|
| 1 | +package committer |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "time" |
| 6 | + |
| 7 | + "github.com/rs/zerolog/log" |
| 8 | + config "github.com/thirdweb-dev/indexer/configs" |
| 9 | + "github.com/thirdweb-dev/indexer/internal/libs" |
| 10 | + "github.com/thirdweb-dev/indexer/internal/libs/libblockdata" |
| 11 | + "github.com/thirdweb-dev/indexer/internal/metrics" |
| 12 | +) |
| 13 | + |
| 14 | +func InitReorg() { |
| 15 | + libs.InitRedis() |
| 16 | +} |
| 17 | + |
| 18 | +func RunReorgValidator() { |
| 19 | + lastBlockCheck := int64(0) |
| 20 | + for { |
| 21 | + startBlock, endBlock, err := getReorgRange() |
| 22 | + if err != nil { |
| 23 | + log.Error().Err(err).Msg("Failed to get reorg range") |
| 24 | + time.Sleep(2 * time.Second) |
| 25 | + continue |
| 26 | + } |
| 27 | + |
| 28 | + if endBlock == lastBlockCheck || endBlock-startBlock < 5 { |
| 29 | + log.Debug().Msg("Not enough new blocks to check. Sleeping for 1 minute.") |
| 30 | + time.Sleep(1 * time.Minute) |
| 31 | + continue |
| 32 | + } |
| 33 | + |
| 34 | + // Detect reorgs and handle them |
| 35 | + err = detectAndHandleReorgs(startBlock, endBlock) |
| 36 | + if err != nil { |
| 37 | + log.Error().Err(err).Msg("Failed to detect and handle reorgs") |
| 38 | + time.Sleep(2 * time.Second) |
| 39 | + continue |
| 40 | + } |
| 41 | + lastBlockCheck = endBlock |
| 42 | + } |
| 43 | +} |
| 44 | + |
| 45 | +func getReorgRange() (int64, int64, error) { |
| 46 | + lastValidBlock, err := getLastValidBlock() |
| 47 | + if err != nil { |
| 48 | + return 0, 0, fmt.Errorf("failed to get last valid block: %w", err) |
| 49 | + } |
| 50 | + |
| 51 | + startBlock := max(lastValidBlock-1, 1) |
| 52 | + endBlock, err := libs.GetMaxBlockNumberFromClickHouseV2(libs.ChainId) |
| 53 | + if err != nil { |
| 54 | + return 0, 0, fmt.Errorf("failed to get max block number: %w", err) |
| 55 | + } |
| 56 | + |
| 57 | + endBlock = min(endBlock-5, startBlock+100) // lag by some blocks for safety |
| 58 | + |
| 59 | + if startBlock >= endBlock { |
| 60 | + return 0, 0, fmt.Errorf("start block is greater than end block") |
| 61 | + } |
| 62 | + |
| 63 | + return startBlock, endBlock, nil |
| 64 | +} |
| 65 | + |
| 66 | +func getLastValidBlock() (int64, error) { |
| 67 | + // Try to get last reorg checked block number |
| 68 | + lastReorgBlock, err := libs.GetReorgLastValidBlock(libs.ChainIdStr) |
| 69 | + if err != nil { |
| 70 | + return 0, fmt.Errorf("failed to get last reorg checked block: %w", err) |
| 71 | + } |
| 72 | + |
| 73 | + if lastReorgBlock > 0 { |
| 74 | + return lastReorgBlock, nil |
| 75 | + } |
| 76 | + |
| 77 | + // get block number 1 day ago |
| 78 | + lastValidBlock, err := libs.GetBlockNumberFromClickHouseV2DaysAgo(libs.ChainId, 1) |
| 79 | + if err != nil { |
| 80 | + return 0, fmt.Errorf("failed to get block number 1 day ago: %w", err) |
| 81 | + } |
| 82 | + |
| 83 | + return lastValidBlock, nil |
| 84 | +} |
| 85 | + |
| 86 | +func detectAndHandleReorgs(startBlock int64, endBlock int64) error { |
| 87 | + log.Debug().Msgf("Checking for reorgs from block %d to %d", startBlock, endBlock) |
| 88 | + |
| 89 | + // Fetch block headers for the range |
| 90 | + blockHeaders, err := libs.GetBlockHeadersForReorgCheck(libs.ChainId.Uint64(), uint64(startBlock), uint64(endBlock)) |
| 91 | + if err != nil { |
| 92 | + return fmt.Errorf("detectAndHandleReorgs: failed to get block headers: %w", err) |
| 93 | + } |
| 94 | + |
| 95 | + if len(blockHeaders) == 0 { |
| 96 | + log.Debug().Msg("detectAndHandleReorgs: No block headers found in range") |
