use {
crate::{exchange_instruction::*, exchange_state::*, faucet},
log::*,
num_derive::{FromPrimitive, ToPrimitive},
serde_derive::Serialize,
solana_metrics::inc_new_counter_info,
solana_sdk::{
account::{ReadableAccount, WritableAccount},
decode_error::DecodeError,
instruction::InstructionError,
keyed_account::KeyedAccount,
process_instruction::InvokeContext,
program_utils::limited_deserialize,
pubkey::Pubkey,
},
std::cmp,
thiserror::Error,
};
#[derive(Error, Debug, Serialize, Clone, PartialEq, FromPrimitive, ToPrimitive)]
pub enum ExchangeError {
#[error("Signer does not own account")]
SignerDoesNotOwnAccount,
#[error("Signer does not own order")]
SignerDoesNotOwnOrder,
#[error("The From account balance is too low")]
FromAccountBalanceTooLow,
#[error("Attmept operation on mismatched tokens")]
TokenMismatch,
#[error("From trade balance is too low")]
FromTradeBalanceTooLow,
#[error("Serialization failed")]
SerializeFailed,
}
impl<T> DecodeError<T> for ExchangeError {
fn type_of() -> &'static str {
"ExchangeError"
}
}
pub struct ExchangeProcessor {}
impl ExchangeProcessor {
#[allow(clippy::needless_pass_by_value)]
fn map_to_invalid_arg(err: std::boxed::Box<bincode::ErrorKind>) -> InstructionError {
warn!("Deserialize failed, not a valid state: {:?}", err);
InstructionError::InvalidArgument
}
fn is_account_unallocated(data: &[u8]) -> Result<(), InstructionError> {
let state: ExchangeState = bincode::deserialize(data).map_err(Self::map_to_invalid_arg)?;
if let ExchangeState::Unallocated = state {
Ok(())
} else {
error!("New account is already in use");
Err(InstructionError::InvalidAccountData)
}
}
fn deserialize_account(data: &[u8]) -> Result<TokenAccountInfo, InstructionError> {
let state: ExchangeState = bincode::deserialize(data).map_err(Self::map_to_invalid_arg)?;
if let ExchangeState::Account(account) = state {
Ok(account)
} else {
error!("Not a valid account");
Err(InstructionError::InvalidAccountData)
}
}
fn deserialize_order(data: &[u8]) -> Result<OrderInfo, InstructionError> {
let state: ExchangeState = bincode::deserialize(data).map_err(Self::map_to_invalid_arg)?;
if let ExchangeState::Trade(info) = state {
Ok(info)
} else {
error!("Not a valid trade");
Err(InstructionError::InvalidAccountData)
}
}
fn serialize(state: &ExchangeState, data: &mut [u8]) -> Result<(), InstructionError> {
let writer = std::io::BufWriter::new(data);
match bincode::serialize_into(writer, state) {
Ok(_) => Ok(()),
Err(e) => {
error!("Serialize failed: {:?}", e);
Err(ExchangeError::SerializeFailed.into())
}
}
}
fn trade_to_token_account(trade: &OrderInfo) -> TokenAccountInfo {
let token = match trade.side {
OrderSide::Ask => trade.pair.Quote,
OrderSide::Bid => trade.pair.Base,
};
let mut account = TokenAccountInfo::default().owner(&trade.owner);
account.tokens[token] = trade.tokens_settled;
account
}
fn calculate_swap(
scaler: u64,
to_trade: &mut OrderInfo,
from_trade: &mut OrderInfo,
profit_account: &mut TokenAccountInfo,
) -> Result<(), InstructionError> {
if to_trade.tokens == 0 || from_trade.tokens == 0 {
error!("Inactive Trade, balance is zero");
return Err(InstructionError::InvalidArgument);
}
if to_trade.price == 0 || from_trade.price == 0 {
error!("Inactive Trade, price is zero");
return Err(InstructionError::InvalidArgument);
}
trace!("tt {} ft {}", to_trade.tokens, from_trade.tokens);
trace!("tp {} fp {}", to_trade.price, from_trade.price);
let max_to_secondary = to_trade.tokens * to_trade.price / scaler;
let max_to_primary = from_trade.tokens * scaler / from_trade.price;
trace!("mtp {} mts {}", max_to_primary, max_to_secondary);
let max_primary = cmp::min(max_to_primary, to_trade.tokens);
let max_secondary = cmp::min(max_to_secondary, from_trade.tokens);
trace!("mp {} ms {}", max_primary, max_secondary);
