Add groups field for User type in GraphQL API

What does this MR do?

Adds groups to the UserType in GraphQL.

Database plans

Group Memberships max access level

RAW SQL

SELECT
   MAX("members"."access_level") AS maximum_access_level,
   "members"."source_id" AS members_source_id 
FROM
   "members" 
   LEFT OUTER JOIN
      "users" 
      ON "members"."user_id" = "users"."id" 
WHERE
   "members"."type" = 'GroupMember' 
   AND "members"."source_type" = 'Namespace' 
   AND "users"."state" = 'active' 
   AND "members"."requested_at" IS NULL 
   AND "members"."invite_token" IS NULL 
   AND 
   (
      members.access_level > 5
   )
   AND 
   (
      members.access_level > 5
   )
   AND "members"."user_id" = 8110537 
   AND "members"."source_id" IN 
   (
      6543,
      9970,
      9126439,
      12292726,
      12468552,
      12705441,
      12772697,
      12850394,
      12850410
   )
GROUP BY
   "members"."source_id"

• https://console.postgres.ai/shared/18fb7549-5316-4791-b48b-dc0b0ffcf408

All groups where user can create projects

RAW SQL

SELECT
   "namespaces".* 
FROM
   (
(WITH RECURSIVE "base_and_descendants" AS 
      (
(
         SELECT
            "namespaces".* 
         FROM
            "namespaces" 
            INNER JOIN
               "members" 
               ON "namespaces"."id" = "members"."source_id" 
         WHERE
            "members"."type" = 'GroupMember' 
            AND "members"."source_type" = 'Namespace' 
            AND "namespaces"."type" = 'Group' 
            AND "members"."user_id" = 8110537 
            AND "members"."requested_at" IS NULL 
            AND 
            (
               access_level >= 10
            )
            AND "members"."access_level" IN 
            (
               40,
               50
            )
) 
         UNION
(
         SELECT
            "namespaces".* 
         FROM
            "namespaces", "base_and_descendants" 
         WHERE
            "namespaces"."type" = 'Group' 
            AND "namespaces"."parent_id" = "base_and_descendants"."id")
      )
      SELECT
         "namespaces".* 
      FROM
         "base_and_descendants" AS "namespaces") 
      UNION
(
      SELECT
         "namespaces".* 
      FROM
         "namespaces" 
      WHERE
         "namespaces"."type" = 'Group' 
         AND "namespaces"."id" IN 
         (
            WITH RECURSIVE "base_and_descendants" AS 
            (
(
               SELECT
                  "namespaces".* 
               FROM
                  "namespaces" 
                  INNER JOIN
                     "members" 
                     ON "namespaces"."id" = "members"."source_id" 
               WHERE
                  "members"."type" = 'GroupMember' 
                  AND "members"."source_type" = 'Namespace' 
                  AND "namespaces"."type" = 'Group' 
                  AND "members"."user_id" = 8110537 
                  AND "members"."requested_at" IS NULL 
                  AND 
                  (
                     access_level >= 10
                  )
                  AND "members"."access_level" = 30) 
               UNION
(
               SELECT
                  "namespaces".* 
               FROM
                  "namespaces", "base_and_descendants" 
               WHERE
                  "namespaces"."type" = 'Group' 
                  AND "namespaces"."parent_id" = "base_and_descendants"."id")
            )
            SELECT
               "id" 
            FROM
               "base_and_descendants" AS "namespaces"
         )
         AND 
         (
            "namespaces"."project_creation_level" = 2 
            OR "namespaces"."project_creation_level" IS NULL
         )
)
   )
   namespaces 
WHERE
   "namespaces"."type" = 'Group' 
ORDER BY
   "namespaces"."path" ASC,
   "namespaces"."id" ASC

• user.manageable_groups(include_groups_with_developer_maintainer_access: true).order(path: :asc, id: :asc)
• https://console.postgres.ai/shared/b1a8c752-a8f6-499c-8b6d-c01750c48c90
• Note: this is not a new query, just exposing the same method via GraphQL

