feat: Add functions to deploy Solana program (#121)

Author: conr2d

frame/solana/src/lib.rs

@@ -113,7 +113,7 @@ pub mod pallet {
 	use parity_scale_codec::Codec;
 	use solana_sdk::{
 		account::Account,
-		clock,
+		bpf_loader, clock,
 		feature_set::FeatureSet,
 		fee_calculator::FeeCalculator,
 		hash::Hash,
@@ -218,6 +218,12 @@ pub mod pallet {
 	#[pallet::origin]
 	pub type Origin = RawOrigin;
 
+	#[pallet::error]
+	pub enum Error<T> {
+		/// Failed to reallocate account data of this length
+		InvalidRealloc,
+	}
+
 	#[pallet::storage]
 	#[pallet::getter(fn slot)]
 	pub type Slot<T: Config> = StorageValue<_, clock::Slot, ValueQuery>;
@@ -328,6 +334,32 @@ pub mod pallet {
 	}
 
 	impl<T: Config> Pallet<T> {
+		pub fn create_account(pubkey: Pubkey, owner: Pubkey, executable: bool) {
+			let who = T::AccountIdConversion::convert(pubkey);
+			<frame_system::Pallet<T>>::inc_sufficients(&who);
+			<AccountMeta<T>>::insert(
+				who,
+				AccountMetadata { owner, executable, rent_epoch: u64::MAX },
+			);
+		}
+
+		pub fn deploy_program(
+			pubkey: Pubkey,
+			data: Vec<u8>,
+			owner: Option<Pubkey>,
+		) -> Result<(), Error<T>> {
+			let program_id = T::AccountIdConversion::convert(pubkey);
+			let owner = owner.unwrap_or(bpf_loader::id());
+			Self::create_account(pubkey, owner, true);
+			if !data.is_empty() {
+				<AccountData<T>>::insert(
+					program_id,
+					BoundedVec::try_from(data.to_vec()).map_err(|_| Error::InvalidRealloc)?,
+				);
+			}
+			Ok(())
+		}
+
 		pub fn get_hash_info_if_valid(
 			hash: &T::Hash,
 			max_age: BlockNumberFor<T>,

frame/solana/src/tests.rs

@@ -85,15 +85,11 @@ fn process_transaction(bank: &Bank<Test>, tx: Transaction) -> Result<()> {
 	bank.load_execute_and_commit_sanitized_transaction(sanitized_tx)
 }
 
-fn deploy_program(program_id: &Pubkey, data: Vec<u8>) {
+fn mock_deploy_program(program_id: &Pubkey, data: Vec<u8>) {
+	<Pallet<Test>>::deploy_program(*program_id, data, None).unwrap();
+
 	let who = AccountIdConversion::convert(*program_id);
-	System::inc_providers(&who);
 	Balances::mint_into(&who, sol_into_balances(1)).unwrap();
-	<AccountMeta<Test>>::insert(
-		&who,
-		AccountMetadata { rent_epoch: u64::MAX, owner: bpf_loader::id(), executable: true },
-	);
-	<AccountData<Test>>::insert(&who, BoundedVec::try_from(data).expect("account data"));
 }
 
 #[test]
@@ -212,7 +208,7 @@ fn spl_token_program_should_work() {
 		let program_data =
 			std::fs::read("tests/example-programs/token/token_program.so").expect("program data");
 
-		deploy_program(&token_program_id, program_data);
+		mock_deploy_program(&token_program_id, program_data);
 
 		let create_account = system_instruction::create_account(
 			&authority.pubkey(),