In order to illustrate how you can use the Jenkins API to extract live information from Jenkins programmatically, we're going to take a high-level look at a practical example—creating an Information Radiator that fetches Jenkins information and displays it in an external web page. We will not be writing all of the code for this in detail; however, we will analyze the basic building blocks in sufficient detail so that you are able to adopt the general approach and develop your own customized solution in the language of your choice.
Information Radiators are simple but useful live web pages that allow people to easily monitor the status of your most crucial Jenkins jobs in real time. This is quite similar to the IDE plugins we looked at earlier, but instead these indicators are displayed on television screens in an office to radiate the information
The convention for Information Radiators is to keep it simple—to have as few jobs as possible...