Replace once-cell and lazy-static with std types

Cargo.toml

@@ -28,11 +28,9 @@ humantime-serde = "1.1.1"
 hyper = "0.14.29"
 indexmap = "2.2.6"
 itertools = "0.12.1"
-lazy_static = "1.4.0"
 maplit = "1.0.2"
 mockall = "0.12.1"
 num = "0.4.3"
-once_cell = "1.19.0"
 primitive-types = "0.12"
 prometheus = "0.13.4"
 prometheus-metric-storage = "0.5.0"

crates/driver/Cargo.toml

@@ -35,7 +35,6 @@ hex-literal = { workspace = true }
 humantime = { workspace = true }
 humantime-serde = { workspace = true }
 hyper = { workspace = true }
-lazy_static = { workspace = true }
 indexmap = { workspace = true, features = ["serde"] }
 itertools = { workspace = true }
 mimalloc = { workspace = true }

crates/driver/src/infra/time.rs

@@ -7,7 +7,7 @@ pub fn now() -> chrono::DateTime<chrono::Utc> {
 /// During tests, the time is fixed.
 #[cfg(test)]
 pub fn now() -> chrono::DateTime<chrono::Utc> {
-    use std::sync::OnceLock;
-    static TIME: OnceLock<chrono::DateTime<chrono::Utc>> = OnceLock::new();
-    TIME.get_or_init(chrono::Utc::now).to_owned()
+    use std::sync::LazyLock;
+    static TIME: LazyLock<chrono::DateTime<chrono::Utc>> = LazyLock::new(chrono::Utc::now);
+    *TIME
 }

crates/e2e/src/api/zeroex.rs

@@ -3,17 +3,14 @@ use {
     autopilot::domain::eth::U256,
     chrono::{DateTime, NaiveDateTime, Utc},
     driver::domain::eth::H256,
-    ethcontract::{
-        common::abi::{encode, Token},
-        private::lazy_static,
-    },
+    ethcontract::common::abi::{encode, Token},
     hex_literal::hex,
     model::DomainSeparator,
     shared::{
         zeroex_api,
         zeroex_api::{Order, OrderMetadata, OrderRecord, ZeroExSignature},
     },
-    std::net::SocketAddr,
+    std::{net::SocketAddr, sync::LazyLock},
     warp::{Filter, Reply},
     web3::{signing, types::H160},
 };
@@ -155,18 +152,19 @@ struct ZeroExDomainSeparator([u8; 32]);
 impl ZeroExDomainSeparator {
     // See <https://github.com/0xProject/protocol/blob/%400x/contracts-zero-ex%400.49.0/contracts/zero-ex/contracts/src/fixins/FixinEIP712.sol>
     pub fn new(chain_id: u64, contract_addr: H160) -> Self {
-        lazy_static! {
-            /// The EIP-712 domain name used for computing the domain separator.
-            static ref DOMAIN_NAME: [u8; 32] = signing::keccak256(b"ZeroEx");
+        /// The EIP-712 domain name used for computing the domain separator.
+        static DOMAIN_NAME: LazyLock<[u8; 32]> = LazyLock::new(|| signing::keccak256(b"ZeroEx"));
 
-            /// The EIP-712 domain version used for computing the domain separator.
-            static ref DOMAIN_VERSION: [u8; 32] = signing::keccak256(b"1.0.0");
+        /// The EIP-712 domain version used for computing the domain separator.
+        static DOMAIN_VERSION: LazyLock<[u8; 32]> = LazyLock::new(|| signing::keccak256(b"1.0.0"));
+
+        /// The EIP-712 domain type used computing the domain separator.
+        static DOMAIN_TYPE_HASH: LazyLock<[u8; 32]> = LazyLock::new(|| {
+            signing::keccak256(
+            b"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)",
+        )
+        });
 
-            /// The EIP-712 domain type used computing the domain separator.
-            static ref DOMAIN_TYPE_HASH: [u8; 32] = signing::keccak256(
-                b"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)",
-            );
-        }
         let abi_encode_string = encode(&[
             Token::FixedBytes((*DOMAIN_TYPE_HASH).into()),
             Token::FixedBytes((*DOMAIN_NAME).into()),

crates/ethrpc/Cargo.toml

@@ -16,7 +16,6 @@ async-trait = { workspace = true }
 futures = { workspace = true }
 hex = { workspace = true }
 hex-literal = { workspace = true }
-lazy_static = { workspace = true }
 mockall = { workspace = true }
 observe = { path = "../observe" }
 primitive-types = { workspace = true }

crates/ethrpc/src/multicall.rs

@@ -8,8 +8,7 @@ use {
         tokens::{self, Tokenize as _},
     },
     hex_literal::hex,
-    lazy_static::lazy_static,
-    std::iter,
+    std::{iter, sync::LazyLock},
     web3::{
         self,
         api::Eth,
@@ -160,12 +159,12 @@ fn decode(len: usize, return_data: Bytes) -> Vec<Result<Vec<u8>, ExecutionError>
 type ReturnData = Vec<(bool, ethcontract::Bytes<Vec<u8>>)>;
 
