Keycloak Onboard a User

arazzo: 1.0.1
info:
  title: Keycloak Onboard a User
  summary: Provision a realm user, set an initial password, and grant a realm-level role.
  description: >-
    The canonical Keycloak user provisioning flow. The workflow confirms the
    target realm, pre-checks whether the username is already taken, and then
    branches: an existing user is reused, while a missing user is created. Both
    branches converge on a read-back search, because the Keycloak Admin API
    returns 201 with only a Location header and no response body on create, so
    the user UUID must be resolved by searching the realm before any dependent
    call can be made. The flow then sets a temporary password and grants a
    realm-level role, verifying the mapping at the end. Every step spells out its
    request inline so the flow can be read and executed without opening the
    underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: keycloakAdminApi
  url: ../openapi/keycloak-admin-rest-api-openapi.yml
  type: openapi
workflows:
- workflowId: onboard-user
  summary: Create a user in a realm, set an initial password, and assign a realm role.
  description: >-
    Idempotently provisions a user account: reuses the account when the username
    already exists, otherwise creates it, then resolves the UUID, sets a
    temporary password, and grants the requested realm-level role.
  inputs:
    type: object
    required:
    - realm
    - username
    - email
    - password
    - roleName
    properties:
      realm:
        type: string
        description: The name of the realm to provision the user into (e.g. "customers").
      username:
        type: string
        description: The username for the account. Must be unique within the realm.
      email:
        type: string
        description: The email address for the account.
      firstName:
        type: string
        description: The user's given name.
      lastName:
        type: string
        description: The user's family name.
      password:
        type: string
        description: The initial password to set on the account.
      temporaryPassword:
        type: boolean
        description: >-
          When true the user is forced to change the password at next login.
          Defaults to true for onboarding.
      roleName:
        type: string
        description: The realm-level role to grant (e.g. "offline_access").
  steps:
  - stepId: confirmRealm
    description: >-
      Read the realm representation to confirm the realm exists and is enabled
      before attempting to write any users into it.
    operationId: getRealm
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      realmName: $response.body#/realm
      realmEnabled: $response.body#/enabled
      registrationEmailAsUsername: $response.body#/registrationEmailAsUsername
  - stepId: precheckUser
    description: >-
      Search the realm for an existing account with this username so the flow
      stays idempotent and never trips the 409 conflict on create.
    operationId: getUsers
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    - name: username
      in: query
      value: $inputs.username
    - name: max
      in: query
      value: 1
    - name: briefRepresentation
      in: query
      value: true
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      existingUserId: $response.body#/0/id
    onSuccess:
    - name: userMissing
      type: goto
      stepId: createUserAccount
      criteria:
      - context: $response.body
        condition: $.length == 0
        type: jsonpath
    - name: userExists
      type: goto
      stepId: resolveUserId
      criteria:
      - context: $response.body
        condition: $.length > 0
        type: jsonpath
  - stepId: createUserAccount
    description: >-
      Create the enabled user account. Keycloak answers 201 with a Location
      header and no response body, so the UUID is resolved by the next step
      rather than read from this response.
    operationId: createUser
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    requestBody:
      contentType: application/json
      payload:
        username: $inputs.username
        email: $inputs.email
        firstName: $inputs.firstName
        lastName: $inputs.lastName
        enabled: true
        emailVerified: false
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      createdUserLocation: $response.header.Location
  - stepId: resolveUserId
    description: >-
      Resolve the user UUID by searching the realm for the username. Both the
      created and the pre-existing branch converge here, because every dependent
      Keycloak call is keyed on the UUID rather than the username.
    operationId: getUsers
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    - name: username
      in: query
      value: $inputs.username
    - name: max
      in: query
      value: 1
    successCriteria:
    - condition: $statusCode == 200
    - context: $response.body
      condition: $.length > 0
      type: jsonpath
    outputs:
      userId: $response.body#/0/id
      resolvedUsername: $response.body#/0/username
      userEnabled: $response.body#/0/enabled
  - stepId: setInitialPassword
    description: >-
      Set the account password. Marking the credential temporary forces a
      password change at first login, which is the expected onboarding posture.
    operationId: resetUserPassword
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    - name: userId
      in: path
      value: $steps.resolveUserId.outputs.userId
    requestBody:
      contentType: application/json
      payload:
        type: password
        value: $inputs.password
        temporary: $inputs.temporaryPassword
    successCriteria:
    - condition: $statusCode == 204
  - stepId: resolveRole
    description: >-
      Look up the realm-level role by name to obtain the id and name pair that
      the role-mapping endpoint requires in its request body.
    operationId: getRole
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    - name: roleName
      in: path
      value: $inputs.roleName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      roleId: $response.body#/id
      resolvedRoleName: $response.body#/name
      roleComposite: $response.body#/composite
  - stepId: assignRealmRole
    description: >-
      Grant the resolved realm-level role to the user. The body is an array of
      role representations, each requiring the id and name of the role.
    operationId: addUserRealmRoleMappings
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    - name: userId
      in: path
      value: $steps.resolveUserId.outputs.userId
    requestBody:
      contentType: application/json
      payload:
      - id: $steps.resolveRole.outputs.roleId
        name: $steps.resolveRole.outputs.resolvedRoleName
    successCriteria:
    - condition: $statusCode == 204
  - stepId: verifyRoleMappings
    description: >-
      Read the user's realm-level role mappings back to prove the grant landed
      before the onboarding flow reports success.
    operationId: getUserRealmRoleMappings
    parameters:
    - name: realm
      in: path
      value: $inputs.realm
    - name: userId
      in: path
      value: $steps.resolveUserId.outputs.userId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      realmRoles: $response.body
  outputs:
    userId: $steps.resolveUserId.outputs.userId
    username: $steps.resolveUserId.outputs.resolvedUsername
    grantedRoleId: $steps.resolveRole.outputs.roleId
    realmRoles: $steps.verifyRoleMappings.outputs.realmRoles