User navigates to the Templates page then switches to ISO using the "Select view" selector, then the user clicks on "Register ISO" (existing screen)
Register ISO form pops up (existing screen)
User has now the choice to provide URL of the volume/ISO (existing functionality) or Upload File from Browser (new functionality)
Selects File Upload from Browser then specifies the volume/ISO file (Browse...) to be uploaded
User fills in other existing form fields
User clicks OK to submit the form
Browser UI requests an unique upload URL using the getUploadParamsForVolume api call
Management server returns an upload url, encrypted metadata string which should be passed on to the upload url while doing the upload
Browser starts uploading using POST request to the upload URL
The post request completes once the template is uploaded or there was an error uploading.
The user can close the dialog (POST request should still be active) and use listvolumes API result to check the status of it

Testing

Unit testing

TBD: unit tests for service layer, api layer and monitoring thread (koushik/rajani)

...