Contracts: Stabilize APIs (#3384)

Remove `#[unstable]` on `call_v2`, `instantiate_v2`,
`lock_delegate_dependency` and `unlock_delegate_dependency`.
See ink! integrations: 
- call_v2: use-ink/ink#2077
- instantiate_v2: <TODO>
- lock/unlock dependency: use-ink/ink#2076

prdoc/pr_3384.prdoc

@@ -0,0 +1,14 @@
+# 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: "[pallet_contracts] stabilize `call_v2`, `instantiate_v2`, `lock_dependency` and `unlock_dependency`"
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      These APIs are currently unstable and are being stabilized in this PR.
+      Note: `add_delegate_dependency` and `remove_delegate_dependency` have been renamed to `lock_dependency` and `unlock_dependency` respectively.
+
+crates:
+  - name: pallet-contracts-uapi
+  - name: pallet-contracts

substrate/frame/contracts/fixtures/contracts/call.rs

@@ -35,11 +35,13 @@ pub extern "C" fn call() {
 	);
 
 	// Call the callee
-	api::call_v1(
+	api::call_v2(
 		uapi::CallFlags::empty(),
 		callee_addr,
-		0u64,                // How much gas to devote for the execution. 0 = all.
-		&0u64.to_le_bytes(), // value transferred to the contract.
+		0u64,                // How much ref_time to devote for the execution. 0 = all.
+		0u64,                // How much proof_size to devote for the execution. 0 = all.
+		None,                // No deposit limit.
+		&0u64.to_le_bytes(), // Value transferred to the contract.
 		callee_input,
 		None,
 	)

substrate/frame/contracts/fixtures/contracts/call_return_code.rs

@@ -38,11 +38,13 @@ pub extern "C" fn call() {
 	);
 
 	// Call the callee
-	let err_code = match api::call_v1(
+	let err_code = match api::call_v2(
 		uapi::CallFlags::empty(),
 		callee_addr,
-		0u64,                  // How much gas to devote for the execution. 0 = all.
-		&100u64.to_le_bytes(), // value transferred to the contract.
+		0u64,                  // How much ref_time to devote for the execution. 0 = all.
+		0u64,                  // How much proof_size to devote for the execution. 0 = all.
+		None,                  // No deposit limit.
+		&100u64.to_le_bytes(), // Value transferred to the contract.
 		input,
 		None,
 	) {

substrate/frame/contracts/fixtures/contracts/call_runtime_and_call.rs

@@ -39,11 +39,13 @@ pub extern "C" fn call() {
 	api::call_runtime(call).unwrap();
 
 	// Call the callee
-	api::call_v1(
+	api::call_v2(
 		uapi::CallFlags::empty(),
 		callee_addr,
-		0u64,                // How much gas to devote for the execution. 0 = all.
-		&0u64.to_le_bytes(), // value transferred to the contract.
+		0u64,                // How much ref_time to devote for the execution. 0 = all.
+		0u64,                // How much proof_size to devote for the execution. 0 = all.
+		None,                // No deposit limit.
+		&0u64.to_le_bytes(), // Value transferred to the contract.
 		callee_input,
 		None,
 	)

substrate/frame/contracts/fixtures/contracts/call_with_limit.rs

@@ -38,7 +38,6 @@ pub extern "C" fn call() {
 		forwarded_input: [u8],
 	);
 
-	#[allow(deprecated)]
 	api::call_v2(
 		uapi::CallFlags::empty(),
 		callee_addr,

substrate/frame/contracts/fixtures/contracts/caller_contract.rs

@@ -40,7 +40,6 @@ pub extern "C" fn call() {
 	let reverted_input = [1u8, 34, 51, 68, 85, 102, 119];
 
 	// Fail to deploy the contract since it returns a non-zero exit status.
-	#[allow(deprecated)]
 	let res = api::instantiate_v2(
 		code_hash,
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
@@ -55,7 +54,6 @@ pub extern "C" fn call() {
 	assert!(matches!(res, Err(ReturnErrorCode::CalleeReverted)));
 
 	// Fail to deploy the contract due to insufficient ref_time weight.
-	#[allow(deprecated)]
 	let res = api::instantiate_v2(
 		code_hash, 1u64, // too little ref_time weight
 		0u64, // How much proof_size weight to devote for the execution. 0 = all.
@@ -65,7 +63,6 @@ pub extern "C" fn call() {
 	assert!(matches!(res, Err(ReturnErrorCode::CalleeTrapped)));
 
