cseluzha / reminders

Golang

Reminder Scheduling System

Create a scheduler system using at least two Golang services. The services will work as the backend for an alarm system in which users can create alarms/reminders and share them with other users.

User should be able to create new schduled alarms with just a datetime, a small description and a list of users to send the alarm to.

Acceptance Criteria:

• Create/deploy the backend services needed to support the system described above
• Incoming requests will provide only user ids
• Data should flow in the following manner
  • Upon receiving a schedule request, we need to:
    • Validate that the request data is in correct format
    • Validate the user ids listed in the request
    • If users are valid, we need to create a new reminder entry in the database
    • We also need to start tracking the time until it's time to raise the alarms, use goroutines to do this concurrently
  • Once it is time to trigger an alarm, we should:
    • Retrieve the reminder entry from the database
    • Retrieve the email addresses for the users listed in the reminder entry
    • "Send" the reminder entry with complete info to the output table
• Organize the project code into meaningful packages, look at intro3 for a suggested structure
• Two main services
  • One will be a data API, a simple API app that will retrieve user data from a postgres database.
  • Scheduler, a service that will receive schedule request and will start tracking scheduled alarms
• Database
  • Use a separate schema for users
  • Use a separate schema for scheduled items
  • Use a separate schema for output

users	type
user_id	uuid
email	text

scheduled_items	type
id	uuid
description	text
users	uuid[]

output	type
id	uuid
description	text
emalis	text[]