Will the introduction of the new Access Control Service (and API) require two 
new HTTP API calls for every call from the user to the API?

I’d also like to second two of Hank’s requests below for #3 and #4. 

—Eric

> On Feb 22, 2017, at 9:03 AM, Hank Beatty <hbea...@apache.org> wrote:
> 
> Hi Naama,
> 
> I like the idea of making Access Control hierarchical.
> 
> I came up with some questions I thought we might think about:
> 
> 1. Do the tenants become the equivalent of the "groups" we are using today?
> 
> 2. In your example, can there be children of 'Company C'?
> 
> 3. Some of the APIs currently allow for 'token' authentication but, the UI 
> portion was never implemented (AFAIK). I would like to see the 'token' 
> authentication added so that scripts don't have to be run with user/pass.
> 
> 4. I would like to see more than a single "root" user (perhaps a group that 
> one could assign users).
> 
> Thanks,
> Hank
> 
> On 02/21/2017 03:32 PM, Naama Shoresh wrote:
>> Hi,
>> 
>> We've been considering the subject of authorization within TO, and have
>> phrased a concept we'd like to share and get some feedback about.
>> You can find it in the wiki
>> <https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=68715910>,
>> and also written below, for ease of use.
>> Your comments and insights are most welcome.
>> 
>> =========================================================
>> 
>> The access control model concept is constructed of two dimensions:
>> capabilities & data.
>> 1. CapabilitiesCheck if a user is allowed to perform an operation
>> 
>> APIs are grouped to roles, and each user is assigned a set of roles which
>> implies his allowed APIs.
>> 
>> Example:
>> 
>> API                          | Role
>> -----------------------------+-----------------
>> GET  /ds/:id                 | ds-read
>> POST /ds/create              | ds-write
>> POST /ds/:id/update          | ds-write
>> POST /profile/:id/update     | profile-write
>> 
>> The  access is checked at the entry point. A user Joe which has the roles
>> ds-read & ds-write is allowed to operate the following APIs:  /ds/:id,
>> /ds/create and /ds/:id/update.
>> 2. DataCheck if a user is allowed to access a specific set of data.
>> 
>> Here is where the concept of *tenants* is introduced:
>> 
>> Every "resource" in the  database is assigned  (delivery-services, servers,
>> etc..) to  a tenant. A tenant is an organization in TC. It can be either a
>> content-provider or an ISP. Tenants are hierarchical, where  the parent is
>> conceptually assigned a super-set of all the resources of  its children.
>> 
>> Each user belongs to one or more tenants. Only the tenant's resources are
>> available for the tenant's users.
>> 
>> * Note: for simplicitly, the example below refers to a single tenant per
>> user.
>> 
>> Example:
>> 
>> Tenant table:
>> 
>> ID  | Tenant-name | Parent-ID
>> ----+-------------+-----------
>> 1   | company A   | -
>> 2   | company B   | 1         // a child of company A
>> 3   | company C   | 1         // another child of company A
>> 4   | company D   | -
>> 5   | company E   | -
>> 
>> DS table:
>> 
>> DS-Name        | ... | Tenant
>> ---------------------+--------
>> cp-a-vod       | ... | 1
>> cp-a-linear    | ... | 1
>> cp-b-vod       | ... | 2
>> cp-e-linear    | ... | 4
>> 
>> Users table:
>> 
>> Username   | ... | Tenant
>> -----------+-----+--------
>> Joe        | ... | 1
>> Jack       | ... | 2
>> John       | ... | 4
>> 
>> The user Joe will be allowed to access DSs of company A, company B &
>> company C, namely: cp-1-vod, cp-a-linear & cp-b-vod.
>> The user Jack will be allowed to access DS of company B, namely: cp-b-vod.
>> The user John will be allowed to access DS of company D, namely:
>> cp-e-linear.
>> 
>> Note: There will be a special "root" user that will be allowed to access
>> all resources.
>> Access Control Serice
>> 
>> The  authorization (access-control) functionality is contained within a new
>> service(s). The first APIs this service will expose are something along
>> these lines:
>> 
>> 1. Check if a user is allowed to perform an operation.
>> Input: A user and an API route
>> Output: A boolean answer allowed/rejected
>> 
>> 2. Check if a user is allowed to access a resource of a certain tenant
>> Input: A user and a tenant
>> Output: A boolean answer allowed/rejected
>> 
>> 
>> 
>> This is a simplified description. It doesn't handle the issue of
>> interaction between tenants, such as assigning a delivery-service to a CDN,
>> which will be discussed separately.
>> 
>> This email only aims to present the concepts.
>> 
>> Thanks,
>> Naama
>> 

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