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Wednesday, August 18, 2010

Process vs Tools and Technologies - What should Sri lankan QA community be concerned with?

I have been thinking about discussing the matters related to local QA community in Sri lanka but never got a chance. Recently I was able to meet a lot of folks who are engaged in software quality assurance in various sri lankan organizations in one place at a quality summit. By listening to the presentations and talking with people, I came out with a few basic questions.

Some of them were;
what the biggest concern of software quality assurance in our country? are those processes or tools/technologies? Do we have the necessary trainings or knowledge sharing mechanism to overcome the issues which we face during daily QA tasks?

In my view, the biggest concern of QA in our country is, not having people with enough technical skills. By interviewing a lot of QA folks for the past few years, I personally have a good experience about the way people are approaching QA. Most fresh graduates believe that QA as a first step towards entering in to software industry! Some people joins QA merely to get some understanding about the product/project then move in to business analysis or sales.
Why is this? IMO, it is totally due to the perception of software QA in sri lanka. We, sri lankan QA community, must be responsible for drawing that image on people's minds about QA.
For the past few years, I never noticed any training (were there any?) for educating QA community about the usage of tools in daily QA tasks to be more productive or technical aspects such as performance/automation testing tools. Instead, whenever there is something about QA, it is about CMMI or process frameworks.
I'm not going to say that those are not important. BUT those are not what our teams need at the moment.
People struggle with configuring application server X on operating system Z. QA folks face in to difficulties when automating AJAX based UIs. How QA should be dealt with the frequent UI changes during UI based test automation? How can we be more productive using linux? Do we use any scripting language for automate repetitive configuration tasks? Are we doing continuous integration? Are QA people familiar with build tools such as Maven or Ant? Do we know about exploratory testing? Do we know how to use test coverage tools? Do we report bugs with the adequate logs and find the root cause of them?

I think these are the questions that most of the QA teams have. We should try to be more productive and be experts as a community. We should try to change the perceptive about QA by empowering everyone with the right set of skills.

If people are comfortable with the tools and technology they are handling in daily work life, educating them about processes and process improvements is not a big thing!

Saturday, August 14, 2010

How to deploy WSO2 ESB-3.X on Apache Tomcat


I have noticed a lot of different articles, blog posts with instructions on deploying WSO2 ESB on Apache tomcat. But I observed that most of them are obsolete and the guidelines are not applicable for the latest ESB versions. Therefore, I thought to put together the steps of setting up WSO2 ESB-3.X versions on Apache Tomcat-6.X

Step 1:
Download WSO2 ESB-3.X. Extract the downloaded zip and copy repository and resources directories in to a new folder. Say it is esb-repo (i.e:- /home/user/esb-repo)

Step 2:
Lets refer to your tomcat installation directory, CATALINA_HOME. Go to CATALINA_HOME\webapps directory and create a new directory, esb.
Now, copy wso2esb-3.0.0\webapps\ROOT\WEB-INF to CATALINA_HOME\webapps\esb
Also, copy wso2esb-3.0.0\lib\log4.properties file to CATALINA_HOME\webapps\esb\WEB-INF\classes

Step 3:
Next, we need to enable https in tomcat. Therefore, edit CATALINA_HOME\conf\server.xml by adding the following entry.

<Connector port="8443" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" disableUploadTimeout="true"
acceptCount="100" scheme="https" secure="true" SSLEnabled="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile = "/home/user/esb-repo/resources/security/wso2carbon.jks"

Make sure to give the exact location of wso2carbon.jks as highlighted above.

Step 4
We have done the configurations required in tomcat. Now, we must do the necessary configurations in a set of config files shipped with WSO2 ESB. We will update carbon.xml, axis2.xml, registry.xml and user-mgt.xml which can be found at esb-repo/repository/conf directory.

First, open carbon.xml and update the ServerURL element as follows.


Note that we have configured tomcat to run on 8443 port.

When we deploy ESB on an application server, it uses the http/https transport provided by the servlet container when communicating with registry. Therefore, we must update the registry HTTP port in carbon.xml. In order to do that, uncomment and update the following element in carbon.xml.


Thats all we need to update in carbon.xml, save and close the file.

Next, open registry.xml and update DB URL as follows.


Now, open user-mgt.xml and update user management database URL as follows.

<Property name='url'>jdbc:h2:/home/user/esb-repo/repository/database/WSO2CARBON_DB</Property>

Make sure to specify the absolute path of the WSO2CARBON_DB in both of the above elements.

Next, we need to configure a few elements in esb-repo/repository/conf/axis2.xml file.

Locate NIO HTTPS transport listener (HttpCoreNIOSSLListener) element and specify the absolute path of keystore and truststore locations as follows.



Similarly update the keystore and trustore paths of NIO HTTPS transport sender (HttpCoreNIOSSLSender)

We should also specify the absolute path of synapse-config directory as follows.

<parameter name='SynapseConfig.ConfigurationFile' locked='false'>/home/charitha/products/esb/esb-repo/repository/conf/synapse-config</parameter>

Step 5
We have almost completed the required configurations. Now, open a new shell and change the directory to CATALINA_HOME/bin.
Define an environment variable called CARBON_HOME and set the path to your esb-repo directory.

In windows; set CARBON_HOME=C:\esbs\esb-repo
In linux; export CARBON_HOME=\home\user\esb-repo

Start tomcat from the same command window/shell.
catalina.sh run

WSO2 ESB will be started successfully. You can access the management console using https:\\localhost:8443\esb\carbon

Thats all! You could follow the above steps and deploy WSO2 ESB-3.X on Tomcat successfully. If you do not like to follow each of the above steps manually, I have written a ruby script to automate the above procedure and install ESB on tomcat. You can download it from here
You just need to specify three directory paths there in esb3.X_tomcat_install_linux.rb and rest of the installation steps will be done automatically by the script.
esb_repo = Any directory in the local file system
CARBON_BIN_HOME= Home directory of ESB binary distribution
CATALINA_HOME= Home directory of the tomcat binary