Manage reference data for an Azure Time Series Insights Gen 1 environment using C Sharp

This article demonstrates how to combine C#, MSAL.NET, and Microsoft Entra ID to make programmatic API requests to the Azure Time Series Insights Gen 1 Reference Data Management API.

Summary

The sample code below demonstrates the following features:

• Acquiring an access token using MSAL.NET PublicClientApplication.

• Sequential CREATE, READ, UPDATE, and DELETE operations against the Gen 1 Reference Data Management API.

• Common response codes including common error codes.

  The Reference Data Management API processes each item individually and an error with one item does not prevent the others from successfully completing. For example, if your request has 100 items and one item has an error, then 99 items are written and one is rejected.

Prerequisites and setup

Complete the following steps before you compile and run the sample code:

1. Provision a Gen 1 Azure Time Series Insights environment.

2. Create a Reference Data set within your environment. Use the following Reference Data scheme:

   Key name	Type
   uuid	String

3. Configure your Azure Time Series Insights environment for Microsoft Entra ID as described in Authentication and authorization. Use http://localhost:8080/ as the Redirect URI.

4. Install the required project dependencies.

5. Edit the sample code below by replacing each #PLACEHOLDER# with the appropriate environment identifier.

6. Run dotnet run within the root directory of your project. When prompted, use your user profile to sign in to Azure.

Project dependencies

It's recommended that you use the newest version of Visual Studio and NETCore.app:

• Visual Studio 2019 - Version 16.4.2+
• NETCore.app - Version 2.2.8

The sample code has two required dependencies:

• MSAL.NET Microsoft.Identity.Client - 4.7.1 package.
• Newtonsoft.Json - 12.0.3 package.

Add the packages using NuGet 2.12+:

• dotnet add package Newtonsoft.Json --version 12.0.3
• dotnet add package Microsoft.Identity.Client --version 4.7.1

Or:

1. Declare a csharp-tsi-msal-ga-sample.csproj file:

   <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
       <OutputType>Exe</OutputType>
       <TargetFramework>netcoreapp2.1</TargetFramework>
       <LangVersion>latest</LangVersion>
       <RootNamespace>csharp-tsi-msal-ga-sample</RootNamespace>
       <RunWorkingDirectory>$(MSBuildThisFileDirectory)</RunWorkingDirectory>
     </PropertyGroup>
     <ItemGroup>
       <PackageReference Include="Microsoft.Identity.Client" Version="4.7.1.0" Culture="neutral" PublicKeyToken="0a613f4dd989e8ae" />
       <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     </ItemGroup>
   </Project>
   

2. Then run dotnet restore.

C# sample code

// Copyright (c) Microsoft Corporation.  All rights reserved.

namespace CsharpTsiMsalGaSample
{
    using Microsoft.Identity.Client;
    using Newtonsoft.Json;
    using Newtonsoft.Json.Linq;
    using System;
    using System.IO;
    using System.Net.Http;
    using System.Text;
    using System.Threading.Tasks;

    public static class Program
    {
        /**
         * Review the product documentation for detailed configuration steps or skip ahead and configure your environment settings.
         *
         * https://learn.microsoft.com/azure/time-series-insights/time-series-insights-authentication-and-authorization
         */

        // Azure Time Series Insights environment configuration
        internal static string EnvironmentFqdn = "#PLACEHOLDER#.env.timeseries.azure.com";
        internal static string EnvironmentReferenceDataSetName = "#PLACEHOLDER#";

        // Azure Active Directory application configuration
        internal static string AadClientApplicationId = "#PLACEHOLDER#";
        internal static string[] AadScopes = new string[] { "https://api.timeseries.azure.com//user_impersonation" };
        internal static string AadRedirectUri = "http://localhost:8080/";
        internal static string AadTenantName = "#PLACEHOLDER#";
        internal static string AadAuthenticationAuthority = "https://login.microsoftonline.com/" + AadTenantName + ".onmicrosoft.com/oauth2/authorize?resource=https://api.timeseries.azure.com/";

        private static async Task<string> AcquireAccessTokenAsync()
        {
            if (AadClientApplicationId == "#PLACEHOLDER#" || AadScopes.Length == 0 || AadRedirectUri == "#PLACEHOLDER#" || AadTenantName.StartsWith("#PLACEHOLDER#"))
            {
                throw new Exception($"Use the link {"https://learn.microsoft.com/azure/time-series-insights/time-series-insights-get-started"} to update the values of 'AadClientApplicationId', 'AadScopes', 'AadRedirectUri', and 'AadAuthenticationAuthority'.");
            }

            /**
             * MSAL.NET configuration. Review the product documentation for more information about MSAL.NET authentication options.
             *
             * https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/wiki/
             */

            IPublicClientApplication app = PublicClientApplicationBuilder
                .Create(AadClientApplicationId)
                .WithRedirectUri(AadRedirectUri)
                .WithAuthority(AadAuthenticationAuthority)
                .Build();

