LSPS5 follow up: Move TimeProvider to utils::time module for better organization

lightning-background-processor/src/lib.rs

@@ -735,7 +735,7 @@ use futures_util::{dummy_waker, OptionalSelector, Selector, SelectorOutput};
 /// # use lightning_background_processor::{process_events_async, GossipSync};
 /// # use core::future::Future;
 /// # use core::pin::Pin;
-/// # use lightning_liquidity::lsps5::service::TimeProvider;
+/// # use lightning_liquidity::utils::time::TimeProvider;
 /// # struct Logger {}
 /// # impl lightning::util::logger::Logger for Logger {
 /// #     fn log(&self, _record: lightning::util::logger::Record) {}
@@ -1401,7 +1401,7 @@ mod tests {
 	use lightning::util::sweep::{OutputSpendStatus, OutputSweeperSync, PRUNE_DELAY_BLOCKS};
 	use lightning::util::test_utils;
 	use lightning::{get_event, get_event_msg};
-	use lightning_liquidity::lsps5::service::DefaultTimeProvider;
+	use lightning_liquidity::utils::time::DefaultTimeProvider;
 	use lightning_liquidity::LiquidityManager;
 	use lightning_persister::fs_store::FilesystemStore;
 	use lightning_rapid_gossip_sync::RapidGossipSync;

lightning-liquidity/src/lib.rs

@@ -70,7 +70,7 @@ pub mod message_queue;
 mod sync;
 #[cfg(test)]
 mod tests;
-mod utils;
+pub mod utils;
 
 pub use manager::{
 	ALiquidityManager, LiquidityClientConfig, LiquidityManager, LiquidityServiceConfig,

lightning-liquidity/src/lsps5/client.rs

@@ -22,9 +22,9 @@ use crate::message_queue::MessageQueue;
 use crate::prelude::{new_hash_map, HashMap};
 use crate::sync::{Arc, Mutex, RwLock};
 use crate::utils::generate_request_id;
+use crate::utils::time::TimeProvider;
 
 use super::msgs::{LSPS5AppName, LSPS5Error, LSPS5WebhookUrl};
-use super::service::TimeProvider;
 
 use bitcoin::secp256k1::PublicKey;
 
@@ -439,9 +439,8 @@ mod tests {
 
 	use super::*;
 	use crate::{
-		lsps0::ser::LSPSRequestId,
-		lsps5::{msgs::SetWebhookResponse, service::DefaultTimeProvider},
-		tests::utils::TestEntropy,
+		lsps0::ser::LSPSRequestId, lsps5::msgs::SetWebhookResponse, tests::utils::TestEntropy,
+		utils::time::DefaultTimeProvider,
 	};
 	use bitcoin::{key::Secp256k1, secp256k1::SecretKey};
 

lightning-liquidity/src/lsps5/service.rs

@@ -20,6 +20,7 @@ use crate::message_queue::MessageQueue;
 use crate::prelude::hash_map::Entry;
 use crate::prelude::*;
 use crate::sync::{Arc, Mutex};
+use crate::utils::time::TimeProvider;
 
 use bitcoin::secp256k1::PublicKey;
 
@@ -54,28 +55,6 @@ struct StoredWebhook {
 	last_notification_sent: HashMap<WebhookNotificationMethod, LSPSDateTime>,
 }
 
-/// Trait defining a time provider for LSPS5 service.
-///
-/// This trait is used to provide the current time for LSPS5 service operations
-/// and to convert between timestamps and durations.
-pub trait TimeProvider {
-	/// Get the current time as a duration since the Unix epoch.
-	fn duration_since_epoch(&self) -> Duration;
-}
-
-/// Default time provider using the system clock.
-#[derive(Clone, Debug)]
-#[cfg(feature = "time")]
-pub struct DefaultTimeProvider;
-
-#[cfg(feature = "time")]
-impl TimeProvider for DefaultTimeProvider {
-	fn duration_since_epoch(&self) -> Duration {
-		use std::time::{SystemTime, UNIX_EPOCH};
-		SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch")
-	}
-}
-
 /// Server-side configuration options for LSPS5 Webhook Registration.
 #[derive(Clone, Debug)]
 pub struct LSPS5ServiceConfig {