 	// Fail to deploy the contract due to insufficient proof_size weight.
-	#[allow(deprecated)]
 	let res = api::instantiate_v2(
 		code_hash, 0u64, // How much ref_time weight to devote for the execution. 0 = all.
 		1u64, // Too little proof_size weight
@@ -78,7 +75,6 @@ pub extern "C" fn call() {
 	let mut callee = [0u8; 32];
 	let callee = &mut &mut callee[..];
 
-	#[allow(deprecated)]
 	api::instantiate_v2(
 		code_hash,
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
@@ -94,7 +90,6 @@ pub extern "C" fn call() {
 	assert_eq!(callee.len(), 32);
 
 	// Call the new contract and expect it to return failing exit code.
-	#[allow(deprecated)]
 	let res = api::call_v2(
 		uapi::CallFlags::empty(),
 		callee,
@@ -108,11 +103,10 @@ pub extern "C" fn call() {
 	assert!(matches!(res, Err(ReturnErrorCode::CalleeReverted)));
 
 	// Fail to call the contract due to insufficient ref_time weight.
-	#[allow(deprecated)]
 	let res = api::call_v2(
 		uapi::CallFlags::empty(),
 		callee,
-		1u64, // too little ref_time weight
+		1u64, // Too little ref_time weight.
 		0u64, // How much proof_size weight to devote for the execution. 0 = all.
 		None, // No deposit limit.
 		&value,
@@ -122,7 +116,6 @@ pub extern "C" fn call() {
 	assert!(matches!(res, Err(ReturnErrorCode::CalleeTrapped)));
 
 	// Fail to call the contract due to insufficient proof_size weight.
-	#[allow(deprecated)]
 	let res = api::call_v2(
 		uapi::CallFlags::empty(),
 		callee,
@@ -137,7 +130,6 @@ pub extern "C" fn call() {
 
 	// Call the contract successfully.
 	let mut output = [0u8; 4];
-	#[allow(deprecated)]
 	api::call_v2(
 		uapi::CallFlags::empty(),
 		callee,

substrate/frame/contracts/fixtures/contracts/chain_extension_temp_storage.rs

@@ -50,11 +50,13 @@ pub extern "C" fn call() {
 		output!(addr, [0u8; 32], api::address,);
 
 		// call self
-		api::call_v1(
+		api::call_v2(
 			uapi::CallFlags::ALLOW_REENTRY,
 			addr,
-			0u64,                // How much gas to devote for the execution. 0 = all.
-			&0u64.to_le_bytes(), // value transferred to the contract.
+			0u64,                // How much ref_time to devote for the execution. 0 = all.
+			0u64,                // How much proof_size to devote for the execution. 0 = all.
+			None,                // No deposit limit.
+			&0u64.to_le_bytes(), // Value transferred to the contract.
 			input,
 			None,
 		)

substrate/frame/contracts/fixtures/contracts/create_storage_and_call.rs

@@ -40,14 +40,13 @@ pub extern "C" fn call() {
 	api::set_storage(buffer, &[1u8; 4]);
 
 	// Call the callee
-	#[allow(deprecated)]
 	api::call_v2(
 		uapi::CallFlags::empty(),
 		callee,
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
 		0u64, // How much proof_size weight to devote for the execution. 0 = all.
 		Some(deposit_limit),
-		&0u64.to_le_bytes(), // value transferred to the contract.
+		&0u64.to_le_bytes(), // Value transferred to the contract.
 		input,
 		None,
 	)

substrate/frame/contracts/fixtures/contracts/create_storage_and_instantiate.rs

@@ -40,7 +40,6 @@ pub extern "C" fn call() {
 	let mut address = [0u8; 32];
 	let address = &mut &mut address[..];
 
-	#[allow(deprecated)]
 	api::instantiate_v2(
 		code_hash,
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.

substrate/frame/contracts/fixtures/contracts/destroy_and_transfer.rs

@@ -34,7 +34,6 @@ pub extern "C" fn deploy() {
 	let address = &mut &mut address[..];
 	let salt = [71u8, 17u8];
 
-	#[allow(deprecated)]
 	api::instantiate_v2(
 		code_hash,
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.
@@ -60,7 +59,6 @@ pub extern "C" fn call() {
 	api::get_storage(&ADDRESS_KEY, callee_addr).unwrap();
 
