# OpenTelemetryCollectorRoutingExtensions Methods

- Package: [CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector](/reference/api/csharp/communitytoolkit.aspire.hosting.opentelemetrycollector.md)
- Type: [OpenTelemetryCollectorRoutingExtensions](/reference/api/csharp/communitytoolkit.aspire.hosting.opentelemetrycollector/opentelemetrycollectorroutingextensions.md)
- Kind: `Methods`
- Members: `1`

Hooks to add the OTLP environment variables to the various resources

## WithOpenTelemetryCollectorRouting(IResourceBuilder<T>, IResourceBuilder<OpenTelemetryCollectorResource>)

- Name: `WithOpenTelemetryCollectorRouting(IResourceBuilder<T>, IResourceBuilder<OpenTelemetryCollectorResource>)`
- Modifiers: `extension`
- Returns: `IResourceBuilder<T>`
- Source: [GitHub](https://github.com/CommunityToolkit/Aspire/blob/67afcca30f02c18687f9c5219313710af9706630/src/CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector/OpenTelemetryCollectorRoutingExtensions.cs#L19-L32)

Resource the telemetry for the resource through the specified OpenTelemetry Collector

```csharp
public static class OpenTelemetryCollectorRoutingExtensions
{
    public static IResourceBuilder<T> WithOpenTelemetryCollectorRouting<T>(
        this IResourceBuilder<T> builder,
        IResourceBuilder<OpenTelemetryCollectorResource> collectorBuilder)
    {
        // ...
    }
}
```

## Parameters

- `builder` (`IResourceBuilder<T>`)
- `collectorBuilder` (`IResourceBuilder<OpenTelemetryCollectorResource>`)