Azure Function App : Dependency not found

Hi,

I had a little Azure Function App, using blob trigger scenario in c#. This app has a simple job : json validation using newtonsoft. I validate json with schema generated by model annotations.

Here is my validation code:

#r "System.Linq"
#r "Newtonsoft.Json"
#r "Newtonsoft.Json.Schema"

using System.Collections.Generic;
using System.Linq;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json.Schema;
using Newtonsoft.Json.Schema.Generation;

public static class Json
{
    public static T Deserialize<T>(string content, bool validate = true) 
        where T : class, new()
    {
        if (validate)
        {
            var errors = Validate<T>(content);
            if (errors.Any())
            {
                //log.Error(string.Join("\n", errors));
                return null;
            }
        }

        var serializerSettings = new JsonSerializerSettings
        {
            Error = (sender, e) =>
            {
                //log.Error(e.ErrorContext.Error.Message);
                e.ErrorContext.Handled = true;
            }
        };

        return JsonConvert.DeserializeObject<T>(content, serializerSettings);
    }

    private static IList<string> Validate<T>(string content)
    {
        // Generates schema
        var generator = new JSchemaGenerator();
        var schema = generator.Generate(typeof(T));

        var data = JObject.Parse(content);

        IList<string> messages;

        // Validates
        data.IsValid(schema, out messages);

        if (messages.Any())
        {
            //log.Error($"\n// Generated schema for '{typeof(T).Name}' class:\n" + schema);
        }
        
        return messages;
    }
}

This code does not compile and I have these logs :

json.csx(5,1): error CS0006: Metadata file 'Newtonsoft.Json.Schema' could not be found
json.csx(12,30): error CS0234: The type or namespace name 'Generation' does not exist in the namespace 'Newtonsoft.Json.Schema' (are you missing an assembly reference?)
json.csx(44,29): error CS0246: The type or namespace name 'JSchemaGenerator' could not be found (are you missing a using directive or an assembly reference?)
Compilation failed.

My function.json file seems to be good:

  "frameworks": {
    "net46": {
      "dependencies": {
        "Newtonsoft.Json": "10.0.2",
        "Newtonsoft.Json.Schema": "2.0.10"
      }
    }

I run the same code locally in a console app without troubles.

If it can help, the package Newtonsoft.Json.Schema adds extension methods to Newtonsoft.Json package classes and extends Newtonsoft.Json.Schema namespace.

I triple check every setup … help 😃

[oluwaseunladeinde]

Hello everyone, I am having a situation trying to setup my Power BI Embed function to generate my code.

project.json

{ "frameworks": { "net46":{ "dependencies": { "Microsoft.IdentityModel.Clients.ActiveDirectory": "3.19.4", "Microsoft.PowerBI.Api": "2.0.12" } } } }

run.csx

`#r “System.Web.Extensions” using System.Configuration; using System.Net; using System.Text; using System.Web.Script.Serialization; using Microsoft.IdentityModel.Clients.ActiveDirectory; using Microsoft.PowerBI.Api.V2; using Microsoft.PowerBI.Api.V2.Models; using Microsoft.Rest;

// Static Values static string authorityUrl = “https://login.windows.net/common/oauth2/authorize/”; static string resourceUrl = “https://analysis.windows.net/powerbi/api”; static string apiUrl = “https://api.powerbi.com/”; static string clientId = ConfigurationManager.AppSettings[“PBIE_CLIENT_ID”]; static string username = ConfigurationManager.AppSettings[“PBIE_USERNAME”]; static string password = ConfigurationManager.AppSettings[“PBIE_PASSWORD”]; static string groupId = ConfigurationManager.AppSettings[“PBIE_GROUP_ID”]; static string reportId = ConfigurationManager.AppSettings[“PBIE_REPORT_ID”];

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log) {

// Authenticate with Azure Ad > Get Access Token > Get Token Credentials
var credential = new UserPasswordCredential(username, password);
var authenticationContext = new AuthenticationContext(authorityUrl);
var authenticationResult = await authenticationContext.AcquireTokenAsync(resourceUrl, clientId, credential);
string accessToken = authenticationResult.AccessToken;
var tokenCredentials = new TokenCredentials(accessToken, "Bearer");

using (var client = new PowerBIClient(new Uri(apiUrl), tokenCredentials))
{
    // Embed URL
    Report report = client.Reports.GetReportInGroup(groupId, reportId);
    string embedUrl = report.EmbedUrl;

    // Embed Token
    var generateTokenRequestParameters = new GenerateTokenRequest(accessLevel: "view");
    EmbedToken embedToken = client.Reports.GenerateTokenInGroup(groupId, reportId, generateTokenRequestParameters);

    // JSON Response
    EmbedContent data = new EmbedContent();
    data.EmbedToken = embedToken.Token;
    data.EmbedUrl = embedUrl;
    data.ReportId = reportId;
    JavaScriptSerializer js = new JavaScriptSerializer();
    string jsonp = "callback(" +  js.Serialize(data) + ");";

    // Return Response
    return new HttpResponseMessage(HttpStatusCode.OK) 
    {
        Content = new StringContent(jsonp, Encoding.UTF8, "application/json")
    };
}

}

public class EmbedContent { public string EmbedToken { get; set; } public string EmbedUrl { get; set; } public string ReportId { get; set; } } `

I am new to .NET. I just need to get my Power BI Embed functionality working. Is there a better way to have written this function.

I get the error as follows:

2018-11-16T19:33:30.532 [Error] run.csx(1,1): error CS0006: Metadata file ‘System.Web.Extensions’ could not be found 2018-11-16T19:33:30.624 [Error] run.csx(5,18): error CS0234: The type or namespace name ‘Script’ does not exist in the namespace ‘System.Web’ (are you missing an assembly reference?) 2018-11-16T19:33:30.833 [Error] Executed ‘Functions.HttpTrigger1’ (Failed, Id=fdb35668-e024-4ba7-9dc9-ab1bf3e84c2a)

I would appreciate any help I can get at this point. Thanks guys.

[PeterSelchDahl]

Hi Oluwaseun, Try having a look at this article. https://blogs.msdn.microsoft.com/cjaliaga/2018/01/21/installing-nuget-packages-in-azure-functions-2-x-runtime-preview/

Best Regards, Peter Selch Dahl Azure MVP