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fix(trusted-sync): start #380

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fix(trusted-sync): start #380

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13 changes: 11 additions & 2 deletions examples/trusted-sync/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -58,12 +58,21 @@ async fn sync(cli: cli::Cli) -> Result<()> {

let mut start =
cli.start_l2_block.filter(|n| *n >= cfg.genesis.l2.number).unwrap_or(cfg.genesis.l2.number);
debug!(target: LOG_TARGET, "Genesis L2 block number: {}", cfg.genesis.l2.number);

// If the start block from tip cli flag is specified, find the latest l2 block number
// and subtract the specified number of blocks to get the start block number.
if let Some(blocks) = cli.start_blocks_from_tip {
start = l2_provider.latest_block_number().await?.saturating_sub(blocks);
info!(target: LOG_TARGET, "Starting {} blocks from tip at L2 block number: {}", blocks, start);
let latest = l2_provider.latest_block_number().await?;
debug!(target: LOG_TARGET, "Fetched latest block number: {}", latest);
start = if latest < cfg.genesis.l2.number {
warn!(target: LOG_TARGET, "latest l2 block number prior to genesis. Reverting to genesis. ({} < {})", latest, cfg.genesis.l2.number);
cfg.genesis.l2.number
} else {
let sub_tip = latest.saturating_sub(blocks);
info!(target: LOG_TARGET, "Starting {} blocks from tip at L2 block number: {}", blocks, sub_tip);
sub_tip
};
}
metrics::START_L2_BLOCK.inc_by(start);
println!("Starting from L2 block number: {}", metrics::START_L2_BLOCK.get());
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