support circular reference of protobuf

[fuyufjh]

Is your feature request related to a problem? Please describe.

This proto is not supported due to circular reference.

https://github.com/open-telemetry/opentelemetry-proto/blob/main/opentelemetry/proto/common/v1/common.proto

[2024-12-18 17:12:48] 3: circular reference detected: resource_metrics(opentelemetry.proto.collector.metrics.v1.ExportMetricsServiceRequest.resource_metrics)->resource(opentelemetry.proto.metrics.v1.ResourceMetrics.resource)->attributes(opentelemetry.proto.resource.v1.Resource.attributes)->value(opentelemetry.proto.common.v1.KeyValue.value)->array_value(opentelemetry.proto.common.v1.AnyValue.array_value)->values(opentelemetry.proto.common.v1.ArrayValue.values), conflict with array_value(opentelemetry.proto.common.v1.AnyValue.array_value), kind opentelemetry.proto.common.v1.ArrayValue

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

[fuyufjh]

For this particular case, shall we handle this AnyValue in the same way of #12291 ?

[tabVersion]

For this particular case, shall we handle this AnyValue in the same way of #12291 ?

Yes, @xiangjinwu and I have a solution on it.

[xiangjinwu]

For this particular case, shall we handle this AnyValue in the same way of #12291 ?

• This AnyValue is closer to Value (unsupported yet) rather than Any (#18380 supersedes #12291)
• It is a coincidence that we can support both Any and Value (thus AnyValue here) leveraging protobuf's canonical JSON encoding.