本文整理汇总了Python中whoosh.writing.AsyncWriter.cancel方法的典型用法代码示例。如果您正苦于以下问题：Python AsyncWriter.cancel方法的具体用法？Python AsyncWriter.cancel怎么用？Python AsyncWriter.cancel使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类whoosh.writing.AsyncWriter的用法示例。
在下文中一共展示了AsyncWriter.cancel方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: index_update
# 需要导入模块: from whoosh.writing import AsyncWriter [as 别名]
# 或者: from whoosh.writing.AsyncWriter import cancel [as 别名]
def index_update(index, items):
"""
:param:index: index name
:param:items: list of (operation, full class name, primary key, data) tuples.
"""
index_name = index
index = service.app_state.indexes[index_name]
adapted = service.adapted
session = safe_session()
updated = set()
writer = AsyncWriter(index)
try:
for op, cls_name, pk, data in items:
if pk is None:
continue
# always delete. Whoosh manual says that 'update' is actually delete + add
# operation
object_key = f"{cls_name}:{pk}"
writer.delete_by_term("object_key", object_key)
adapter = adapted.get(cls_name)
if not adapter:
# FIXME: log to sentry?
continue
if object_key in updated:
# don't add twice the same document in same transaction. The writer will
# not delete previous records, ending in duplicate records for same
# document.
continue
if op in ("new", "changed"):
with session.begin(nested=True):
obj = adapter.retrieve(pk, _session=session, **data)
if obj is None:
# deleted after task queued, but before task run
continue
document = service.get_document(obj, adapter)
try:
writer.add_document(**document)
except ValueError:
# logger is here to give us more infos in order to catch a weird bug
# that happens regularly on CI but is not reliably
# reproductible.
logger.error("writer.add_document(%r)", document, exc_info=True)
raise
updated.add(object_key)
except Exception:
writer.cancel()
raise
session.close()
writer.commit()
try:
# async thread: wait for its termination
writer.join()
except RuntimeError:
# happens when actual writer was already available: asyncwriter didn't need
# to start a thread
pass