reth_rpc_api/
engine.rs

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1//! Server traits for the engine API
2//!
3//! This contains the `engine_` namespace and the subset of the `eth_` namespace that is exposed to
4//! the consensus client.
5
6use alloy_eips::{
7    eip4844::{BlobAndProofV1, BlobAndProofV2},
8    eip7685::RequestsOrHash,
9    BlockId, BlockNumberOrTag,
10};
11use alloy_json_rpc::RpcObject;
12use alloy_primitives::{Address, BlockHash, Bytes, B256, U256, U64};
13use alloy_rpc_types_engine::{
14    ClientVersionV1, ExecutionPayloadBodiesV1, ExecutionPayloadInputV2, ExecutionPayloadV1,
15    ExecutionPayloadV3, ForkchoiceState, ForkchoiceUpdated, PayloadId, PayloadStatus,
16};
17use alloy_rpc_types_eth::{
18    state::StateOverride, transaction::TransactionRequest, BlockOverrides,
19    EIP1186AccountProofResponse, Filter, Log, SyncStatus,
20};
21use alloy_serde::JsonStorageKey;
22use jsonrpsee::{core::RpcResult, proc_macros::rpc, RpcModule};
23use reth_engine_primitives::EngineTypes;
24
25/// Helper trait for the engine api server.
26///
27/// This type-erases the concrete [`jsonrpsee`] server implementation and only returns the
28/// [`RpcModule`] that contains all the endpoints of the server.
29pub trait IntoEngineApiRpcModule {
30    /// Consumes the type and returns all the methods and subscriptions defined in the trait and
31    /// returns them as a single [`RpcModule`]
32    fn into_rpc_module(self) -> RpcModule<()>;
33}
34
35// NOTE: We can't use associated types in the `EngineApi` trait because of jsonrpsee, so we use a
36// generic here. It would be nice if the rpc macro would understand which types need to have serde.
37// By default, if the trait has a generic, the rpc macro will add e.g. `Engine: DeserializeOwned` to
38// the trait bounds, which is not what we want, because `Types` is not used directly in any of the
39// trait methods. Instead, we have to add the bounds manually. This would be disastrous if we had
40// more than one associated type used in the trait methods.
41
42#[cfg_attr(not(feature = "client"), rpc(server, namespace = "engine"), server_bounds(Engine::PayloadAttributes: jsonrpsee::core::DeserializeOwned))]
43#[cfg_attr(feature = "client", rpc(server, client, namespace = "engine", client_bounds(Engine::PayloadAttributes: jsonrpsee::core::Serialize + Clone), server_bounds(Engine::PayloadAttributes: jsonrpsee::core::DeserializeOwned)))]
44pub trait EngineApi<Engine: EngineTypes> {
45    /// See also <https://github.com/ethereum/execution-apis/blob/6709c2a795b707202e93c4f2867fa0bf2640a84f/src/engine/paris.md#engine_newpayloadv1>
46    /// Caution: This should not accept the `withdrawals` field
47    #[method(name = "newPayloadV1")]
48    async fn new_payload_v1(&self, payload: ExecutionPayloadV1) -> RpcResult<PayloadStatus>;
49
50    /// See also <https://github.com/ethereum/execution-apis/blob/584905270d8ad665718058060267061ecfd79ca5/src/engine/shanghai.md#engine_newpayloadv2>
51    #[method(name = "newPayloadV2")]
52    async fn new_payload_v2(&self, payload: ExecutionPayloadInputV2) -> RpcResult<PayloadStatus>;
53
54    /// Post Cancun payload handler
55    ///
56    /// See also <https://github.com/ethereum/execution-apis/blob/main/src/engine/cancun.md#engine_newpayloadv3>
57    #[method(name = "newPayloadV3")]
58    async fn new_payload_v3(
59        &self,
60        payload: ExecutionPayloadV3,
61        versioned_hashes: Vec<B256>,
62        parent_beacon_block_root: B256,
63    ) -> RpcResult<PayloadStatus>;
64
65    /// Post Prague payload handler
66    ///
67    /// See also <https://github.com/ethereum/execution-apis/blob/main/src/engine/prague.md#engine_newpayloadv4>
68    #[method(name = "newPayloadV4")]
69    async fn new_payload_v4(
70        &self,
71        payload: ExecutionPayloadV3,
72        versioned_hashes: Vec<B256>,
73        parent_beacon_block_root: B256,
74        execution_requests: RequestsOrHash,
75    ) -> RpcResult<PayloadStatus>;
76
77    /// See also <https://github.com/ethereum/execution-apis/blob/6709c2a795b707202e93c4f2867fa0bf2640a84f/src/engine/paris.md#engine_forkchoiceupdatedv1>
78    ///
79    /// Caution: This should not accept the `withdrawals` field in the payload attributes.