let primary_tokens = if max_secondary < max_primary {
max_secondary * scaler / from_trade.price
} else {
max_primary
};
let secondary_tokens = if max_secondary < max_primary {
max_secondary
} else {
max_primary * to_trade.price / scaler
};
if primary_tokens == 0 || secondary_tokens == 0 {
error!("Trade quantities to low to be fulfilled");
return Err(InstructionError::InvalidArgument);
}
trace!("pt {} st {}", primary_tokens, secondary_tokens);
let primary_cost = cmp::max(primary_tokens, secondary_tokens * scaler / to_trade.price);
let secondary_cost = cmp::max(secondary_tokens, primary_tokens * from_trade.price / scaler);
trace!("pc {} sc {}", primary_cost, secondary_cost);
let primary_profit = primary_cost - primary_tokens;
let secondary_profit = secondary_cost - secondary_tokens;
trace!("pp {} sp {}", primary_profit, secondary_profit);
let primary_token = to_trade.pair.Base;
let secondary_token = from_trade.pair.Quote;
if to_trade.tokens < primary_cost {
error!("Not enough tokens in to account");
return Err(InstructionError::InvalidArgument);
}
if from_trade.tokens < secondary_cost {
error!("Not enough tokens in from account");
return Err(InstructionError::InvalidArgument);
}
to_trade.tokens -= primary_cost;
to_trade.tokens_settled += secondary_tokens;
from_trade.tokens -= secondary_cost;
from_trade.tokens_settled += primary_tokens;
profit_account.tokens[primary_token] += primary_profit;
profit_account.tokens[secondary_token] += secondary_profit;
Ok(())
}
fn do_account_request(keyed_accounts: &[KeyedAccount]) -> Result<(), InstructionError> {
const OWNER_INDEX: usize = 0;
const NEW_ACCOUNT_INDEX: usize = 1;
if keyed_accounts.len() < 2 {
error!("Not enough accounts");
return Err(InstructionError::InvalidArgument);
}
Self::is_account_unallocated(keyed_accounts[NEW_ACCOUNT_INDEX].try_account_ref()?.data())?;
Self::serialize(
&ExchangeState::Account(
TokenAccountInfo::default()
.owner(keyed_accounts[OWNER_INDEX].unsigned_key())
.tokens(100_000, 100_000, 100_000, 100_000),
),
&mut keyed_accounts[NEW_ACCOUNT_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)
}
fn do_transfer_request(
keyed_accounts: &[KeyedAccount],
token: Token,
tokens: u64,
) -> Result<(), InstructionError> {
const OWNER_INDEX: usize = 0;
const TO_ACCOUNT_INDEX: usize = 1;
const FROM_ACCOUNT_INDEX: usize = 2;
if keyed_accounts.len() < 3 {
error!("Not enough accounts");
return Err(InstructionError::InvalidArgument);
}
let mut to_account =
Self::deserialize_account(keyed_accounts[TO_ACCOUNT_INDEX].try_account_ref()?.data())?;
if &faucet::id() == keyed_accounts[FROM_ACCOUNT_INDEX].unsigned_key() {
to_account.tokens[token] += tokens;
} else {
let state: ExchangeState =
bincode::deserialize(keyed_accounts[FROM_ACCOUNT_INDEX].try_account_ref()?.data())
.map_err(Self::map_to_invalid_arg)?;
match state {
ExchangeState::Account(mut from_account) => {
if &from_account.owner != keyed_accounts[OWNER_INDEX].unsigned_key() {
error!("Signer does not own from account");
return Err(ExchangeError::SignerDoesNotOwnAccount.into());
}
if from_account.tokens[token] < tokens {
error!("From account balance too low");
return Err(ExchangeError::FromAccountBalanceTooLow.into());
}
from_account.tokens[token] -= tokens;
to_account.tokens[token] += tokens;
Self::serialize(
&ExchangeState::Account(from_account),
&mut keyed_accounts[FROM_ACCOUNT_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
}
ExchangeState::Trade(mut from_trade) => {
if &from_trade.owner != keyed_accounts[OWNER_INDEX].unsigned_key() {
error!("Signer does not own from account");
return Err(ExchangeError::SignerDoesNotOwnAccount.into());
}
let from_token = match from_trade.side {
OrderSide::Ask => from_trade.pair.Quote,
OrderSide::Bid => from_trade.pair.Base,
};
if token != from_token {
