VSTS任务输入dataSourceBindings无法正常工作

我正在维护一个VSTS / TFS扩展，其中包含一些构建任务和一些带有一些dataSource的自定义服务 endpoints 类型 . 我需要构建任务中的一个输入是一个pickList，其中填充了来自服务 endpoints 中定义的某个dataSource的信息 .

这是扩展清单中的 endpoints / dataSources定义：

{
"id": "kiuwan-service-endpoint",
"description": "Kiuwan servide endpoint to connect to the Kiuwan platform",
"type": "ms.vss-endpoint.service-endpoint-type",
"targets": [
    "ms.vss-endpoint.endpoint-types"
],
"properties": {
    "name": "kiuwan",
    "displayName": "Kiuwan Platform",
    "url": {
        "displayName": "Kiuwan URL",
        "value": "https://api.kiuwan.com",
        "helpMarkDown": "The Kiuwan Service Endpoint URL is always https://api.kiuwan.com"
    },
    "dataSources": [
        {
            "name": "TestConnection",
            "endpointUrl": "{{endpoint.url}}/info",
            "resultSelector": "jsonpath:$.username"
        },
        {
            "name": "ListApplications",
            "endpointUrl": "{{endpoint.url}}/apps/list",
            "resultSelector": "jsonpath:$.[*].name"
        }
    ],
    "authenticationSchemes": [
        {
            "type": "ms.vss-endpoint.endpoint-auth-scheme-basic",
            "inputDescriptors": [
                {
                    "id": "username",
                    "name": "Username",
                    "description": "This is your Kiuwan username",
                    "inputMode": "textbox",
                    "isConfidential": false,
                    "validation": {
                        "isrequired": true,
                        "dataType": "string"
                    }
                },
                {
                    "id": "password",
                    "name": "Password",
                    "description": "Yup! this is your Kiuwan password",
                    "inputMode": "passwordBox",
                    "isConfidential": true,
                    "validation": {
                        "isrequired": true,
                        "dataType": "string"
                    }
                }
            ]
        }
    ],
    "helpMarkdown": "<a href=\"https://www.kiuwam.com\" target=\"_blank\"><b>Learn More</b></a>"
    }
}

这是task.json文件中的相关任务输入定义和关联的dataSourceBinding：

"inputs": [
{
    "name": "kiuwanConnection",
    "type": "connectedService:Kiuwan",
    "label": "Kiuwan Service",
    "defaultValue": "",
    "required": true,
    "helpMarkDown": "Kiuwan service connection"
},
{
    "name": "kiuwanappname",
    "type": "pickList",
    "label": "Available Kiuwan applications",
    "required": false,
    "visibleRule": "projectnameselector = kiuwanapp",
    "helpMarkDown": "Select an existing application in Kiuwan to associate results to."
}
],
"dataSourceBindings": [
    {
        "target": "kiuwanappname",
        "endpointId": "$(kiuwanConnection)",
        "dataSourceName": "ListApplications",
        "resultTemplate": "{{#.}}{\"Value\": \"{{.}}\",\"DisplayValue\": \"{{.}}\"},{{/.}}"
    }
]

在我的本地TFS 2017上安装扩展程序进行测试后，我看到新服务 endpoints 下拉列表中提供的自定义服务类型 . 我为我的项目定义了一个新的设置正确的凭据 . 使用我定义的TestConnection数据源验证连接 .

但是，当我看到我的构建任务之一是应该用dataSource ListApplication的响应填充的选择列表时，它是空的 .

似乎问题可能是我在dataSourceBinding中定义的moustche模板 . 这是我应该从dataSource中的REST调用获得的：

[
   "A Customer Portal",
   "A Fine PHP Application",
   "A Simple Chess Game"
]

应用jsonpath后 . 使用dataSourceBinding中定义的模板从命令行运行小胡子，我得到了这个（在这种情况下我没有转义“）：

{"Value": "A Customer Portal","DisplayValue": "A Customer Portal"},{"Value": "A Fine PHP Application","DisplayValue": "A Fine PHP Application"},{"Value": "A Simple Chess Game","DisplayValue": "A Simple Chess Game"},

这是我的期望 .

任何想法为什么这可能不起作用？有没有办法调试这个？有什么方法可以知道是否正在对我的服务 endpoints 进行呼叫？除了在任务和扩展清单json文件中的拼写错误中可能存在拼写错误之外，这里可能存在不同的失败点（REST调用jsonpath，小胡子模板......而我是盲目的 .

我们非常感谢您提供的任何帮助 . 最好的，J .