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Add a u256_hex_be module to encode/decode U256 types (#3321)

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## Issue Addressed

Resolves #3314 

## Proposed Changes

Add a module to encode/decode u256 types according to the execution layer encoding/decoding standards
https://github.com/ethereum/execution-apis/blob/main/src/engine/specification.md#structures

Updates `JsonExecutionPayloadV1.base_fee_per_gas`, `JsonExecutionPayloadHeaderV1.base_fee_per_gas`  and `TransitionConfigurationV1.terminal_total_difficulty` to encode/decode according to standards

Co-authored-by: Michael Sproul <micsproul@gmail.com>
This commit is contained in:
Pawan Dhananjay
2022-07-15 07:31:21 +00:00
parent 28b0ff27ff
commit 5243cc6c30
3 changed files with 148 additions and 0 deletions
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3
beacon_node/execution_layer/src/engine_api/json_structures.rs
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@@ -78,6 +78,7 @@ pub struct JsonExecutionPayloadHeaderV1<T: EthSpec> {
pub timestamp: u64,
#[serde(with = "ssz_types::serde_utils::hex_var_list")]
pub extra_data: VariableList<u8, T::MaxExtraDataBytes>,
#[serde(with = "eth2_serde_utils::u256_hex_be")]
pub base_fee_per_gas: Uint256,
pub block_hash: ExecutionBlockHash,
pub transactions_root: Hash256,
@@ -142,6 +143,7 @@ pub struct JsonExecutionPayloadV1<T: EthSpec> {
pub timestamp: u64,
#[serde(with = "ssz_types::serde_utils::hex_var_list")]
pub extra_data: VariableList<u8, T::MaxExtraDataBytes>,
#[serde(with = "eth2_serde_utils::u256_hex_be")]
pub base_fee_per_gas: Uint256,
pub block_hash: ExecutionBlockHash,
#[serde(with = "ssz_types::serde_utils::list_of_hex_var_list")]
@@ -486,6 +488,7 @@ impl From<ProposeBlindedBlockResponseStatus> for JsonProposeBlindedBlockResponse
#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct TransitionConfigurationV1 {
#[serde(with = "eth2_serde_utils::u256_hex_be")]
pub terminal_total_difficulty: Uint256,
pub terminal_block_hash: ExecutionBlockHash,
#[serde(with = "eth2_serde_utils::u64_hex_be")]