正确的方式Mule OAuth2客户端凭据刷新令牌

Question

我正在使用mule来连接/使用某些服务。身份验证是OAuth2客户端凭据。 什么是刷新令牌的最佳方式？ 一种方法可以检查http.status像

refreshTokenWhen="#[message.inboundProperties['http.status'] == 401]" 

，但我不是很满意了，因为它应该会失败一次刷新令牌。 无论如何刷新令牌基于到期时间？ 我的示例代码：

<mule xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking" xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting" xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns:oauth2="http://www.mulesoft.org/schema/mule/oauth2" xmlns:http="http://www.mulesoft.org/schema/mule/http" 
    xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation" 
    xmlns:spring="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd 
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd 
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd 
http://www.mulesoft.org/schema/mule/oauth2 http://www.mulesoft.org/schema/mule/oauth2/current/mule-oauth2.xsd 
http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/current/mule-scripting.xsd 
http://www.mulesoft.org/schema/mule/ee/tracking http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd"> 
<http:request-config name="HTTP_Request_Configuration" protocol="HTTPS" host="${remote.host}" port="${remote.port}" basePath="${remote.path}" doc:name="HTTP Request Configuration"> 
    <oauth2:client-credentials-grant-type clientId="${clientid}" clientSecret="${clientSecret}" tokenManager-ref="Token_Manager_Config"> 
     <oauth2:token-request tokenUrl="${remote.tokenUrl}" refreshTokenWhen="#[message.inboundProperties['http.status'] == 401 ]"> 
      <oauth2:token-response accessToken="#[json:access_token]" expiresIn="#[json:expires_in]"/> 
     </oauth2:token-request> 
    </oauth2:client-credentials-grant-type> 
</http:request-config> 
<oauth2:token-manager-config name="Token_Manager_Config" doc:name="Token Manager Config"/> 

Answer 1

有在骡子chache范围，你可以保持您为gettoken流缓存范围，您可以指定到期时间，到那时它将使用缓存的道理，当以往任何时候都获得过期然后它将调用获取令牌流，它会将新令牌存储在缓存中。

示例代码：
https://docs.mulesoft.com/mule-user-guide/v/3.7/cache-scope

：在下面的链接

<ee:object-store-caching-strategy name="Caching_Strategy" doc:name="Caching Strategy"> 
    <managed-store storeName="myManagedStore" maxEntries="1" entryTTL="${token.expiretime}" expirationInterval="${token.expireinterval}"/> 
</ee:object-store-caching-strategy>  

<ee:cache cachingStrategy-ref="Caching_Strategy" doc:name="Cache"> 
    <flow-ref name="getTokenFlow" doc:name="getTokenFlow"/> 
</ee:cache> 

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