crawlee-python/docs/introduction/code_examples/08_routes.py

73 lines
2.3 KiB
Python

from crawlee.crawlers import PlaywrightCrawlingContext
from crawlee.router import Router
router = Router[PlaywrightCrawlingContext]()
@router.default_handler
async def default_handler(context: PlaywrightCrawlingContext) -> None:
# This is a fallback route which will handle the start URL.
context.log.info(f'default_handler is processing {context.request.url}')
await context.page.wait_for_selector('.collection-block-item')
await context.enqueue_links(
selector='.collection-block-item',
label='CATEGORY',
)
@router.handler('CATEGORY')
async def category_handler(context: PlaywrightCrawlingContext) -> None:
# This replaces the context.request.label == CATEGORY branch of the if clause.
context.log.info(f'category_handler is processing {context.request.url}')
await context.page.wait_for_selector('.product-item > a')
await context.enqueue_links(
selector='.product-item > a',
label='DETAIL',
)
next_button = await context.page.query_selector('a.pagination__next')
if next_button:
await context.enqueue_links(
selector='a.pagination__next',
label='CATEGORY',
)
@router.handler('DETAIL')
async def detail_handler(context: PlaywrightCrawlingContext) -> None:
# This replaces the context.request.label == DETAIL branch of the if clause.
context.log.info(f'detail_handler is processing {context.request.url}')
url_part = context.request.url.split('/').pop()
manufacturer = url_part.split('-')[0]
title = await context.page.locator('.product-meta h1').text_content()
sku = await context.page.locator('span.product-meta__sku-number').text_content()
price_element = context.page.locator('span.price', has_text='$').first
current_price_string = await price_element.text_content() or ''
raw_price = current_price_string.split('$')[1]
price = float(raw_price.replace(',', ''))
in_stock_element = context.page.locator(
selector='span.product-form__inventory',
has_text='In stock',
).first
in_stock = await in_stock_element.count() > 0
data = {
'manufacturer': manufacturer,
'title': title,
'sku': sku,
'price': price,
'in_stock': in_stock,
}
await context.push_data(data)