mirror of
https://github.com/firestar5683/StarPilot.git
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firestar5683
67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
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class _Page:
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def __init__(self, values, has_next, next_after):
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self.has_next = has_next
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self.values = values
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self.next_after = next_after
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@staticmethod
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def empty():
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return _Page([], False, None)
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@staticmethod
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def initial(after):
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return _Page([], True, after)
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class _PageIterator:
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def __init__(self, page: _Page, get_next_page):
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self.page = page
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self.get_next_page = get_next_page
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def __iter__(self):
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return self
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def __next__(self):
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if not self.page.values:
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if self.page.has_next:
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self.page = self.get_next_page(self.page)
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if not self.page.values:
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raise StopIteration
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return self.page.values.pop(0)
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class _Paginated:
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def __init__(self, paginated_getter, pluck_page_resources_from_response):
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self.paginated_getter = paginated_getter
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self.pluck_page_resources_from_response = pluck_page_resources_from_response
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def find_iter(self, **kwargs):
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"""Iterate over resources with pagination.
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:key str org: The organization name.
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:key str org_id: The organization ID.
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:key str after: The last resource ID from which to seek from (but not including).
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:key int limit: the maximum number of items per page
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:return: resources iterator
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"""
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def get_next_page(page: _Page):
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return self._find_next_page(page, **kwargs)
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return iter(_PageIterator(_Page.initial(kwargs.get('after')), get_next_page))
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def _find_next_page(self, page: _Page, **kwargs):
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if not page.has_next:
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return _Page.empty()
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kw_args = {**kwargs, 'after': page.next_after} if page.next_after is not None else kwargs
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response = self.paginated_getter(**kw_args)
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resources = self.pluck_page_resources_from_response(response)
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has_next = response.links.next is not None
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last_id = resources[-1].id if resources else None
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return _Page(resources, has_next, last_id)
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