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Strip unused SBOM fields to reduce object size by ~52% #720

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Strip unused SBOM fields to reduce object size by ~52% #720

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7000ebf
Strip unused SBOM fields to reduce object size by ~52%
slashben Feb 11, 2026
6a2649a
Fix: remove unused encoding/json import
slashben Feb 11, 2026
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18 changes: 7 additions & 11 deletions pkg/sbommanager/v1/sbom_manager.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@ package v1

import (
"context"
"encoding/json"
"errors"
"fmt"
"net"
Expand Down Expand Up @@ -566,7 +565,7 @@ func toLicenses(l []model.License) v1beta1.Licenses {
licenses[i].SPDXExpression = l[i].SPDXExpression
licenses[i].Type = v1beta1.LicenseType(l[i].Type)
licenses[i].URLs = l[i].URLs
licenses[i].Locations = toLocations(l[i].Locations)
// Locations stripped to reduce SBOM size (saves ~228 KB / 3.2%)
}
return licenses
}
Expand All @@ -575,9 +574,8 @@ func toLocations(l []file.Location) []v1beta1.Location {
locations := make([]v1beta1.Location, len(l))
for i := range l {
locations[i].Coordinates = v1beta1.Coordinates(l[i].Coordinates)
locations[i].VirtualPath = l[i].AccessPath
// VirtualPath (accessPath) and Annotations stripped to reduce SBOM size (saves ~159 KB / 2.2%)
locations[i].RealPath = l[i].RealPath
locations[i].Annotations = l[i].Annotations
}
return locations
}
Expand All @@ -587,8 +585,7 @@ func toSyftDocument(sbomSBOM *sbom.SBOM) v1beta1.SyftDocument {
Pretty: false,
Legacy: false,
})
configuration, _ := json.Marshal(doc.Descriptor.Configuration)
metadata, _ := json.Marshal(doc.Source.Metadata)
// Source.Metadata and Descriptor.Configuration stripped to reduce SBOM size (saves ~20 KB)
syftDocument := v1beta1.SyftDocument{
Artifacts: toSyftPackages(doc.Artifacts),
ArtifactRelationships: toSyftRelationships(doc.ArtifactRelationships),
Expand All @@ -598,7 +595,7 @@ func toSyftDocument(sbomSBOM *sbom.SBOM) v1beta1.SyftDocument {
Name: doc.Source.Name,
Version: doc.Source.Version,
Type: doc.Source.Type,
Metadata: metadata,
Metadata: nil,
},
Distro: v1beta1.LinuxRelease{
PrettyName: doc.Distro.PrettyName,
Expand All @@ -623,7 +620,7 @@ func toSyftDocument(sbomSBOM *sbom.SBOM) v1beta1.SyftDocument {
SyftDescriptor: v1beta1.SyftDescriptor{
Name: doc.Descriptor.Name,
Version: doc.Descriptor.Version,
Configuration: configuration,
Configuration: nil,
},
Schema: v1beta1.Schema{
Version: doc.Schema.Version,
Expand Down Expand Up @@ -651,14 +648,13 @@ func toSyftPackages(p []model.Package) []v1beta1.SyftPackage {
packages[i].Name = p[i].Name
packages[i].Version = p[i].Version
packages[i].Type = string(p[i].Type)
packages[i].FoundBy = p[i].FoundBy
// FoundBy stripped to reduce SBOM size (saves ~15 KB)
packages[i].Locations = toLocations(p[i].Locations)
packages[i].Licenses = toLicenses(p[i].Licenses)
packages[i].Language = string(p[i].Language)
packages[i].CPEs = toCPEs(p[i].CPEs)
packages[i].PURL = p[i].PURL
packages[i].Metadata, _ = json.Marshal(p[i].Metadata)
packages[i].MetadataType = p[i].MetadataType
// Metadata and MetadataType stripped to reduce SBOM size (saves ~3.19 MB / 46%)
}
return packages
}
Expand Down
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