80    #[method(name = "forkchoiceUpdatedV1")]
81    async fn fork_choice_updated_v1(
82        &self,
83        fork_choice_state: ForkchoiceState,
84        payload_attributes: Option<Engine::PayloadAttributes>,
85    ) -> RpcResult<ForkchoiceUpdated>;
86
87    /// Post Shanghai forkchoice update handler
88    ///
89    /// This is the same as `forkchoiceUpdatedV1`, but expects an additional `withdrawals` field in
90    /// the `payloadAttributes`, if payload attributes are provided.
91    ///
92    /// See also <https://github.com/ethereum/execution-apis/blob/6709c2a795b707202e93c4f2867fa0bf2640a84f/src/engine/shanghai.md#engine_forkchoiceupdatedv2>
93    ///
94    /// Caution: This should not accept the `parentBeaconBlockRoot` field in the payload
95    /// attributes.
96    #[method(name = "forkchoiceUpdatedV2")]
97    async fn fork_choice_updated_v2(
98        &self,
99        fork_choice_state: ForkchoiceState,
100        payload_attributes: Option<Engine::PayloadAttributes>,
101    ) -> RpcResult<ForkchoiceUpdated>;
102
103    /// Post Cancun forkchoice update handler
104    ///
105    /// This is the same as `forkchoiceUpdatedV2`, but expects an additional
106    /// `parentBeaconBlockRoot` field in the `payloadAttributes`, if payload attributes
107    /// are provided.
108    ///
109    /// See also <https://github.com/ethereum/execution-apis/blob/main/src/engine/cancun.md#engine_forkchoiceupdatedv3>
110    #[method(name = "forkchoiceUpdatedV3")]
111    async fn fork_choice_updated_v3(
112        &self,
113        fork_choice_state: ForkchoiceState,
114        payload_attributes: Option<Engine::PayloadAttributes>,
115    ) -> RpcResult<ForkchoiceUpdated>;
116
117    /// See also <https://github.com/ethereum/execution-apis/blob/6709c2a795b707202e93c4f2867fa0bf2640a84f/src/engine/paris.md#engine_getpayloadv1>
118    ///
119    /// Returns the most recent version of the payload that is available in the corresponding
120    /// payload build process at the time of receiving this call.
121    ///
122    /// Caution: This should not return the `withdrawals` field
123    ///
124    /// Note:
125    /// > Provider software MAY stop the corresponding build process after serving this call.
126    #[method(name = "getPayloadV1")]
127    async fn get_payload_v1(
128        &self,
129        payload_id: PayloadId,
130    ) -> RpcResult<Engine::ExecutionPayloadEnvelopeV1>;
131
132    /// See also <https://github.com/ethereum/execution-apis/blob/6709c2a795b707202e93c4f2867fa0bf2640a84f/src/engine/shanghai.md#engine_getpayloadv2>
133    ///
134    /// Returns the most recent version of the payload that is available in the corresponding
135    /// payload build process at the time of receiving this call. Note:
136    /// > Provider software MAY stop the corresponding build process after serving this call.
