52 lines
1.7 KiB
Go
52 lines
1.7 KiB
Go
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// VulcanizeDB
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// Copyright © 2020 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 validator
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import (
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"github.com/ipfs/go-cid"
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"github.com/ipfs/go-ipfs-blockstore"
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"github.com/ipfs/go-ipfs-ds-help"
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"github.com/jmoiron/sqlx"
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)
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// PublishRaw derives a cid from raw bytes and provided codec and multihash type, and writes it to the db tx
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func PublishRaw(tx *sqlx.Tx, codec, mh uint64, raw []byte) (string, error) {
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c, err := RawdataToCid(codec, raw, mh)
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if err != nil {
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return "", err
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}
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dbKey := dshelp.MultihashToDsKey(c.Hash())
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prefixedKey := blockstore.BlockPrefix.String() + dbKey.String()
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_, err = tx.Exec(`INSERT INTO public.blocks (key, data) VALUES ($1, $2) ON CONFLICT (key) DO NOTHING`, prefixedKey, raw)
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return c.String(), err
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}
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// RawdataToCid takes the desired codec, multihash type, and a slice of bytes
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// and returns the proper cid of the object.
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func RawdataToCid(codec uint64, rawdata []byte, multiHash uint64) (cid.Cid, error) {
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c, err := cid.Prefix{
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Codec: codec,
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Version: 1,
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MhType: multiHash,
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MhLength: -1,
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}.Sum(rawdata)
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if err != nil {
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return cid.Cid{}, err
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}
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return c, nil
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}
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