feat(engine): Optional Serde (#1283)

* feat: optional serde

* fix: beacon types

* fix: provider

* fix: eip7547

* fix: run ci

crates/eip7547/Cargo.toml

@@ -20,7 +20,7 @@ workspace = true
 
 [dependencies]
 alloy-primitives = { workspace = true, features = ["rlp", "serde"] }
-alloy-rpc-types-engine = { workspace = true }
+alloy-rpc-types-engine = { workspace = true, features = ["serde"] }
 alloy-serde = { workspace = true }
 
 # serde

crates/provider/Cargo.toml

@@ -32,7 +32,7 @@ alloy-rpc-types-anvil = { workspace = true, optional = true }
 alloy-rpc-types-eth = { workspace = true, features = ["serde"] }
 alloy-rpc-types-trace = { workspace = true, optional = true }
 alloy-rpc-types-txpool = { workspace = true, optional = true }
-alloy-rpc-types-engine = { workspace = true, optional = true }
+alloy-rpc-types-engine = { workspace = true, optional = true, features = ["serde"] }
 alloy-rpc-types = { workspace = true, optional = true }
 alloy-transport-http = { workspace = true, optional = true }
 alloy-transport-ipc = { workspace = true, optional = true }

crates/rpc-types-beacon/Cargo.toml

@@ -20,7 +20,7 @@ workspace = true
 [dependencies]
 # ethereum
 alloy-eips = { workspace = true, features = ["serde"] }
-alloy-rpc-types-engine.workspace = true
+alloy-rpc-types-engine = { workspace = true, features = ["serde"] }
 alloy-primitives.workspace = true
 
 # ssz

crates/rpc-types-engine/Cargo.toml

@@ -20,16 +20,18 @@ workspace = true
 
 [dependencies]
 # ethereum
-alloy-serde.workspace = true
 alloy-rlp = { workspace = true, features = ["arrayvec", "derive"] }
 alloy-primitives = { workspace = true, features = ["rlp", "serde"] }
 alloy-consensus = { workspace = true, features = ["serde"] }
 alloy-eips = { workspace = true, features = ["serde"] }
 
 # misc
-serde = { workspace = true, features = ["derive"] }
 derive_more = { workspace = true, features = ["display"] }
 
+# serde
+alloy-serde = { workspace = true, optional = true }
+serde = { workspace = true, features = ["derive"], optional = true }
+
 # ssz
 ethereum_ssz_derive = { workspace = true, optional = true }
 ethereum_ssz = { workspace = true, optional = true }
@@ -42,8 +44,9 @@ rand = { workspace = true, optional = true }
 jsonwebtoken = { version = "9.3.0", optional = true }
 
 [features]
-default = ["jwt", "std"]
+default = ["jwt", "std", "serde"]
 std = ["alloy-consensus/std", "derive_more/std"]
+serde = ["dep:serde", "dep:alloy-serde"]
 jwt = ["dep:jsonwebtoken", "dep:rand"]
 jsonrpsee-types = ["dep:jsonrpsee-types"]
 ssz = ["std", "dep:ethereum_ssz", "dep:ethereum_ssz_derive", "alloy-eips/ssz"]

crates/rpc-types-engine/src/cancun.rs

@@ -10,7 +10,8 @@ use alloy_primitives::B256;
 ///
 /// See also:
 /// <https://github.com/ethereum/execution-apis/blob/fe8e13c288c592ec154ce25c534e26cb7ce0530d/src/engine/cancun.md#request>
-#[derive(Clone, Debug, Default, PartialEq, Eq, Hash, serde::Serialize, serde::Deserialize)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct CancunPayloadFields {
     /// The parent beacon block root.
     pub parent_beacon_block_root: B256,

crates/rpc-types-engine/src/forkchoice.rs

@@ -1,7 +1,6 @@
 use super::{PayloadStatus, PayloadStatusEnum};
 use crate::PayloadId;
 use alloy_primitives::B256;
-use serde::{Deserialize, Serialize};
 
 /// invalid forkchoice state error code.
 pub const INVALID_FORK_CHOICE_STATE_ERROR: i32 = -38002;
@@ -19,8 +18,9 @@ pub const INVALID_PAYLOAD_ATTRIBUTES_ERROR_MSG: &str = "Invalid payload attribut
 pub type ForkChoiceUpdateResult = Result<ForkchoiceUpdated, ForkchoiceUpdateError>;
 
