[scim] Charter discussion item: What are the use cases for having a SCIM cursors

Phil Hunt <phil.hunt@independentid.com> Wed, 07 July 2021 16:17 UTC

Return-Path: <phil.hunt@independentid.com>
X-Original-To: scim@ietfa.amsl.com
Delivered-To: scim@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0191D3A1D66 for <scim@ietfa.amsl.com>; Wed, 7 Jul 2021 09:17:02 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.895
X-Spam-Level:
X-Spam-Status: No, score=-1.895 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=independentid-com.20150623.gappssmtp.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xXGeP-Mj8BJm for <scim@ietfa.amsl.com>; Wed, 7 Jul 2021 09:16:57 -0700 (PDT)
Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 97A073A1D6A for <scim@ietf.org>; Wed, 7 Jul 2021 09:16:56 -0700 (PDT)
Received: by mail-pg1-x52c.google.com with SMTP id v7so2785530pgl.2 for <scim@ietf.org>; Wed, 07 Jul 2021 09:16:56 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=independentid-com.20150623.gappssmtp.com; s=20150623; h=from:mime-version:subject:message-id:date:to; bh=Gvj2nZ3mReFqR5pGIMKLaXzXvQPOfXJo6uT2kHQjwfM=; b=xygYRY06sLEJCk1fdMeVIOL/Pa+TQixDJUDBaAbyvpFvqxTvAdEnXeS7A3txeHqT1V MgLiLujg4dr3haN+cdLAxdNAFCWQKbUJiltTYa7fluSAriLmOPFDi6fuXCymwx3Hmd16 DGezEB7RP1Auc+peonLdyhAdQta5gKKFtk+BN18WWeuMNBpzoI1LoB78kvwBDF6K1HHJ Otq+5YyM+Da8WMdpYqbV443BVBl403WU4YeQ2Vr+qhbeGNF7gHTiR/VsSlC/A0m65b0j FhJ9gxFcR14qZ5Vr6sryzFben1SCGj5oqWAdqD3deC/9AOdKM5AKVacxMeT29NDwP3lZ 2N/w==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:mime-version:subject:message-id:date:to; bh=Gvj2nZ3mReFqR5pGIMKLaXzXvQPOfXJo6uT2kHQjwfM=; b=X3X4j8oaviEFHZ/i2yk+he4KAf+VOzugLpWEKEWWsMIXi6cCmUTfeq/vAY+034nrq2 y+0mbWgJZJKRVxbMYp0c/s9FBDr76D931IAVMQ5kpknMBZ4odqsM5Qzhy/TdR1ORNMrK /GMnkzYPIUzwkhyG/ReSYjG7o2M19XXuqS1P79HWgou9Q+sjwgOWCCADbczhjx7WVKSD 2m6Xr6Qu8cA3wXJ52MHxv9hUciqIXQ/oLZQaPoWloaMXPs0QOPGLA/Qx9Xnoed07esk5 hHZYYqkjhLi5ZNZo4mAmZ2Ok0v0i860I6gavxGJPS5Jn+lsaeq5LCZDkJzcuE8pWCxKS J3ww==
X-Gm-Message-State: AOAM53173ssKhuePmRoK1oADyBnVcRoVyzQ/5qFzu9werXs9rKUMgiE9 CqffyguTCTPaPo3gw2Ec9SgOJJDKkGS39WT4
X-Google-Smtp-Source: ABdhPJyQGwgk8HISS2eeyEdgTTuBT4yDEWlePmq4Loxjswz0lcXEdBnabxf5V3uxsmg/NkEAuBBTwA==
X-Received: by 2002:a05:6a00:24c3:b029:318:8c51:7d67 with SMTP id d3-20020a056a0024c3b02903188c517d67mr25636932pfv.23.1625674613976; Wed, 07 Jul 2021 09:16:53 -0700 (PDT)
Received: from smtpclient.apple (node-1w7jr9qqo6k56s4jg3mm8e1y1.ipv6.telus.net. [2001:569:79bc:100:618a:7524:9623:4159]) by smtp.gmail.com with ESMTPSA id j3sm21097115pfe.98.2021.07.07.09.16.53 for <scim@ietf.org> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 07 Jul 2021 09:16:53 -0700 (PDT)
From: Phil Hunt <phil.hunt@independentid.com>
Content-Type: multipart/alternative; boundary="Apple-Mail=_82E2FB8C-0204-4C58-A024-5D92C0D8CD21"
Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.100.0.2.22\))
Message-Id: <AD34DA0D-63FF-4ADF-8F2A-7F43AE75416E@independentid.com>
Date: Wed, 7 Jul 2021 09:16:52 -0700
To: SCIM WG <scim@ietf.org>
X-Mailer: Apple Mail (2.3654.100.0.2.22)
Archived-At: <https://mailarchive.ietf.org/arch/msg/scim/HizuY_8RFxP4rOT7g7GldJa61p4>
Subject: [scim] Charter discussion item: What are the use cases for having a SCIM cursors
X-BeenThere: scim@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Simple Cloud Identity Management BOF <scim.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/scim>, <mailto:scim-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/scim/>
List-Post: <mailto:scim@ietf.org>
List-Help: <mailto:scim-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/scim>, <mailto:scim-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 07 Jul 2021 16:17:02 -0000

As promised on the call today, this is to follow up and ask for use cases for people who want to use cursors. I think this would be helpful to understand in order to drive to a common purpose and solution.

For example, today I think I heard:
*  Some clients want to confirm resources have been deleted.   Why does this come about? SCIM already returns a definitive success/fail upong HTTP DELETE. Is it a case of co-ordination between multiple clients? 

* Is it used to re-concile (e.g. meta-directory style)  between disparately managed systems periodically? 

* Others reasons?

Can the use of cursors be confined to “specialized” clients where cursor might be consider a special “priviledge”.  IOW….would you allow javascript UI components to use cursors against your SCIM server?

Phil Hunt
@independentid
phil.hunt@independentid.com