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engine: unify request objects #565

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engine: unify request objects #565

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cd7d992
engine: unify request objects
lightclient Jul 18, 2024
5c357e0
engine: rename request to execution request
lightclient Aug 21, 2024
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45 changes: 14 additions & 31 deletions src/engine/prague.md
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Expand Up @@ -10,9 +10,7 @@ This specification is based on and extends [Engine API - Cancun](./cancun.md) sp
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->

- [Structures](#structures)
- [DepositRequestV1](#depositrequestv1)
- [WithdrawalRequestV1](#withdrawalrequestv1)
- [ConsolidationRequestV1](#consolidationrequestv1)
- [RequestV1](#requestv1)
- [ExecutionPayloadV4](#executionpayloadv4)
- [ExecutionPayloadBodyV2](#executionpayloadbodyv2)
- [Methods](#methods)
Expand All @@ -38,39 +36,28 @@ This specification is based on and extends [Engine API - Cancun](./cancun.md) sp

## Structures

### DepositRequestV1
This structure maps onto the deposit object from [EIP-6110](https://eips.ethereum.org/EIPS/eip-6110).
### RequestV1

This structure maps onto the amalgamation of the deposit object from [EIP-6110](https://eips.ethereum.org/EIPS/eip-6110), withdrawal request from [EIP-7002](https://eips.ethereum.org/EIPS/eip-7002), and the consolidation request from [EIP-7251](https://eips.ethereum.org/EIPS/eip-7251).

The fields are encoded as follows:

- `type`: `QUANTITY`, 64 bits - [EIP-7685](https://eips.ethereum.org/EIPS/eip-7685) type byte to identify the request
- `pubkey`: `DATA`, 48 Bytes
- `withdrawalCredentials`: `DATA`, 32 Bytes
- `amount`: `QUANTITY`, 64 Bits
- `signature`: `DATA`, 96 Bytes
- `index`: `QUANTITY`, 64 Bits

*Note:* The `amount` value is represented in Gwei.

### WithdrawalRequestV1
This structure maps onto the withdrawal request from [EIP-7002](https://eips.ethereum.org/EIPS/eip-7002).
The fields are encoded as follows:

- `sourceAddress`: `DATA`, 20 Bytes
- `validatorPubkey`: `DATA`, 48 Bytes
- `amount`: `QUANTITY`, 64 Bits

*Note:* The `amount` value is represented in Gwei.

### ConsolidationRequestV1
This structure maps onto the consolidation request from [EIP-7251](https://eips.ethereum.org/EIPS/eip-7251).
The fields are encoded as follows:

- `sourceAddress`: `DATA`, 20 Bytes
- `sourcePubkey`: `DATA`, 48 Bytes
- `targetPubkey`: `DATA`, 48 Bytes

*Note:* The `amount` value is represented in Gwei.

### ExecutionPayloadV4

This structure has the syntax of [`ExecutionPayloadV3`](./cancun.md#executionpayloadv3) and appends the new fields: `depositRequests` and `withdrawalRequests`.
This structure has the syntax of [`ExecutionPayloadV3`](./cancun.md#executionpayloadv3) and appends the new field `requests`.

- `parentHash`: `DATA`, 32 Bytes
- `feeRecipient`: `DATA`, 20 Bytes
Expand All @@ -89,19 +76,15 @@ This structure has the syntax of [`ExecutionPayloadV3`](./cancun.md#executionpay
- `withdrawals`: `Array of WithdrawalV1` - Array of withdrawals, each object is an `OBJECT` containing the fields of a `WithdrawalV1` structure.
- `blobGasUsed`: `QUANTITY`, 64 Bits
- `excessBlobGas`: `QUANTITY`, 64 Bits
- `depositRequests`: `Array of DepositRequestV1` - Array of deposits, each object is an `OBJECT` containing the fields of a `DepositRequestV1` structure.
- `withdrawalRequests`: `Array of WithdrawalRequestV1` - Array of withdrawal requests, each object is an `OBJECT` containing the fields of a `WithdrawalRequestV1` structure.
- `consolidationRequests`: `Array of ConsolidationRequestV1` - Array of consolidation requests, each object is an `OBJECT` containing the fields of a `ConsolidationRequestV1` structure.
- `requests`: `Array of RequestV1` - Array of request objects

### ExecutionPayloadBodyV2

This structure has the syntax of [`ExecutionPayloadBodyV1`](./shanghai.md#executionpayloadv1) and appends the new fields: `depositRequests` and `withdrawalRequests`.
This structure has the syntax of [`ExecutionPayloadBodyV1`](./shanghai.md#executionpayloadv1) and appends the new field `requests`.

- `transactions`: `Array of DATA` - Array of transaction objects, each object is a byte list (`DATA`) representing `TransactionType || TransactionPayload` or `LegacyTransaction` as defined in [EIP-2718](https://eips.ethereum.org/EIPS/eip-2718)
- `withdrawals`: `Array of WithdrawalV1` - Array of withdrawals, each object is an `OBJECT` containing the fields of a `WithdrawalV1` structure.
- `depositRequests`: `Array of DepositRequestV1` - Array of deposits, each object is an `OBJECT` containing the fields of a `DepositRequestV1` structure.
- `withdrawalRequests`: `Array of WithdrawalRequestV1` - Array of withdrawal requests, each object is an `OBJECT` containing the fields of a `WithdrawalRequestV1` structure.
- `consolidationRequests`: `Array of ConsolidationRequestV1` - Array of consolidation requests, each object is an `OBJECT` containing the fields of a `ConsolidationRequestV1` structure.
- `requests`: `Array of RequestV1` - Array of requests, each object is an `OBJECT` containing the fields of a `RequestV1` structure.

## Methods

Expand Down Expand Up @@ -173,7 +156,7 @@ The response of this method is updated with [`ExecutionPayloadBodyV2`](#executio

This method follows the same specification as [`engine_getPayloadBodiesByHashV1`](./shanghai.md#engine_getpayloadbodiesbyhashv1) with the addition of the following:

1. Client software **MUST** set `depositRequests` and `withdrawalRequests` fields to `null` for bodies of pre-Prague blocks.
1. Client software **MUST** set `requests` field to `null` for bodies of pre-Prague blocks.

### engine_getPayloadBodiesByRangeV2

Expand All @@ -196,7 +179,7 @@ The response of this method is updated with [`ExecutionPayloadBodyV2`](#executio

This method follows the same specification as [`engine_getPayloadBodiesByRangeV2`](./shanghai.md#engine_getpayloadbodiesbyrangev1) with the addition of the following:

1. Client software **MUST** set `depositRequests` and `withdrawalRequests` fields to `null` for bodies of pre-Prague blocks.
1. Client software **MUST** set `requests` field to `null` for bodies of pre-Prague blocks.

### Update the methods of previous forks

Expand Down
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