2019-05-30 15:18:48 -07:00
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//! This account contains the current cluster fees
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//!
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use crate::account::Account;
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use crate::account_utils::State;
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use crate::fee_calculator::FeeCalculator;
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use crate::syscall;
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use bincode::serialized_size;
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/// fees account pubkey
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const ID: [u8; 32] = [
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6, 167, 211, 138, 69, 218, 104, 33, 3, 92, 89, 173, 16, 89, 109, 253, 49, 97, 98, 165, 87, 222,
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119, 112, 253, 90, 76, 184, 0, 0, 0, 0,
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];
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2019-06-06 19:27:49 -07:00
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crate::solana_name_id!(ID, "Sysca11Fees11111111111111111111111111111111");
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2019-05-30 15:18:48 -07:00
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#[repr(C)]
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#[derive(Serialize, Deserialize, Debug, Default)]
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pub struct Fees {
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pub fee_calculator: FeeCalculator,
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}
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impl Fees {
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pub fn from(account: &Account) -> Option<Self> {
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account.state().ok()
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}
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pub fn to(&self, account: &mut Account) -> Option<()> {
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account.set_state(self).ok()
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}
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pub fn size_of() -> usize {
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serialized_size(&Fees::default()).unwrap() as usize
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}
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}
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pub fn create_account(lamports: u64) -> Account {
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Account::new(lamports, Fees::size_of(), &syscall::id())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_fees_create_account() {
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let lamports = 42;
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let account = create_account(lamports);
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let fees = Fees::from(&account).unwrap();
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assert_eq!(
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fees.fee_calculator.lamports_per_signature,
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FeeCalculator::default().lamports_per_signature
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);
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}
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}
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