可以从基于PowerShell的VSTS构建任务使用ExtensionDataService吗？(Can ExtensionDataService be used from a PowerShell-based VSTS build task?)

 我为Visual Studio Team Services（以前称为Visual Studio Online）创建了基于PowerShell的构建任务。 我已经实现了我需要的大部分功能，但是对于最后一点功能，我需要能够在构建之间保留少量数据。 
 
 ExtensionDataService看起来就像我想要的那样（特别是setValue和getValue方法），但我发现的文档和示例都是基于node.js的构建任务： 
 
    VSS.getService(VSS.ServiceIds.ExtensionData).then(function(dataService) {
    // Set a user-scoped preference
    dataService.setValue("pref1", 12345, {scopeType: "User"}).then(function(value) {
        console.log("User preference value is " + value);
    });
 
 上一页还有调用REST API的部分示例，但在尝试使用它来保存或检索值时，我遇到了404错误： 
 
GET _apis/ExtensionManagement/InstalledExtensions/{publisherName}/{extensionName}/Data/Scopes/User/Me/Collections/%24settings/Documents
{
    "id": "myKey",
    "__etag": -1,
    "value": "myValue"
}
 
 PowerShell可以通过使用库或直接调用REST API来访问ExtensionDataService吗？ 

I have created a PowerShell-based build task for Visual Studio Team Services (formerly Visual Studio Online). I have implemented the majority of the functionality I need, but for the last bit of functionality I need to be able to persist a small amount of data between builds.
 
The ExtensionDataService seems like exactly what I want (in particular, the setValue and getValue methods), but the documentation and examples I have found are for node.js-based build tasks:
 
    VSS.getService(VSS.ServiceIds.ExtensionData).then(function(dataService) {
    // Set a user-scoped preference
    dataService.setValue("pref1", 12345, {scopeType: "User"}).then(function(value) {
        console.log("User preference value is " + value);
    });
 
The previous page also has a partial example of calling the REST API, but I have gotten 404 errors when trying to use it to either save or retrieve values:
 
GET _apis/ExtensionManagement/InstalledExtensions/{publisherName}/{extensionName}/Data/Scopes/User/Me/Collections/%24settings/Documents
{
    "id": "myKey",
    "__etag": -1,
    "value": "myValue"
}
 
Can PowerShell be used to access the ExtensionDataService, either by using a library or by calling the REST API directly?

原文：https://stackoverflow.com/questions/41253357