Created
April 8, 2020 19:51
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order_created() event handler subscribed to `order` events
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def order_created(self, _item): | |
if _item.event_action != 'entity_created': | |
return | |
order = json.loads(_item.event_data) | |
rsp = send_message('read-model', 'get_entity', {'name': 'cart', 'id': order['cart_id']}) | |
cart = rsp['result'] | |
result = self._decr_from_cart(cart) | |
order['status'] = 'IN_STOCK' if result else 'OUT_OF_STOCK' | |
self.event_store.publish('order', create_event('entity_updated', order)) |
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02
guard wrong event05
parse payload, i.e. anorder
06
getcart
oforder
fromread model
08
check and decrement inventory09
set status according to result10
publish updated event