From fa33251d0b93ca2ff6a2ad6d3d1605852857dca4 Mon Sep 17 00:00:00 2001
From: Reed <3893871+dharit-tan@users.noreply.github.com>
Date: Thu, 15 Feb 2024 19:27:35 -0500
Subject: [PATCH] Add priority fee ixs to purchase txs (#7613)

---
 .../src/typed-routes/solana/solanaRelayChecks.ts    |  2 ++
 .../libs/src/services/solana/SolanaWeb3Manager.ts   | 13 ++++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/packages/identity-service/src/typed-routes/solana/solanaRelayChecks.ts b/packages/identity-service/src/typed-routes/solana/solanaRelayChecks.ts
index 32a68e4470f..47feba7e982 100644
--- a/packages/identity-service/src/typed-routes/solana/solanaRelayChecks.ts
+++ b/packages/identity-service/src/typed-routes/solana/solanaRelayChecks.ts
@@ -39,6 +39,7 @@ const PAYMENT_ROUTER_PROGRAM_ID: string = config.get(
 )
 const JUPITER_AGGREGATOR_V6_PROGRAM_ID =
   'JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4'
+const COMPUTE_BUDGET_PROGRAM_ID = 'ComputeBudget111111111111111111111111111111'
 
 const audioMintAddress: string = config.get('solanaMintAddress')
 const usdcMintAddress: string = config.get('solanaUSDCMintAddress')
@@ -440,6 +441,7 @@ export const assertRelayAllowedInstructions = async (
       case PAYMENT_ROUTER_PROGRAM_ID:
       case MEMO_PROGRAM_ID:
       case MEMO_V2_PROGRAM_ID:
+      case COMPUTE_BUDGET_PROGRAM_ID:
         // All instructions of these programs are allowed
         break
       default:
diff --git a/packages/libs/src/services/solana/SolanaWeb3Manager.ts b/packages/libs/src/services/solana/SolanaWeb3Manager.ts
index 85916214927..e85cea9b245 100644
--- a/packages/libs/src/services/solana/SolanaWeb3Manager.ts
+++ b/packages/libs/src/services/solana/SolanaWeb3Manager.ts
@@ -10,7 +10,8 @@ import {
   PublicKey,
   LAMPORTS_PER_SOL,
   TransactionInstruction,
-  Transaction
+  Transaction,
+  ComputeBudgetProgram
 } from '@solana/web3.js'
 import * as solanaWeb3 from '@solana/web3.js'
 import BN from 'bn.js'
@@ -84,6 +85,10 @@ const SOL_PER_LAMPORT = 0.000000001
 // Generous default connection confirmation timeout to better cope with RPC congestion
 const DEFAULT_CONNECTION_CONFIRMATION_TIMEOUT_MS = 180 * 1000
 
+const priorityFeeInstruction = ComputeBudgetProgram.setComputeUnitPrice({
+  microLamports: 100000 // micro lamports
+})
+
 export type SolanaWeb3Config = {
   //  the RPC endpoint to make requests against
   solanaClusterEndpoint: string
@@ -584,8 +589,9 @@ export class SolanaWeb3Manager {
       programId: MEMO_PROGRAM_ID,
       data: Buffer.from(data)
     })
+
     return await this.transactionHandler.handleTransaction({
-      instructions: [...instructions, memoInstruction],
+      instructions: [...instructions, memoInstruction, priorityFeeInstruction],
       skipPreflight: true,
       feePayerOverride: this.feePayerKey
     })
@@ -710,7 +716,8 @@ export class SolanaWeb3Manager {
     const instructions = [
       transferInstruction,
       paymentRouterInstruction,
-      memoInstruction
+      memoInstruction,
+      priorityFeeInstruction
     ]
     return instructions
   }