store.go

// Apla Software includes an integrated development
// environment with a multi-level system for the management
// of access rights to data, interfaces, and Smart contracts. The
// technical characteristics of the Apla Software are indicated in
// Apla Technical Paper.

// Apla Users are granted a permission to deal in the Apla
// Software without restrictions, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of Apla Software, and to permit persons
// to whom Apla Software is furnished to do so, subject to the
// following conditions:
// * the copyright notice of GenesisKernel and EGAAS S.A.
// and this permission notice shall be included in all copies or
// substantial portions of the software;
// * a result of the dealing in Apla Software cannot be
// implemented outside of the Apla Platform environment.

// THE APLA 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, ERROR FREE 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 APLA SOFTWARE.

package main

import (
	"github.com/google/logger"
	"github.com/recoilme/pudge"
)

const (
	lastId = `lastID`
)

var (
	store *pudge.Db
)

func StoreOpen() {
	var err error
	store, err = pudge.Open(cfg.StoreFile, &pudge.Config{
		StoreMode: 0})
	if err != nil {
		logger.Fatal(err)
	}
}

func StoreClose() {
	pudge.CloseAll()
}

// LastID Returns the last block id in the previous start
func LastID() int64 {
	var ret int64
	store.Get(lastId, &ret)
	return ret
}

func StoreBlock(block BlockInfo) {
	store.Set(block.ID, block.Hash)
	store.Set(lastId, block.ID)
}

func GetHash(id int64) []byte {
	var hash []byte
	err := store.Get(id, &hash)
	if err != nil {
		logger.Fatal(err)
	}
	return hash
}