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LocalModelRegistry

adk_rust::audio::registry

Struct LocalModelRegistry 

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pub struct LocalModelRegistry { /* private fields */ }
Available on crate feature audio only.
Expand description

Registry for managing local model downloads and caching.

Supports both MLX-format (.safetensors + config.json) and ONNX-format (.onnx) models from HuggingFace Hub.

On first access the model is downloaded via the HuggingFace Hub API (requires the onnx or mlx feature for the hf-hub dependency). Subsequent calls return the cached path immediately.

§Example

ⓘ
let registry = LocalModelRegistry::default();
let path = registry.get_or_download("onnx-community/whisper-base").await?;

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impl LocalModelRegistry

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pub fn new(cache_dir: impl Into<PathBuf>) -> LocalModelRegistry

Create a registry with a custom cache directory.

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pub async fn get_or_download( &self, model_id: &str, ) -> Result<PathBuf, AudioError>

Get the local path for a model, downloading from HuggingFace Hub if not cached.

The method first checks for a local cache directory at <cache_dir>/<org>--<model>. If found, it returns immediately. Otherwise it uses the hf-hub crate to download all repository files into the HuggingFace cache and returns that path.

§Errors

Returns AudioError::ModelDownload if model_id is empty or the download fails.

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pub fn cache_dir(&self) -> &PathBuf

Get the cache directory path.

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pub fn model_path(&self, model_id: &str) -> PathBuf

Compute the local path for a model ID (without downloading).

Trait Implementations§

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impl Default for LocalModelRegistry

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fn default() -> LocalModelRegistry

Returns the “default value” for a type. Read more

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