65c489c920
Fixed several issues, and ran a basic test on ironsmith itself. Need to prevent subsequent builds on same versions
111 lines
2.4 KiB
Go
111 lines
2.4 KiB
Go
// Copyright 2016 Tim Shannon. All rights reserved.
|
|
// Use of this source code is governed by the MIT license
|
|
// that can be found in the LICENSE file.
|
|
|
|
// Package datastore manages the bolt data files and the reading and writing data to them
|
|
package datastore
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"errors"
|
|
"io"
|
|
"time"
|
|
|
|
"github.com/boltdb/bolt"
|
|
)
|
|
|
|
// ErrNotFound is the error returned when a value cannot be found in the store for the given key
|
|
var ErrNotFound = errors.New("Value not found")
|
|
|
|
// Store is a datastore for getting and setting data for a given ironsmith project
|
|
// run on top of a Bolt DB file
|
|
type Store struct {
|
|
bolt *bolt.DB
|
|
}
|
|
|
|
// Open opens an existing datastore file, or creates a new one
|
|
// caller is responsible for closing the datastore
|
|
func Open(filename string) (*Store, error) {
|
|
db, err := bolt.Open(filename, 0666, &bolt.Options{Timeout: 1 * time.Minute})
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
store := &Store{
|
|
bolt: db,
|
|
}
|
|
|
|
err = store.bolt.Update(func(tx *bolt.Tx) error {
|
|
_, err := tx.CreateBucketIfNotExists([]byte(bucketLog))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = tx.CreateBucketIfNotExists([]byte(bucketReleases))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = tx.CreateBucketIfNotExists([]byte(bucketFiles))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
})
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return store, nil
|
|
}
|
|
|
|
// Close closes the bolt datastore
|
|
func (ds *Store) Close() error {
|
|
return ds.bolt.Close()
|
|
}
|
|
|
|
func (ds *Store) get(bucket string, key TimeKey, result interface{}) error {
|
|
return ds.bolt.View(func(tx *bolt.Tx) error {
|
|
dsValue := tx.Bucket([]byte(bucket)).Get(key.Bytes())
|
|
|
|
if dsValue == nil {
|
|
return ErrNotFound
|
|
}
|
|
|
|
if value, ok := result.([]byte); ok {
|
|
buff := bytes.NewBuffer(value)
|
|
_, err := io.Copy(buff, bytes.NewReader(dsValue))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
return json.Unmarshal(dsValue, result)
|
|
})
|
|
}
|
|
|
|
func (ds *Store) put(bucket string, key TimeKey, value interface{}) error {
|
|
var err error
|
|
dsValue, ok := value.([]byte)
|
|
if !ok {
|
|
dsValue, err = json.Marshal(value)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return ds.bolt.Update(func(tx *bolt.Tx) error {
|
|
return tx.Bucket([]byte(bucket)).Put(key.Bytes(), dsValue)
|
|
})
|
|
}
|
|
|
|
func (ds *Store) delete(bucket string, key TimeKey) error {
|
|
return ds.bolt.Update(func(tx *bolt.Tx) error {
|
|
return tx.Bucket([]byte(bucket)).Delete(key.Bytes())
|
|
})
|
|
}
|