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page_iterator.py
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page_iterator.py
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from asana.rest import ApiException
class PageIterator(object):
def __init__(self, api_client, api_request_data, **kwargs):
self.__api_client = api_client
self.api_request_data = api_request_data
self.next_page = False
self.item_limit = float('inf') if kwargs.get('item_limit', None) == None else kwargs.get('item_limit')
self.count = 0
def __iter__(self):
"""Iterator interface, self is an iterator"""
return self
def __next__(self):
limit = self.api_request_data["query_params"].get("limit", None)
if limit:
self.api_request_data["query_params"]["limit"] = min(limit, self.item_limit - self.count)
if self.next_page is None or self.api_request_data["query_params"].get("limit", None) == 0:
raise StopIteration
try:
result = self.call_api()
except ApiException as e:
raise e
# If the response has a next_page add the offset to the api_request_data for the next request
self.next_page = result.get('next_page', None)
if (self.next_page):
self.api_request_data["query_params"]["offset"] = self.next_page["offset"]
data = result['data']
if data != None:
self.count += len(data)
return data
def next(self):
"""Alias for __next__"""
return self.__next__()
def items(self):
"""Returns an iterator for each item in each page"""
for page in self:
for item in page:
yield item
def call_api(self):
return self.__api_client.call_api(
self.api_request_data["resource_path"],
self.api_request_data["method"],
self.api_request_data["path_params"],
self.api_request_data["query_params"],
self.api_request_data["header_params"],
self.api_request_data["body"],
self.api_request_data["post_params"],
self.api_request_data["files"],
self.api_request_data["response_type"],
self.api_request_data["auth_settings"],
self.api_request_data["async_req"],
self.api_request_data["_return_http_data_only"],
self.api_request_data["collection_formats"],
self.api_request_data["_preload_content"],
self.api_request_data["_request_timeout"]
)