Package

OpenTelemetry.Exporter.OpenTelemetryProtocol

Package Version

here's my csproj lineup:

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

  <PropertyGroup>
    <TargetFramework>net9.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <UserSecretsId>agentless-otel-datadog</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Extensions.Telemetry" Version="9.9.0" />
    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0" />
    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.12.0" />
    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
    <PackageReference Include="OpenTelemetry.Instrumentation.Runtime" Version="1.12.0" />
  </ItemGroup>

</Project>

Runtime Version

net9.0

Description

I'm seeing 400 in my logs when the Periodic Metrics exporter try to export Metrics to datadog

HttpClient gets Error 400 - "\b\u0003\u0012MInvalid protobuf structure: proto: wrong wireType = 1 for field BucketCounts\n"

it look like similar to this one:
open-telemetry/opentelemetry-collector#13727

see bellow for my repository link (inside that repo there's most of the link i've used to built it up for references)

Steps to Reproduce

The impossible part is ...

• Get a Datadog account
• ask to be whitelisted for their OTEL Metrics endpoint
  (if there's a need for a call or a session for debugging, or stuff to try, feel free to suggest)

The possible part:

• clone the repo: https://github.com/tebeco/AgentLessOtelDataDog
• set the API KEY as mentioned
• press F5
• Look at the logs
• Enable Exception breaking everything

Expected Result

OtelExporter, should managed to export metrics (i don't mean to be hard on that, i just don't know how to phrase it)

But I'm opening this ticket because I have no idea of the source

• My code
• My config
• one of the package here
• datadog side ingestion point (I have raised this ticket to their support already to be clear)

the reason I've decided to also open it here is because of open-telemetry/opentelemetry-collector#13727

Actual Result

no metrics are sent

Additional Context

I have raised this ticket to their support already to be clear as I don't know where the failure happens

Tip

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