google-api - Mule 3.5 - Google OAuth2 示例

Question

我正在尝试将 Mule 3.5 连接到 Google API(任务、日历等)，但我在 OAuth2 身份验证方面遇到了各种问题。

谁能给我一个 Mule 项目的示例 .xml 文件，其中包含一个有效的 Google OAuth2 示例(可能还有 Google 的 API 控制台中的设置)。

链接也可以。

Answer 1

您需要使用创建项目按钮在您的 Google 开发者帐户 (https://console.developers.google.com/) 中创建一个应用程序。记下您的项目 ID，您将在 Google 连接器配置中需要它。

然后您需要点击该应用程序并转到APIs & Auth。确保您需要的 API 设置为“开启”状态。在这种情况下，您可能希望打开日历并关闭其他不需要的功能。请注意，对日历服务的大量调用可能会产生费用或配额限制。

同样在 Google 开发者控制台左侧的 APIs & Auth 部分下，您需要选择credentials。然后点击红色按钮创建新的客户端ID。这将为您提供两条关键信息:

1. 客户端 ID - 这会进入 Mule 中 Google 连接器中的“consumerKey”
2. Client Secret - 这会进入 Mule 中的“consumerSecret”连接器

另一个需要设置的重要事项是重定向 URI。这需要是这样的:

http://localhost:8081/oauth2callback

这需要与您放入连接器配置中的内容相匹配。如果您在防火墙后运行您的 Mule 服务器，您将需要配置诸如代理之类的东西，以便此回调可以到达您的服务器。

这是我设法开始工作的粗略示例。请务必根据需要替换 clientID clientSecret 和应用程序名称。

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:json="http://www.mulesoft.org/schema/mule/json"
  xmlns:https="http://www.mulesoft.org/schema/mule/https"
      xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking"
  xmlns:objectstore="http://www.mulesoft.org/schema/mule/objectstore"
  xmlns:http="http://www.mulesoft.org/schema/mule/http"
  xmlns:google-calendars="http://www.mulesoft.org/schema/mule/google-calendars"
  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" version="EE-3.4.1"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="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/http 
          http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
          http://www.mulesoft.org/schema/mule/google-calendars 
          http://www.mulesoft.org/schema/mule/google-calendars/1.0/mule-google-calendars.xsd
          http://www.mulesoft.org/schema/mule/objectstore 
          http://www.mulesoft.org/schema/mule/objectstore/1.0/mule-objectstore.xsd
          http://www.mulesoft.org/schema/mule/ee/tracking 
          http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd
          http://www.mulesoft.org/schema/mule/https 
          http://www.mulesoft.org/schema/mule/https/current/mule-https.xsd
          http://www.mulesoft.org/schema/mule/json 
          http://www.mulesoft.org/schema/mule/json/current/mule-json.xsd">

<!-- The 'consumerKey' is Client ID of you google application
     The 'consumerSecret' is the Client Secret of the google application
     The 'applicationName' is the application name you supplied (or Google created for you) when you created your application
     on the google developer console
    -->
<google-calendars:config-with-oauth
    name="Google_Calendars"
    consumerKey="replace-with-client-ID"
    consumerSecret="replace-with-client-secret" doc:name="Google Calendars"
    applicationName="replace-with-application-name">

    <!-- The values here need to match the redirect URL you authorized for your Google Application
         In this case the callback URL would be http://localhost:8081/ouath2callback
     -->
    <google-calendars:oauth-callback-config
        domain="localhost" localPort="8081" path="oauth2callback" remotePort="8081" />
        </google-calendars:config-with-oauth>


<!-- This is the objectstore that stores your Auth key which is used in the second flow -->
<objectstore:config name="ObjectStore" doc:name="ObjectStore" />

<!-- The first flow is executed when you go to http://localhost:8080/oauth-authorize
     It initiates the Google authentication and if successful gets the auth key and puts it into the object store -->
<flow name="authorizationAndAuthenticationFlow" doc:name="authorizationAndAuthenticationFlow">
    <http:inbound-endpoint exchange-pattern="request-response"
        host="localhost" port="8080" path="oauth-authorize" doc:name="HTTP" />
    <google-calendars:authorize config-ref="Google_Calendars"
        doc:name="Google Calendars" />
    <!-- Your Auth token is store in the key 'accessTokenId' -->    
    <objectstore:store config-ref="ObjectStore" key="accessTokenId"
        value-ref="#[flowVars['OAuthAccessTokenId']]" overwrite="true"
        doc:name="ObjectStore" />
</flow>

<!-- This flow can be called after the authentication is complete. It uses the previously stored token and to retreive your
     Calendars and return them as JSON -->
<flow name="getInformationFromCalendar" doc:name="getInformationFromCalendar">
    <http:inbound-endpoint exchange-pattern="request-response"
        host="localhost" port="8081" doc:name="HTTP" />

    <!-- The enricher adds the access token to your message -->
    <enricher target="#[flowVars['accessTokenId']]" doc:name="Message Enricher">
        <objectstore:retrieve config-ref="ObjectStore"
            key="accessTokenId" defaultValue-ref="#['']" doc:name="Get AccessToken" />
    </enricher>
    <expression-filter expression="#[flowVars['accessTokenId'] != '']"
        doc:name="Is Access Token Set" />

    <!-- gets your first 200 calendars using the accessToken that you enriched the message with-->
    <google-calendars:get-calendar-list
        config-ref="Google_Calendars" maxResults="200"
        pageToken="#[flowVars['GoogleCalendar_NEXT_PAGE_TOKEN']]" doc:name="Google Calendars"
        accessTokenId="#[flowVars['accessTokenId']]" />
    <json:object-to-json-transformer
        doc:name="Object to JSON" />
</flow>

</mule>