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additional comments on filtering doc (#3135)

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Timothy Mothra 2022-04-01 16:54:04 -07:00 committed by GitHub
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docs/logs/customizing-the-sdk/README.md
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@ -79,7 +79,7 @@ environmental variables:
| `OTEL_RESOURCE_ATTRIBUTES` | Key-value pairs to be used as resource attributes. See the [Resource SDK specification](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.5.0/specification/resource/sdk.md#specifying-resource-information-via-an-environment-variable) for more details. |
| `OTEL_SERVICE_NAME` | Sets the value of the `service.name` resource attribute. If `service.name` is also provided in `OTEL_RESOURCE_ATTRIBUTES`, then `OTEL_SERVICE_NAME` takes precedence. |
## Filtering LogLevels
## Log Filtering
[`ILogger`](https://docs.microsoft.com/dotnet/core/extensions/logging)
implementations have a built-in mechanism to apply [log
@ -92,6 +92,7 @@ rules.
The example below defines "Error" as the default `LogLevel`
and also defines "Warning" as the minimum `LogLevel` for a user defined category.
These rules as defined only apply to the `OpenTelemetryLoggerProvider`.
```csharp
ILoggingBuilder.AddFilter<OpenTelemetryLoggerProvider>("*", LogLevel.Error);
@ -102,4 +103,3 @@ ILoggingBuilder.AddFilter<OpenTelemetryLoggerProvider>("category name", LogLevel
* See also the official guide for
[Logging in .NET](https://docs.microsoft.com/dotnet/core/extensions/logging).
* [`LogLevel`](https://docs.microsoft.com/dotnet/api/microsoft.extensions.logging.loglevel)