def apply_cdn_to_url(self, image_url):
"""
Applies a new CDN/base URL to the given URLs if CDN configuration is
enabled.
If CDN does not exist or is disabled, just returns the original. The
URL that we store in CourseOverviewImageSet is already top level path,
so we don't need to go through the /static remapping magic that happens
with other course assets. We just need to add the CDN server if appropriate.
"""
cdn_config = AssetBaseUrlConfig.current()
if not cdn_config.enabled:
return image_url
return self._apply_cdn_to_url(image_url, cdn_config.base_url)
def apply_cdn_to_urls(self, image_urls):
"""
Given a dict of resolutions -> urls, return a copy with CDN applied.
If CDN does not exist or is disabled, just returns the original. The
URLs that we store in CourseOverviewImageSet are all already top level
paths, so we don't need to go through the /static remapping magic that
happens with other course assets. We just need to add the CDN server if
appropriate.
"""
cdn_config = AssetBaseUrlConfig.current()
if not cdn_config.enabled:
return image_urls
base_url = cdn_config.base_url
return {
resolution: self._apply_cdn_to_url(url, base_url)
for resolution, url in image_urls.items()
}