 	// Calling the destination contract with non-empty input data should fail.
-	#[allow(deprecated)]
 	let res = api::call_v2(
 		uapi::CallFlags::empty(),
 		callee_addr,
@@ -74,7 +72,6 @@ pub extern "C" fn call() {
 	assert!(matches!(res, Err(uapi::ReturnErrorCode::CalleeTrapped)));
 
 	// Call the destination contract regularly, forcing it to self-destruct.
-	#[allow(deprecated)]
 	api::call_v2(
 		uapi::CallFlags::empty(),
 		callee_addr,

substrate/frame/contracts/fixtures/contracts/instantiate_return_code.rs

@@ -31,7 +31,6 @@ pub extern "C" fn call() {
 	input!(buffer, 36, code_hash: [u8; 32],);
 	let input = &buffer[32..];
 
-	#[allow(deprecated)]
 	let err_code = match api::instantiate_v2(
 		code_hash,
 		0u64, // How much ref_time weight to devote for the execution. 0 = all.

substrate/frame/contracts/fixtures/contracts/add_remove_delegate_dependency.rs → substrate/frame/contracts/fixtures/contracts/locking_delegate_dependency.rs

@@ -15,7 +15,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! This contract tests the behavior of adding / removing delegate_dependencies when delegate
+//! This contract tests the behavior of locking / unlocking delegate_dependencies when delegate
 //! calling into a contract.
 #![no_std]
 #![no_main]
@@ -34,15 +34,13 @@ fn load_input(delegate_call: bool) {
 	);
 
 	match action {
-		// 1 = Add delegate dependency
+		// 1 = Lock delegate dependency
 		1 => {
-			#[allow(deprecated)]
-			api::add_delegate_dependency(code_hash);
+			api::lock_delegate_dependency(code_hash);
 		},
-		// 2 = Remove delegate dependency
+		// 2 = Unlock delegate dependency
 		2 => {
-			#[allow(deprecated)]
-			api::remove_delegate_dependency(code_hash);
+			api::unlock_delegate_dependency(code_hash);
 		},
 		// 3 = Terminate
 		3 => {

substrate/frame/contracts/fixtures/contracts/reentrance_count_call.rs

@@ -42,11 +42,13 @@ pub extern "C" fn call() {
 	if expected_reentrance_count != 5 {
 		let count = (expected_reentrance_count + 1).to_le_bytes();
 
-		api::call_v1(
+		api::call_v2(
 			uapi::CallFlags::ALLOW_REENTRY,
 			addr,
-			0u64,                // How much gas to devote for the execution. 0 = all.
-			&0u64.to_le_bytes(), // value transferred to the contract.
+			0u64,                // How much ref_time to devote for the execution. 0 = all.
+			0u64,                // How much proof_size to devote for the execution. 0 = all.
+			None,                // No deposit limit.
+			&0u64.to_le_bytes(), // Value transferred to the contract.
 			&count,
 			None,
 		)

substrate/frame/contracts/fixtures/contracts/self_destruct.rs

@@ -37,10 +37,12 @@ pub extern "C" fn call() {
 
 	if !input.is_empty() {
 		output!(addr, [0u8; 32], api::address,);
-		api::call_v1(
+		api::call_v2(
 			uapi::CallFlags::ALLOW_REENTRY,
 			addr,
-			0u64,                // How much gas to devote for the execution. 0 = all.
+			0u64,                // How much ref_time to devote for the execution. 0 = all.
+			0u64,                // How much proof_size to devote for the execution. 0 = all.
+			None,                // No deposit limit.
 			&0u64.to_le_bytes(), // Value to transfer.
 			&[0u8; 0],
 			None,

substrate/frame/contracts/src/benchmarking/mod.rs

@@ -895,7 +895,7 @@ benchmarks! {
 				},
 				ImportedFunction {
 					module: "seal0",
-					name: "add_delegate_dependency",
+					name: "lock_delegate_dependency",
 					params: vec![ValueType::I32],
 					return_type: None,
 				}
@@ -2402,7 +2402,7 @@ benchmarks! {
 	}: call(origin, instance.addr, 0u32.into(), Weight::MAX, None, vec![])
 
