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#!/usr/bin/env python
# -*- encoding: utf-8 -*-
#
# author: David Medina
class Paginate:
""" Paginate resources """
def __init__(self, resource, requester):
self.resource = resource
self.requester = requester
self.page = 1
def _last_page(self, link):
if not getattr(self, 'last', False):
from github3.packages.link_header import parse_link_value
from urlparse import urlparse, parse_qs
for link, rels in parse_link_value(link).items():
if rels.get('rel') == 'last':
query = urlparse(link).query
self.last = int(parse_qs(query).get('page').pop())
return self.last
def __iter__(self):
return self
def initial(self):
link, content = self.requester(self.resource, paginate=True, page=1)
self.last = self._last_page(link) if link else 1
return content
def next(self):
if self.page == 1:
content = self.initial()
self.page += 1
return content
else:
if self.page > self.last:
raise StopIteration
else:
content = self.requester(self.resource, page=self.page)
self.page += 1
return content
class Handler(object):
""" Handler base. Requests to API and modelize responses """
def __init__(self, gh):
self._gh = gh
super(Handler, self).__init__()
#TODO: if limit is multiple of per_page... it do another request for nothing
def _get_resources(self, resource, model=None, limit=None):
page_resources = Paginate(resource, self._gh.get)
counter = 1
for page in page_resources:
for raw_resource in page:
if limit and counter > limit: break
counter += 1
yield raw_resource
else:
continue
break
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