137    #[method(name = "getPayloadV2")]
138    async fn get_payload_v2(
139        &self,
140        payload_id: PayloadId,
141    ) -> RpcResult<Engine::ExecutionPayloadEnvelopeV2>;
142
143    /// Post Cancun payload handler which also returns a blobs bundle.
144    ///
145    /// See also <https://github.com/ethereum/execution-apis/blob/main/src/engine/cancun.md#engine_getpayloadv3>
146    ///
147    /// Returns the most recent version of the payload that is available in the corresponding
148    /// payload build process at the time of receiving this call. Note:
149    /// > Provider software MAY stop the corresponding build process after serving this call.
150    #[method(name = "getPayloadV3")]
151    async fn get_payload_v3(
152        &self,
153        payload_id: PayloadId,
154    ) -> RpcResult<Engine::ExecutionPayloadEnvelopeV3>;
155
156    /// Post Prague payload handler.
157    ///
158    /// See also <https://github.com/ethereum/execution-apis/blob/main/src/engine/prague.md#engine_getpayloadv4>
159    ///
160    /// Returns the most recent version of the payload that is available in the corresponding
161    /// payload build process at the time of receiving this call. Note:
162    /// > Provider software MAY stop the corresponding build process after serving this call.
163    #[method(name = "getPayloadV4")]
164    async fn get_payload_v4(
165        &self,
166        payload_id: PayloadId,
167    ) -> RpcResult<Engine::ExecutionPayloadEnvelopeV4>;
168
169    /// See also <https://github.com/ethereum/execution-apis/blob/6452a6b194d7db269bf1dbd087a267251d3cc7f8/src/engine/shanghai.md#engine_getpayloadbodiesbyhashv1>
170    #[method(name = "getPayloadBodiesByHashV1")]
171    async fn get_payload_bodies_by_hash_v1(
172        &self,
173        block_hashes: Vec<BlockHash>,
174    ) -> RpcResult<ExecutionPayloadBodiesV1>;
175
176    /// See also <https://github.com/ethereum/execution-apis/blob/6452a6b194d7db269bf1dbd087a267251d3cc7f8/src/engine/shanghai.md#engine_getpayloadbodiesbyrangev1>
177    ///
178    /// Returns the execution payload bodies by the range starting at `start`, containing `count`
179    /// blocks.
180    ///
181    /// WARNING: This method is associated with the BeaconBlocksByRange message in the consensus
182    /// layer p2p specification, meaning the input should be treated as untrusted or potentially
183    /// adversarial.
184    ///
185    /// Implementers should take care when acting on the input to this method, specifically
186    /// ensuring that the range is limited properly, and that the range boundaries are computed
187    /// correctly and without panics.
188    #[method(name = "getPayloadBodiesByRangeV1")]
189    async fn get_payload_bodies_by_range_v1(
190        &self,
191        start: U64,
192        count: U64,
193    ) -> RpcResult<ExecutionPayloadBodiesV1>;
194
195    /// This function will return the ClientVersionV1 object.
196    /// See also:
197    /// <https://github.com/ethereum/execution-apis/blob/03911ffc053b8b806123f1fc237184b0092a485a/src/engine/identification.md#engine_getclientversionv1>make fmt
198    ///
199    ///
200    /// - When connected to a single execution client, the consensus client **MUST** receive an
201    ///   array with a single `ClientVersionV1` object.
202    /// - When connected to multiple execution clients via a multiplexer, the multiplexer **MUST**
203    ///   concatenate the responses from each execution client into a single,
204    /// flat array before returning the response to the consensus client.
205    #[method(name = "getClientVersionV1")]
206    async fn get_client_version_v1(
207        &self,
208        client_version: ClientVersionV1,
209    ) -> RpcResult<Vec<ClientVersionV1>>;
210
211    /// See also <https://github.com/ethereum/execution-apis/blob/6452a6b194d7db269bf1dbd087a267251d3cc7f8/src/engine/common.md#capabilities>
212    #[method(name = "exchangeCapabilities")]
213    async fn exchange_capabilities(&self, capabilities: Vec<String>) -> RpcResult<Vec<String>>;
214
215    /// Fetch blobs for the consensus layer from the in-memory blob cache.
