gmsol_store/ops/
execution_fee.rs

1use anchor_lang::prelude::*;
2use typed_builder::TypedBuilder;
3
4use crate::CoreError;
5
6/// Transfer execution fee operation.
7#[derive(TypedBuilder)]
8pub(crate) struct TransferExecutionFeeOperation<'a, 'info> {
9    payment: AccountInfo<'info>,
10    payer: AccountInfo<'info>,
11    execution_lamports: u64,
12    system_program: AccountInfo<'info>,
13    #[builder(default)]
14    signer_seeds: Option<&'a [&'a [u8]]>,
15}
16
17impl TransferExecutionFeeOperation<'_, '_> {
18    pub(crate) fn execute(self) -> Result<()> {
19        use anchor_lang::system_program::{transfer, Transfer};
20
21        if self.execution_lamports != 0 {
22            let ctx = CpiContext::new(
23                self.system_program,
24                Transfer {
25                    from: self.payer,
26                    to: self.payment,
27                },
28            );
29            if let Some(seeds) = self.signer_seeds {
30                transfer(ctx.with_signer(&[seeds]), self.execution_lamports)?;
31            } else {
32                transfer(ctx, self.execution_lamports)?;
33            }
34        }
35
36        Ok(())
37    }
38}
39
40/// Pay execution fee operation.
41#[derive(TypedBuilder)]
42pub(crate) struct PayExecutionFeeOperation<'info> {
43    payer: AccountInfo<'info>,
44    receiver: AccountInfo<'info>,
45    execution_lamports: u64,
46}
47
48impl PayExecutionFeeOperation<'_> {
49    pub(crate) fn execute(self) -> Result<()> {
50        let rent = Rent::get()?;
51        let remaining_lamports = self
52            .payer
53            .lamports()
54            .saturating_sub(self.execution_lamports);
55        require_gte!(
56            remaining_lamports,
57            rent.minimum_balance(self.payer.data_len()),
58            CoreError::NotEnoughExecutionFee,
59        );
60
61        let amount = self.execution_lamports;
62        if amount != 0 {
63            msg!("paying execution fee: {}", amount);
64            self.payer.sub_lamports(amount)?;
65            self.receiver.add_lamports(amount)?;
66        }
67
68        Ok(())
69    }
70}
gmsol_store/ops/execution_fee.rs

gmsol_store/ops/
execution_fee.rs
