Replace BadgerDB with bbolt

pkg/db/bolt/bolt.go

@@ -0,0 +1,60 @@
+package bolt
+
+import (
+	"fmt"
+
+	bolt "go.etcd.io/bbolt"
+)
+
+// Database is used to store and retrieve data from an underlying Bolt database.
+type Database struct {
+	bolt *bolt.DB
+}
+
+// OpenDatabase opens a new Bolt database.
+func OpenDatabase(path string, opts *bolt.Options) (*Database, error) {
+	db, err := bolt.Open(path, 0o600, opts)
+	if err != nil {
+		return nil, fmt.Errorf("bolt: failed to open database: %w", err)
+	}
+
+	return DatabaseFromBoltDB(db)
+}
+
+// Close closes the underlying Bolt database.
+func (db *Database) Close() error {
+	return db.bolt.Close()
+}
+
+// DatabaseFromBoltDB returns a Database with `db` set as the underlying Bolt
+// database.
+func DatabaseFromBoltDB(db *bolt.DB) (*Database, error) {
+	err := db.Update(func(tx *bolt.Tx) error {
+		_, err := tx.CreateBucketIfNotExists(projectsBucketName)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	})
+	if err != nil {
+		return nil, fmt.Errorf("bolt: failed to create projects bucket: %w", err)
+	}
+
+	return &Database{bolt: db}, nil
+}
+
+func createNestedBucket(tx *bolt.Tx, names ...[]byte) (b *bolt.Bucket, err error) {
+	for i, name := range names {
+		if b == nil {
+			b, err = tx.CreateBucketIfNotExists(name)
+		} else {
+			b, err = b.CreateBucketIfNotExists(name)
+		}
+		if err != nil {
+			return nil, fmt.Errorf("bolt: failed to create nested bucket %q: %w", names[:i+1], err)
+		}
+	}
+
+	return b, nil
+}