We are going to have a microservice to keep all data of the user wallet. We need to have two API to expose them to other microservices.

• get-balance: This API should return a JSON to show the current balance of a user. The parameter which is needed for this API is user_id and the output should be like the below sample:

Input: user_id int

Output: {"balance":4000}

• add-money: This API should add money to the wallet of a user and at the end return the transaction reference number. The parameter which is needed for this API is user_id and amount and the output should be like the below sample:

Input: user_id int amount int (this parameter can be negative)

Output: {"reference_id":12312312312}

Please consider the below points:

• Please Dockerize the project
• Use MySql as a database to store your data
• We need to Save all transaction logs of user
• We need an API to show balance of each user
• We need an API to add money to wallet of user
• We need to have some necessary test cases (just 6 test case to make sure you know about this procedure)
• We need a daily job to calculate total amount of transactions and print it on terminal
• You don’t have to develop any API or service for user, just develop the necessary services which are related to wallet

Please refer to this issue to review the performed tasks. The commits for each task are listed in front of it.