Get access token using authorization code

Overview

The OAuth 2.0 Access Token using Authorization Code filter is used to get a new access token using the authorization code. This supports the OAuth 2.0 authorization code grant or web server authentication flow, which is used by applications that are hosted on a secure server. A critical aspect of this flow is that the server must be able to protect the issued client application's secret. For more details on this flow, see Authorization code grant (or web server) flow.

OAuth access tokens are used to grant access to specific resources in an HTTP service for a specific period of time (for example, photos on a photo sharing website). This enables users to grant third-party applications access to their resources without sharing all of their data and access permissions. An OAuth access token can be sent to the resource server to access the protected resources of the resource owner (user). This token is a string that denotes a specific scope, lifetime, and other access attributes.

Application validation settings

Configure the following fields on this tab:

Use this store to validate the Authorization Code:
Click the browse button to select the store in which to validate the authorization code (for example, in the default Authz Code Store). To add a store, right-click Authorization Code Stores, and select Add Authorization Code Store. You can store codes in a cache, in a relational database, or in an Apache Cassandra database. For more details, see Manage access tokens and authorization codes.

Find client application information from message:

Select one of the following:

  • In Authorization Header:
  • This is the default setting.
  • In Form Body:
  • The Client Id defaults to client_id, and Client Secret defaults to client_secret.

Access token settings

Configure the following fields on the this tab:

Access Token will be stored here:

Click the browse button to select where to store the access token (for example, in the default OAuth Access Token Store). To add an access token store, right-click Access Token Stores, and select Add Access Token Store. You can store tokens in a cache, in a relational database, or in an Apache Cassandra database. For more details, see Manage access tokens and authorization codes.

Access Token Expiry (in secs):

Enter the number of seconds before the access token expires. Defaults to 3600 (one hour).

Access Token Length:

Enter the number of characters in the access token. Defaults to 54.

Access Token Type:

Enter the access token type. This provides the client with information required to use the access token to make a protected resource request. The client cannot use an access token if it does not understand the token type. Defaults to Bearer.

Refresh Token Details:

Select one of the following options:

  • Generate a new refresh token:
  • Select this option to generate a new access token and refresh token pair. The old refresh token passed in the request is removed. This option is selected by default.
  • Enter the number of seconds before the refresh token expires in the Refresh Token Expiry (in secs) field, and enter the number of characters in the refresh token in the Refresh Token Length field. The expiry defaults to 43200 (12 hours), and the length defaults to 46.
  • Do not generate a refresh token:
  • Select this option to generate a new access token only. The old refresh token passed in the request is removed.

Store additional meta data with the access token which can subsequently be retrieved:

Click Add to store additional access token parameters, and enter the Name and Value in the dialog (for example, Department and Engineering).

Monitoring settings

The real-time monitoring options enable you to view service usage in API Gateway Manager. For more information on real-time monitoring, see the API Gateway Administrator Guide.

Enable monitoring

Select this option to enable real-time monitoring. If this is enabled you can view service usage in the web-based API Gateway Manager tool.

Which attribute is used to identify the client

Enter the message attribute to use to identify authenticated clients. The default is authentication.subject.id, which stores the identifier of the authenticated user (for example, the user name or user's X.509 Distinguished Name).

Composite Context

This setting enables you to select a service context as a composite context in which multiple service contexts are monitored during the processing of a message. This setting is not selected by default.

For example, the API Gateway receives a message and sends it to serviceA first, and then to serviceB. Monitoring is performed separately for each service by default. However, you can set a composite service context before serviceA and serviceB that includes both services. This composite service passes if both services complete successfully, and monitoring is also performed on the composite service context.

Related Links