daviddelamo/aircall-test

Alter notification sytem for Aircall

Technical test for Aircall

https://github.com/aircall/technical-test-pager

Use case scenarios to be covered

Given a Monitored Service in a Healthy State,
when the Pager receives an Alert related to this Monitored Service,
then the Monitored Service becomes Unhealthy,
the Pager notifies all targets of the first level of the escalation policy,
and sets a 15-minutes acknowledgement delay

Given a Monitored Service in an Unhealthy State,
the corresponding Alert is not Acknowledged
and the last level has not been notified,
when the Pager receives the Acknowledgement Timeout,
then the Pager notifies all targets of the next level of the escalation policy
and sets a 15-minutes acknowledgement delay.

Given a Monitored Service in an Unhealthy State
when the Pager receives the Acknowledgement
and later receives the Acknowledgement Timeout,
then the Pager doesn't notify any Target
and doesn't set an acknowledgement delay.

Given a Monitored Service in an Unhealthy State,
when the Pager receives an Alert related to this Monitored Service,
then the Pager doesn’t notify any Target
and doesn’t set an acknowledgement delay

Given a Monitored Service in an Unhealthy State,
when the Pager receives a Healthy event related to this Monitored Service
and later receives the Acknowledgement Timeout,
then the Monitored Service becomes Healthy,
the Pager doesn’t notify any Target
and doesn’t set an acknowledgement delay

How to launch the tests

You will need a JDK v11 instaled on your system, once installed run mvnw clean test from the root directory and check that 5 tests were successfully passed, the output should be something like this:

[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.test.aircall.AlertNotificationSystemApplicationTests
[INFO] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.486 s - in com.test.aircall.AlertNotificationSystemApplicationTests
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  11.623 s
[INFO] Finished at: 2021-10-04T09:38:29+02:00
[INFO] ------------------------------------------------------------------------

Guarantees from database

To comply with the requirements from product the Database should be ACID compliance or at least had support for Isolated transactions, this way the Database will take care of the consistency of the data losing some performance in the road.