216    #[method(name = "getBlobsV1")]
217    async fn get_blobs_v1(
218        &self,
219        versioned_hashes: Vec<B256>,
220    ) -> RpcResult<Vec<Option<BlobAndProofV1>>>;
221
222    /// Fetch blobs for the consensus layer from the blob store.
223    #[method(name = "getBlobsV2")]
224    async fn get_blobs_v2(
225        &self,
226        versioned_hashes: Vec<B256>,
227    ) -> RpcResult<Vec<Option<BlobAndProofV2>>>;
228}
229
230/// A subset of the ETH rpc interface: <https://ethereum.github.io/execution-apis/api-documentation/>
231///
232/// This also includes additional eth functions required by optimism.
233///
234/// Specifically for the engine auth server: <https://github.com/ethereum/execution-apis/blob/main/src/engine/common.md#underlying-protocol>
235#[cfg_attr(not(feature = "client"), rpc(server, namespace = "eth"))]
236#[cfg_attr(feature = "client", rpc(server, client, namespace = "eth"))]
237pub trait EngineEthApi<B: RpcObject, R: RpcObject> {
238    /// Returns an object with data about the sync status or false.
239    #[method(name = "syncing")]
240    fn syncing(&self) -> RpcResult<SyncStatus>;
241
242    /// Returns the chain ID of the current network.
243    #[method(name = "chainId")]
244    async fn chain_id(&self) -> RpcResult<Option<U64>>;
245
246    /// Returns the number of most recent block.
247    #[method(name = "blockNumber")]
248    fn block_number(&self) -> RpcResult<U256>;
249
250    /// Executes a new message call immediately without creating a transaction on the block chain.
251    #[method(name = "call")]
252    async fn call(
253        &self,
254        request: TransactionRequest,
255        block_id: Option<BlockId>,
256        state_overrides: Option<StateOverride>,
257        block_overrides: Option<Box<BlockOverrides>>,
258    ) -> RpcResult<Bytes>;
259
260    /// Returns code at a given address at given block number.
261    #[method(name = "getCode")]
262    async fn get_code(&self, address: Address, block_id: Option<BlockId>) -> RpcResult<Bytes>;
263
264    /// Returns information about a block by hash.
265    #[method(name = "getBlockByHash")]
266    async fn block_by_hash(&self, hash: B256, full: bool) -> RpcResult<Option<B>>;
267
268    /// Returns information about a block by number.
269    #[method(name = "getBlockByNumber")]
270    async fn block_by_number(&self, number: BlockNumberOrTag, full: bool) -> RpcResult<Option<B>>;
271
272    /// Returns all transaction receipts for a given block.
273    #[method(name = "getBlockReceipts")]
274    async fn block_receipts(&self, block_id: BlockId) -> RpcResult<Option<Vec<R>>>;
275
276    /// Sends signed transaction, returning its hash.
277    #[method(name = "sendRawTransaction")]
278    async fn send_raw_transaction(&self, bytes: Bytes) -> RpcResult<B256>;
279
280    /// Returns the receipt of a transaction by transaction hash.
281    #[method(name = "getTransactionReceipt")]
282    async fn transaction_receipt(&self, hash: B256) -> RpcResult<Option<R>>;
283
284    /// Returns logs matching given filter object.
285    #[method(name = "getLogs")]
286    async fn logs(&self, filter: Filter) -> RpcResult<Vec<Log>>;
287
288    /// Returns the account and storage values of the specified account including the Merkle-proof.
289    /// This call can be used to verify that the data you are pulling from is not tampered with.
290    #[method(name = "getProof")]
291    async fn get_proof(
292        &self,
293        address: Address,
294        keys: Vec<JsonStorageKey>,
295        block_number: Option<BlockId>,
296    ) -> RpcResult<EIP1186AccountProofResponse>;
297}
reth_rpc_api/engine.rs

reth_rpc_api/
engine.rs
