Create the simplest EventBridge custom event bus subscriber, then publish a test event to it.
A subscriber on an Amazon EventBridge custom event bus delivers events to a single target. This snippet creates the simplest one: with no filter it receives every event on the bus and delivers the payload unchanged, then publishes a test event to it.
A successful publish only means the bus stored the event, so confirm delivery at the target queue. To filter events, add retries and a dead-letter queue, or transform the payload, see the eventbridge-custom-bus-advanced-subscriber snippet.
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AWS CLI
Replace the placeholders with your own ARNs. With no filter, this subscriber receives every event on the bus and delivers the raw payload to the target.
BUS_ARN="<EVENT_BUS_ARN>"
QUEUE_ARN="<TARGET_QUEUE_ARN>"
ROLE_ARN="<DELIVERY_ROLE_ARN>"
aws eventsv2 create-subscriber \
--name "all-events" \
--event-bus-arn "$BUS_ARN" \
--invoke-configuration "$(cat <<EOF
{"TargetArn":"$QUEUE_ARN","RoleArn":"$ROLE_ARN"}
EOF
)"
Publish a test event
Send an event to the bus with put-raw-events and confirm it reaches the target.
BUS_ARN="<EVENT_BUS_ARN>"
DATA_B64=$(printf '{"detail":{"orderId":"A-1001","status":"PLACED","total":42}}' | base64)
aws eventsv2 put-raw-events \
--event-bus-arn "$BUS_ARN" \
--entries "$(cat <<EOF
[{"Data":"$DATA_B64","SystemMetadata":{"ContentType":"application/json"}}]
EOF
)"
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