Adding multiple folders to Git

Use below command (in git bash) for add multiple folders to Git.

$ git add -A 

Then can commit changes and push it to the repository.

Find the process running on specific port

On Windows cmd:

Syntax : netstat<space>-ano<space>|<space>find<space>":<port>"

When run the command related to the port 8006 the output will give as below,
Ex:
C:\Users\hal>netstat -ano | find ":8006"
  TCP    127.0.0.1:8006         0.0.0.0:0              LISTENING       5380

Related to the example, "5380" is the process id(PID), then can check the PID through the Task Manager.

Maven build failed with "Fatal error compiling: invalid target release: 1.8 -> [Help 1]"

The below build failed error popped-up  when I try to build (use mvn clean install) the project with Maven.

Error log:

INFO] ------------------------------------------------------------------------
INFO] BUILD FAILURE
INFO] ------------------------------------------------------------------------
INFO] Total time: 3.390 s
INFO] Finished at: 2017-12-09T16:33:24+05:30
INFO] Final Memory: 9M/150M
INFO] ------------------------------------------------------------------------
ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2
:compile (default-compile) on project dpc-portal: Fatal error compiling: invalid
 target release: 1.8 -> [Help 1]
ERROR]

The reason was, I set JAVA_HOME to the JDK 1.7 (as in below image) but try to build using JDK 1.8. So after change the JAVA_HOME to JDK 1.8 version, project was built successfully.

Reference:
https://stackoverflow.com/questions/28291691/fatal-error-compiling-invalid-target-release-1-8-help-1

Enable Wire Logs in WSO2 ESB

In Some situations need to check the incoming(to ESB) or outgoing(from ESB) HTTP headers and the messages. The Wire log functionality is there to handle this requirement. Main underlying transport mechanism of ESB is Passthrough HTTP Transport which handles the HTTP and HTTPS messages. Hence, it can enable wire logs for Passthrough HTTP Transport as below.

WSO2 ESB 4.7.0 or higher versions.

1. Open log4j.properties file.

log4j.properties file is located in <EBB_HOME>/repository/conf directory.

2. Un-comment the following entry.

log4j.logger.org.apache.synapse.transport.http.wire=DEBUG

3. Save the file and restart the server to affect the changes.

In the older versions, it is bit different than the new versions.

For ESB 4.6.0 :

log4j.logger.org.apache.synapse.transport.passthru.wire=DEBUG

For ESB 4.5.1 or previous versions :

log4j.logger.org.apache.synapse.transport.nhttp.wire=DEBUG

To see HTTP headers and messages of Callout mediator/MessageProcessor.

1. Open log4j.properties file.

2. Un-comment the following two entries.

log4j.logger.httpclient.wire.header=DEBUG

log4j.logger.httpclient.wire.content=DEBUG

3. Save the file and restart the server to affect the changes.

NOTE: Wire logs should enable only for a troubleshooting purposes, not recommended for the systems in the production environment.

Changing User Passwords In WSO2 ESB.

In this blog, I will explain the way to change the password [1] of the WSO2 ESB (or User Passwords in the Carbon Database). Here I used ESB 4.9.0 version.

What you need to do is run the chpasswd script inside the <PRODUCT_HOME>/bin/ directory.
For an example, I need to change the admin password. So I pass the "username" command line argument also. If we do not provide these as command line arguments, it will be prompted for it during the execution time.

These are the steps you need to follow.

1. Extract the fresh ESB 4.9.0 instance.
2. Start the server.
3. Shutdown the server.
4. Run the below command and set the new password.

• For Linux: ./chpasswd.sh --username "admin" --db-url "jdbc:h2:repository/database/WSO2CARBON_DB"
• For Windows: chpasswd.bat --username "admin" --db-url "jdbc:h2:repository/database/WSO2CARBON_DB"

5. Start the server.
6. Login from the new password and it will log you into the Management Console.

Reference:

[1] https://docs.wso2.com/display/Carbon440/Changing+User+Passwords+in+the+Carbon+Database

Install SoapUI using .sh file in Ubuntu.

* Download SoapUI<version>.sh file (linux installer) and try out following commands in the Terminal.

$ sudo chmod +x SoapUI<version>.sh
$ ./SoapUI<version>.sh

* Note : Replace the name of the file according the downloaded version of the SOAP UI.

* It will run as following screen shot and prompt you to the installation window.

'OPTION SQL_SELECT_LIMIT=DEFAULT' MySQL Error

I got this 'OPTION SQL_SELECT_LIMIT=DEFAULT' error when I try to mount the WSO2 ESB registry partitions into MySQL.

In here I used the mysql-connector-java-5.0.8-bin.jar version as a jdbc connector for MySQL. It seems like a bug in MySQL.
As it said in this stackoverflow link [1] mysql-connector-java 5.1.22 and newer versions are fine. So I download mysql-connector-java-5.1.34-bin.jar version and used.

Note: Before restarting the ESB server, have to clear 'dropins' folder in <ESB_HOME>/repository/components/dropins

Cool... Then it's working fine.

Reference links :
[1] http://stackoverflow.com/questions/15669270/option-sql-select-limit-default