80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
// VulcanizeDB
|
|
// Copyright © 2019 Vulcanize
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package shared
|
|
|
|
import (
|
|
"github.com/cerc-io/ipld-eth-server/v4/pkg/log"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ipfs/go-cid"
|
|
blockstore "github.com/ipfs/go-ipfs-blockstore"
|
|
dshelp "github.com/ipfs/go-ipfs-ds-help"
|
|
"github.com/jmoiron/sqlx"
|
|
)
|
|
|
|
// HandleZeroAddrPointer will return an emtpy string for a nil address pointer
|
|
func HandleZeroAddrPointer(to *common.Address) string {
|
|
if to == nil {
|
|
return ""
|
|
}
|
|
return to.Hex()
|
|
}
|
|
|
|
// HandleZeroAddr will return an empty string for a 0 value address
|
|
func HandleZeroAddr(to common.Address) string {
|
|
if to.Hex() == "0x0000000000000000000000000000000000000000" {
|
|
return ""
|
|
}
|
|
return to.Hex()
|
|
}
|
|
|
|
// Rollback sql transaction and log any error
|
|
func Rollback(tx *sqlx.Tx) {
|
|
if err := tx.Rollback(); err != nil {
|
|
log.Error(err)
|
|
}
|
|
}
|
|
|
|
// FetchIPLDByMhKeyAndBlockNumber is used to retrieve an ipld from Postgres blockstore with the provided tx, mhkey string and blockNumber
|
|
func FetchIPLDByMhKeyAndBlockNumber(tx *sqlx.Tx, mhKey string, blockNumber uint64) ([]byte, error) {
|
|
pgStr := `SELECT data FROM ipld.blocks WHERE key = $1 AND block_number = $2`
|
|
var block []byte
|
|
return block, tx.Get(&block, pgStr, mhKey, blockNumber)
|
|
}
|
|
|
|
// FetchIPLD is used to retrieve an IPLD from Postgres mhkey and blockNumber
|
|
func FetchIPLD(db *sqlx.DB, mhKey string, blockNumber uint64) ([]byte, error) {
|
|
pgStr := `SELECT data FROM ipld.blocks WHERE key = $1 AND block_number = $2`
|
|
var block []byte
|
|
return block, db.Get(&block, pgStr, mhKey, blockNumber)
|
|
}
|
|
|
|
// MultihashKeyFromCID converts a cid into a blockstore-prefixed multihash db key string
|
|
func MultihashKeyFromCID(c cid.Cid) string {
|
|
dbKey := dshelp.MultihashToDsKey(c.Hash())
|
|
return blockstore.BlockPrefix.String() + dbKey.String()
|
|
}
|
|
|
|
// MultihashKeyFromCIDString converts a cid string into a blockstore-prefixed multihash db key string
|
|
func MultihashKeyFromCIDString(c string) (string, error) {
|
|
dc, err := cid.Decode(c)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
dbKey := dshelp.MultihashToDsKey(dc.Hash())
|
|
return blockstore.BlockPrefix.String() + dbKey.String(), nil
|
|
}
|