Roy Crihfield
ebc2eb37e7
* refactor packages, flags, subscriptions * DRY refactor builder tests * use mockgen to generate mocks * update README * MODE=statediff no longer needed for unit tests * simplify func names, clean up metrics * move write params to service field * sql indexer: confirm quit after ipld cache reset prevents negative waitgroup panic * don't let TotalDifficulty become nil * use forked plugeth, plugeth-utils for now
128 lines
3.5 KiB
Go
128 lines
3.5 KiB
Go
// VulcanizeDB
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// Copyright © 2021 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 sql
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import (
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"context"
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"sync"
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"sync/atomic"
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"github.com/lib/pq"
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"github.com/cerc-io/plugeth-statediff/indexer/ipld"
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"github.com/cerc-io/plugeth-statediff/indexer/models"
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"github.com/cerc-io/plugeth-statediff/utils/log"
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)
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const startingCacheCapacity = 1024 * 24
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// BatchTx wraps a sql tx with the state necessary for building the tx concurrently during trie difference iteration
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type BatchTx struct {
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BlockNumber string
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ctx context.Context
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dbtx Tx
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stm string
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quit chan (chan<- struct{})
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iplds chan models.IPLDModel
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ipldCache models.IPLDBatch
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removedCacheFlag *uint32
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// Tracks expected cache size and ensures cache is caught up before flush
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cacheWg sync.WaitGroup
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submit func(blockTx *BatchTx, err error) error
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}
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// Submit satisfies indexer.AtomicTx
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func (tx *BatchTx) Submit(err error) error {
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return tx.submit(tx, err)
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}
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func (tx *BatchTx) flush() error {
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tx.cacheWg.Wait()
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_, err := tx.dbtx.Exec(tx.ctx, tx.stm, pq.Array(tx.ipldCache.BlockNumbers), pq.Array(tx.ipldCache.Keys),
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pq.Array(tx.ipldCache.Values))
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if err != nil {
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log.Debug(insertError{"ipld.blocks", err, tx.stm,
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struct {
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blockNumbers []string
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keys []string
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values [][]byte
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}{
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tx.ipldCache.BlockNumbers,
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tx.ipldCache.Keys,
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tx.ipldCache.Values,
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}}.Error())
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return insertError{"ipld.blocks", err, tx.stm, "too many arguments; use debug mode for full list"}
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}
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tx.ipldCache = models.IPLDBatch{}
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return nil
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}
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// run in background goroutine to synchronize concurrent appends to the ipldCache
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func (tx *BatchTx) cache() {
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for {
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select {
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case i := <-tx.iplds:
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tx.ipldCache.BlockNumbers = append(tx.ipldCache.BlockNumbers, i.BlockNumber)
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tx.ipldCache.Keys = append(tx.ipldCache.Keys, i.Key)
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tx.ipldCache.Values = append(tx.ipldCache.Values, i.Data)
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tx.cacheWg.Done()
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case confirm := <-tx.quit:
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tx.ipldCache = models.IPLDBatch{}
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confirm <- struct{}{}
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return
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}
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}
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}
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func (tx *BatchTx) cacheDirect(key string, value []byte) {
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tx.cacheWg.Add(1)
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tx.iplds <- models.IPLDModel{
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BlockNumber: tx.BlockNumber,
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Key: key,
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Data: value,
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}
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}
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func (tx *BatchTx) cacheIPLD(i ipld.IPLD) {
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tx.cacheWg.Add(1)
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tx.iplds <- models.IPLDModel{
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BlockNumber: tx.BlockNumber,
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Key: i.Cid().String(),
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Data: i.RawData(),
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}
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}
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func (tx *BatchTx) cacheRemoved(key string, value []byte) {
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if atomic.LoadUint32(tx.removedCacheFlag) == 0 {
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atomic.StoreUint32(tx.removedCacheFlag, 1)
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tx.cacheWg.Add(1)
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tx.iplds <- models.IPLDModel{
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BlockNumber: tx.BlockNumber,
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Key: key,
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Data: value,
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}
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}
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}
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// rollback sql transaction and log any error
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func rollback(ctx context.Context, tx Tx) {
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if err := tx.Rollback(ctx); err != nil {
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log.Error("error during rollback", "error", err)
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}
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}
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