Trait DependencyMetadataProvider 

pub trait DependencyMetadataProvider: Send + Sync {
    // Required method
    fn fetch_metadata(
        &self,
        requested_names: &[String],
        timeout: Duration,
    ) -> Vec<DependencyMetadataResponse>;
}

What: Fetch verified raw .SRCINFO metadata for graph-resolution requests.

Inputs:

• A lexically sorted batch of requested package or virtual names.
• A per-batch timeout supplied by DependencyGraphConfig.

Output:

• Returns one DependencyMetadataResponse per request whenever possible.

Details:

• The trait belongs to deps and has no AUR, HTTP, runtime, or helper dependency. Providers may batch internally and must honor the supplied timeout for cancellable I/O. The synchronous resolver issues batches serially, so it never has more than one provider call in flight.

Required Methods

fn fetch_metadata( &self, requested_names: &[String], timeout: Duration, ) -> Vec<DependencyMetadataResponse>

What: Retrieve raw metadata for a bounded batch of requested names.

Inputs:

• requested_names: Lexically sorted, unique requested package or virtual names.
• timeout: Maximum time allocated to this provider batch.

Output:

• Returns found, missing, or failed metadata responses.

Details:

• Providers should return a response for every input. The resolver records a structured protocol diagnostic for omitted, duplicate, or unrequested responses.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors