spring-boot - Java客户端刷新keycloak token

Question

想象，

以下是 keyclock 中的 2 个客户端(2 个微服务)。

rest-service-1

rest-service-2

以下是rest-service-2中的角色

service-2-user

做service to service call，即:rest-service-1调用rest-service-2

'rest-service-1' 在 Keycloak 中配置了以下值

Access Type: confidential
Service Account Enabled: Yes

此外，在 rest-service-1 的“服务帐户角色”下，添加/映射了以下角色

Role for client rest-service-2: service-2-user

在keyclock中设置2个客户端和服务帐户以调用客户端后。我创建了一个 Spring boot 2.0.3 项目并使用以下代码获取 token 。

@Bean
public AuthzClient authzClient(KeycloakSpringBootProperties kcProperties) {
  //org.keycloak.authorization.client.Configuration
  Configuration configuration =
      new Configuration(kcProperties.getAuthServerUrl(), 
                        kcProperties.getRealm(), 
                        kcProperties.getResource(),
                        kcProperties.getCredentials(), null);

  return AuthzClient.create(configuration);
}

这是我获取访问 token 的方法

@Autowired
private AuthzClient authzClient;

public AccessTokenResponse token() {
  return authzClient.obtainAccessToken();
}

以下是收到的 token :

{
  "access_token": ${access-token},
  "expires_in": 300,
  "refresh_expires_in": 1800,
  "refresh_token": ${refresh-token},
  "token_type": "bearer",
  "id_token": null,
  "not-before-policy": 0,
  "session_state": "6f284b2f-5bb6-4018-8acd-b83923ebb7d7",
  "scope": "profile email"
}

注意:我替换了 token 以使其简短/简短。

问题:

How do use the refresh token stated above and get a new Access Token. Does AuthzClient support that? If so, how do I do that?

Do I need to create a new Instance of TokenCallable and get the token? If so how to instanciate TokenCallable?

Is TokenCallable thread safe?

Answer 1

您不能通过 AuthzClient 明确地做到这一点。类(class)。但是，您可以使用来自 org.keycloak.authorization.client.util 的一些低级 API。包，即 Http类(class)。例如:

public AccessTokenResponse refreshToken(String refreshToken) {
    String url = kcProperties.getAuthServerUrl() + "/realms/" + kcProperties.getRealm() + "/protocol/openid-connect/token";
    String clientId = kcProperties.getResource();
    String secret = (String) kcProperties.getCredentials().get("secret");
    Http http = new Http(kcConfig, (params, headers) -> {});

    return http.<AccessTokenResponse>post(url)
            .authentication()
                .client()
            .form()
                .param("grant_type", "refresh_token")
                .param("refresh_token", refreshToken)
                .param("client_id", clientId)
                .param("client_secret", secret)
            .response()
                .json(AccessTokenResponse.class)
            .execute();
}

@Bean
public org.keycloak.authorization.client.Configuration kcConfig() {
    return new org.keycloak.authorization.client.Configuration(
            kcProperties.getAuthServerUrl(),
            kcProperties.getRealm(),
            kcProperties.getResource(),
            kcProperties.getCredentials(),
            null
    );
}

此解决方案是完全线程安全的(有关详细信息，请参阅 CloseableHttpClient)。