lightning-liquidity/src/lsps5/validator.rs

@@ -10,12 +10,12 @@
 //! LSPS5 Validator
 
 use super::msgs::LSPS5ClientError;
-use super::service::TimeProvider;
 
 use crate::alloc::string::ToString;
 use crate::lsps0::ser::LSPSDateTime;
 use crate::lsps5::msgs::WebhookNotification;
 use crate::sync::Mutex;
+use crate::utils::time::TimeProvider;
 
 use lightning::util::message_signing;
 

lightning-liquidity/src/manager.rs

@@ -12,9 +12,7 @@ use crate::lsps0::ser::{
 use crate::lsps0::service::LSPS0ServiceHandler;
 use crate::lsps5::client::{LSPS5ClientConfig, LSPS5ClientHandler};
 use crate::lsps5::msgs::LSPS5Message;
-#[cfg(feature = "time")]
-use crate::lsps5::service::DefaultTimeProvider;
-use crate::lsps5::service::{LSPS5ServiceConfig, LSPS5ServiceHandler, TimeProvider};
+use crate::lsps5::service::{LSPS5ServiceConfig, LSPS5ServiceHandler};
 use crate::message_queue::MessageQueue;
 
 use crate::lsps1::client::{LSPS1ClientConfig, LSPS1ClientHandler};
@@ -27,6 +25,9 @@ use crate::lsps2::msgs::LSPS2Message;
 use crate::lsps2::service::{LSPS2ServiceConfig, LSPS2ServiceHandler};
 use crate::prelude::{new_hash_map, new_hash_set, HashMap, HashSet};
 use crate::sync::{Arc, Mutex, RwLock};
+#[cfg(feature = "time")]
+use crate::utils::time::DefaultTimeProvider;
+use crate::utils::time::TimeProvider;
 
 use lightning::chain::{self, BestBlock, Confirm, Filter, Listen};
 use lightning::ln::channelmanager::{AChannelManager, ChainParameters};

lightning-liquidity/src/utils.rs → lightning-liquidity/src/utils/mod.rs

@@ -1,10 +1,13 @@
+//! Utilities for LSPS5 service.
+
 use alloc::string::String;
 use core::{fmt::Write, ops::Deref};
 
 use lightning::sign::EntropySource;
 
 use crate::lsps0::ser::LSPSRequestId;
 
+/// Converts a human-readable string representation of a short channel ID (SCID)
 pub fn scid_from_human_readable_string(human_readable_scid: &str) -> Result<u64, ()> {
 	let mut parts = human_readable_scid.split('x');
 
@@ -24,6 +27,7 @@ where
 }
 
 #[inline]
+/// Converts a byte slice to a hexadecimal string representation.
 pub fn hex_str(value: &[u8]) -> String {
 	let mut res = String::with_capacity(2 * value.len());
 	for v in value {
@@ -52,3 +56,5 @@ mod tests {
 		assert_eq!(vout_from_scid(scid), vout);
 	}
 }
+
+pub mod time;

lightning-liquidity/src/utils/time.rs

@@ -0,0 +1,25 @@
+//! Utilities for time handling in LSPS5 service.
+
+use core::time::Duration;
+
+/// Trait defining a time provider for LSPS5 service.
+///
+/// This trait is used to provide the current time for LSPS5 service operations
+/// and to convert between timestamps and durations.
+pub trait TimeProvider {
+	/// Get the current time as a duration since the Unix epoch.
+	fn duration_since_epoch(&self) -> Duration;
+}
+
+/// Default time provider using the system clock.
+#[derive(Clone, Debug)]
+#[cfg(feature = "time")]
+pub struct DefaultTimeProvider;
+
+#[cfg(feature = "time")]
+impl TimeProvider for DefaultTimeProvider {
+	fn duration_since_epoch(&self) -> Duration {
+		use std::time::{SystemTime, UNIX_EPOCH};
+		SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch")
+	}
+}

lightning-liquidity/tests/common/mod.rs

@@ -1,14 +1,15 @@
 #![cfg(test)]
 
