refactor: remove transfer to save contract size

Author: Riateche

program/rust/src/processor.rs

@@ -17,9 +17,7 @@ use {
     },
     solana_program::{
         entrypoint::ProgramResult,
-        program::invoke,
         pubkey::Pubkey,
-        system_instruction,
         sysvar::slot_history::AccountInfo,
     },
 };
@@ -109,30 +107,15 @@ pub fn process_instruction(
     }
 }
 
-fn reserve_new_price_feed_index<'a>(
-    funding_account: &AccountInfo<'a>,
-    permissions_account: &AccountInfo<'a>,
-    system_program: &AccountInfo<'a>,
-) -> Result<u32, ProgramError> {
+fn reserve_new_price_feed_index(permissions_account: &AccountInfo) -> Result<u32, ProgramError> {
     if permissions_account.data_len() < PermissionAccount::MIN_SIZE_WITH_LAST_FEED_INDEX {
         let new_size = PermissionAccount::MIN_SIZE_WITH_LAST_FEED_INDEX;
         let rent = Rent::get()?;
         let new_minimum_balance = rent.minimum_balance(new_size);
-        let lamports_diff = new_minimum_balance.saturating_sub(permissions_account.lamports());
-        if lamports_diff > 0 {
-            invoke(
-                &system_instruction::transfer(
-                    funding_account.key,
-                    permissions_account.key,
-                    lamports_diff,
-                ),
-                &[
-                    funding_account.clone(),
-                    permissions_account.clone(),
-                    system_program.clone(),
-                ],
-            )?;
-        }
+        pyth_assert(
+            permissions_account.lamports() >= new_minimum_balance,
+            ProgramError::AccountNotRentExempt,
+        )?;
 
         permissions_account.realloc(new_size, true)?;
         let mut header = load_account_as_mut::<AccountHeader>(permissions_account)?;

program/rust/src/processor/add_price.rs

@@ -37,7 +37,6 @@ use {
 // account[1] product account        [writable]
 // account[2] new price account      [writable]
 // account[3] permissions account    [writable]
-// account[4] system program account []
 pub fn add_price(
     program_id: &Pubkey,
     accounts: &[AccountInfo],
@@ -51,12 +50,10 @@ pub fn add_price(
         ProgramError::InvalidArgument,
     )?;
 
-
-    let (funding_account, product_account, price_account, permissions_account, system_program) =
-        match accounts {
-            [x, y, z, p, q] => Ok((x, y, z, p, q)),
-            _ => Err(OracleError::InvalidNumberOfAccounts),
-        }?;
+    let (funding_account, product_account, price_account, permissions_account) = match accounts {
+        [x, y, z, p] => Ok((x, y, z, p)),
+        _ => Err(OracleError::InvalidNumberOfAccounts),
+    }?;
 
     check_valid_funding_account(funding_account)?;
     check_permissioned_funding_account(
@@ -74,10 +71,6 @@ pub fn add_price(
         &cmd_args.header,
     )?;
     check_valid_writable_account(program_id, permissions_account)?;
-    pyth_assert(
-        solana_program::system_program::check_id(system_program.key),
-        OracleError::InvalidSystemAccount.into(),
-    )?;
 
     let mut product_data =
         load_checked::<ProductAccount>(product_account, cmd_args.header.version)?;
@@ -89,8 +82,7 @@ pub fn add_price(
     price_data.product_account = *product_account.key;
     price_data.next_price_account = product_data.first_price_account;
     price_data.min_pub_ = PRICE_ACCOUNT_DEFAULT_MIN_PUB;
-    price_data.feed_index =
-        reserve_new_price_feed_index(funding_account, permissions_account, system_program)?;
+    price_data.feed_index = reserve_new_price_feed_index(permissions_account)?;
     product_data.first_price_account = *price_account.key;
 
     Ok(())

program/rust/src/processor/add_product.rs

@@ -65,7 +65,6 @@ pub fn add_product(
         hdr,
     )?;
 
-
     let mut mapping_data = load_checked::<MappingAccount>(tail_mapping_account, hdr.version)?;
     // The mapping account must have free space to add the product account
     pyth_assert(

program/rust/src/processor/del_product.rs

@@ -68,7 +68,6 @@ pub fn del_product(
         cmd_args,
     )?;
 
-
     {
         let mut mapping_data = load_checked::<MappingAccount>(mapping_account, cmd_args.version)?;
         let product_data = load_checked::<ProductAccount>(product_account, cmd_args.version)?;

program/rust/src/processor/init_price.rs

@@ -55,7 +55,6 @@ pub fn init_price(
         &cmd_args.header,
     )?;
 
-
     let mut price_data = load_checked::<PriceAccount>(price_account, cmd_args.header.version)?;
     pyth_assert(
         price_data.price_type == cmd_args.price_type,

program/rust/src/processor/init_price_feed_index.rs

@@ -28,7 +28,6 @@ use {
 // account[0] funding account        [signer writable]
 // account[1] price account          [writable]
 // account[2] permissions account    [writable]
-// account[3] system program account []
 pub fn init_price_feed_index(
     program_id: &Pubkey,
     accounts: &[AccountInfo],
@@ -41,8 +40,8 @@ pub fn init_price_feed_index(
         ProgramError::InvalidArgument,
     )?;
 
-    let (funding_account, price_account, permissions_account, system_program) = match accounts {
-        [x, y, p, z] => Ok((x, y, p, z)),
+    let (funding_account, price_account, permissions_account) = match accounts {
+        [x, y, p] => Ok((x, y, p)),
         _ => Err(OracleError::InvalidNumberOfAccounts),
     }?;
 
@@ -55,18 +54,13 @@ pub fn init_price_feed_index(
         cmd,
     )?;
     check_valid_writable_account(program_id, permissions_account)?;
-    pyth_assert(
-        solana_program::system_program::check_id(system_program.key),
-        OracleError::InvalidSystemAccount.into(),
-    )?;
 
     let mut price_account_data = load_checked::<PriceAccount>(price_account, cmd.version)?;
     pyth_assert(
         price_account_data.feed_index == 0,
         OracleError::FeedIndexAlreadyInitialized.into(),
     )?;
-    price_account_data.feed_index =
-        reserve_new_price_feed_index(funding_account, permissions_account, system_program)?;
+    price_account_data.feed_index = reserve_new_price_feed_index(permissions_account)?;
 
     Ok(())
 }

program/rust/src/processor/set_min_pub.rs

@@ -51,7 +51,6 @@ pub fn set_min_pub(
         &cmd.header,
     )?;
 
-
     let mut price_account_data = load_checked::<PriceAccount>(price_account, cmd.header.version)?;
     price_account_data.min_pub_ = cmd.minimum_publishers;
 

program/rust/src/processor/upd_permissions.rs

@@ -61,7 +61,6 @@ pub fn upd_permissions(
         OracleError::InvalidSystemAccount.into(),
     )?;
 
-
     // Create PermissionAccount if it doesn't exist
     PermissionAccount::initialize_pda(
         permissions_account,

program/rust/src/processor/upd_product.rs

@@ -47,7 +47,6 @@ pub fn upd_product(
         hdr,
     )?;
 
-
     {
         // Validate that product_account contains the appropriate account header
         let mut _product_data = load_checked::<ProductAccount>(product_account, hdr.version)?;

program/rust/src/tests/mod.rs

@@ -28,6 +28,5 @@ mod test_upd_price_with_validator;
 mod test_upd_product;
 mod test_utils;
 
-
 mod test_twap;
 mod test_upd_price_v2;