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// Copyright 2019 clair 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 database
// Ancestry is a manifest that keeps all layers in an image in order.
type Ancestry struct {
// Name is a globally unique value for a set of layers. This is often the
// sha256 digest of an OCI/Docker manifest.
Name string `json:"name"`
// By contains the processors that are used when computing the
// content of this ancestry.
By []Detector `json:"by"`
// Layers should be ordered and i_th layer is the parent of i+1_th layer in
// the slice.
Layers []AncestryLayer `json:"layers"`
}
// Valid checks if the ancestry is compliant to spec.
func (a *Ancestry) Valid() bool {
if a == nil {
return false
}
if a.Name == "" {
return false
}
for _, d := range a.By {
if !d.Valid() {
return false
}
}
for _, l := range a.Layers {
if !l.Valid() {
return false
}
}
return true
}
// AncestryLayer is a layer with all detected namespaced features.
type AncestryLayer struct {
// Hash is the sha-256 tarsum on the layer's blob content.
Hash string `json:"hash"`
// Features are the features introduced by this layer when it was
// processed.
Features []AncestryFeature `json:"features"`
}
// Valid checks if the Ancestry Layer is compliant to the spec.
func (l *AncestryLayer) Valid() bool {
if l == nil {
return false
}
if l.Hash == "" {
return false
}
return true
}
// GetFeatures returns the Ancestry's features.
func (l *AncestryLayer) GetFeatures() []NamespacedFeature {
nsf := make([]NamespacedFeature, 0, len(l.Features))
for _, f := range l.Features {
nsf = append(nsf, f.NamespacedFeature)
}
return nsf
}
// AncestryFeature is a namespaced feature with the detectors used to
// find this feature.
type AncestryFeature struct {
NamespacedFeature `json:"namespacedFeature"`
// FeatureBy is the detector that detected the feature.
FeatureBy Detector `json:"featureBy"`
// NamespaceBy is the detector that detected the namespace.
NamespaceBy Detector `json:"namespaceBy"`
}
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