[ome-devel] webgateway authentication

Wed Aug 8 22:25:15 BST 2018

Hi Manuel,

 I created a card to add the /api/v0/logout and update documentation.

https://trello.com/c/dzFYdqer/481-json-api-logout

Thanks for the feedback.

 Cheers,

  Will.

On 7 Aug 2018, at 08:51, Manuel Stritt <manuel.stritt at idorsia.com<mailto:manuel.stritt at idorsia.com>> wrote:

Hi Will,

thanks for the clarification.

Maybe we could add a /api/v0/logout/ then in addition, then login and logout exist in both,
webclient and api.

I tried the java example. Unfortunately it crashes with a parser exception here (invalid json),
but for testing I had to replace the httpclient by an implementation which accepts untrusted
ssl certificates, so maybe the error is on my side.
Anyway, in the example the session is never closed.

Cheers,
Manuel

:
Hi Manuel,

 Apologies for the confusion.

All http calls to OMERO.web will close any statefull services they use, so this will limit the
resources that are consumed on the server during your session. However, it is still a good idea to
log out when you are done, since this will free up the server session and prevent large stale session cleanups every 30 minutes.

It is fine to combine /api/ and /webgateay/ or /webclient/ URLs in the same session.
There’s no technical difference between them. It’s just that the /api/ URLs are
designed to be more consistent and are better documented.

 Regards,

   Will.

PS: did you also see the JSONClient.java example linked under https://docs.openmicroscopy.org/omero/5.4.6/developers/json-api.html#getting-started ?
Is that any use to you?

On 7 Aug 2018, at 07:33, Manuel Stritt <manuel.stritt at idorsia.com<mailto:manuel.stritt at idorsia.com>> wrote:

Hi Damir,

thanks a lot for that.

Here you do the logout via the URL /webclient/logout/
And for the login you are using /webclient/login/

According to the documentation
https://docs.openmicroscopy.org/omero/5.4.7/developers/json-api.html#getting-started
I'm using the URL
/api/v0/login/
for login instead.
So should we use the /webclient/ methods or the /api/v0/ methods?

Unfortunately there's no /api/v0/logout/ available, this only works via /webclint/logout/.

Or can these two be combined, e.g. login with /api/v0/login/ and logout via /webclient/logout/ ?

Regards,
Manuel

On Mon, Aug 6, 2018 at 10:06 PM, Damir Sudar <dsudar at lbl.gov<mailto:dsudar at lbl.gov>> wrote:
Hi Manuel,

Roger Noble from Zegami put together a small python program to connect to an OMERO server via the webgateway and retrieve data and visualizations. Originally that was developed for public repositories such as IDR, but I submitted some code to enable it to work with non public servers with full authentication which is now integrated into that package. I used the python requests package to handle opening and closing the session. See:
https://github.com/zegami/omero-idr-fetch

Cheers,
Damir

Sent from my iPad, please excuse poor spelling

On Aug 6, 2018, at 08:20, Manuel Stritt <manuel.stritt at idorsia.com<mailto:manuel.stritt at idorsia.com>> wrote:

Dear all,

one more question regarding the webgateway. Currently I
- get a crsf-token
- login using the crsf-token and get a session-id
- do s.th<http://s.th/>. e.g. query image data

now - should I not close the session or do a logout at the end?

I guess it will timeout after a while.  So is it correct to just create new sessions / login calls - or is there a way to close it?

Regards,
Manuel

Hi Manuel

You'll always need to create a web Django session. Have you seen https://docs.openmicroscopy.org/omero/5.4.7/developers/json-api.html#getting-started ? It includes an example of using Python to log in to web.

Simon

On 3 August 2018 at 15:05, Manuel Stritt <manuel.stritt at idorsia.com<mailto:manuel.stritt at idorsia.com>> wrote:
Dear all,

I'm using the webgateway to programmatically e.g. download images. That works if a user used the web viewer before and logged in there,
but it would be nice to use the webgateway completely programmatically without user interaction.

Is there a way to perform an authentication via rest-API / webgateway directly?

Regards,
Manuel

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