new design proposal

Signed-off-by: Ido Aharon <[email protected]>

design-proposals/data-import-cron-http-import.md

@@ -6,24 +6,23 @@ The design will also demonstrate to the user how to operate with such import typ
 ## Motivation
 Currently, the DataImportCron allows the import of Registry Imports only. Recently, there was a demand to also allow HTTP import types.  
 The problem that arises from HTTP imports is that there is no convention between the different sources, so it's hard to know when the image is updated for each source in a generic way, which will make the polling process more difficult than standard registry sources.  
-One possible solution If the URL is static is to use a Get request with an If-Modified-Since header where we specify the date from which we want to check if there was a change. If there was a change since the specified date, the request will return with a status of 200OK, and then we know that the image has been updated since that date.  
-
-In the current situation we can enable HTTP imports by updating the DesiredDigest label.  
+The current approach is to support only sources that support the If-Modified-Since header.
+If there was a change since the specified date, the request will return with a status of 200OK, and then we know that the image has been updated since that date.
 
 ## Goals
 
-* Allow the user to perform http imports manually with dataimportcron
-* Create a poller that will cover as many cases as possible for automatic updating
+* Allow the user to perform http imports manually with dataimportcron.
+* Create a poller that will cover automatic updating with the help of If-Modified-Since header.
 
 ## Non Goals
 
-* The poller will probably not cover all import cases and sometimes the user will have to manually update the digest
+* The poller will probably not cover all import cases and sometimes the user will have to do manual update.
 
 ## User Stories
 
-* As a user, I would like to import images from an HTTP source using DataImportCron
-* As a user, I would like the poller automatically update the image when it is needed
-* As a user, I would like to manually trigger an HTTP import with DataImportCron
+* As a user, I would like to import images from an HTTP source using DataImportCron.
+* As a user, I would like the poller automatically update the image when the source is updated.
+* As a user, I would like to manually trigger an HTTP import with DataImportCron.
 
 ## Repos
 
@@ -41,7 +40,6 @@ In the current situation we can enable HTTP imports by updating the DesiredDiges
 
 # Design
 
-If the URL is static:
 * Make a GET request with the If-Modified-Since Header starting from the date stored in the AnnLastCronTime annotation
 * If the returned status is 200OK, perform import again
 * Update AnnLastCronTime to time.Now()