 	#[pov_mode = Measured]
-	add_delegate_dependency {
+	lock_delegate_dependency {
 		let r in 0 .. T::MaxDelegateDependencies::get();
 		let code_hashes = (0..r)
 			.map(|i| {
@@ -2420,7 +2420,7 @@ benchmarks! {
 			memory: Some(ImportedMemory::max::<T>()),
 			imported_functions: vec![ImportedFunction {
 				module: "seal0",
-				name: "add_delegate_dependency",
+				name: "lock_delegate_dependency",
 				params: vec![ValueType::I32],
 				return_type: None,
 			}],
@@ -2440,7 +2440,7 @@ benchmarks! {
 		let origin = RawOrigin::Signed(instance.caller.clone());
 	}: call(origin, instance.addr, 0u32.into(), Weight::MAX, None, vec![])
 
-	remove_delegate_dependency {
+	unlock_delegate_dependency {
 		let r in 0 .. T::MaxDelegateDependencies::get();
 		let code_hashes = (0..r)
 			.map(|i| {
@@ -2459,12 +2459,12 @@ benchmarks! {
 			memory: Some(ImportedMemory::max::<T>()),
 			imported_functions: vec![ImportedFunction {
 				module: "seal0",
-				name: "remove_delegate_dependency",
+				name: "unlock_delegate_dependency",
 				params: vec![ValueType::I32],
 				return_type: None,
 			}, ImportedFunction {
 				module: "seal0",
-				name: "add_delegate_dependency",
+				name: "lock_delegate_dependency",
 				params: vec![ValueType::I32],
 				return_type: None
 			}],

substrate/frame/contracts/src/exec.rs

@@ -348,20 +348,20 @@ pub trait Ext: sealing::Sealed {
 	/// - [`Error::<T>::MaxDelegateDependenciesReached`]
 	/// - [`Error::<T>::CannotAddSelfAsDelegateDependency`]
 	/// - [`Error::<T>::DelegateDependencyAlreadyExists`]
-	fn add_delegate_dependency(
+	fn lock_delegate_dependency(
 		&mut self,
 		code_hash: CodeHash<Self::T>,
 	) -> Result<(), DispatchError>;
 
 	/// Removes a delegate dependency from [`ContractInfo`]'s `delegate_dependencies` field.
 	///
-	/// This is the counterpart of [`Self::add_delegate_dependency`]. It decreases the reference
-	/// count and refunds the deposit that was charged by [`Self::add_delegate_dependency`].
+	/// This is the counterpart of [`Self::lock_delegate_dependency`]. It decreases the reference
+	/// count and refunds the deposit that was charged by [`Self::lock_delegate_dependency`].
 	///
 	/// # Errors
 	///
 	/// - [`Error::<T>::DelegateDependencyNotFound`]
-	fn remove_delegate_dependency(
+	fn unlock_delegate_dependency(
 		&mut self,
 		code_hash: &CodeHash<Self::T>,
 	) -> Result<(), DispatchError>;
@@ -1554,7 +1554,7 @@ where
 		});
 	}
 
-	fn add_delegate_dependency(
+	fn lock_delegate_dependency(
 		&mut self,
 		code_hash: CodeHash<Self::T>,
 	) -> Result<(), DispatchError> {
@@ -1565,22 +1565,22 @@ where
 		let code_info = CodeInfoOf::<T>::get(code_hash).ok_or(Error::<T>::CodeNotFound)?;
 		let deposit = T::CodeHashLockupDepositPercent::get().mul_ceil(code_info.deposit());
 
-		info.add_delegate_dependency(code_hash, deposit)?;
+		info.lock_delegate_dependency(code_hash, deposit)?;
 		Self::increment_refcount(code_hash)?;
 		frame
 			.nested_storage
 			.charge_deposit(frame.account_id.clone(), StorageDeposit::Charge(deposit));
 		Ok(())
 	}
 
-	fn remove_delegate_dependency(
+	fn unlock_delegate_dependency(
 		&mut self,
 		code_hash: &CodeHash<Self::T>,
 	) -> Result<(), DispatchError> {
 		let frame = self.top_frame_mut();
 		let info = frame.contract_info.get(&frame.account_id);
 
-		let deposit = info.remove_delegate_dependency(code_hash)?;
+		let deposit = info.unlock_delegate_dependency(code_hash)?;
 		Self::decrement_refcount(*code_hash);
 		frame
 			.nested_storage