How to get an AzureRateCard with Java?

Question

for my Java program I need an Azure pricelist. For this Azure has an API which you can use for a AzureRateCard (you can see this here: https://learn.microsoft.com/en-us/azure/cloud-solution-provider/integration/manage-billing/get-azure-prices). Unfortunately I never worked with an API and I don't know what to do with this informations.

I hope I find somebody who already worked with this API :D Thank you!

Answer 1

I have a sample code to get Azure RateCard Json response via Billing REST API Get price and metadata information for resources used in an Azure subscription, not SDK for Java because I don't know where the SDK is. It works fine for me.

Here is my sample code.

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;

public class RateCardRest {

    public static String getAccessToken(String tenantId, String clientId, String clientSecret)
            throws MalformedURLException, IOException {
        String endpoint = String.format("https://login.microsoftonline.com/%s/oauth2/token", tenantId);
        String postBody = String.format("grant_type=client_credentials&client_id=%s&client_secret=%s&resource=%s",
                clientId, clientSecret, "https://management.azure.com/");
        HttpURLConnection conn = (HttpURLConnection) new URL(endpoint).openConnection();
        conn.setRequestMethod("POST");
        conn.addRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setDoOutput(true);
        conn.getOutputStream().write(postBody.getBytes());
        conn.connect();
//      If you want to see the response content, please use the commented code below.
//      BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
//      StringBuilder builder = new StringBuilder();
//      String line = null;
//      while ((line = reader.readLine()) != null) {
//          builder.append(line);
//      }
//      reader.close();
//      System.out.println(builder.toString());
//      The output for access token is {"token_type":"Bearer","expires_in":"3600","ext_expires_in":"3600","expires_on":"1550660092","not_before":"1550656192","resource":"https://management.azure.com/","access_token":"eyJ0eXAiOiJKV1QiL...."}
        JsonFactory factory = new JsonFactory();
        JsonParser parser = factory.createParser(conn.getInputStream());
        String accessToken = null;
        while (parser.nextToken() != JsonToken.END_OBJECT) {
            String name = parser.getCurrentName();
            if ("access_token".equals(name)) {
                parser.nextToken();
                accessToken = parser.getText();
            }
        }
        return accessToken;
    }

    public static String getRateCard(String subscriptionId, String apiVersion, String offerId, String currency,
            String locale, String region, String accessToken) throws MalformedURLException, IOException {
        String endpoint = String.format(
                "https://management.azure.com/subscriptions/%s/providers/Microsoft.Commerce/RateCard?api-version=%s&$filter=OfferDurableId eq '%s' and Currency eq '%s' and Locale eq '%s' and RegionInfo eq '%s'",
                subscriptionId, apiVersion, offerId, currency, locale, region).replaceAll(" ", "%20");
        HttpURLConnection conn = (HttpURLConnection) new URL(endpoint).openConnection();
        conn.setRequestMethod("GET");
        conn.addRequestProperty("Authorization", "Bearer " + accessToken);
        conn.addRequestProperty("Content-Type", "application/json");
        conn.connect();
        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        StringBuilder builder = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            builder.append(line);
        }
        reader.close();
        return builder.toString();
    }

    public static void main(String[] args) throws MalformedURLException, IOException {
        String tenantId = "<your tenant id like xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx";
        String clientId = "<your client id registed in AAD like xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx";
        String clientSecret = "<your client secret key generated in AAD>";
        String accessToken = getAccessToken(tenantId, clientId, clientSecret);
        System.out.println(accessToken);
        String subscriptionId = "<your subscription id like xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx";
        String apiVersion = "2015-06-01-preview";
        String offerId = "<your offer id like XX-AZR-XXXXX";
        String currency = "USD";
        String locale = "en-US";
        String region = "US";
        String rateCardResp = getRateCard(subscriptionId, apiVersion, offerId, currency, locale, region, accessToken);
        System.out.println(rateCardResp);
    }

}

Note: The size of rateCardResp content is about 7 MB, so it will cost more time for downloading. Please store it to a file as data cache.

Note: for using the code below, you have to collect these parameters on Azure portal as below.

1. Follow the section Register your client application with Azure AD of the offical document Azure REST API Reference to regist an application to get the clientId and clientSecret and grant the Owner role with its required permission to your application in Azure AD.

2. Move to your subscription to get the subscription id & offer id.

If you have any concern, please feel free to let me know and I will update my post in detail.