{"record":{"id":"bb9ca7f6975f1c3c","repo":"nautechsystems/nautilus_trader","slug":"failed-to-sync-pool-events-e","errorCode":null,"errorMessage":"Failed to sync pool events: {e}","messagePattern":"Failed to sync pool events: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/cli/src/blockchain/analyze.rs","lineNumber":308,"sourceCode":"        )]);\n    }\n\n    let last_checkpoint = checkpoints.last().copied().unwrap_or(first_checkpoint);\n\n    if !snapshot_from_rpc {\n        // Sync once up to the final checkpoint, honoring reset/from_block. Each checkpoint then\n        // bootstraps incrementally from the previous checkpoint's snapshot, so one pass produces\n        // every snapshot.\n        data_client\n            .sync_pool_events(\n                &dex_type,\n                pool_identifier,\n                from_block,\n                Some(last_checkpoint),\n                reset,\n            )\n            .await\n            .map_err(|e| anyhow::anyhow!(\"Failed to sync pool events: {e}\"))?;\n    }\n\n    let pool = data_client\n        .cache\n        .get_pool(&pool_identifier)\n        .ok_or_else(|| anyhow::anyhow!(\"Pool {pool_identifier} not found in cache\"))?\n        .clone();\n\n    let mut outcomes = Vec::with_capacity(checkpoints.len());\n    let mut rpc_profiler = None;\n\n    for checkpoint in checkpoints {\n        log::info!(\"Profiling pool {pool_identifier} to checkpoint block {checkpoint}\");\n        let (profiler, already_valid) = bootstrap_profiler_for_checkpoint(\n            data_client,\n            &pool,\n            checkpoint,\n            snapshot_from_rpc,","sourceCodeStart":290,"sourceCodeEnd":326,"githubUrl":"https://github.com/nautechsystems/nautilus_trader/blob/18893faf8b356be3320add8de2f861b0b647cf06/crates/cli/src/blockchain/analyze.rs#L290-L326","documentation":"In `analyze_pool_with_client`, the event-sync step (`sync_pool_events` equivalent call on the data client) fetches on-chain pool events from `from_block` up to the last checkpoint. Any error from that sync is wrapped with this message, keeping the original cause text.","triggerScenarios":"Running pool analysis when the historical event sync fails — RPC timeouts/rate limits during large block ranges, `from_block` beyond the node's indexed history, corrupted checkpoint state, or network failure mid-sync.","commonSituations":"Free/public RPC endpoints rejecting deep `eth_getLogs` ranges; analyzing a pool over a huge block span without checkpoints; node pruning historic state.","solutions":["Read the inner error to distinguish transport vs. data issues.","Reduce the analyzed block range or supply more granular `--checkpoint-blocks`.","Use an archive/full node that covers `from_block` and allows large `eth_getLogs`.","Retry with backoff; the sync supports resuming from the last checkpoint on re-run."],"exampleFix":"// before\nnautilus blockchain analyze-pool ... --from-block 0\n// after: start from deployment block or a closer checkpoint\nnautilus blockchain analyze-pool ... --from-block 12345678 --checkpoint-blocks 12500000,13000000","handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"loop {\n    match sync_pool_events(...).await {\n        Ok(_) => break,\n        Err(e) if is_rate_limit_or_timeout(&e) => { backoff().await; continue; }\n        Err(e) => return Err(anyhow::anyhow!(\"Failed to sync pool events: {e}\")),\n    }\n}","preventionTips":["Split large ranges with checkpoint blocks.","Use an archive node supporting deep eth_getLogs.","Add exponential backoff for transport errors."],"tags":["blockchain","rpc","sync","network"],"backgroundTag":"http-request-failed","analyzedSha":"18893faf8b356be3320add8de2f861b0b647cf06","analyzedAt":"2026-09-08T20:49:34.690Z","contentChangedAt":"2026-09-08T20:49:34.690Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}