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Inject OAuth2AuthorizedClientManager via constructor.

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Olga Maciaszek-Sharma
2022-09-30 14:30:30 +02:00
parent c35fcffa48
commit 09939b6174
6 changed files with 41 additions and 51 deletions
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docs/src/main/asciidoc/spring-cloud-openfeign.adoc
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@@ -810,10 +810,12 @@ OAuth2 support can be enabled by setting following flag:
spring.cloud.openfeign.oauth2.enabled=true
----
When the flag is set to true, and the oauth2 client context resource details are present, a bean of class `OAuth2AccessTokenInterceptor` is created. Before each request, the interceptor resolves the required access token and includes it as a header.
`OAuth2AccessTokenInterceptor` uses the `AuthorizedClientServiceOAuth2AuthorizedClientManager` to get `OAuth2AuthorizedClient` that holds an `OAuth2AccessToken`. If the user has specified an OAuth2 `clientRegistrationId` using the `spring.cloud.openfeign.oauth2.clientRegistrationId` property, it will be used to retrieve the token. If the token is not retrieved or the `clientRegistrationId` has not been specified, the `serviceId` retrieved from the `url` host segment will be used.
`OAuth2AccessTokenInterceptor` uses the `OAuth2AuthorizedClientManager` to get `OAuth2AuthorizedClient` that holds an `OAuth2AccessToken`. If the user has specified an OAuth2 `clientRegistrationId` using the `spring.cloud.openfeign.oauth2.clientRegistrationId` property, it will be used to retrieve the token. If the token is not retrieved or the `clientRegistrationId` has not been specified, the `serviceId` retrieved from the `url` host segment will be used.
TIP:: Using the `serviceId` as OAuth2 client registrationId is convenient for load-balanced Feign clients. For non-load-balanced ones, the property-based `clientRegistrationId` is a suitable approach.
TIP:: If you do not want to use the default setup for the `OAuth2AuthorizedClientManager`, you can just instantiate a bean of this type in your configuration.
=== Transform the load-balanced HTTP request
You can use the selected `ServiceInstance` to transform the load-balanced HTTP Request.