37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
import requests
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from aws_lambda_powertools.utilities.data_classes import (
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DynamoDBStreamEvent,
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event_source,
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)
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from aws_lambda_powertools.utilities.typing import LambdaContext
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from layercake.dateutils import now
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from layercake.dynamodb import DynamoDBPersistenceLayer, KeyPair
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from boto3clients import dynamodb_client
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from config import API_URL, COURSE_TABLE
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course_layer = DynamoDBPersistenceLayer(COURSE_TABLE, dynamodb_client)
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@event_source(data_class=DynamoDBStreamEvent)
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def lambda_handler(event: DynamoDBStreamEvent, context: LambdaContext) -> bool:
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r = requests.get(f'{API_URL}/courses.json')
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r.raise_for_status()
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data = r.json()
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now_ = now()
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with course_layer.transact_writer() as transact:
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for course in data:
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transact.update(
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key=KeyPair(course['id'], '0'),
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update_expr='SET metadata__unit_price = :unit_price, \
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updated_at = :updated_at',
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expr_attr_values={
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':unit_price': course['metadata']['unit_price'],
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':updated_at': now_,
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},
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)
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return True
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