如何解决如何使用OAuth 2刷新令牌为Power BI创建自定义数据源连接器?
我有一个使用M语言的自定义Power Bi连接器。我们有一个处理身份验证的OAuth服务器,但是它确实可以工作,但是,当访问令牌过期并且在Power Bi中单击“刷新”按钮时,我们总是会弹出一个对话框,提示“凭据无效”,并且用户必须登录再次。
这对我来说意味着刷新令牌没有得到正确处理?
TestApp = [
Authentication = [
OAuth = [
StartLogin = StartLogin,FinishLogin = FinishLogin,Refresh = Refresh
]
],Label = Extension.LoadString("DataSourceLabel")
];
Refresh = (resourceUrl,refresh_token) => TokenMethod("refresh_token","refresh_token",refresh_token);
TokenMethod = (grantType,tokenField,code) =>
let
queryString = [
grant_type = grantType,redirect_uri = redirect_uri,client_id = client_id,client_secret = client_secret
],queryWithCode = Record.AddField(queryString,code),tokenResponse = Web.Contents(token_uri,[
Content = Text.ToBinary(Uri.BuildQueryString(queryWithCode)),Headers = [
#"Content-type" = "application/x-www-form-urlencoded",#"Accept" = "application/json"
],ManualStatusHandling = {400}
]),body = Json.Document(tokenResponse),result = if (Record.HasFields(body,{"error","error_description"})) then
error Error.Record(body[error],body[error_description],body)
else
body
in
result;
[DataSource.Kind="TestApp",Publish="TestApp.Publish"]
shared TestApp.Contents = () =>
let
bar = Web.Contents("https://myrestApiAddress")
in
bar;
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