 fn decode_return_data(len: usize, return_data: Bytes) -> Result<ReturnData, DecodeError> {
-    lazy_static! {
-        static ref KIND: [ParamType; 1] = [ParamType::Array(Box::new(ParamType::Tuple(vec![
+    static KIND: LazyLock<[ParamType; 1]> = LazyLock::new(|| {
+        [ParamType::Array(Box::new(ParamType::Tuple(vec![
             ParamType::Bool,
             ParamType::Bytes,
-        ])),)];
-    }
+        ])))]
+    });
 
     let tokens = ethabi::decode(&*KIND, &return_data.0)?;
     let (results,) = <(ReturnData,)>::from_token(Token::Tuple(tokens))?;

crates/model/Cargo.toml

@@ -17,7 +17,6 @@ chrono = { workspace = true, features = ["serde", "clock"] }
 derive_more = { workspace = true }
 hex = { workspace = true, default-features = false }
 hex-literal = { workspace = true }
-lazy_static = { workspace = true }
 number = { path = "../number" }
 num = { workspace = true }
 primitive-types = { workspace = true }

crates/model/src/lib.rs

@@ -12,9 +12,8 @@ pub mod trade;
 
 use {
     hex::{FromHex, FromHexError},
-    lazy_static::lazy_static,
     primitive_types::H160,
-    std::fmt,
+    std::{fmt, sync::LazyLock},
     web3::{
         ethabi::{encode, Token},
         signing,
@@ -115,18 +114,19 @@ impl std::fmt::Debug for DomainSeparator {
 
 impl DomainSeparator {
     pub fn new(chain_id: u64, contract_address: H160) -> Self {
-        lazy_static! {
-            /// The EIP-712 domain name used for computing the domain separator.
-            static ref DOMAIN_NAME: [u8; 32] = signing::keccak256(b"Gnosis Protocol");
+        /// The EIP-712 domain name used for computing the domain separator.
+        static DOMAIN_NAME: LazyLock<[u8; 32]> =
+            LazyLock::new(|| signing::keccak256(b"Gnosis Protocol"));
 
-            /// The EIP-712 domain version used for computing the domain separator.
-            static ref DOMAIN_VERSION: [u8; 32] = signing::keccak256(b"v2");
+        /// The EIP-712 domain version used for computing the domain separator.
+        static DOMAIN_VERSION: LazyLock<[u8; 32]> = LazyLock::new(|| signing::keccak256(b"v2"));
 
-            /// The EIP-712 domain type used computing the domain separator.
-            static ref DOMAIN_TYPE_HASH: [u8; 32] = signing::keccak256(
-                b"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)",
-            );
-        }
+        /// The EIP-712 domain type used computing the domain separator.
+        static DOMAIN_TYPE_HASH: LazyLock<[u8; 32]> = LazyLock::new(|| {
+            signing::keccak256(
+            b"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)",
+        )
+        });
         let abi_encode_string = encode(&[
             Token::Uint((*DOMAIN_TYPE_HASH).into()),
             Token::Uint((*DOMAIN_NAME).into()),

crates/observe/Cargo.toml

@@ -10,7 +10,6 @@ atty = "0.2"
 async-trait = { workspace = true }
 console-subscriber = "0.3.0"
 futures = { workspace = true }
-once_cell = { workspace = true }
 pin-project-lite = "0.2.14"
 prometheus = { workspace = true }
 prometheus-metric-storage = { workspace = true }

crates/observe/src/metrics.rs

@@ -1,13 +1,17 @@
 use {
-    once_cell::sync::OnceCell,
     prometheus::Encoder,
-    std::{collections::HashMap, convert::Infallible, net::SocketAddr, sync::Arc},
+    std::{
+        collections::HashMap,
+        convert::Infallible,
+        net::SocketAddr,
+        sync::{Arc, OnceLock},
+    },
     tokio::task::{self, JoinHandle},
     warp::{Filter, Rejection, Reply},
 };
 
 /// Global metrics registry used by all components.
-static REGISTRY: OnceCell<prometheus_metric_storage::StorageRegistry> = OnceCell::new();
+static REGISTRY: OnceLock<prometheus_metric_storage::StorageRegistry> = OnceLock::new();
 