error!("Trade to transfer from does not hold correct token");
return Err(ExchangeError::TokenMismatch.into());
}
if from_trade.tokens_settled < tokens {
error!("From trade balance too low");
return Err(ExchangeError::FromTradeBalanceTooLow.into());
}
from_trade.tokens_settled -= tokens;
to_account.tokens[token] += tokens;
Self::serialize(
&ExchangeState::Trade(from_trade),
&mut keyed_accounts[FROM_ACCOUNT_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
}
_ => {
error!("Not a valid from account for transfer");
return Err(InstructionError::InvalidArgument);
}
}
}
Self::serialize(
&ExchangeState::Account(to_account),
&mut keyed_accounts[TO_ACCOUNT_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)
}
fn do_order_request(
keyed_accounts: &[KeyedAccount],
info: &OrderRequestInfo,
) -> Result<(), InstructionError> {
const OWNER_INDEX: usize = 0;
const ORDER_INDEX: usize = 1;
const ACCOUNT_INDEX: usize = 2;
if keyed_accounts.len() < 3 {
error!("Not enough accounts");
return Err(InstructionError::InvalidArgument);
}
Self::is_account_unallocated(keyed_accounts[ORDER_INDEX].try_account_ref()?.data())?;
let mut account =
Self::deserialize_account(keyed_accounts[ACCOUNT_INDEX].try_account_ref_mut()?.data())?;
if &account.owner != keyed_accounts[OWNER_INDEX].unsigned_key() {
error!("Signer does not own account");
return Err(ExchangeError::SignerDoesNotOwnAccount.into());
}
let from_token = match info.side {
OrderSide::Ask => info.pair.Base,
OrderSide::Bid => info.pair.Quote,
};
if account.tokens[from_token] < info.tokens {
error!("From token balance is too low");
return Err(ExchangeError::FromAccountBalanceTooLow.into());
}
if let Err(e) = check_trade(info.side, info.tokens, info.price) {
bincode::serialize(&e).unwrap();
}
account.tokens[from_token] -= info.tokens;
inc_new_counter_info!("exchange_processor-trades", 1);
Self::serialize(
&ExchangeState::Trade(OrderInfo {
owner: *keyed_accounts[OWNER_INDEX].unsigned_key(),
side: info.side,
pair: info.pair,
tokens: info.tokens,
price: info.price,
tokens_settled: 0,
}),
&mut keyed_accounts[ORDER_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
Self::serialize(
&ExchangeState::Account(account),
&mut keyed_accounts[ACCOUNT_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)
}
fn do_order_cancellation(keyed_accounts: &[KeyedAccount]) -> Result<(), InstructionError> {
const OWNER_INDEX: usize = 0;
const ORDER_INDEX: usize = 1;
if keyed_accounts.len() < 2 {
error!("Not enough accounts");
return Err(InstructionError::InvalidArgument);
}
let order = Self::deserialize_order(keyed_accounts[ORDER_INDEX].try_account_ref()?.data())?;
if &order.owner != keyed_accounts[OWNER_INDEX].unsigned_key() {
error!("Signer does not own order");
return Err(ExchangeError::SignerDoesNotOwnOrder.into());
}
let token = match order.side {
OrderSide::Ask => order.pair.Base,
OrderSide::Bid => order.pair.Quote,
};
let mut account = TokenAccountInfo::default().owner(&order.owner);
account.tokens[token] = order.tokens;
account.tokens[token] += order.tokens_settled;
Self::serialize(
&ExchangeState::Account(account),
&mut keyed_accounts[ORDER_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)
}
fn do_swap_request(keyed_accounts: &[KeyedAccount]) -> Result<(), InstructionError> {
const TO_ORDER_INDEX: usize = 1;
const FROM_ORDER_INDEX: usize = 2;
const PROFIT_ACCOUNT_INDEX: usize = 3;
if keyed_accounts.len() < 4 {
error!("Not enough accounts");
return Err(InstructionError::InvalidArgument);
}
let mut to_order =
Self::deserialize_order(keyed_accounts[TO_ORDER_INDEX].try_account_ref()?.data())?;
let mut from_order =
Self::deserialize_order(keyed_accounts[FROM_ORDER_INDEX].try_account_ref()?.data())?;
let mut profit_account = Self::deserialize_account(
keyed_accounts[PROFIT_ACCOUNT_INDEX]
.try_account_ref()?
