peteratdennis/event-bridge-example

Using AWS Event Bridge

Event Bridge Example

Using AWS Event Bridge

Useful links:

• https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-what-is.html
• https://www.serverless.com/framework/docs/providers/aws/events/event-bridge/
• https://www.serverless.com/blog/eventbridge-use-cases-and-tutorial
• https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/EventBridge.html#putEvents-property

Deploy

Build the dependencies: yarn

First deploy the infrastructure (the custom event bus).

• export a name for the service: export EVENTBRIDGE_EXAMPLE_INFRA_SERVICE=my-eventbridge-infrastructure

Then the functions that use the bridge can be deployed.

• export a name for the service: export EVENTBRIDGE_EXAMPLE_SERVICE=my-eventbridge
• deploy: yarn deploy

Examples of using the event bus and events being consumed by all consumers in the various stacks are provided in sls-a.yml and sls-b.yml.

Functions

yarn sls invoke --function Producer --data='{"some": "stuff", "foo": "bar"}'
will cause both the functions Consumer & ConsumerTwo to be called.

ConsumerTwo is configured to only trigger if the event (--data) contains foo with a value of bar so
yarn sls invoke --function Producer --data='{"some": "stuff"}'
will only trigger the Consumer function NOT the ConsumerTwo function.

sls-a

Calling the producer in the sls-a stack will trigger the event listeners in the other stack(s)
yarn sls invoke -c sls-a.yml --function ProducerA --data='{"src": "service A"}'