins
7. Restart WSO2 ESB server
8. Log in to ESB management console again. You will find the JAXWS service component is listed in the left menu.



In this way, you can add any of the above service components into ESB. For example, if you want Axis2 service component inside ESB, you just need to copy org.wso2.carbon.aarservices-SNAPSHOT.jar and org.wso2.carbon.aarservices.ui-SNAPSHOT.jar as explained above.

21 comments:

ICARO said...

I try to add the dataservice pluggin from wsas to wso2esb server but it doesn´t work via web admin and via config file .ds.
No log information is provide ...
can you help me please?

Charitha said...

Hi,
You must copy org.wso2.dataservices.core_SNAPSHOT.jar and org.wso2.dataservices.ui_SNAPSHOT.jar included in WSAS_HOME/webapps/ROOT/WEB-INF/plugins directory to ESB_HOME/webapps/ROOT/WEB-INF/plugins to add the data service functionality in to ESB. Please try with WSO2WSAS-3.0-beta3 and WSO2ESB-2.0-beta3 releases.

regards
Charitha

ICARO said...

Hi Charitha,
I use the right versions of the wso2 services wso2esb-2.0-beta3 and wso2wsas-3.0-beta3. I add the plugins for dataservices in the plugins wso2esb directory:
org.wso2.dataservices.core_SNAPSHOT.jar
org.wso2.dataservices.ui_SNAPSHOT.jar
I can see the admin interface to add a new dataservice, but I can´t complete the configuration in the web interface (I try this with firefox and explorer).
When I manually configure de dataservice in a .ds file in repository/dataservices/ the server appears ignore it. The same configuration file works in a standalone wso2wsas server.
The system is a linux Debian, jdk-6u11-linux-i586 and sqlserver jdbc driver installed correctly in wso2esb and wso2wsas.
I´ve searched in mailman archive http://wso2.org/mailarchive/carbon-dev/ and the wso2 website for any issue with no success...
Any idea?
Thank you.
Icaro

Charitha said...

Hi Icaro,
In beta3 releases, Data services UI wizard was not completed. Therefore you may have encountered that configuration UI issue. We are planning to release another beta within few days so that you can try it out.

In ESB , hot deployment set to false by default in axis2.xml. Therefore, you should restart the server after adding a *.dbs file.

Let me know if you need more information on this.

Charitha

ICARO said...

Hi Charitha, it works!!
When hot deployment is enabled and the deployer dbs extension uncoment in axis2.xml:
<deployer extension="dbs" directory="dataservices" class="org.wso2.dataservices.DBDeployer"/>
the server sucessfully expose the dataservice.
I think carbon is very powerfull ;-) good work.
Many thanks for all.

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