Binance DD Code Snippets

3.1.interoperability-interface.ts

// Creates Instruction layout for syncing state
function createInstructionData(index: number) {
  const dataLayout = BufferLayout.struct([BufferLayout.u32('instruction')]);
  const data = Buffer.alloc(dataLayout.span);
  dataLayout.encode({ instruction: index }, data);
  return data;
}

// Creates synchronize state instruction
function createSynchronizeProgramInstruction(source: PublicKey, target: PublicKey) {
  const instruction1 = new TransactionInstruction({
    keys: [
      { pubkey: source, isSigner: false, isWritable: false },
      { pubkey: target, isSigner: false, isWritable: false }
    ],
    programId: new PublicKey(SYNC_PROGRAM_ID),
    data: createInstructionData(0)
  });
}