 /// Configure global metrics registry.
 ///

crates/shared/Cargo.toml

@@ -34,7 +34,6 @@ hex-literal = { workspace = true }
 humantime = { workspace = true }
 indexmap = { workspace = true }
 itertools = { workspace = true }
-lazy_static = { workspace = true }
 maplit = { workspace = true }
 mockall = { workspace = true }
 model = { path = "../model" }

crates/shared/src/external_prices.rs

@@ -9,10 +9,12 @@ use {
     crate::conversions::U256Ext,
     anyhow::{bail, Result},
     ethcontract::{H160, U256},
-    lazy_static::lazy_static,
     model::order::BUY_ETH_ADDRESS,
     num::{BigInt, BigRational, One as _, ToPrimitive as _},
-    std::collections::{BTreeMap, HashMap},
+    std::{
+        collections::{BTreeMap, HashMap},
+        sync::LazyLock,
+    },
 };
 
 /// A collection of external prices used for converting token amounts to native
@@ -72,9 +74,7 @@ impl Default for ExternalPrices {
     }
 }
 
-lazy_static! {
-    static ref UNIT: BigInt = BigInt::from(1_000_000_000_000_000_000_u128);
-}
+static UNIT: LazyLock<BigInt> = LazyLock::new(|| BigInt::from(1_000_000_000_000_000_000_u128));
 
 /// Converts a token price from the orderbook API `/auction` endpoint to an
 /// native token exchange rate.

crates/shared/src/price_estimation/native/mod.rs

@@ -1,12 +1,11 @@
 use {
     crate::price_estimation::{PriceEstimating, PriceEstimationError, Query},
     bigdecimal::{BigDecimal, ToPrimitive},
-    cached::once_cell::sync::Lazy,
     futures::FutureExt,
     model::order::OrderKind,
     number::nonzero::U256 as NonZeroU256,
     primitive_types::{H160, U256},
-    std::sync::Arc,
+    std::sync::{Arc, LazyLock},
 };
 
 mod coingecko;
@@ -19,7 +18,7 @@ pub type NativePriceEstimateResult = Result<NativePrice, PriceEstimationError>;
 
 /// Convert from normalized price to floating point price
 pub fn from_normalized_price(price: BigDecimal) -> Option<f64> {
-    static ONE_E18: Lazy<BigDecimal> = Lazy::new(|| BigDecimal::try_from(1e18).unwrap());
+    static ONE_E18: LazyLock<BigDecimal> = LazyLock::new(|| BigDecimal::try_from(1e18).unwrap());
 
     // Divide by 1e18 to reverse the multiplication by 1e18
     let normalized_price = price / ONE_E18.clone();

crates/shared/src/sources/balancer_v2/swap/fixed_point.rs

@@ -7,13 +7,13 @@ use {
     super::error::Error,
     anyhow::{bail, ensure, Context, Result},
     ethcontract::U256,
-    lazy_static::lazy_static,
     num::{BigInt, BigRational},
     number::conversions::{big_int_to_u256, u256_to_big_int},
     std::{
         convert::TryFrom,
         fmt::{self, Debug, Formatter},
         str::FromStr,
+        sync::LazyLock,
     },
 };
 
@@ -27,16 +27,13 @@ mod logexpmath;
 /// including error codes, from which the name (Balancer Fixed Point).
 pub struct Bfp(U256);
 
-lazy_static! {
-    static ref ONE_18: U256 = U256::exp10(18);
-    static ref ONE_18_BIGINT: BigInt = u256_to_big_int(&ONE_18);
-    static ref ZERO: Bfp = Bfp(U256::zero());
-    static ref EPSILON: Bfp = Bfp(U256::one());
-    static ref ONE: Bfp = Bfp(*ONE_18);
-    static ref TWO: Bfp = Bfp(*ONE_18 * 2);
-    static ref FOUR: Bfp = Bfp(*ONE_18 * 4);
-    static ref MAX_POW_RELATIVE_ERROR: Bfp = Bfp(10000_usize.into());
-}
+static ONE_18: LazyLock<U256> = LazyLock::new(|| U256::exp10(18));
+static ONE_18_BIGINT: LazyLock<BigInt> = LazyLock::new(|| u256_to_big_int(&ONE_18));
+static ZERO: LazyLock<Bfp> = LazyLock::new(|| Bfp(U256::zero()));
+static ONE: LazyLock<Bfp> = LazyLock::new(|| Bfp(*ONE_18));
+static TWO: LazyLock<Bfp> = LazyLock::new(|| Bfp(*ONE_18 * 2));
+static FOUR: LazyLock<Bfp> = LazyLock::new(|| Bfp(*ONE_18 * 4));
+static MAX_POW_RELATIVE_ERROR: LazyLock<Bfp> = LazyLock::new(|| Bfp(10000_usize.into()));
 
 impl From<usize> for Bfp {
     fn from(num: usize) -> Self {
@@ -223,6 +220,8 @@ mod tests {
         num::{BigInt, One, Zero},
     };
 
+    static EPSILON: LazyLock<Bfp> = LazyLock::new(|| Bfp(U256::one()));
+
     #[test]
     fn parsing() {
         assert_eq!("1".parse::<Bfp>().unwrap(), Bfp::one());