Use case:
You are using Amazon Web Service(AWS) Elastic Beanstalk to handle your deployment process via some git version control pipelines and there is a step that needs to run after your code has been deployed successfully.
There are a lot of solutions that can be used e.g CloudWatch, Lambda Function,.. etc. but I decided to invent my own solution that is easy, interesting and will cost 0$ :))
Idea:
Use a unique value on pipeline level (e.g pipeline build number) and add it to new code before upload it to server then call some endpoint or file to check this value. while this value does not equal out the new unique value in the pipeline then the deployment not finished yet and we should wait!
How to add new value to new code?
– we will create special endpoint or file in our project
– in the pipeline before upload new code to server change value of this file eg. deploy_version.txt or endpoint {api_link}/current_version
e.g: set some variable value with a new unique value. (you can do that using e.g sed Unix-like command)
ex.
we have a static endpoint that returns JSON result with the value of currentVersion variable that placed in e.g `version.js`
const currentVersion='123';
in the pipeline before upload code step: - sed -i 2"s/currentVersion='123'/currentVersion='$BITBUCKET_BUILD_NUMBER'/g" src/version.js
How to validate deployment progress?
create a bash script that will send curl request to that endpoint to validate if current version from the endpoint(currently deployed code) is equal to new unique pipeline value or not.
how can this bash script look like? email me for more details(khaledalam.net@gmail.com)