-
Notifications
You must be signed in to change notification settings - Fork 136
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Handle duplicates in subjects and materials consistently (#926)
Fixes #925 Prior, deduplication handling for subjects and materials is different. Now, we use consistent approach to handle the deduplication. Signed-off-by: Chuang Wang <[email protected]>
- Loading branch information
Showing
5 changed files
with
473 additions
and
232 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| /* | ||
| Copyright 2023 The Tekton Authors | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
| package artifact | ||
|
|
||
| import ( | ||
| intoto "github.com/in-toto/in-toto-golang/in_toto" | ||
| "github.com/in-toto/in-toto-golang/in_toto/slsa_provenance/common" | ||
| ) | ||
|
|
||
| // AppendSubjects adds new subject(s) to the original slice. | ||
| // It merges the new item with an existing entry if they are duplicate instead of append. | ||
| func AppendSubjects(original []intoto.Subject, items ...intoto.Subject) []intoto.Subject { | ||
| var artifacts []artifact | ||
| for _, s := range original { | ||
| artifacts = append(artifacts, subjectToArtifact(s)) | ||
| } | ||
|
|
||
| for _, s := range items { | ||
| artifacts = addArtifact(artifacts, subjectToArtifact(s)) | ||
| } | ||
|
|
||
| var result []intoto.Subject | ||
| for _, a := range artifacts { | ||
| result = append(result, artifactToSubject(a)) | ||
| } | ||
| return result | ||
| } | ||
|
|
||
| // AppendMaterials adds new material(s) to the original slice. | ||
| // It merges the new item with an existing entry if they are duplicate instead of append. | ||
| func AppendMaterials(original []common.ProvenanceMaterial, items ...common.ProvenanceMaterial) []common.ProvenanceMaterial { | ||
| var artifacts []artifact | ||
| for _, m := range original { | ||
| artifacts = append(artifacts, materialToArtifact(m)) | ||
| } | ||
|
|
||
| for _, m := range items { | ||
| artifacts = addArtifact(artifacts, materialToArtifact(m)) | ||
| } | ||
|
|
||
| var result []common.ProvenanceMaterial | ||
| for _, a := range artifacts { | ||
| result = append(result, artifactToMaterial(a)) | ||
| } | ||
| return result | ||
| } | ||
|
|
||
| type artifact struct { | ||
| name string | ||
| digestSet map[string]string | ||
| } | ||
|
|
||
| // AddArtifact adds a new artifact item to the original slice. | ||
| func addArtifact(original []artifact, item artifact) []artifact { | ||
|
|
||
| for i, a := range original { | ||
| // if there is an equivalent entry in the original slice, merge the | ||
| // artifact's DigestSet into the existing entry's DigestSet. | ||
| if artifactEqual(a, item) { | ||
| mergeMaps(original[i].digestSet, item.digestSet) | ||
| return original | ||
| } | ||
| } | ||
|
|
||
| original = append(original, item) | ||
| return original | ||
| } | ||
|
|
||
| // two artifacts are equal if and only if they have same name and have at least | ||
| // one common algorithm and hex value. | ||
| func artifactEqual(x, y artifact) bool { | ||
| if x.name != y.name { | ||
| return false | ||
| } | ||
| for algo, hex := range x.digestSet { | ||
| if y.digestSet[algo] == hex { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| func mergeMaps(m1 map[string]string, m2 map[string]string) { | ||
| for k, v := range m2 { | ||
| m1[k] = v | ||
| } | ||
| } | ||
|
|
||
| func subjectToArtifact(s intoto.Subject) artifact { | ||
| return artifact{ | ||
| name: s.Name, | ||
| digestSet: s.Digest, | ||
| } | ||
| } | ||
|
|
||
| func artifactToSubject(a artifact) intoto.Subject { | ||
| return intoto.Subject{ | ||
| Name: a.name, | ||
| Digest: a.digestSet, | ||
| } | ||
| } | ||
|
|
||
| func materialToArtifact(m common.ProvenanceMaterial) artifact { | ||
| return artifact{ | ||
| name: m.URI, | ||
| digestSet: m.Digest, | ||
| } | ||
| } | ||
|
|
||
| func artifactToMaterial(a artifact) common.ProvenanceMaterial { | ||
| return common.ProvenanceMaterial{ | ||
| URI: a.name, | ||
| Digest: a.digestSet, | ||
| } | ||
| } |
Oops, something went wrong.