2024-07-09 - Notification Stack Flow

Service Stack - Notifications

Overview

Service - Activity Switchboard

• Receives most messages sent within the entire project's serverless flow from subscribe to In or Out Topics of external services
• Allows services to register a set of triggers that are checked when each message is received
• If all triggers pass a message is sent to OutTriggerGroupPassed for subscribed services. eg. Notifition Manager

Service - Notification Manager

• Subscribe OutTriggerGroupPassed of Activity Swichboard service
• Consolidates or sends notifications to any number of receiver services
• Will be used for user notifications but can have other types of receiver services added
• Notification groups set whether activities are considated (eg per day/per month/per x number of activities)
• If considated activities are stored here until sending is triggered, according to the considation rules. If not consolidated they are sent on immediately

Service - Contact Method Email

• Subscribe OutNewNotification of Notification Manager service
• Send email to user

Flow

Activity Swicthboard: ReceiveMsg

• subscribes to In and Out topics of external services for any number of services
• checkTrigger
  • checkTrigger for topicName
  • checkTrigger for serviceName
  • recursiveCheckProperties in message and checkProperties for each properties
  • checkTrigger for each attributes
• if all triggers of tirggerGroup is match, send message to OutTriggerGroupPassed
• receiverTag gets added to message attributes so can be filtered for by receiving service

Notification Manager: RcvActivityMsg

• subscribes to OutTriggerGroupPassed topic of Service - Activity Switchboard service
• find notificationGroup and setting node by getNodeAndRelationship
• If have setting and consolidated = true ---> save notification message to ConsolidationPending table
• else send message to OutNewNotification topic
• receiverTag gets added to message attributes so can be filtered for by receiving service

Contact Method Email: RcvNotification

• subscribes to OutNewNotification topic of Service - Notification Manager service
• get email that matches userId and uniqueId from Emails table
• send email