| 97 | + return nil |
| 98 | + } |
| 99 | + |
| 100 | + // finding the reorg start and end block |
| 101 | + reorgStartBlock := int64(-1) |
| 102 | + reorgEndBlock := int64(-1) |
| 103 | + for i := 1; i < len(blockHeaders); i++ { |
| 104 | + if blockHeaders[i].Number.Int64() != blockHeaders[i-1].Number.Int64()+1 { |
| 105 | + // non-sequential block numbers |
| 106 | + reorgStartBlock = blockHeaders[i-1].Number.Int64() |
| 107 | + reorgEndBlock = blockHeaders[i].Number.Int64() |
| 108 | + break |
| 109 | + } |
| 110 | + if blockHeaders[i].ParentHash != blockHeaders[i-1].Hash { |
| 111 | + // hash mismatch start |
| 112 | + if reorgStartBlock == -1 { |
| 113 | + reorgStartBlock = blockHeaders[i-1].Number.Int64() |
| 114 | + } |
| 115 | + continue |
| 116 | + } else { |
| 117 | + // hash matches end |
| 118 | + if reorgStartBlock != -1 { |
| 119 | + reorgEndBlock = blockHeaders[i].Number.Int64() |
| 120 | + break |
| 121 | + } |
| 122 | + } |
| 123 | + } |
| 124 | + |
| 125 | + // set end to the last block if not set |
| 126 | + if reorgEndBlock == -1 { |
| 127 | + reorgEndBlock = blockHeaders[len(blockHeaders)-1].Number.Int64() |
| 128 | + } |
| 129 | + |
| 130 | + if reorgStartBlock > -1 { |
| 131 | + if err := handleReorgForRange(uint64(reorgStartBlock), uint64(reorgEndBlock)); err != nil { |
| 132 | + return err |
| 133 | + } |
| 134 | + } |
| 135 | + |
| 136 | + // update last valid block. if there was no reorg, this will update to the last block |
| 137 | + libs.SetReorgLastValidBlock(libs.ChainIdStr, reorgEndBlock) |
| 138 | + |
| 139 | + return nil |
| 140 | +} |
| 141 | + |
| 142 | +func handleReorgForRange(startBlock uint64, endBlock uint64) error { |
| 143 | + // nothing to do |
| 144 | + if startBlock == 0 { |
| 145 | + return nil |
| 146 | + } |
| 147 | + |
| 148 | + // will panic if any block is invalid |
| 149 | + newblockDataArray := libblockdata.GetValidBlockDataInBatch(endBlock, startBlock) |
| 150 | + expectedBlockNumber := startBlock |
| 151 | + for i, blockData := range newblockDataArray { |
| 152 | + if blockData.Block.Number.Uint64() != expectedBlockNumber { |
| 153 | + log.Error(). |
| 154 | + Int("index", i). |
| 155 | + Uint64("expected_block", expectedBlockNumber). |
| 156 | + Uint64("actual_block", blockData.Block.Number.Uint64()). |
| 157 | + Msg("Reorg: Block sequence mismatch - missing or out of order block") |
| 158 | + |
| 159 | + return fmt.Errorf("reorg: block sequence mismatch - missing or out of order block") |
| 160 | + } |
| 161 | + expectedBlockNumber++ |
| 162 | + } |
| 163 | + |
| 164 | + oldblockDataArray, err := libs.GetBlockDataFromClickHouseV2(libs.ChainId.Uint64(), startBlock, endBlock) |
| 165 | + if err != nil { |
| 166 | + return fmt.Errorf("handleReorgForRange: failed to get old block data: %w", err) |
| 167 | + } |
| 168 | + |
| 169 | + if err := libs.KafkaPublisherV2.PublishBlockDataReorg(newblockDataArray, oldblockDataArray); err != nil { |
| 170 | + log.Error(). |
| 171 | + Err(err). |
| 172 | + Int("blocks_count", len(newblockDataArray)). |
| 173 | + Msg("Reorg: Failed to publish blocks to Kafka") |
| 174 | + return fmt.Errorf("reorg: failed to publish blocks to kafka") |
| 175 | + } |
| 176 | + |
| 177 | + for _, blockData := range newblockDataArray { |
| 178 | + metrics.CommitterLastPublishedReorgBlockNumber.WithLabelValues(config.Cfg.ZeetProjectName, libs.ChainIdStr).Set(float64(blockData.Block.Number.Uint64())) |
| 179 | + } |
| 180 | + |
| 181 | + return nil |
| 182 | +} |
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