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"""
Item pipeline
See documentation in docs/item-pipeline.rst
"""
from __future__ import annotations
from typing import TYPE_CHECKING, Any
from scrapy.middleware import MiddlewareManager
from scrapy.utils.conf import build_component_list
from scrapy.utils.defer import deferred_f_from_coro_f
if TYPE_CHECKING:
from twisted.internet.defer import Deferred
from scrapy import Spider
from scrapy.settings import Settings
class ItemPipelineManager(MiddlewareManager):
component_name = "item pipeline"
@classmethod
def _get_mwlist_from_settings(cls, settings: Settings) -> list[Any]:
return build_component_list(settings.getwithbase("ITEM_PIPELINES"))
def _add_middleware(self, pipe: Any) -> None:
super()._add_middleware(pipe)
if hasattr(pipe, "process_item"):
self.methods["process_item"].append(
deferred_f_from_coro_f(pipe.process_item)
)
def process_item(self, item: Any, spider: Spider) -> Deferred[Any]:
return self._process_chain("process_item", item, spider)
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