93af461e40
Since large Glance images even temporarily stored on dashboard side tend to fill up Web Server filesystem, it is desirable to route image payload directly to Glance service (which usually streams it to storage backend, which in turn has plenty of space). To make it possible we need to trick Django into thinking that a file was selected inside FileInput, while its contents are not actually transferred to Django server. Then, once image is created client-side code needs to know the exact url the image payload needs to be transferred to. Both tasks are solved via using ExternalFileField / ExternalUploadMeta classes which allow to work around the usual Django form processing workflow with minimal changes to CreateImage form business logic. The client-side code relies on CORS being enabled for Glance service (otherwise browser would forbid the PUT request to a location different from the one form content came from). In a Devstack setup you'll need to edit [cors] section of glance-api.conf file, setting `allowed_origin` setting to the full hostname of the web server (say, http://<HOST_IP>/dashboard) and restart glance-api process. A progress bar is implemented to track the progress of a file upload, in case a really huge image is transferred. The new machinery could be easily switched on/off with a single setting `HORIZON_IMAGES_UPLOAD_MODE` set to 'direct' / 'legacy'. Related-Bug: #1467890 Closes-Bug: #1403129 Implements blueprint: horizon-glance-large-image-upload Change-Id: I01d02f75268186b43066df6fd966aa01c08e01d7
17 lines
764 B
YAML
17 lines
764 B
YAML
---
|
|
features:
|
|
- Create from a local file feature is added to both Angular and Django
|
|
Create Image workflows. It works either in a 'legacy' mode
|
|
which proxies an image upload through Django, or in a new
|
|
'direct' mode, which in turn implements
|
|
[`blueprint horizon-glance-large-image-upload
|
|
<https://blueprints.launchpad.net/horizon/+spec/horizon-glance-large-image-upload>`_].
|
|
To use the direct mode HORIZON_IMAGES_UPLOAD_MODE setting
|
|
should be changed to 'direct' value along with changing
|
|
glance-api.conf cors.allowed_origin parameter to the URL
|
|
from which Horizon is served.
|
|
deprecations:
|
|
- HORIZON_IMAGES_ALLOW_UPLOAD setting is deprecated and
|
|
should be gradually replaced with
|
|
HORIZON_IMAGES_UPLOAD_MODE setting.
|