About Me

 

It always seems impossible until it's done

  - Nelson Mandela



Andrzej Korcz

A tech enthusiast who loves to read and write about new technologies and trends.

Popular posts from this blog

Logging Request and Response Body In Spring Boot

Image
  I recently read a Gain Java Knowledge article about logging Spring Boot Request and Response. I really like the idea so I decided to test it in practice. How to logging Spring Boot Request and Response? Request and response body for each endpoint we can print using Servlet Filter. Inside our controller class we will not log any statement but our filter class will log the request and response body for each API call. So this approach will reduce the lines of code and we don’t need to worry about to add log statements in each API to print Request and response body. The Filter class will be used to log requests and responses for each API. LoggingFilter class will extends OncePerRequestFilter class because this is Filter base class that aims to guarantee a single execution per request dispatch, on any servlet container. It provides a doFilterInternal method with HttpServletRequest and HttpServletResponse arguments. Conclusion: In my opinion, this is the best solution to log request...
Read more

Aspect Oriented Programming to trace the requests and responses to a REST method in Spring Boot.

Image
  Aspect Oriented Programming ( AOP ) is one of the key feature of Spring framework. AOP is similar to OOPS concept where it breaks code into multiple reusable modules. AOP provides the capability to dynamically add module at runtime. This is like injecting complete module(logging, cahcing, etc ) in Spring framework dynamically. Logging, caching, security, monitoring, etc. are some of the examples cross cutting concern from AOP. At any point of time there modules can be added dynamically. Spring AOP has interceptors which can intercept application and its methods. This is to perform some extra action at the time of property initiation, method initialization or destroy. Let's try it to create a custom annotation to trace the requests and responses to a REST method in Spring Boot At first you we need to use spring-boot-starter-web and spring-boot-starter-aop dependencies to make it work. STEP1 : An interface with the annotation name @Traceable Now , in whichever method you add the...
Read more

Jenkins docker image with docker inside

Image
  Jenkins  is an open source, Java-based automation server that offers an easy way to set up a continuous integration and continuous delivery (CI/CD) pipeline. Continuous Integration (CI) is the process of automating the build and testing of code every time a team member commits changes to version control. Continuous Delivery (CD) is the process to build, test, configure and deploy from a build to a production environment.    Jenkins docker image with docker inside Step 1/ Create Dockerfile extending the official Alpine image. Then get jenkins.war and docker from official sites. Step 2/ Jenkins admin user setup to set a default admin user and password, by creating a Groovy script file. Step 3/ Adding Plugins to auto install some selected plugins. Step 4/ Build Your Custom Jenkins Image Here  is a fully functional Jenkins server.
Read more