microsoft / microsoft/onnxruntime
IR_VERSION and Opset Versions support via C API
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Description
Please help to add APIs supporting the reading of "**ONNX_IR_VERSION**" and "**OPSET_VERSIONS**" in C API and OnnxModelMetadata.java.
There are multiple essential version information in onnx models. Using python for example:
```
import onnx
model = onnx.load_model("model.onnx")
model.model_version
model.opset_import
model.ir_version
model.producer_version
```
However, there is only one version information from OnnxModelMetadata.java.
https://github.com/microsoft/onnxruntime/blob/07dc25e9390cf37c043c862de3ab41d266cca695/java/src/main/java/ai/onnxruntime/OnnxModelMetadata.java#L34
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked OnnxModelMetadata.java file and inspect the existing C API metadata entry points. Trace how model metadata is exposed in both APIs and identify the tests covering metadata access. Done means callers can read IR_VERSION and OPSET_VERSIONS in addition to the existing version information.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, cpp, java
- Domain
- api, machine-learning
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100