 /// This structure encapsulates the fork choice state
-#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
+#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct ForkchoiceState {
     /// Hash of the head block.
     pub head_block_hash: B256,
@@ -116,8 +116,9 @@ impl From<ForkchoiceUpdateError> for jsonrpsee_types::error::ErrorObject<'static
 /// Represents a successfully _processed_ forkchoice state update.
 ///
 /// Note: this can still be INVALID if the provided payload was invalid.
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
+#[derive(Clone, Debug, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct ForkchoiceUpdated {
     /// Represents the outcome of the validation of the payload, independently of the payload being
     /// valid or not.

crates/rpc-types-engine/src/identification.rs

@@ -2,11 +2,11 @@
 
 use alloc::string::{String, ToString};
 use core::str::FromStr;
-use serde::{Deserialize, Serialize};
 
 /// This enum defines a standard for specifying a client with just two letters. Clients teams which
 /// have a code reserved in this list MUST use this code when identifying themselves.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum ClientCode {
     /// Besu
     BU,
@@ -101,8 +101,9 @@ impl core::fmt::Display for ClientCode {
 }
 
 /// Contains information which identifies a client implementation.
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
+#[derive(Clone, Debug, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
 pub struct ClientVersionV1 {
     /// Client code, e.g. GE for Geth
     pub code: ClientCode,
@@ -120,6 +121,7 @@ mod tests {
     use super::*;
 
     #[test]
+    #[cfg(feature = "serde")]
     fn client_id_serde() {
         let s = r#"{"code":"RH","name":"Reth","version":"v1.10.8","commit":"fa4ff922"}"#;
         let v: ClientVersionV1 = serde_json::from_str(s).unwrap();

crates/rpc-types-engine/src/jwt.rs

@@ -7,7 +7,6 @@ use jsonwebtoken::{
     decode, errors::ErrorKind, get_current_timestamp, Algorithm, DecodingKey, Validation,
 };
 use rand::Rng;
-use serde::{Deserialize, Serialize};
 #[cfg(feature = "std")]
 use std::{
     fs, io,
@@ -117,7 +116,8 @@ const JWT_SIGNATURE_ALGO: Algorithm = Algorithm::HS256;
 ///
 /// The Engine API spec requires that just the `iat` (issued-at) claim is provided.
 /// It ignores claims that are optional or additional for this specification.
-#[derive(Copy, Clone, Debug, Serialize, Deserialize)]
+#[derive(Copy, Clone, Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Claims {
     /// The "iat" value MUST be a number containing a NumericDate value.
     /// According to the RFC A NumericDate represents the number of seconds since
@@ -215,6 +215,7 @@ impl JwtSecret {
     /// - The JWT `exp` (expiration time) claim is validated by default if defined.
     ///
     /// See also: [JWT Claims - Engine API specs](https://github.com/ethereum/execution-apis/blob/main/src/engine/authentication.md#jwt-claims)
+    #[cfg(feature = "serde")]
     pub fn validate(&self, jwt: &str) -> Result<(), JwtError> {
         // Create a new validation object with the required signature algorithm
         // and ensure that the `iat` claim is present. The `exp` claim is validated if defined.
@@ -250,6 +251,7 @@ impl JwtSecret {
 
     /// Encode the header and claims given and sign the payload using the algorithm from the header
     /// and the key.
+    #[cfg(feature = "serde")]
     pub fn encode(&self, claims: &Claims) -> Result<String, jsonwebtoken::errors::Error> {
         let bytes = &self.0;
         let key = jsonwebtoken::EncodingKey::from_secret(bytes);
@@ -331,6 +333,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "serde")]
     fn validation_ok() {
         let secret = JwtSecret::random();
         let claims = Claims { iat: get_current_timestamp(), exp: Some(10000000000) };
@@ -342,6 +345,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "serde")]
     fn validation_with_current_time_ok() {
         let secret = JwtSecret::random();
         let claims = Claims::default();
@@ -353,7 +357,7 @@ mod tests {
     }
 
     #[test]
-    #[cfg(feature = "std")]
+    #[cfg(all(feature = "std", feature = "serde"))]
     fn validation_error_iat_out_of_window() {
         let secret = JwtSecret::random();
 
@@ -379,6 +383,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "serde")]
     fn validation_error_exp_expired() {
         let secret = JwtSecret::random();
         let claims = Claims { iat: get_current_timestamp(), exp: Some(1) };
@@ -390,6 +395,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "serde")]
     fn validation_error_wrong_signature() {
         let secret_1 = JwtSecret::random();
         let claims = Claims { iat: get_current_timestamp(), exp: Some(10000000000) };
@@ -402,6 +408,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "serde")]
     fn validation_error_unsupported_algorithm() {
         let secret = JwtSecret::random();
         let bytes = &secret.0;
@@ -417,6 +424,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "serde")]
     fn valid_without_exp_claim() {
         let secret = JwtSecret::random();