sablier_thread_program/instructions/thread_kickoff.rs
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317
use std::{
collections::hash_map::DefaultHasher,
hash::{Hash, Hasher},
str::FromStr,
};
use anchor_lang::prelude::*;
use chrono::DateTime;
use sablier_cron::Schedule;
use sablier_network_program::state::{Worker, WorkerAccount};
use sablier_utils::{
pyth::{self, PriceUpdateV2},
thread::Trigger,
};
use crate::{constants::*, errors::*, state::*};
/// Accounts required by the `thread_kickoff` instruction.
#[derive(Accounts)]
pub struct ThreadKickoff<'info> {
/// The signatory.
#[account(mut)]
pub signatory: Signer<'info>,
/// The thread to kickoff.
#[account(
mut,
seeds = [
SEED_THREAD,
thread.authority.as_ref(),
thread.id.as_slice(),
thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
],
bump = thread.bump,
constraint = !thread.paused @ SablierError::ThreadPaused,
constraint = thread.next_instruction.is_none() @ SablierError::ThreadBusy,
)]
pub thread: Account<'info, Thread>,
/// The worker.
#[account(address = worker.pubkey())]
pub worker: Account<'info, Worker>,
}
pub fn handler(ctx: Context<ThreadKickoff>) -> Result<()> {
// Get accounts.
let signatory = &mut ctx.accounts.signatory;
let thread = &mut ctx.accounts.thread;
let clock = Clock::get()?;
match &thread.trigger {
Trigger::Account {
address,
offset,
size,
} => {
// Verify proof that account data has been updated.
match ctx.remaining_accounts.first() {
None => {
return Err(SablierError::TriggerConditionFailed.into());
}
Some(account_info) => {
// Verify the remaining account is the account this thread is listening for.
require!(
address.eq(account_info.key),
SablierError::TriggerConditionFailed
);
// Begin computing the data hash of this account.
let mut hasher = DefaultHasher::new();
let data = &account_info.try_borrow_data()?;
let offset = *offset as usize;
let range_end = offset + *size as usize;
if data.len().gt(&range_end) {
data[offset..range_end].hash(&mut hasher);
} else {
data[offset..].hash(&mut hasher)
}
let data_hash = hasher.finish();
// Verify the data hash is different than the prior data hash.
if let Some(exec_context) = thread.exec_context {
match exec_context.trigger_context {
TriggerContext::Account {
data_hash: prior_data_hash,
} => {
require!(
data_hash.ne(&prior_data_hash),
SablierError::TriggerConditionFailed
)
}
_ => return Err(SablierError::InvalidThreadState.into()),
}
}
// Set a new exec context with the new data hash and slot number.
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Account { data_hash },
})
}
}
}
Trigger::Cron {
schedule,
skippable,
} => {
// Get the reference timestamp for calculating the thread's scheduled target timestamp.
let reference_timestamp = match thread.exec_context {
None => thread.created_at.unix_timestamp,
Some(exec_context) => match exec_context.trigger_context {
TriggerContext::Cron { started_at } => started_at,
_ => return Err(SablierError::InvalidThreadState.into()),
},
};
// Verify the current timestamp is greater than or equal to the threshold timestamp.
let threshold_timestamp = next_timestamp(reference_timestamp, schedule)
.ok_or(SablierError::TriggerConditionFailed)?;
msg!(
"Threshold timestamp: {}, clock timestamp: {}",
threshold_timestamp,
clock.unix_timestamp
);
require!(
clock.unix_timestamp.ge(&threshold_timestamp),
SablierError::TriggerConditionFailed
);
// If the schedule is marked as skippable, set the started_at of the exec context to be the current timestamp.
// Otherwise, the exec context must iterate through each scheduled kickoff moment.
let started_at = if *skippable {
clock.unix_timestamp
} else {
threshold_timestamp
};
// Set the exec context.
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Cron { started_at },
});
}
Trigger::Now => {
// Set the exec context.
require!(
thread.exec_context.is_none(),
SablierError::InvalidThreadState
);
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Now,
});
}
Trigger::Slot { slot } => {
require!(clock.slot.ge(slot), SablierError::TriggerConditionFailed);
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Slot { started_at: *slot },
});
}
Trigger::Epoch { epoch } => {
require!(clock.epoch.ge(epoch), SablierError::TriggerConditionFailed);
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Epoch { started_at: *epoch },
})
}
Trigger::Timestamp { unix_ts } => {
require!(
clock.unix_timestamp.ge(unix_ts),
SablierError::TriggerConditionFailed
);
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Timestamp {
started_at: *unix_ts,
},
})
}
Trigger::Pyth {
feed_id,
equality,
limit,
} => {
// Verify price limit has been reached.
match ctx.remaining_accounts.first() {
None => {
return Err(SablierError::TriggerConditionFailed.into());
}
Some(account_info) => {
require_keys_eq!(
*account_info.owner,
pyth::ID,
SablierError::TriggerConditionFailed
);
const STALENESS_THRESHOLD: u64 = 60; // staleness threshold in seconds
let price_update =
PriceUpdateV2::try_deserialize(&mut account_info.data.borrow().as_ref())?;
let current_price = price_update.get_price_no_older_than(
&Clock::get()?,
STALENESS_THRESHOLD,
feed_id,
)?;
match equality {
Equality::GreaterThanOrEqual => {
require!(
current_price.price.ge(limit),
SablierError::TriggerConditionFailed
);
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Pyth {
price: current_price.price,
},
});
}
Equality::LessThanOrEqual => {
require!(
current_price.price.le(limit),
SablierError::TriggerConditionFailed
);
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Pyth {
price: current_price.price,
},
});
}
}
}
}
}
Trigger::Periodic { delay } => {
// Get the reference timestamp for calculating the thread's scheduled target timestamp.
let reference_timestamp = match thread.exec_context {
None => thread.created_at.unix_timestamp,
Some(exec_context) => match exec_context.trigger_context {
TriggerContext::Periodic { started_at } => started_at,
_ => return Err(SablierError::InvalidThreadState.into()),
},
};
// Verify the current timestamp is greater than or equal to the threshold timestamp.
let threshold_timestamp = reference_timestamp + *delay as i64;
msg!(
"Threshold timestamp: {}, clock timestamp: {}",
threshold_timestamp,
clock.unix_timestamp
);
require!(
clock.unix_timestamp.ge(&threshold_timestamp),
SablierError::TriggerConditionFailed
);
// Set the exec context.
thread.exec_context = Some(ExecContext {
exec_index: 0,
execs_since_reimbursement: 0,
execs_since_slot: 0,
last_exec_at: clock.slot,
trigger_context: TriggerContext::Periodic {
started_at: threshold_timestamp,
},
});
}
}
// If we make it here, the trigger is active. Update the next instruction and be done.
if let Some(kickoff_instruction) = thread.instructions.first() {
thread.next_instruction = Some(kickoff_instruction.clone());
}
// Realloc the thread account
thread.realloc_account()?;
// Reimburse signatory for transaction fee.
thread.sub_lamports(TRANSACTION_BASE_FEE_REIMBURSEMENT)?;
signatory.add_lamports(TRANSACTION_BASE_FEE_REIMBURSEMENT)?;
Ok(())
}
fn next_timestamp(after: i64, schedule: &str) -> Option<i64> {
Schedule::from_str(schedule)
.unwrap()
.next_after(&DateTime::from_timestamp(after, 0).unwrap())
.take()
.map(|datetime| datetime.timestamp())
}