def handler(event, _):
"""
Lambda function handler for Products Table stream
"""
logger.debug({
"message": "Input event",
"event": event
})
logger.debug({
"message": "Records received",
"records": event.get("Records", [])
})
events = [
ddb_to_event(record, EVENT_BUS_NAME, "ecommerce.products", "Product", "productId")
for record in event.get("Records", [])
]
logger.info("Received %d event(s)", len(events))
logger.debug({
"message": "Events processed from records",
"events": events
})
send_events(events)
def test_ddb_to_event_modify():
"""
Test ddb_to_event() with a MODIFY record
"""
event_bus_name = "EVENT_BUS_NAME"
source = "SOURCE"
object_type = "Object"
resource_key = "pk"
record = {
"awsRegion": "eu-west-1",
"dynamodb": {
"Keys": {
"pk": {"N": "123"},
"sk": {"N": "456"}
},
"NewImage": {
"SomeKey": {"S": "SomeValue"}
},
"OldImage": {
"SomeOtherKey": {"N": "123456"}
},
"SequenceNumber": "1234567890123456789012345",
"SizeBytes": 123,
"StreamViewType": "NEW_AND_OLD_IMAGES"
},
"eventID": str(uuid.uuid4()),
"eventName": "REMOVE",
"eventSource": "aws:dynamodb",
"eventVersion": "1.0"
}
event = {
"Source": source,
"Resources": ["123"],
"DetailType": "ObjectModified",
"Detail": {
"new": {"SomeKey": "SomeValue"},
"old": {"SomeOtherKey": 123456}
},
"EventBusName": event_bus_name
}
retval = eventbridge.ddb_to_event(record, event_bus_name, source, object_type, resource_key)
for key, value in event.items():
assert key in retval
if key == "Detail":
assert json.loads(value) == event[key]
else:
assert value == event[key]