NextBlockEnvAttributes in reth_node_api

NextBlockEnvAttributes in reth_node_api - Rust

Struct NextBlockEnvAttributes

pub struct NextBlockEnvAttributes {
    pub timestamp: u64,
    pub suggested_fee_recipient: Address,
    pub prev_randao: FixedBytes<32>,
    pub gas_limit: u64,
    pub parent_beacon_block_root: Option<FixedBytes<32>>,
    pub withdrawals: Option<Withdrawals>,
    pub extra_data: Bytes,
}

Expand description

Traits and helper types used to abstract over EVM methods and types. Represents additional attributes required to configure the next block.

This struct contains all the information needed to build a new block that cannot be derived from the parent block header alone. These attributes are typically provided by the consensus layer (CL) through the Engine API during payload building.

§Relationship with `ConfigureEvm` and `BlockAssembler`

The flow for building a new block involves:

Receive attributes from the consensus layer containing:
- Timestamp for the new block
- Fee recipient (coinbase/beneficiary)
- Randomness value (prevRandao)
- Withdrawals to process
- Parent beacon block root for EIP-4788
Configure EVM environment using these attributes: rust,ignore let evm_env = evm_config.next_evm_env(&parent, &attributes)?;
Build the block with transactions: rust,ignore let mut builder = evm_config.builder_for_next_block( &mut state, &parent, attributes )?;
Assemble the final block using BlockAssembler which takes:
- Execution results from all transactions
- The attributes used during execution
- Final state root after all changes

This design cleanly separates:

Configuration (what parameters to use) - handled by NextBlockEnvAttributes
Execution (running transactions) - handled by BlockExecutor
Assembly (creating the final block) - handled by BlockAssembler

The timestamp of the next block.

The suggested fee recipient for the next block.

§prev_randao: FixedBytes<32>

The randomness value for the next block.

Block gas limit.

The parent beacon block root.

Withdrawals

Optional extra data.

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Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

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🔬This is a nightly-only experimental API. (clone_to_uninit #126799)

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Compare self to key and return true if they are equal.

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Returns the argument unchanged.

Builds a [TxEnv] from a transaction and a sender address.

Builds a [TxEnv] from a transaction, its sender, and encoded transaction bytes.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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The alignment of pointer.

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Available on crate feature propagate-header only.

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Apply a transformation to the request body. Read more

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Apply a transformation to the response body. Read more

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Compresses response bodies. Read more

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High level tracing that classifies responses using HTTP status codes. Read more

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