caps-cloud

CAPS system hosted on AWS via SNS and SQS

Technologies

• AWS SNS
• AWS SQS
• Node.js
• sqs-consumer
• nanoid

Driver Node.js Module

• polls SQS packages-drivers.fifo queue for messages
• publishes messages to SNS delivered.fifo topic

Vendor Node.js Module

• publishes messages to SNS pickup topic
• polls SQSmdelivered-vendors.fifo queue

Vendor-Driver Communication

1. vendor publishes pickup message to SNS pickup.fifo topic
2. pickup.fifo sends message to SQS packages-drivers.fifo queue
3. driver recieves pickup message by polling SQS packages.fifo queue
4. upon recipt of pickup message, driver waits 5 seconds and then publishes delivered message to SNS delivered.fifo topic
5. delivered.fifo topic sends message to SQS delivered-vendors.fifo queue
6. vendor recieves delivered message by polling delivered-vendors.fifo queue

Vendor-Driver Communication - Terminal Activity

AWS SNS Topics

pickup.fifo

delivered.fifo

AWS SQS Queues

packages-drivers.fifo queue

delivered-vendors.fifo queue

UML