OtlpExportProtocol does not exist in the namespace 'OpenTelemetry.Exporter.OpenTelemetryProtocol'.

[saikalyan-bhagavathula]

Bug Report

Symptom

Describe the bug OtlpExportProtocol does not exist in the namespace 'OpenTelemetry.Exporter.OpenTelemetryProtocol'.

My Program.cs file

using System.Diagnostics;
using OpenTelemetry.Resources;
using OpenTelemetry.Trace;
using OpenTelemetry;
using OpenTelemetry.Exporter.OpenTelemetryProtocol.OtlpExportProtocol;


var builder = WebApplication.CreateBuilder(args);

builder.Services.AddOpenTelemetry()
  .WithTracing(b =>
  {
    b.AddSource(DiagnosticsConfig.ActivitySource.Name);
    b.ConfigureResource(resource => resource
    .AddService(DiagnosticsConfig.ServiceName));
    b.AddAspNetCoreInstrumentation() 
    .AddOtlpExporter(opt =>
    {
        opt.Endpoint = new Uri("http://localhost:4317");
        opt.Protocol = OpenTelemetry.Exporter.OpenTelemetryProtocol.OtlpExportProtocol.Grpc;
    });
    b.AddConsoleExporter();
  });


var app = builder.Build();
app.MapGet("/", () => "Hello World!");
app.Run();


public static class DiagnosticsConfig
{
    public const string ServiceName = "MyService";
    public static ActivitySource ActivitySource = new ActivitySource(ServiceName);
}

My MyWebApp.csproj

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net7.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.5.1" />
    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.5.1" />
    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.5.1" />
    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.5.0-beta.1" />
  </ItemGroup>

</Project>

Getting Following error when I do dotnet run using above code files

/MyWebApp# dotnet run
Building...
/home/dotnet/Automatic/MyWebApp/Program.cs(5,52): error CS0234: The type or namespace name 'OtlpExportProtocol' does not exist in the namespace 'OpenTelemetry.Exporter.OpenTelemetryProtocol' (are you missing an assembly reference?) [/home/dotnet/Automatic/MyWebApp/MyWebApp.csproj]

The build failed. Fix the build errors and run again.

Expected behavior Push traces to http://localhost:4317 without any error.

Runtime environment (please complete the following information): NAME="Ubuntu" VERSION="20.04.5 LTS (Focal Fossa)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 20.04.5 LTS" VERSION_ID="20.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=focal UBUNTU_CODENAME=focal

Additional context

• Even for Http i am getting the same error. Able to get trace/span data in console but with Otlp exporter getting the mentioned error.
• If we remove the protocol option no error is throwing but unable to see the trace data in listener side.

Reproduce

Steps to reproduce the behavior:

1. use the above files in default dotnet app.

[RassK]

@saikalyan-bhagavathula seems like this issue is more suitable for opentelemetry-dotnet. Could not notice anything connected to AutoInstrumentation (since you are setting up everything manually).

[nrcventura]

@open-telemetry/dotnet-approvers and @open-telemetry/dotnet-maintainers this issue was submitted to the auto-instrumentation repo, but appears to be a problem when using the SDK directly. I'm closing the issue in this repo but you may want to follow up with the submitter in case you need more information.

[Kielek]

Reopening and transfering to main repository.

[chrisribe]

Updates ? Same issue here.