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boltdb.go
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boltdb.go
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// Copyright (c) 2020 BitMaelum Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package routing
import (
"encoding/json"
"time"
"github.com/bitmaelum/key-resolver-go/internal"
bolt "go.etcd.io/bbolt"
)
type boltResolver struct {
client *bolt.DB
bucketName string
}
// NewBoltResolver returns a new resolver based on BoltDB
func NewBoltResolver() Repository {
return &boltResolver{
client: internal.GetBoltDb(),
bucketName: "routing",
}
}
func (b boltResolver) Get(hash string) (*ResolveInfoType, error) {
rec := &ResolveInfoType{}
err := b.client.View(func(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte(b.bucketName))
if bucket == nil {
return ErrNotFound
}
data := bucket.Get([]byte(hash))
if data == nil {
return ErrNotFound
}
return json.Unmarshal(data, &rec)
})
if err != nil {
return nil, err
}
return rec, nil
}
func (b boltResolver) Create(hash, routing, publicKey string) (bool, error) {
err := b.client.Update(func(tx *bolt.Tx) error {
bucket, err := tx.CreateBucketIfNotExists([]byte(b.bucketName))
if err != nil {
return err
}
rec := &ResolveInfoType{
Hash: hash,
Routing: routing,
PubKey: publicKey,
Serial: uint64(time.Now().UnixNano()),
}
buf, err := json.Marshal(rec)
if err != nil {
return err
}
return bucket.Put([]byte(hash), buf)
})
if err != nil {
return false, err
}
return true, nil
}
func (b boltResolver) Update(info *ResolveInfoType, routing, publicKey string) (bool, error) {
return b.Create(info.Hash, routing, publicKey)
}
func (b boltResolver) Delete(hash string) (bool, error) {
err := b.client.Update(func(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte(b.bucketName))
if bucket == nil {
return nil
}
return bucket.Delete([]byte(hash))
})
if err != nil {
return false, err
}
return true, nil
}