28cd4b1a2f
Convenience function, moves all code converting from a PathInfo struct to to go-nix's NarInfo. Change-Id: Idf0dcc38675674563f2dfd3286a4a55fa2a24a82 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9593 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: Brian McGee <brian@bmcgee.ie>
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
package http
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import (
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"fmt"
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storev1pb "code.tvl.fyi/tvix/store/protos"
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nixhash "github.com/nix-community/go-nix/pkg/hash"
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"github.com/nix-community/go-nix/pkg/narinfo"
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"github.com/nix-community/go-nix/pkg/narinfo/signature"
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"github.com/nix-community/go-nix/pkg/nixbase32"
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)
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// ToNixNarInfo converts the PathInfo to a narinfo.NarInfo.
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func ToNixNarInfo(p *storev1pb.PathInfo) (*narinfo.NarInfo, error) {
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// ensure the PathInfo is valid, and extract the StorePath from the node in
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// there.
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storePath, err := p.Validate()
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if err != nil {
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return nil, fmt.Errorf("failed to validate PathInfo: %w", err)
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}
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// convert the signatures from storev1pb signatures to narinfo signatures
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narinfoSignatures := make([]signature.Signature, len(p.GetNarinfo().GetSignatures()))
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for i, pathInfoSignature := range p.GetNarinfo().GetSignatures() {
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narinfoSignatures[i] = signature.Signature{
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Name: pathInfoSignature.GetName(),
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Data: pathInfoSignature.GetData(),
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}
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}
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// produce nixhash for the narsha256.
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narHash, err := nixhash.FromHashTypeAndDigest(
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0x12, // SHA2_256
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p.GetNarinfo().GetNarSha256(),
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)
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if err != nil {
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return nil, fmt.Errorf("invalid narsha256: %w", err)
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}
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return &narinfo.NarInfo{
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StorePath: storePath.Absolute(),
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URL: "nar/" + nixbase32.EncodeToString(narHash.Digest()) + ".nar",
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Compression: "none",
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NarHash: narHash,
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NarSize: uint64(p.GetNarinfo().GetNarSize()),
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References: p.GetNarinfo().GetReferenceNames(),
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Signatures: narinfoSignatures,
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}, nil
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}
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