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| // VulcanizeDB | ||
| // Copyright © 2021 Vulcanize | ||
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| // 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. | ||
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| // 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. | ||
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| // 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/>. | ||
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| package indexer | ||
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| import ( | ||
| blockstore "github.com/ipfs/go-ipfs-blockstore" | ||
| dshelp "github.com/ipfs/go-ipfs-ds-help" | ||
| node "github.com/ipfs/go-ipld-format" | ||
| "github.com/jmoiron/sqlx" | ||
| "github.com/lib/pq" | ||
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| "github.com/ethereum/go-ethereum/statediff/indexer/ipfs/ipld" | ||
| "github.com/ethereum/go-ethereum/statediff/indexer/models" | ||
| ) | ||
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| const ipldBatchInsertPgStr string = `INSERT INTO public.blocks (key, data) VALUES (unnest($1::TEXT[]), unnest($2::BYTEA[])) ON CONFLICT (key) DO NOTHING` | ||
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| // BlockTx wraps a Postgres tx with the state necessary for building the Postgres tx concurrently during trie difference iteration | ||
| type BlockTx struct { | ||
| dbtx *sqlx.Tx | ||
| BlockNumber uint64 | ||
| headerID int64 | ||
| Close func(blockTx *BlockTx, err error) error | ||
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| quit chan struct{} | ||
| iplds chan models.IPLDModel | ||
| ipldCache models.IPLDBatch | ||
| } | ||
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| func (tx *BlockTx) flush() error { | ||
| _, err := tx.dbtx.Exec(ipldBatchInsertPgStr, pq.Array(tx.ipldCache.Keys), pq.Array(tx.ipldCache.Values)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| tx.ipldCache = models.IPLDBatch{} | ||
| return nil | ||
| } | ||
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| // run in background goroutine to synchronize concurrent appends to the ipldCache | ||
| func (tx *BlockTx) cache() { | ||
| for { | ||
| select { | ||
| case i := <-tx.iplds: | ||
| tx.ipldCache.Keys = append(tx.ipldCache.Keys, i.Key) | ||
| tx.ipldCache.Values = append(tx.ipldCache.Values, i.Data) | ||
| case <-tx.quit: | ||
| return | ||
| } | ||
| } | ||
| } | ||
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| func (tx *BlockTx) cacheDirect(key string, value []byte) { | ||
| tx.iplds <- models.IPLDModel{ | ||
| Key: key, | ||
| Data: value, | ||
| } | ||
| } | ||
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| func (tx *BlockTx) cacheIPLD(i node.Node) { | ||
| tx.iplds <- models.IPLDModel{ | ||
| Key: blockstore.BlockPrefix.String() + dshelp.MultihashToDsKey(i.Cid().Hash()).String(), | ||
| Data: i.RawData(), | ||
| } | ||
| } | ||
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| func (tx *BlockTx) cacheRaw(codec, mh uint64, raw []byte) (string, string, error) { | ||
| c, err := ipld.RawdataToCid(codec, raw, mh) | ||
| if err != nil { | ||
| return "", "", err | ||
| } | ||
| prefixedKey := blockstore.BlockPrefix.String() + dshelp.MultihashToDsKey(c.Hash()).String() | ||
| tx.iplds <- models.IPLDModel{ | ||
| Key: prefixedKey, | ||
| Data: raw, | ||
| } | ||
| return c.String(), prefixedKey, err | ||
| } |
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