(Optional) Authorizing Applications to Call an API

Overview

Applications need to be authorized to call APIs that use App authentication. When calling an API, a user gets authenticated using the key and secret of an integration application.

If Simple Authentication is enabled for an API, the AppCode configured in the integration application can be used for simple security authentication, and the key and secret do not need to be used for signature authentication.

The integration application to which the API belongs can be directly used to call the API without authorization.

Prerequisites

• The security authentication mode of the API is set to App.
• The API has been published in an environment. Otherwise, publish the API first.

Granting Permissions for Integration Applications

1. Log in to the ROMA Connect console. On the Instances page, click View Console next to a specific instance.
2. In the navigation pane on the left, choose API Connect > API Management. On the APIs tab page, select Authorize of an API.
3. On the Authorize App page, click Select App.
4. In the Select App dialog box, configure authorization information and click OK.
   After the authorization is complete, click on the left of the API to view the list of authorized integration applications.

   Table 1 Authorization configuration

   Parameter	Description
   Environment	Select the environment in which the API has been published.
   Integration Applications	Select the integration applications to be authorized for API calling.
   Access Parameters	Set access parameters for the selected integration applications to be authorized. The access parameters will be added to the backend signature authentication information and sent to a backend service. The backend service then returns different response parameters based on the carried access parameters.
   Green Channel	Determine whether to enable the green channel. After the green channel is enabled, you also need to set Whitelist and Blacklist.
   Whitelist	Mandatory only when Green Channel is enabled. Enter the IP addresses or IP address segments to be added to the whitelist. The IP addresses in the whitelist can call APIs without authentication.
   Blacklist	Available only when Green Channel is enabled. Enter the IP addresses or IP address segments to be added to the blacklist. The IP addresses in the blacklist are not allowed to call APIs.

Adding AppCode

1. Log in to the ROMA Connect console. On the Instances page, click View Console next to a specific instance.
2. In the navigation pane on the left, choose API Connect > API Calling. On the Clients tab page, click the name of the client (that is, the integration application) authorized by the API.
3. On the AppCode tab page of the client details page, click Add AppCode.
4. In the dialog box displayed, configure AppCode information and click OK.

   Table 2 AppCode configuration

   Parameter	Description
   AppCode Type	Select the method for generating AppCode. Automatically generated: AppCode is randomly generated by the system. Custom: Enter a user-defined AppCode.
   AppCode	Enter the value of AppCode.