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