storlets

Pass basic swift headers to Storlets

Bug #1525770 reported by Takashi Kajinami
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
storlets
New
Wishlist
Unassigned

Bug Description

storlet_handler now only passes metadata to Storlet application, but In some cases we want to use basic swift headers.
For example, in image processing application, we want to know Content-Type to decide the way to decode the image data in swift.

Revision history for this message
Takashi Kajinami (kajinamit) wrote :

I'm also wondering if we should be able to overwrite basic headers some cases.

For example, when we overwrite object content with Storlet, the value in ETag header becomes different from the one calculated based on the response content. (This causes error in "swift download" because in swift command it checkes ETag value)
If storlets can overwrite basic headers, then we can replace ETag value by new one, and old ETag value as another header, something like Original-ETag.

Revision history for this message
Hamdi Roumani (roumani) wrote :

I think there are definitely use cases for this scenario ! Modifying the ETAG in particular (which would make this more transparent to other applications that validate the ETAG ... currently any storlet that changes the content-length will indeed cause any etag validation to fail)

btw user headers are covered through:
https://bugs.launchpad.net/storlets/+bug/1497578

Takashi Kajinami (kajinamit)
Changed in storlets:
importance: Undecided → Wishlist
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