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[draft] jito env var tip #3926

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[draft] jito env var tip #3926

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6 changes: 5 additions & 1 deletion rust/chains/hyperlane-sealevel/src/mailbox.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -555,14 +555,18 @@ impl Mailbox for SealevelMailbox {
// If we're using Jito, we need to send a tip to the Jito fee account.
// Otherwise, we need to set the compute unit price.
if self.use_jito() {
let tip: u64 = std::env::var("JITO_TIP_LAMPORTS")
.ok()
.and_then(|s| s.parse::<u64>().ok())
.unwrap_or(PROCESS_DESIRED_PRIORITIZATION_FEE_LAMPORTS_PER_TX);
// The tip is a standalone transfer to a Jito fee account.
// See https://github.com/jito-labs/mev-protos/blob/master/json_rpc/http.md#sendbundle.
instructions.push(solana_sdk::system_instruction::transfer(
&payer.pubkey(),
// A random Jito fee account, taken from the getFeeAccount RPC response:
// https://github.com/jito-labs/mev-protos/blob/master/json_rpc/http.md#gettipaccounts
&solana_sdk::pubkey!("DfXygSm4jCyNCybVYYK6DwvWqjKee8pbDmJGcLWNDXjh"),
PROCESS_DESIRED_PRIORITIZATION_FEE_LAMPORTS_PER_TX,
tip,
));
} else {
instructions.push(ComputeBudgetInstruction::set_compute_unit_price(
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