91 lines
2.0 KiB
Go
91 lines
2.0 KiB
Go
package memory
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import (
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"encoding/hex"
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"fmt"
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"github.com/Secured-Finance/dione/blockchain/database"
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types2 "github.com/Secured-Finance/dione/blockchain/types"
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"github.com/patrickmn/go-cache"
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)
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const (
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LatestBlockHeightKey = "latest_block_height"
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)
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type Database struct {
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db *cache.Cache
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}
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func NewDatabase() *Database {
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return &Database{
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db: cache.New(cache.NoExpiration, 0),
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}
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}
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func (d *Database) StoreBlock(block *types2.Block) error {
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h := hex.EncodeToString(block.Header.Hash)
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d.db.SetDefault(h, block)
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d.db.SetDefault(fmt.Sprintf("height/%d", block.Header.Height), block)
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return nil
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}
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func (d *Database) HasBlock(blockHash []byte) (bool, error) {
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_, ok := d.db.Get(hex.EncodeToString(blockHash))
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return ok, nil
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}
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func (d *Database) FetchBlockData(blockHash []byte) ([]*types2.Transaction, error) {
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b, err := d.FetchBlock(blockHash)
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if err != nil {
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return nil, err
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}
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return b.Data, nil
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}
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func (d *Database) FetchBlockHeader(blockHash []byte) (*types2.BlockHeader, error) {
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b, err := d.FetchBlock(blockHash)
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if err != nil {
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return nil, err
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}
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return b.Header, nil
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}
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func (d *Database) FetchBlock(blockHash []byte) (*types2.Block, error) {
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b, ok := d.db.Get(hex.EncodeToString(blockHash))
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if !ok {
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return nil, database.ErrBlockNotFound
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}
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return b.(*types2.Block), nil
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}
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func (d *Database) FetchBlockByHeight(height uint64) (*types2.Block, error) {
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b, ok := d.db.Get(fmt.Sprintf("height/%d", height))
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if !ok {
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return nil, database.ErrBlockNotFound
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}
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return b.(*types2.Block), nil
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}
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func (d *Database) FetchBlockHeaderByHeight(height uint64) (*types2.BlockHeader, error) {
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b, ok := d.db.Get(fmt.Sprintf("height/%d", height))
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if !ok {
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return nil, database.ErrBlockNotFound
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}
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return b.(*types2.Block).Header, nil
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}
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func (d *Database) GetLatestBlockHeight() (uint64, error) {
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height, ok := d.db.Get(LatestBlockHeightKey)
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if !ok {
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return 0, database.ErrLatestHeightNil
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}
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return height.(uint64), nil
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}
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func (d *Database) SetLatestBlockHeight(height uint64) error {
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d.db.SetDefault(LatestBlockHeightKey, height)
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return nil
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}
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