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Add how-to guide for dynamic client registration with custom metadata
Fixes spring-projectsgh-1044
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134
docs/src/main/java/sample/registration/custommetadata/ClientRegistrar.java
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| /* | ||
| * Copyright 2020-2023 the original author or authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package sample.registration.custommetadata; | ||
|
|
||
| import com.fasterxml.jackson.annotation.JsonProperty; | ||
| import org.springframework.http.HttpHeaders; | ||
| import org.springframework.http.MediaType; | ||
| import org.springframework.security.oauth2.core.AuthorizationGrantType; | ||
| import org.springframework.web.reactive.function.client.WebClient; | ||
| import reactor.core.publisher.Mono; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Objects; | ||
|
|
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| public class ClientRegistrar { | ||
| // @fold:on | ||
| private final WebClient webClient; | ||
|
|
||
| public ClientRegistrar(WebClient webClient) { | ||
| this.webClient = webClient; | ||
| } | ||
| // @fold:off | ||
|
|
||
| public record ClientRegistrationRequest( // <1> | ||
| @JsonProperty("client_name") String clientName, | ||
| @JsonProperty("grant_types") List<String> grantTypes, | ||
| @JsonProperty("redirect_uris") List<String> redirectUris, | ||
| @JsonProperty("logo_uri") String logoUri, | ||
| List<String> contacts, | ||
| String scope) { | ||
| } | ||
|
|
||
| public record ClientRegistrationResponse( // <2> | ||
| @JsonProperty("registration_access_token") String registrationAccessToken, | ||
| @JsonProperty("registration_client_uri") String registrationClientUri, | ||
| @JsonProperty("client_name") String clientName, | ||
| @JsonProperty("client_id") String clientId, | ||
| @JsonProperty("client_secret") String clientSecret, | ||
| @JsonProperty("grant_types") List<String> grantTypes, | ||
| @JsonProperty("redirect_uris") List<String> redirectUris, | ||
| @JsonProperty("logo_uri") String logoUri, | ||
| List<String> contacts, | ||
| String scope) { | ||
| } | ||
|
|
||
| // @fold:on | ||
| public void register(String initialAccessToken) { // <3> | ||
| ClientRegistrationRequest clientRegistrationRequest = new ClientRegistrationRequest( // <4> | ||
| "client-1", | ||
| List.of(AuthorizationGrantType.AUTHORIZATION_CODE.getValue()), | ||
| List.of("https://client.example.org/callback", "https://client.example.org/callback2"), | ||
| "https://client.example.org/logo", | ||
| List.of("contact-1", "contact-2"), | ||
| "openid email profile" | ||
| ); | ||
|
|
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| ClientRegistrationResponse clientRegistrationResponse = | ||
| registerClient(initialAccessToken, clientRegistrationRequest); // <5> | ||
|
|
||
| assert (clientRegistrationResponse.logoUri().contentEquals("https://client.example.org/logo")); // <6> | ||
| assert (clientRegistrationResponse.contacts().size() == 2); | ||
| assert (clientRegistrationResponse.contacts().contains("contact-1")); | ||
| assert (clientRegistrationResponse.contacts().contains("contact-2")); | ||
| // @fold:on | ||
| assert (clientRegistrationResponse.clientName().contentEquals("client-1")); | ||
| assert (!Objects.isNull(clientRegistrationResponse.clientSecret())); | ||
| assert (clientRegistrationResponse.scope().contentEquals("openid profile email")); | ||
| assert (clientRegistrationResponse.grantTypes().contains(AuthorizationGrantType.AUTHORIZATION_CODE.getValue())); | ||
| assert (clientRegistrationResponse.redirectUris().contains("https://client.example.org/callback")); | ||
| assert (clientRegistrationResponse.redirectUris().contains("https://client.example.org/callback2")); | ||
| assert (!clientRegistrationResponse.registrationAccessToken().isEmpty()); | ||
| assert (!clientRegistrationResponse.registrationClientUri().isEmpty()); | ||
| // @fold:off | ||
|
|
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| String registrationAccessToken = clientRegistrationResponse.registrationAccessToken(); // <7> | ||
| String registrationClientUri = clientRegistrationResponse.registrationClientUri(); | ||
|
|
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| ClientRegistrationResponse retrievedClient = retrieveClient(registrationAccessToken, registrationClientUri); // <8> | ||
|
|
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| assert (clientRegistrationResponse.logoUri().contentEquals("https://client.example.org/logo")); // <9> | ||
| assert (clientRegistrationResponse.contacts().size() == 2); | ||
| assert (clientRegistrationResponse.contacts().contains("contact-1")); | ||
| assert (clientRegistrationResponse.contacts().contains("contact-2")); | ||
| // @fold:on | ||
| assert (retrievedClient.clientName().contentEquals("client-1")); | ||
| assert (!Objects.isNull(retrievedClient.clientId())); | ||
| assert (!Objects.isNull(retrievedClient.clientSecret())); | ||
| assert (retrievedClient.scope().contentEquals("openid profile email")); | ||
| assert (retrievedClient.grantTypes().contains(AuthorizationGrantType.AUTHORIZATION_CODE.getValue())); | ||
| assert (retrievedClient.redirectUris().contains("https://client.example.org/callback")); | ||
| assert (retrievedClient.redirectUris().contains("https://client.example.org/callback2")); | ||
| assert (Objects.isNull(retrievedClient.registrationAccessToken())); | ||
| assert (!retrievedClient.registrationClientUri().isEmpty()); | ||
| // @fold:off | ||
| } | ||
|
|
||
| // @fold:on | ||
| public ClientRegistrationResponse registerClient(String initialAccessToken, ClientRegistrationRequest request) { | ||
| return this.webClient | ||
| .post() | ||
| .uri("/connect/register") | ||
| .contentType(MediaType.APPLICATION_JSON) | ||
| .accept(MediaType.APPLICATION_JSON) | ||
| .header(HttpHeaders.AUTHORIZATION, "Bearer %s".formatted(initialAccessToken)) | ||
| .body(Mono.just(request), ClientRegistrationRequest.class) | ||
| .retrieve() | ||
| .bodyToMono(ClientRegistrationResponse.class) | ||
| .block(); | ||
| } | ||
|
|
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| public ClientRegistrationResponse retrieveClient(String registrationAccessToken, String registrationClientUri) { | ||
| return this.webClient | ||
| .get() | ||
| .uri(registrationClientUri) | ||
| .header(HttpHeaders.AUTHORIZATION, "Bearer %s".formatted(registrationAccessToken)) | ||
| .retrieve() | ||
| .bodyToMono(ClientRegistrationResponse.class) | ||
| .block(); | ||
| } | ||
| // @fold:off | ||
| } |
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