            AuthenticationResult result = await app
                .AcquireTokenInteractive(AadScopes)
                .ExecuteAsync();

            Console.WriteLine("MSAL Authentication Token Acquired: {0}", result.AccessToken);
            Console.WriteLine("");
            return result.AccessToken;
        }

        // System.Net.HttpClient helper to wrap HTTP POST made to the GA Reference Data API
        private static async Task<HttpResponseMessage> AsyncHttpPostRequestHelper(HttpClient httpClient, string input)
        {
             if (EnvironmentFqdn.StartsWith("#PLACEHOLDER#") || EnvironmentReferenceDataSetName == "#PLACEHOLDER#")
             {
                throw new Exception($"Use the link {"https://learn.microsoft.com/azure/time-series-insights/time-series-insights-authentication-and-authorization"} to update the values of 'EnvironmentFqdn' and 'EnvironmentReferenceDataSetName'.");
             }

             Console.WriteLine("HTTP JSON Request Body: {0}", input);
             Console.WriteLine("");
             HttpContent requestBody = new StringContent(input, Encoding.UTF8, "application/json");

             Uri uri = new UriBuilder("https", EnvironmentFqdn)
             {
                Path = $"referencedatasets/{EnvironmentReferenceDataSetName}/$batch",
                Query = "api-version=2016-12-12"
             }.Uri;

             Console.WriteLine("Making HTTP POST to URI: {0}", uri);
             Console.WriteLine("");

             HttpResponseMessage response = await httpClient.PostAsync(uri, requestBody);
             if (response.IsSuccessStatusCode)
             {
                var jsonString = await response.Content.ReadAsStringAsync();
                var jsonStringTransferObject = JsonConvert.DeserializeObject<object>(jsonString);
                Console.WriteLine("HTTP JSON Response Body: {0}", jsonStringTransferObject);
                Console.WriteLine("");
                return response;
             }

             return null;
        }

        private static async Task TsiMsalGaSample()
        {
            Console.WriteLine("Beginning demo...");
            Console.WriteLine("");
            Console.WriteLine("The following samples assume a single Key Name (uuid) with String type...");
            Console.WriteLine("");

            string accessToken = await AcquireAccessTokenAsync();
            var httpClient = new HttpClient();
            httpClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + accessToken);

            {
                // CREATE reference data
                Console.WriteLine("CREATE reference data example...");
                Console.WriteLine("");
                string createInput = @"
                    {
                        ""put"": [
                            {
                                ""uuid"": ""Fan1""
                            },
                            {
                                ""uuid"": ""Fan2"",
                                ""color"": ""White"",
                                ""floor"": 2
                            },
                            {
                                ""uuid"": ""Fan3"",
                                ""color"": ""Red"",
                                ""maxSpeed"": 5
                            }
                        ]
                    }";

                var createResponse = await AsyncHttpPostRequestHelper(httpClient, createInput);

                // READ reference data
                Console.WriteLine("READ reference data example...");
                Console.WriteLine("");
                string readInput = @"
                    {
                        ""get"": [
                            {
                                ""uuid"": ""Fan1""
                            },
                            {
                                ""uuid"": ""Fan2"",
                                ""color"": ""White"",
                                ""desc"": ""example""
                            },
                            {
                                ""uuid"": ""Fan3"",
                                ""color"": ""Red"",
                                ""maxSpeed"": 5
                            }
                        ]
                    }";

                var readResponse = await AsyncHttpPostRequestHelper(httpClient, readInput);

                // UPDATE reference data
                Console.WriteLine("UPDATE reference data example...");
                Console.WriteLine("");
                string updateInput = @"
                    {
                        ""patch"": [
                            {
                                ""uuid"": ""Fan1"",
                                ""color"": ""Red""
                            },
                            {
                                ""uuid"": ""Fan2"",
                                ""color"": ""Orange""
                            },
                            {
                                ""uuid"": ""Fan3"",
                                ""desc"": ""Example""
                            }
                        ]
                    }";

                var inputResponse = await AsyncHttpPostRequestHelper(httpClient, updateInput);

                // DELETE reference data
                Console.WriteLine("DELETE reference data example...");
                Console.WriteLine("");
                string deleteInput = @"
                    {
                        ""delete"": [
                            {
                                ""uuid"": ""Fan1""
                            },
                            {
                                ""uuid"": ""Fan2"",
                                ""color"": ""Orange""
                            },
                            {
                                ""uuid"": ""Fan2"",
                                ""desc"": ""Blue""
                            }
                        ]
                    }";

                var deleteResponse = await AsyncHttpPostRequestHelper(httpClient, deleteInput);
            }
        }

        internal static void Main(string[] args)
        {
            Task.Run(async () => await TsiMsalGaSample()).Wait();
        }
    }
}

Next steps

• Read the Gen 1 Reference Data Management API reference documentation.