1 // 2 // Copyright 2023 The Sigstore Authors. 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 16 package remote 17 18 import ( 19 "github.com/google/go-containerregistry/pkg/name" 20 v1 "github.com/google/go-containerregistry/pkg/v1" 21 "github.com/google/go-containerregistry/pkg/v1/remote" 22 ) 23 24 // Referrers fetches references using registry options. 25 func Referrers(d name.Digest, artifactType string, opts ...Option) (*v1.IndexManifest, error) { 26 o := makeOptions(name.Repository{}, opts...) 27 rOpt := o.ROpt 28 rOpt = append(rOpt, remote.WithFilter("artifactType", artifactType)) 29 idx, err := remote.Referrers(d, rOpt...) 30 if err != nil { 31 return nil, err 32 } 33 return idx.IndexManifest() 34 } 35