Add initial dYdX crate

Cargo.toml

@@ -7,6 +7,7 @@ members = [
   "crates/adapters/bybit",
   "crates/adapters/coinbase_intx",
   "crates/adapters/databento",
+  "crates/adapters/dydx",
   "crates/adapters/hyperliquid",
   "crates/adapters/okx",
   "crates/adapters/tardis",

crates/adapters/dydx/Cargo.toml

@@ -0,0 +1,89 @@
+[package]
+name = "nautilus-dydx"
+readme = "README.md"
+publish = false # Do not publish to crates.io for now
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+authors.workspace = true
+license.workspace = true
+description = "dYdX v4 exchange integration adapter for the Nautilus trading engine"
+categories.workspace = true
+keywords.workspace = true
+documentation.workspace = true
+repository.workspace = true
+homepage.workspace = true
+
+[lints]
+workspace = true
+
+[lib]
+name = "nautilus_dydx"
+crate-type = ["rlib", "cdylib"]
+
+[features]
+default = []
+extension-module = [
+  "nautilus-common/extension-module",
+  "nautilus-core/extension-module",
+  "nautilus-data/extension-module",
+  "nautilus-model/extension-module",
+  "nautilus-network/extension-module",
+  "python",
+  "pyo3/extension-module",
+]
+python = [
+  "nautilus-common/python",
+  "nautilus-core/python",
+  "nautilus-data/python",
+  "nautilus-model/python",
+  "nautilus-network/python",
+  "pyo3",
+  "pyo3-async-runtimes",
+]
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+nautilus-common = { workspace = true }
+nautilus-core = { workspace = true }
+nautilus-data = { workspace = true }
+nautilus-execution = { workspace = true }
+nautilus-live = { workspace = true }
+nautilus-model = { workspace = true }
+nautilus-network = { workspace = true }
+
+anyhow = { workspace = true }
+bip32 = "0.5"
+chrono = { workspace = true }
+cosmrs = { version = "0.21", features = ["bip32"] }
+derive_builder = { workspace = true }
+hex = "0.4"
+prost = "0.13"
+prost-types = "0.13"
+reqwest = { workspace = true }
+rust_decimal = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+serde_with = "3.11"
+strum = { workspace = true }
+thiserror = { workspace = true }
+tokio = { workspace = true }
+tokio-util = { workspace = true }
+tonic = "0.13"
+ustr = { workspace = true }
+zeroize = { version = "1.8", features = ["derive"] }
+
+pyo3 = { workspace = true, optional = true }
+pyo3-async-runtimes = { workspace = true, optional = true }
+
+[dev-dependencies]
+nautilus-testkit = { workspace = true }
+criterion = { workspace = true }
+rstest = { workspace = true }
+rust_decimal_macros = { workspace = true }
+tracing-test = { workspace = true }
+url = { workspace = true }
+axum = { workspace = true }

crates/adapters/dydx/LICENSE

@@ -0,0 +1 @@
+../../../LICENSE

crates/adapters/dydx/src/common/consts.rs

@@ -0,0 +1,103 @@
+// -------------------------------------------------------------------------------------------------
+//  Copyright (C) 2015-2025 Nautech Systems Pty Ltd. All rights reserved.
+//  https://nautechsystems.io
+//
+//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
+//  You may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+// -------------------------------------------------------------------------------------------------
+
+//! Core constants shared across the dYdX adapter components.
+
+use std::sync::LazyLock;
+
+use nautilus_model::identifiers::Venue;
+use reqwest::StatusCode;
+use ustr::Ustr;
+
+/// dYdX adapter name.
+pub const DYDX: &str = "DYDX";
+
+/// dYdX venue identifier.
+pub static DYDX_VENUE: LazyLock<Venue> = LazyLock::new(|| Venue::new(Ustr::from(DYDX)));
+
+/// dYdX mainnet chain ID.
+pub const DYDX_CHAIN_ID: &str = "dydx-mainnet-1";
+
+/// dYdX testnet chain ID.
+pub const DYDX_TESTNET_CHAIN_ID: &str = "dydx-testnet-4";
+
+/// Cosmos SDK bech32 address prefix for dYdX.
+pub const DYDX_BECH32_PREFIX: &str = "dydx";
+
+/// USDC gas denomination (native chain token).
+pub const USDC_GAS_DENOM: &str =
+    "ibc/8E27BA2D5493AF5636760E354E46004562C46AB7EC0CC4C1CA14E9E20E2545B5";
+
+/// USDC asset denomination for transfers.
+pub const USDC_DENOM: &str = "uusdc";
+
+/// HD wallet derivation path for dYdX accounts (Cosmos SLIP-0044).
+/// Format: m/44'/118'/0'/0/{account_index}
+pub const DYDX_DERIVATION_PATH_PREFIX: &str = "m/44'/118'/0'/0";
+
+/// Coin type for Cosmos ecosystem (SLIP-0044).
+pub const COSMOS_COIN_TYPE: u32 = 118;
+
+/// Determines if an HTTP status code should trigger a retry.
+///
+/// Retries on:
+/// - 429 (Too Many Requests)
+/// - 500-599 (Server Errors)
+///
+/// Does NOT retry on:
+/// - 400 (Bad Request) - indicates client error that won't be fixed by retrying
+/// - 401 (Unauthorized) - not applicable for dYdX Indexer (no auth required)
+/// - 403 (Forbidden) - typically compliance/screening issues
+/// - 404 (Not Found) - resource doesn't exist
+#[must_use]
+pub const fn should_retry_error_code(status: &StatusCode) -> bool {
+    matches!(status.as_u16(), 429 | 500..=599)
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_should_retry_429() {
+        assert!(should_retry_error_code(&StatusCode::TOO_MANY_REQUESTS));
+    }
+
+    #[test]
+    fn test_should_retry_server_errors() {
+        assert!(should_retry_error_code(&StatusCode::INTERNAL_SERVER_ERROR));
+        assert!(should_retry_error_code(&StatusCode::BAD_GATEWAY));
+        assert!(should_retry_error_code(&StatusCode::SERVICE_UNAVAILABLE));
+        assert!(should_retry_error_code(&StatusCode::GATEWAY_TIMEOUT));
+    }
+
+    #[test]
+    fn test_should_not_retry_client_errors() {
+        assert!(!should_retry_error_code(&StatusCode::BAD_REQUEST));
+        assert!(!should_retry_error_code(&StatusCode::UNAUTHORIZED));
+        assert!(!should_retry_error_code(&StatusCode::FORBIDDEN));
+        assert!(!should_retry_error_code(&StatusCode::NOT_FOUND));
+    }
+
+    #[test]
+    fn test_should_not_retry_success() {
+        assert!(!should_retry_error_code(&StatusCode::OK));
+        assert!(!should_retry_error_code(&StatusCode::CREATED));
+    }
+}