71 lines
1.9 KiB
Rust
71 lines
1.9 KiB
Rust
//! Current cluster fees.
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//!
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//! The _fees sysvar_ provides access to the [`Fees`] type, which contains the
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//! current [`FeeCalculator`].
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//!
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//! [`Fees`] implements [`Sysvar::get`] and can be loaded efficiently without
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//! passing the sysvar account ID to the program.
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//!
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//! This sysvar is deprecated and will not be available in the future.
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//! Transaction fees should be determined with the [`getFeeForMessage`] RPC
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//! method. For additional context see the [Comprehensive Compute Fees
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//! proposal][ccf].
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//!
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//! [`getFeeForMessage`]: https://docs.solana.com/developing/clients/jsonrpc-api#getfeeformessage
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//! [ccf]: https://docs.solana.com/proposals/comprehensive-compute-fees
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//!
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//! See also the Solana [documentation on the fees sysvar][sdoc].
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//!
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//! [sdoc]: https://docs.solana.com/developing/runtime-facilities/sysvars#fees
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#![allow(deprecated)]
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use {
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crate::{
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fee_calculator::FeeCalculator, impl_sysvar_get, program_error::ProgramError, sysvar::Sysvar,
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},
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solana_sdk_macro::CloneZeroed,
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};
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crate::declare_deprecated_sysvar_id!("SysvarFees111111111111111111111111111111111", Fees);
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/// Transaction fees.
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#[deprecated(
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since = "1.9.0",
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note = "Please do not use, will no longer be available in the future"
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)]
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#[repr(C)]
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#[derive(Serialize, Deserialize, Debug, CloneZeroed, Default, PartialEq, Eq)]
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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 new(fee_calculator: &FeeCalculator) -> Self {
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#[allow(deprecated)]
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Self {
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fee_calculator: *fee_calculator,
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}
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}
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}
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impl Sysvar for Fees {
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impl_sysvar_get!(sol_get_fees_sysvar);
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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_clone() {
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let fees = Fees {
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fee_calculator: FeeCalculator {
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lamports_per_signature: 1,
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},
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};
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let cloned_fees = fees.clone();
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assert_eq!(cloned_fees, fees);
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}
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}
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