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local.go
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local.go
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package buildkitskipper
import (
"context"
"crypto/sha1"
"fmt"
"time"
bolt "go.etcd.io/bbolt"
)
var errInvalidHash = fmt.Errorf("invalid sha1 hash")
func NewLocal(path string) (*LocalBuildkitSkipper, error) {
db, err := bolt.Open(path, 0600, nil)
if err != nil {
return nil, fmt.Errorf("could not open db, %w", err)
}
err = db.Update(func(tx *bolt.Tx) error {
_, err := tx.CreateBucketIfNotExists([]byte("builds"))
if err != nil {
return fmt.Errorf("could not create builds bucket: %w", err)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("failed to update database, %w", err)
}
return &LocalBuildkitSkipper{
db: db,
}, nil
}
type LocalBuildkitSkipper struct {
db *bolt.DB
}
func (lbks *LocalBuildkitSkipper) Add(ctx context.Context, data []byte) error {
if len(data) != sha1.Size {
return errInvalidHash
}
return lbks.db.Update(func(tx *bolt.Tx) error {
payload := []byte(time.Now().String()) // could be serialized into a structure; however LocalBuildkitSkipper is only meant for dev/testing
err := tx.Bucket([]byte("builds")).Put(data, payload)
if err != nil {
return fmt.Errorf("could not set config: %w", err)
}
return nil
})
}
func (lbks *LocalBuildkitSkipper) Exists(ctx context.Context, data []byte) (bool, error) {
if len(data) != sha1.Size {
return false, errInvalidHash
}
var found bool
err := lbks.db.View(func(tx *bolt.Tx) error {
payload := tx.Bucket([]byte("builds")).Get(data)
if payload != nil {
found = true
}
return nil
})
if err != nil {
return false, err
}
return found, nil
}