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This commit is contained in:
Sergio Chouhy
2026-04-03 18:13:24 -03:00
parent 55c75c55ae
commit deae71b09f
9 changed files with 38 additions and 31 deletions
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program_methods/guest/src/bin/clock.rs
+24 -10
View File
@@ -1,3 +1,13 @@
//! Clock Program.
//!
//! A system program that records the current block ID and timestamp into dedicated clock accounts.
//! Three accounts are maintained, updated at different block intervals (every 1, 10, and 50
//! blocks), allowing programs to read recent timestamps at various granularities.
//!
//! This program can only be invoked exclusively by the sequencer as the last transaction in every
//! block. Clock accounts are assigned to the clock program at genesis, so no claiming is required
//! here.
use clock_core::{
CLOCK_01_PROGRAM_ACCOUNT_ID, CLOCK_10_PROGRAM_ACCOUNT_ID, CLOCK_50_PROGRAM_ACCOUNT_ID,
ClockAccountData, Instruction,
@@ -11,14 +21,14 @@ fn update_if_multiple(
pre: AccountWithMetadata,
divisor: u64,
current_block_id: u64,
updated_data: [u8; 16],
updated_data: &[u8],
) -> (AccountWithMetadata, AccountPostState) {
if current_block_id.is_multiple_of(divisor) {
let mut post_account = pre.account.clone();
post_account.data = updated_data
.to_vec()
.try_into()
.expect("16 bytes should fit in account data");
.expect("Clock account data should fit in account data");
(pre, AccountPostState::new(post_account))
} else {
let post = AccountPostState::new(pre.account.clone());
@@ -48,11 +58,15 @@ fn main() {
panic!("Invalid input accounts");
}
let prev_data = ClockAccountData::from_bytes(
pre_01.account.data.clone().into_inner()[..16]
.try_into()
.expect("Clock account data should be 16 bytes"),
);
// Verify all clock accounts are owned by this program (assigned at genesis).
if pre_01.account.program_owner != self_program_id
|| pre_10.account.program_owner != self_program_id
|| pre_50.account.program_owner != self_program_id
{
panic!("Clock accounts must be owned by the clock program");
}
let prev_data = ClockAccountData::from_bytes(&pre_01.account.data.clone().into_inner());
let current_block_id = prev_data
.block_id
.checked_add(1)
@@ -64,9 +78,9 @@ fn main() {
}
.to_bytes();
let (pre_01, post_01) = update_if_multiple(pre_01, 1, current_block_id, updated_data);
let (pre_10, post_10) = update_if_multiple(pre_10, 10, current_block_id, updated_data);
let (pre_50, post_50) = update_if_multiple(pre_50, 50, current_block_id, updated_data);
let (pre_01, post_01) = update_if_multiple(pre_01, 1, current_block_id, &updated_data);
let (pre_10, post_10) = update_if_multiple(pre_10, 10, current_block_id, &updated_data);
let (pre_50, post_50) = update_if_multiple(pre_50, 50, current_block_id, &updated_data);
ProgramOutput::new(
self_program_id,