remove pallet::getter usage from pallet-timestamp (paritytech#3374)

this pr is a part of paritytech#3326

---------

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: Bastian Köcher <git@kchr.de>

cumulus/test/runtime/src/lib.rs

@@ -66,7 +66,7 @@ use frame_system::{
 pub use pallet_balances::Call as BalancesCall;
 pub use pallet_glutton::Call as GluttonCall;
 pub use pallet_sudo::Call as SudoCall;
-pub use pallet_timestamp::Call as TimestampCall;
+pub use pallet_timestamp::{Call as TimestampCall, Now};
 #[cfg(any(feature = "std", test))]
 pub use sp_runtime::BuildStorage;
 pub use sp_runtime::{Perbill, Permill};
@@ -499,7 +499,7 @@ impl_runtime_apis! {
 
 	impl crate::GetLastTimestamp<Block> for Runtime {
 		fn get_last_timestamp() -> u64 {
-			Timestamp::now()
+			Now::<Runtime>::get()
 		}
 	}
 

polkadot/runtime/test-runtime/src/lib.rs

@@ -53,6 +53,7 @@ use frame_support::{
 };
 use pallet_grandpa::{fg_primitives, AuthorityId as GrandpaId};
 use pallet_session::historical as session_historical;
+use pallet_timestamp::Now;
 use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
 use polkadot_primitives::{
 	slashing, AccountId, AccountIndex, Balance, BlockNumber, CandidateEvent, CandidateHash,
@@ -1186,7 +1187,7 @@ sp_api::impl_runtime_apis! {
 
 	impl crate::GetLastTimestamp<Block> for Runtime {
 		fn get_last_timestamp() -> u64 {
-			Timestamp::now()
+			Now::<Runtime>::get()
 		}
 	}
 

prdoc/pr_3374.prdoc

@@ -0,0 +1,13 @@
+# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
+# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json
+
+title: removed `pallet::getter` from `pallet-timestamp`
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      This PR removes all the `pallet::getter` usages from `pallet-timestamp`, and updates depdendant runtimes accordingly.
+      The syntax `StorageItem::<T, I>::get()` should be used instead.
+
+crates: 
+  - name: pallet-timestamp

substrate/frame/election-provider-multi-phase/test-staking-e2e/src/lib.rs

@@ -22,6 +22,7 @@ pub(crate) const LOG_TARGET: &str = "tests::e2e-epm";
 
 use frame_support::{assert_err, assert_noop, assert_ok};
 use mock::*;
+use pallet_timestamp::Now;
 use sp_core::Get;
 use sp_runtime::Perbill;
 
@@ -46,7 +47,7 @@ fn log_current_time() {
 		Session::current_index(),
 		Staking::current_era(),
 		ElectionProviderMultiPhase::current_phase(),
-		Timestamp::now()
+		Now::<Runtime>::get()
 	);
 }
 
@@ -209,7 +210,7 @@ fn continuous_slashes_below_offending_threshold() {
 			// failed due to election minimum score.
 			if start_next_active_era(pool_state.clone()).is_err() {
 				assert!(ElectionProviderMultiPhase::current_phase().is_emergency());
-				break
+				break;
 			}
 
 			active_validator_set = Session::validators();

substrate/frame/timestamp/src/benchmarking.rs

@@ -25,7 +25,7 @@ use frame_support::{ensure, traits::OnFinalize};
 use frame_system::RawOrigin;
 use sp_storage::TrackedStorageKey;
 
-use crate::Pallet as Timestamp;
+use crate::{Now, Pallet as Timestamp};
 
 const MAX_TIME: u32 = 100;
 
@@ -42,7 +42,7 @@ benchmarks! {
 		});
 	}: _(RawOrigin::None, t.into())
 	verify {
-		ensure!(Timestamp::<T>::now() == t.into(), "Time was not set.");
+		ensure!(Now::<T>::get() == t.into(), "Time was not set.");
 	}
 
 	on_finalize {

substrate/frame/timestamp/src/lib.rs

@@ -202,7 +202,6 @@ pub mod pallet {
 
 	/// The current time for the current block.
 	#[pallet::storage]
-	#[pallet::getter(fn now)]
 	pub type Now<T: Config> = StorageValue<_, T::Moment, ValueQuery>;
 
 	/// Whether the timestamp has been updated in this block.
@@ -261,7 +260,7 @@ pub mod pallet {
 		pub fn set(origin: OriginFor<T>, #[pallet::compact] now: T::Moment) -> DispatchResult {
 			ensure_none(origin)?;
 			assert!(!DidUpdate::<T>::exists(), "Timestamp must be updated only once in the block");
-			let prev = Self::now();
+			let prev = Now::<T>::get();
 			assert!(
 				prev.is_zero() || now >= prev + T::MinimumPeriod::get(),
 				"Timestamp must increment by at least <MinimumPeriod> between sequential blocks"
@@ -296,7 +295,7 @@ pub mod pallet {
 				.expect("Timestamp inherent data must be provided");
 			let data = (*inherent_data).saturated_into::<T::Moment>();
 
-			let next_time = cmp::max(data, Self::now() + T::MinimumPeriod::get());
+			let next_time = cmp::max(data, Now::<T>::get() + T::MinimumPeriod::get());
 			Some(Call::set { now: next_time })
 		}
 
@@ -317,7 +316,7 @@ pub mod pallet {
 				.expect("Timestamp inherent data not correctly encoded")
 				.expect("Timestamp inherent data must be provided");
 
-			let minimum = (Self::now() + T::MinimumPeriod::get()).saturated_into::<u64>();
+			let minimum = (Now::<T>::get() + T::MinimumPeriod::get()).saturated_into::<u64>();
 			if t > *(data + MAX_TIMESTAMP_DRIFT_MILLIS) {
 				Err(InherentError::TooFarInFuture)
 			} else if t < minimum {
@@ -339,7 +338,7 @@ impl<T: Config> Pallet<T> {
 	/// NOTE: if this function is called prior to setting the timestamp,
 	/// it will return the timestamp of the previous block.
 	pub fn get() -> T::Moment {
-		Self::now()
+		Now::<T>::get()
 	}
 
 	/// Set the timestamp to something in particular. Only used for tests.
@@ -356,7 +355,7 @@ impl<T: Config> Time for Pallet<T> {
 	type Moment = T::Moment;
 
 	fn now() -> Self::Moment {
-		Self::now()
+		Now::<T>::get()
 	}
 }
 
@@ -367,7 +366,7 @@ impl<T: Config> UnixTime for Pallet<T> {
 	fn now() -> core::time::Duration {
 		// now is duration since unix epoch in millisecond as documented in
 		// `sp_timestamp::InherentDataProvider`.
-		let now = Self::now();
+		let now = Now::<T>::get();
 		sp_std::if_std! {
 			if now == T::Moment::zero() {
 				log::error!(

substrate/frame/timestamp/src/tests.rs

@@ -25,7 +25,7 @@ fn timestamp_works() {
 	new_test_ext().execute_with(|| {
 		crate::Now::<Test>::put(46);
 		assert_ok!(Timestamp::set(RuntimeOrigin::none(), 69));
-		assert_eq!(Timestamp::now(), 69);
+		assert_eq!(crate::Now::<Test>::get(), 69);
 		assert_eq!(Some(69), get_captured_moment());
 	});
 }