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Amazon EventBridge is a powerful AWS service for building event-driven applications. It supports multiple features like event buses, schedulers, pipes, and custom events. A key functionality is reacting to AWS API calls—all API events are sent to the default event bus, allowing you to define rules for automated responses.
This article explores how to define and use custom events with EventBridge, enhancing automation and integration across AWS services.
You Should Know:
1. Setting Up a Custom Event Bus
Create a custom event bus to handle specific event types:
aws events create-event-bus --name MyCustomEventBus
2. Sending Custom Events
Use the AWS CLI to send a custom event:
aws events put-events --entries '[{
"Source": "com.myorg.myapp",
"DetailType": "OrderPlaced",
"Detail": "{ \"orderId\": \"12345\", \"status\": \"pending\" }",
"EventBusName": "MyCustomEventBus"
}]'
3. Creating EventBridge Rules
Define a rule to trigger Lambda when an event matches:
aws events put-rule --name "ProcessOrdersRule" --event-pattern '{
"source": ["com.myorg.myapp"],
"detail-type": ["OrderPlaced"]
}' --event-bus-name "MyCustomEventBus"
4. Adding a Lambda Target
Link the rule to a Lambda function:
aws events put-targets --rule "ProcessOrdersRule" --targets '[{
"Id": "1",
"Arn": "arn:aws:lambda:us-east-1:123456789012:function:ProcessOrder"
}]' --event-bus-name "MyCustomEventBus"
5. EventBridge Scheduler
Schedule recurring events (e.g., daily cleanup):
aws scheduler create-schedule --name "DailyCleanup" --schedule-expression "cron(0 3 ? )" --target '{
"Arn": "arn:aws:lambda:us-east-1:123456789012:function:CleanupTask",
"RoleArn": "arn:aws:iam::123456789012:role/SchedulerExecutionRole"
}'
6. EventBridge Pipes
Stream events from SQS to EventBridge:
aws pipes create-pipe --name "SQSToEventBridge" --source "arn:aws:sqs:us-east-1:123456789012:MyQueue" --target "arn:aws:events:us-east-1:123456789012:event-bus/default" --role-arn "arn:aws:iam::123456789012:role/PipeExecutionRole"
7. Monitoring Events
Check recent events for debugging:
aws logs filter-log-events --log-group-name "/aws/events/MyCustomEventBus" --filter-pattern "{ $.detail-type = \"OrderPlaced\" }"
What Undercode Say
EventBridge is essential for AWS event-driven architectures. By leveraging custom events, rules, and integrations, you can automate workflows efficiently. Key takeaways:
– Use custom event buses for isolated event processing.
– Rules and targets enable real-time reactions to events.
– EventBridge Scheduler replaces outdated CloudWatch Events.
– Pipes simplify event streaming between services.
For deeper insights, read the full article:
Amazon EventBridge — Send & Receive Custom Events
Expected Output:
A fully automated event-driven system in AWS, reacting to custom events with minimal manual intervention.
Prediction
EventBridge will expand with more native integrations, reducing reliance on third-party event brokers. AI-driven event pattern suggestions may emerge.
IT/Security Reporter URL:
Reported By: Darryl Ruggles – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
