我想使用API从Azure数据目录中获取目录的名称。当我尝试使用以下命令从Azure数据目录获取目录
时requests.get("https://management.azure.com/subscriptions/{id}/resourceGroups/{group_name}/providers/Microsoft.DataCatalog/catalogs/{catalogname}")
如链接https://docs.microsoft.com/en-us/rest/api/datacatalog/data-catalog-data-catalog
中所述它引发以下错误
响应[400]
好像我必须先进行身份验证。在获取目录之前如何进行身份验证？
答案 0 :(得分：1)
要调用数据目录REST操作，请创建AuthenticationContext实例并调用AcquireToken。 AuthenticationContext是Active Directory身份验证库NuGet包的一部分。要在Visual Studio中安装Active Directory身份验证库NuGet包，请运行
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <cstdlib>
#include <string>
#include <iomanip>
#include <fstream>
using namespace std;
//int calculatorMin(string fileName);
//void displayInfo(double mean, int main);
string getFileInfo();
double calculateMean (string fileName);
// main
int main ()
{
string filename = getFileInfo(); // getting file name
double mean = calculateMean( filename); // avg
return 0;
}
// function for getting file
string getFileInfo() {
string filename;
ifstream inputFile;
cout << "Please enter a file name to read from: ";
cin >> filename;
inputFile.open(filename);
if (inputFile)
{
inputFile.close();
}
else
{
cout << "Error: Please enter a file name to read from: ";
cin >> filename;
}
//if it opens then name is good and close file then return name
//if it didn't open, ask for a new name.
return filename;
}
// funtion for mean
double calculateMean(string fileName)
{
ifstream infile;
float num=0;
float total = 0.0;
int count = 0;
infile.open(fileName);
// While infile successfully extracted numbers from the stream
while(infile >> num) {
total += num;
++count;
}
// don't need the file anymore, close it
infile.close();
cout << "The mean was " << total/count << endl;
// give the average
return total/count;
}
从NuGet程序包管理器控制台。
这是获取相同令牌的代码。
"Install-Package Microsoft.IdentityModel.Clients.ActiveDirectory"
这是获取基于id的数据资产的示例代码
static async Task<AuthenticationResult> AccessToken()
{
if (authResult == null)
{
//Resource Uri for Data Catalog API
string resourceUri = "https://api.azuredatacatalog.com";
//To learn how to register a client app and get a Client ID, see https://msdn.microsoft.com/en-us/library/azure/mt403303.aspx#clientID
string clientId = clientIDFromAzureAppRegistration;
//A redirect uri gives AAD more details about the specific application that it will authenticate.
//Since a client app does not have an external service to redirect to, this Uri is the standard placeholder for a client app.
string redirectUri = "https://login.live.com/oauth20_desktop.srf";
// Create an instance of AuthenticationContext to acquire an Azure access token
// OAuth2 authority Uri
string authorityUri = "https://login.windows.net/common/oauth2/authorize";
AuthenticationContext authContext = new AuthenticationContext(authorityUri);
// Call AcquireToken to get an Azure token from Azure Active Directory token issuance endpoint
// AcquireToken takes a Client Id that Azure AD creates when you register your client app.
authResult = await authContext.AcquireTokenAsync(resourceUri, clientId, new Uri(redirectUri), new PlatformParameters(PromptBehavior.Always));
}
return authResult;
}
在这里，您可以设置请求，令牌并获得响应。
// The Get Data Asset operation retrieves data asset by Id
static JObject GetDataAsset(string assetUrl)
{
string fullUri = string.Format("{0}?api-version=2016-03-30", assetUrl);
//Create a GET WebRequest as a Json content type
HttpWebRequest request = WebRequest.Create(fullUri) as HttpWebRequest;
request.KeepAlive = true;
request.Method = "GET";
request.Accept = "application/json;adc.metadata=full";
try
{
var response = SetRequestAndGetResponse(request);
using (var reader = new StreamReader(response.GetResponseStream()))
{
var itemPayload = reader.ReadToEnd();
Console.WriteLine(itemPayload);
return JObject.Parse(itemPayload);
}
}
catch (WebException ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.Status);
if (ex.Response != null)
{
// can use ex.Response.Status, .StatusDescription
if (ex.Response.ContentLength != 0)
{
using (var stream = ex.Response.GetResponseStream())
{
using (var reader = new StreamReader(stream))
{
Console.WriteLine(reader.ReadToEnd());
}
}
}
}
}
return null;
}
基本上，您需要获取Bearer令牌并将其作为请求参数传递，以便使用Azure数据目录api获得目录。
有关更多代码示例，请浏览下面的代码库。
https://github.com/Azure-Samples/data-catalog-dotnet-get-started
希望有帮助。
答案 1 :(得分：1)
在python中添加新答案
要在python中获取身份验证上下文，您可以执行以下操作
这是调用图api时所需的参数设置。
RESOURCE = "https://graph.microsoft.com" # Add the resource you want the access token for
TENANT = "Your tenant" # Enter tenant name, e.g. contoso.onmicrosoft.com
AUTHORITY_HOST_URL = "https://login.microsoftonline.com"
CLIENT_ID = "Your client id " # copy the Application ID of your app from your Azure portal
CLIENT_SECRET = "Your client secret" # copy the value of key you generated when setting up the application
# These settings are for the Microsoft Graph API Call
API_VERSION = 'v1.0'
这是登录代码
AUTHORITY_URL = config.AUTHORITY_HOST_URL + '/' + config.TENANT
REDIRECT_URI = 'http://localhost:{}/getAToken'.format(PORT)
TEMPLATE_AUTHZ_URL = ('https://login.microsoftonline.com/{}/oauth2/authorize?' +
'response_type=code&client_id={}&redirect_uri={}&' +
'state={}&resource={}')
def login():
auth_state = str(uuid.uuid4())
flask.session['state'] = auth_state
authorization_url = TEMPLATE_AUTHZ_URL.format(
config.TENANT,
config.CLIENT_ID,
REDIRECT_URI,
auth_state,
config.RESOURCE)
resp = flask.Response(status=307)
resp.headers['location'] = authorization_url
return resp
这是获取令牌的方式
auth_context = adal.AuthenticationContext(AUTHORITY_URL)
token_response = auth_context.acquire_token_with_authorization_code(code, REDIRECT_URI, config.RESOURCE,
config.CLIENT_ID, config.CLIENT_SECRET)
，然后可以为您的azure数据目录api创建一个端点。这是相同的http标头-
http_headers = {'Authorization': 'Bearer ' + token_response['accessToken'],
'User-Agent': 'adal-python-sample',
'Accept': 'application/json',
'Content-Type': 'application/json',
'client-request-id': str(uuid.uuid4())}
，最后您可以调用api。这里的端点是数据目录API URL。
data = requests.get(endpoint, headers=http_headers, stream=False).json()
希望有帮助。