Service Quota Management in Service Fabrik

As a Service Provider, if one wants to define quotas on services provisioned, It can be possible using Service Fabrik. Here is how quota management works in Service Fabrik.

• It is possible to disable quota check, setting it in the settings file.

  ###################
  # QUOTA MANAGEMENT SETTINGS #
  ###################
  quota:
    enabled: false

• If the quota check is turned on, then Service Fabrik does the quota check in the following way :

  • It integrates with an entitlement service which is supposed to expose additional API that returns the quota assigned to a CF org(GET /orgs/{orgId}/services/{serviceName}/plan/{versionIndependentPlanName}) or a subaccount for a given service and service plan which returns the quantity as integer assigned to the given org/subaccount for the specified service and service plan name (should be version independent). The details of the entitlement service and co-ordinates are to be added in the settings.

    ###################
    # QUOTA MANAGEMENT SETTINGS #
    ###################
    quota:
      enabled: true
      oauthDomain: https://myauth-domain.com
      serviceDomain: https://my-tenant-onboarding.com
      username: quota_user
      password: quota_password
    
    

  Service Farbik Broker calls this API when a new service instance is created.

  • Already used quota is calculated by calling CF and checking the number of service instances existing in the org in case of existing BOSH based deployment model. CF co-ordinates with admin user credential is necessary for the same.

    #############################
    # CLOUD-CONTROLLER SETTINGS #
    #############################
    cf:
      url: https://api.cf.<mydomain>.com
      username: admin
      password: *****************
      identity_provider: uaa
    

    In case of Interoperator based deployment, the used quota is calculated from the APIServer and does not need any external dependency like CF.

  • Remaining quota is calculated based on above two values and based on that provision request is allowed.