All groups where a user can create a project and searched by path or name

RAW SQL

SELECT
   "namespaces".* 
FROM
   (
(WITH RECURSIVE "base_and_descendants" AS 
      (
(
         SELECT
            "namespaces".* 
         FROM
            "namespaces" 
            INNER JOIN
               "members" 
               ON "namespaces"."id" = "members"."source_id" 
         WHERE
            "members"."type" = 'GroupMember' 
            AND "members"."source_type" = 'Namespace' 
            AND "namespaces"."type" = 'Group' 
            AND "members"."user_id" = 8110537 
            AND "members"."requested_at" IS NULL 
            AND 
            (
               access_level >= 10
            )
            AND "members"."access_level" IN 
            (
               40,
               50
            )
) 
         UNION
(
         SELECT
            "namespaces".* 
         FROM
            "namespaces", "base_and_descendants" 
         WHERE
            "namespaces"."type" = 'Group' 
            AND "namespaces"."parent_id" = "base_and_descendants"."id")
      )
      SELECT
         "namespaces".* 
      FROM
         "base_and_descendants" AS "namespaces") 
      UNION
(
      SELECT
         "namespaces".* 
      FROM
         "namespaces" 
      WHERE
         "namespaces"."type" = 'Group' 
         AND "namespaces"."id" IN 
         (
            WITH RECURSIVE "base_and_descendants" AS 
            (
(
               SELECT
                  "namespaces".* 
               FROM
                  "namespaces" 
                  INNER JOIN
                     "members" 
                     ON "namespaces"."id" = "members"."source_id" 
               WHERE
                  "members"."type" = 'GroupMember' 
                  AND "members"."source_type" = 'Namespace' 
                  AND "namespaces"."type" = 'Group' 
                  AND "members"."user_id" = 8110537 
                  AND "members"."requested_at" IS NULL 
                  AND 
                  (
                     access_level >= 10
                  )
                  AND "members"."access_level" = 30) 
               UNION
(
               SELECT
                  "namespaces".* 
               FROM
                  "namespaces", "base_and_descendants" 
               WHERE
                  "namespaces"."type" = 'Group' 
                  AND "namespaces"."parent_id" = "base_and_descendants"."id")
            )
            SELECT
               "id" 
            FROM
               "base_and_descendants" AS "namespaces"
         )
         AND 
         (
            "namespaces"."project_creation_level" = 2 
            OR "namespaces"."project_creation_level" IS NULL
         )
)
   )
   namespaces 
WHERE
   "namespaces"."type" = 'Group' 
   AND 
   (
      "namespaces"."path" ILIKE '%gitlab%' 
      OR "namespaces"."name" ILIKE '%gitlab%'
   )
ORDER BY
   "namespaces"."path" ASC,
   "namespaces"."id" ASC LIMIT 100

• https://console.postgres.ai/shared/b013f3e7-cb76-42fc-8c57-e8c91927fb24

Sample GraphQL Queries

Fetch groups where current user can create projects

Sample Query

query groupsForProjectCreation{
  currentUser {
    groups(search: "git", permission: CREATE_PROJECT) {
      nodes {
        path
        name
        id
      }
    }
  }
}

Sample Response

{
  "data": {
    "currentUser": {
      "groups": {
        "nodes": [
          {
            "path": "gitlab-instance-ff9ae9cb",
            "name": "GitLab Instance",
            "id": "gid://gitlab/Group/52"
          },
          {
            "path": "gitlab-org",
            "name": "Gitlab Org",
            "id": "gid://gitlab/Group/22"
          }
        ]
      }
    }
  }
}

Does this MR meet the acceptance criteria?

Conformity

• I have included changelog trailers, or none are needed. (Does this MR need a changelog?)
• I have added/updated documentation, or it's not needed. (Is documentation required?)
• I have properly separated EE content from FOSS, or this MR is FOSS only. (Where should EE code go?)
• I have added information for database reviewers in the MR description, or it's not needed. (Does this MR have database related changes?)
• I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.
• This change is backwards compatible across updates, or this does not apply.

Availability and Testing

• I have added/updated tests following the Testing Guide, or it's not needed. (Consider all test levels. See the Test Planning Process.)
• I have tested this MR in all supported browsers, or it's not needed.
• I have informed the Infrastructure department of a default or new setting change per definition of done, or it's not needed.

Security

Does this MR contain changes to processing or storing of credentials or tokens, authorization and authentication methods or other items described in the security review guidelines? If not, then delete this Security section.

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Related to #26732 (closed)