def get_or_create(
request_data, cache, load_data, render_page, get_cache_key,
get_etag_key, get_response, debug, request):
""" Returns an archived version of a document.
The response is cached and ETags are handled.
"""
if debug:
# do not cache when in debug mode
_, _, loaded_data = load_data()
return get_response(render_page(*loaded_data))
cache_key = get_cache_key(*request_data)
# try to get a rendered page from the cache
cached_page = cache_get(cache, cache_key)
old_api_cache_key = cached_page.api_cache_key \
if cached_page != NO_VALUE else None
# request the document from the api. if there was an entry in the
# cache, set the `If-None-Match` header with the last ETag. if the
# document version on the api has not changed, `not modified` will
# be returned.
not_modified, api_cache_key, loaded_data = load_data(old_api_cache_key)
ui_etag_key = get_etag_key(api_cache_key)
if not_modified:
# the cached page is still valid
log.debug('Serving from cache {0}'.format(cache_key))
etag_cache(request, ui_etag_key)
return get_response(cached_page.page_html)
else:
# there is a new version from the api, render the page
page_html = render_page(*loaded_data)
cache_set(cache, cache_key, CachedPage(api_cache_key, page_html))
etag_cache(request, ui_etag_key)
return get_response(page_html)
def get_or_create(request_data, cache, load_data, render_page, get_cache_key,
get_etag_key, get_response, debug, request):
""" Returns an archived version of a document.
The response is cached and ETags are handled.
"""
if debug:
# do not cache when in debug mode
_, _, loaded_data = load_data()
return get_response(render_page(*loaded_data))
cache_key = get_cache_key(*request_data)
# try to get a rendered page from the cache
cached_page = cache_get(cache, cache_key)
old_api_cache_key = cached_page.api_cache_key \
if cached_page != NO_VALUE else None
# request the document from the api. if there was an entry in the
# cache, set the `If-None-Match` header with the last ETag. if the
# document version on the api has not changed, `not modified` will
# be returned.
not_modified, api_cache_key, loaded_data = load_data(old_api_cache_key)
ui_etag_key = get_etag_key(api_cache_key)
if not_modified:
# the cached page is still valid
log.debug('Serving from cache {0}'.format(cache_key))
etag_cache(request, ui_etag_key)
return get_response(cached_page.page_html)
else:
# there is a new version from the api, render the page
page_html = render_page(*loaded_data)
cache_set(cache, cache_key, CachedPage(api_cache_key, page_html))
etag_cache(request, ui_etag_key)
return get_response(page_html)
def get_response_html(page_html):
return get_response(self.request, page_html)
def get_response_html(page_html):
return get_response(self.request, page_html)