nautechsystems/nautilus_trader · error · anyhow::Error

Failed to insert into block table: {e}

Error message

Failed to insert into block table: {e}

What it means

This error wraps a sqlx failure when inserting a single block row into the chain's block partition. The INSERT binds many block fields (including optional L1 gas fields as strings/ints); any database-level failure — connection, constraint, partition missing, or column type mismatch — is wrapped here.

Source

Thrown at crates/adapters/blockchain/src/cache/database.rs:492

        )
        .bind(chain_id as i32)
        .bind(block.number as i64)
        .bind(block.hash.as_str())
        .bind(block.parent_hash.as_str())
        .bind(block.miner.as_str())
        .bind(block.gas_limit as i64)
        .bind(block.gas_used as i64)
        .bind(block.timestamp.to_string())
        .bind(block.base_fee_per_gas.as_ref().map(U256::to_string))
        .bind(block.blob_gas_used.as_ref().map(U256::to_string))
        .bind(block.excess_blob_gas.as_ref().map(U256::to_string))
        .bind(block.l1_gas_price.as_ref().map(U256::to_string))
        .bind(block.l1_gas_used.map(|v| v as i64))
        .bind(block.l1_fee_scalar.map(|v| v as i64))
        .execute(&self.pool)
        .await
        .map(|_| ())
        .map_err(|e| anyhow::anyhow!("Failed to insert into block table: {e}"))
    }

    /// Inserts multiple blocks in a single database operation using UNNEST for optimal performance.
    ///
    /// # Errors
    ///
    /// Returns an error if the database operation fails.
    pub async fn add_blocks_batch(&self, chain_id: u32, blocks: &[Block]) -> anyhow::Result<()> {
        if blocks.is_empty() {
            return Ok(());
        }

        // Prepare vectors for each column
        let mut numbers: Vec<i64> = Vec::with_capacity(blocks.len());
        let mut hashes: Vec<String> = Vec::with_capacity(blocks.len());
        let mut parent_hashes: Vec<String> = Vec::with_capacity(blocks.len());
        let mut miners: Vec<String> = Vec::with_capacity(blocks.len());
        let mut gas_limits: Vec<i64> = Vec::with_capacity(blocks.len());

View on GitHub (pinned to 18893faf8b)

Solutions

1. Check the wrapped {e} for the exact database error (constraint vs connection vs missing relation)
2. Ensure create_block_partition(chain) ran before inserting blocks
3. Verify the block table schema matches the bound field types, especially L1 gas columns
4. Use the bulk UNNEST insert path for batches and retry after transient failures

Example fix

// before: insert may target a missing partition
db.insert_block(&chain, &block).await?;
// after: guarantee partition exists once at startup
db.create_block_partition(&chain).await?;
db.insert_block(&chain, &block).await?;

// ensure the block partition exists before inserting
let part: (bool,) = sqlx::query_as(
    "SELECT EXISTS (SELECT 1 FROM pg_class WHERE relname = $1)",
).bind(format!("block_{}", chain.chain_id)).fetch_one(&pool).await?;
if !part.0 { db.create_block_partition(chain).await?; }

match db.insert_block(&chain, &block).await {
    Err(e) if e.to_string().contains("does not exist") => {
        db.create_block_partition(&chain).await?;
        db.insert_block(&chain, &block).await?;
    }
    other => other?,
}

When it happens

Trigger: Calling the single-block insert method when the block partition for the chain doesn't exist, a constraint fails (e.g. duplicate key beyond ON CONFLICT handling, NOT NULL violation), or the connection drops.

Common situations: Inserting a block before create_block_partition was called; schema drift making bound types invalid (e.g. l1_gas_price as numeric text); database connectivity issues during live sync.

Related errors

• Failed to batch insert into block table: {e}
• Failed to batch insert into pool_event_block table: {e}
• Failed to insert into dex table: {e}
• Failed to insert into pool table: {e}
• Failed to batch insert into pool table: {e}

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/4abb692e41c5d359. Report an issue: GitHub.