-use bitcoin::Network;
-use lightning::ln::channelmanager::ChainParameters;
-use lightning_liquidity::lsps5::service::TimeProvider;
+use lightning_liquidity::utils::time::TimeProvider;
 use lightning_liquidity::{LiquidityClientConfig, LiquidityManager, LiquidityServiceConfig};
 
 use lightning::chain::{BestBlock, Filter};
+use lightning::ln::channelmanager::ChainParameters;
 use lightning::ln::functional_test_utils::{Node, TestChannelManager};
 use lightning::util::test_utils::TestKeysInterface;
 
+use bitcoin::Network;
+
 use core::ops::Deref;
 
 use std::sync::Arc;

lightning-liquidity/tests/lsps0_integration_tests.rs

@@ -13,7 +13,8 @@ use lightning_liquidity::lsps1::service::LSPS1ServiceConfig;
 use lightning_liquidity::lsps2::client::LSPS2ClientConfig;
 use lightning_liquidity::lsps2::service::LSPS2ServiceConfig;
 use lightning_liquidity::lsps5::client::LSPS5ClientConfig;
-use lightning_liquidity::lsps5::service::{DefaultTimeProvider, LSPS5ServiceConfig};
+use lightning_liquidity::lsps5::service::LSPS5ServiceConfig;
+use lightning_liquidity::utils::time::DefaultTimeProvider;
 use lightning_liquidity::{LiquidityClientConfig, LiquidityServiceConfig};
 
 use lightning::ln::functional_test_utils::{

lightning-liquidity/tests/lsps2_integration_tests.rs

@@ -12,7 +12,7 @@ use lightning_liquidity::lsps2::event::LSPS2ServiceEvent;
 use lightning_liquidity::lsps2::msgs::LSPS2RawOpeningFeeParams;
 use lightning_liquidity::lsps2::service::LSPS2ServiceConfig;
 use lightning_liquidity::lsps2::utils::is_valid_opening_fee_params;
-use lightning_liquidity::lsps5::service::DefaultTimeProvider;
+use lightning_liquidity::utils::time::DefaultTimeProvider;
 use lightning_liquidity::{LiquidityClientConfig, LiquidityServiceConfig};
 
 use lightning::ln::channelmanager::{InterceptId, MIN_FINAL_CLTV_EXPIRY_DELTA};

lightning-liquidity/tests/lsps5_integration_tests.rs

@@ -17,13 +17,14 @@ use lightning_liquidity::lsps5::msgs::{
 	LSPS5AppName, LSPS5ClientError, LSPS5ProtocolError, LSPS5WebhookUrl, WebhookNotification,
 	WebhookNotificationMethod,
 };
-use lightning_liquidity::lsps5::service::{DefaultTimeProvider, LSPS5ServiceConfig, TimeProvider};
+use lightning_liquidity::lsps5::service::LSPS5ServiceConfig;
 use lightning_liquidity::lsps5::service::{
 	MIN_WEBHOOK_RETENTION_DAYS, PRUNE_STALE_WEBHOOKS_INTERVAL_DAYS,
 };
 use lightning_liquidity::lsps5::validator::{
 	InMemorySignatureStore, LSPS5Validator, SignatureStorageConfig,
 };
+use lightning_liquidity::utils::time::{DefaultTimeProvider, TimeProvider};
 use lightning_liquidity::{LiquidityClientConfig, LiquidityServiceConfig};
 use std::sync::{Arc, RwLock};
 use std::time::{Duration, SystemTime, UNIX_EPOCH};