feat: chain abstraction

crates/yttrium/Cargo.toml

@@ -25,6 +25,7 @@ alloy = { workspace = true, features = [
 ] }
 alloy-provider = { workspace = true, features = ["erc4337-api"] }
 erc6492.workspace = true
+relay_rpc = { git = "https://github.com/WalletConnect/WalletConnectRust.git" }
 
 # foundry-block-explorers = "0.2.3"
 getrandom = { version = "0.2", features = ["js"] }

crates/yttrium/src/chain_abstraction/api/mod.rs

@@ -0,0 +1,20 @@
+use alloy::primitives::Address;
+use serde::{Deserialize, Serialize};
+
+pub mod route;
+pub mod status;
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Transaction {
+    pub from: Address,
+    pub to: Address,
+    pub value: String,
+    pub gas: String,
+    pub gas_price: String,
+    pub data: String,
+    pub nonce: String,
+    pub max_fee_per_gas: String,
+    pub max_priority_fee_per_gas: String,
+    pub chain_id: String,
+}

crates/yttrium/src/chain_abstraction/api/route.rs

@@ -0,0 +1,98 @@
+use super::Transaction;
+use alloy::primitives::Address;
+use relay_rpc::domain::ProjectId;
+use serde::{Deserialize, Serialize};
+use std::convert::Infallible;
+
+pub const ROUTE_ENDPOINT_PATH: &str = "/v1/ca/orchestrator/route";
+
+#[derive(Debug, Deserialize, Serialize, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct RouteQueryParams {
+    pub project_id: ProjectId,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct RouteRequest {
+    pub transaction: Transaction,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Metadata {
+    pub funding_from: Vec<FundingMetadata>,
+    pub check_in: usize,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct FundingMetadata {
+    pub chain_id: String,
+    pub token_contract: Address,
+    pub symbol: String,
+    pub amount: String,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RouteResponseAvailable {
+    pub orchestration_id: String,
+    pub transactions: Vec<Transaction>,
+    pub metadata: Metadata,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RouteResponseNotRequired {
+    #[serde(rename = "transactions")]
+    _flag: [Infallible; 0],
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum RouteResponseSuccess {
+    Available(RouteResponseAvailable),
+    NotRequired(RouteResponseNotRequired),
+}
+
+impl RouteResponseSuccess {
+    pub fn into_option(self) -> Option<RouteResponseAvailable> {
+        match self {
+            Self::Available(a) => Some(a),
+            Self::NotRequired(_) => None,
+        }
+    }
+}
+
+/// Bridging check error response that should be returned as a normal HTTP 200
+/// response
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct RouteResponseError {
+    pub error: BridgingError,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+pub enum BridgingError {
+    NoRoutesAvailable,
+    InsufficientFunds,
+    InsufficientGasFunds,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum RouteResponse {
+    Success(RouteResponseSuccess),
+    Error(RouteResponseError),
+}
+
+impl RouteResponse {
+    pub fn into_result(
+        self,
+    ) -> Result<RouteResponseSuccess, RouteResponseError> {
+        match self {
+            Self::Success(success) => Ok(success),
+            Self::Error(error) => Err(error),
+        }
+    }
+}

crates/yttrium/src/chain_abstraction/api/status.rs

@@ -0,0 +1,53 @@
+use relay_rpc::domain::ProjectId;
+use serde::{Deserialize, Serialize};
+
+pub const STATUS_ENDPOINT_PATH: &str = "/v1/ca/orchestrator/status";
+
+#[derive(Debug, Deserialize, Serialize, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct StatusQueryParams {
+    pub project_id: ProjectId,
+    pub orchestration_id: String,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StatusResponseSuccessPending {
+    created_at: usize,
+    /// Polling interval in ms for the client
+    check_in: usize,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StatusResponseSuccessCompleted {
+    created_at: usize,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StatusResponseSuccessError {
+    created_at: usize,
+    error_reason: String,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase", tag = "status")]
+pub enum StatusResponseSuccess {
+    Pending(StatusResponseSuccessPending),
+    Completed(StatusResponseSuccessCompleted),
+    Error(StatusResponseSuccessError),
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StatusResponseError {
+    pub error: String,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum StatusResponse {
+    Success(StatusResponseSuccess),
+    Error(StatusResponseError),
+}

crates/yttrium/src/chain_abstraction/client.rs

@@ -0,0 +1,67 @@
+use super::{
+    api::{
+        route::{
+            RouteQueryParams, RouteRequest, RouteResponse, ROUTE_ENDPOINT_PATH,
+        },
+        status::{StatusQueryParams, StatusResponse, STATUS_ENDPOINT_PATH},
+        Transaction,
+    },
+    error::RouteError,
+};
+use relay_rpc::domain::ProjectId;
+use reqwest::{Client as ReqwestClient, Url};
+
+pub struct Client {
+    client: ReqwestClient,
+    base_url: Url,
+    project_id: ProjectId,
+}
+
+impl Client {
+    pub fn new(project_id: ProjectId) -> Self {
+        Self {
+            client: ReqwestClient::new(),
+            base_url: "https://rpc.walletconnect.com".parse().unwrap(),
+            project_id,
+        }
+    }
+
+    pub async fn route(
+        &self,
+        transaction: Transaction,
+    ) -> Result<RouteResponse, RouteError> {
+        let response = self
+            .client
+            .post(self.base_url.join(ROUTE_ENDPOINT_PATH).unwrap())
+            .json(&RouteRequest { transaction })
+            .query(&RouteQueryParams { project_id: self.project_id.clone() })
+            .send()
+            .await
+            .map_err(RouteError::Request)?;
+        if response.status().is_success() {
+            response.json().await.map_err(RouteError::Request)
+        } else {
+            Err(RouteError::RequestFailed(response.text().await))
+        }
+    }
+
+    pub async fn status(
+        &self,
+        orchestration_id: String,
+    ) -> Result<StatusResponse, RouteError> {
+        self.client
+            .get(self.base_url.join(STATUS_ENDPOINT_PATH).unwrap())
+            .query(&StatusQueryParams {
+                project_id: self.project_id.clone(),
+                orchestration_id,
+            })
+            .send()
+            .await
+            .map_err(RouteError::Request)?
+            .error_for_status()
+            .map_err(RouteError::Request)?
+            .json()
+            .await
+            .map_err(RouteError::Request)
+    }
+}

crates/yttrium/src/chain_abstraction/error.rs

@@ -0,0 +1,10 @@
+#[derive(thiserror::Error, Debug)]
+pub enum RouteError {
+    /// Retryable error
+    #[error("HTTP request: {0}")]
+    Request(reqwest::Error),
+
+    /// Retryable error
+    #[error("HTTP request failed: {0:?}")]
+    RequestFailed(Result<String, reqwest::Error>),
+}

crates/yttrium/src/chain_abstraction/mod.rs

@@ -0,0 +1,3 @@
+pub mod api;
+pub mod client;
+pub mod error;

crates/yttrium/src/lib.rs

@@ -5,6 +5,7 @@ pub mod account_client;
 #[cfg(not(target_arch = "wasm32"))]
 pub mod bundler;
 pub mod chain;
+pub mod chain_abstraction;
 pub mod config;
 pub mod eip7702;
 pub mod entry_point;