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referrer.go
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referrer.go
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//
// Copyright 2023 The Chainloop 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 schema
import (
"time"
"entgo.io/ent"
"entgo.io/ent/dialect/entsql"
"entgo.io/ent/schema/edge"
"entgo.io/ent/schema/field"
"entgo.io/ent/schema/index"
"github.com/google/uuid"
)
type Referrer struct {
ent.Schema
}
func (Referrer) Fields() []ent.Field {
return []ent.Field{
field.UUID("id", uuid.UUID{}).Default(uuid.New).Unique(),
field.String("digest").Immutable(),
// referrer kind i.e CONTAINER
field.String("kind").Immutable(),
// wether it can be downloaded from CAS or not
field.Bool("downloadable").Immutable(),
field.Time("created_at").
Default(time.Now).
Immutable().
Annotations(&entsql.Annotation{Default: "CURRENT_TIMESTAMP"}),
field.JSON("metadata", map[string]string{}).Optional().Immutable(),
field.JSON("annotations", map[string]string{}).Optional().Immutable(),
}
}
func (Referrer) Edges() []ent.Edge {
return []ent.Edge{
// M2M referrer can refer to itself via references
edge.To("references", Referrer.Type).From("referred_by").Immutable(),
// M2M. referrer can be part of multiple workflows
edge.To("workflows", Workflow.Type).Annotations(entsql.Annotation{OnDelete: entsql.Cascade}),
}
}
func (Referrer) Indexes() []ent.Index {
return []ent.Index{
// Two referrers of different kinds can have the same digest
// For now we only guarantee that the digest is unique in the scope of the referrer kind
index.Fields("digest", "kind").Unique(),
}
}