.data(),
)?;
if to_order.side != OrderSide::Ask {
error!("To trade is not a To");
return Err(InstructionError::InvalidArgument);
}
if from_order.side != OrderSide::Bid {
error!("From trade is not a From");
return Err(InstructionError::InvalidArgument);
}
if to_order.pair != from_order.pair {
error!("Mismatched token pairs");
return Err(InstructionError::InvalidArgument);
}
if to_order.side == from_order.side {
error!("Matching trade sides");
return Err(InstructionError::InvalidArgument);
}
if let Err(e) =
Self::calculate_swap(SCALER, &mut to_order, &mut from_order, &mut profit_account)
{
error!(
"Swap calculation failed from {} for {} to {} for {}",
from_order.tokens, from_order.price, to_order.tokens, to_order.price,
);
return Err(e);
}
inc_new_counter_info!("exchange_processor-swaps", 1);
if to_order.tokens == 0 {
Self::serialize(
&ExchangeState::Account(Self::trade_to_token_account(&from_order)),
&mut keyed_accounts[TO_ORDER_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
} else {
Self::serialize(
&ExchangeState::Trade(to_order),
&mut keyed_accounts[TO_ORDER_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
}
if from_order.tokens == 0 {
Self::serialize(
&ExchangeState::Account(Self::trade_to_token_account(&from_order)),
&mut keyed_accounts[FROM_ORDER_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
} else {
Self::serialize(
&ExchangeState::Trade(from_order),
&mut keyed_accounts[FROM_ORDER_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)?;
}
Self::serialize(
&ExchangeState::Account(profit_account),
&mut keyed_accounts[PROFIT_ACCOUNT_INDEX]
.try_account_ref_mut()?
.data_as_mut_slice(),
)
}
}
pub fn process_instruction(
_program_id: &Pubkey,
data: &[u8],
invoke_context: &mut dyn InvokeContext,
) -> Result<(), InstructionError> {
let keyed_accounts = invoke_context.get_keyed_accounts()?;
solana_logger::setup();
match limited_deserialize::<ExchangeInstruction>(data)? {
ExchangeInstruction::AccountRequest => {
ExchangeProcessor::do_account_request(keyed_accounts)
}
ExchangeInstruction::TransferRequest(token, tokens) => {
ExchangeProcessor::do_transfer_request(keyed_accounts, token, tokens)
}
ExchangeInstruction::OrderRequest(info) => {
ExchangeProcessor::do_order_request(keyed_accounts, &info)
}
ExchangeInstruction::OrderCancellation => {
ExchangeProcessor::do_order_cancellation(keyed_accounts)
}
ExchangeInstruction::SwapRequest => ExchangeProcessor::do_swap_request(keyed_accounts),
}
}
#[cfg(test)]
mod test {
use {
super::*,
crate::{exchange_instruction, id},
solana_runtime::{bank::Bank, bank_client::BankClient},
solana_sdk::{
client::SyncClient,
genesis_config::create_genesis_config,
message::Message,
signature::{Keypair, Signer},
system_instruction,
},
std::mem,
};
#[allow(clippy::too_many_arguments)]
fn try_calc(
scaler: u64,
primary_tokens: u64,
primary_price: u64,
secondary_tokens: u64,
secondary_price: u64,
primary_tokens_expect: u64,
secondary_tokens_expect: u64,
primary_tokens_settled_expect: u64,
secondary_tokens_settled_expect: u64,
profit_account_tokens: Tokens,
) -> Result<(), InstructionError> {
trace!(
"Swap {} for {} to {} for {}",
primary_tokens,
primary_price,
secondary_tokens,
secondary_price,
);
let mut to_trade = OrderInfo::default();
let mut from_trade = OrderInfo::default().side(OrderSide::Bid);
let mut profit_account = TokenAccountInfo::default();
to_trade.tokens = primary_tokens;
to_trade.price = primary_price;
from_trade.tokens = secondary_tokens;
from_trade.price = secondary_price;
ExchangeProcessor::calculate_swap(
scaler,
&mut to_trade,
&mut from_trade,
&mut profit_account,
)?;
trace!(
"{:?} {:?} {:?} {:?}\n{:?}\n{:?}\n{:?}\n{:?}",
to_trade.tokens,
primary_tokens_expect,
from_trade.tokens,
secondary_tokens_expect,
primary_tokens_settled_expect,
secondary_tokens_settled_expect,
profit_account.tokens,
profit_account_tokens
);
assert_eq!(to_trade.tokens, primary_tokens_expect);
assert_eq!(from_trade.tokens, secondary_tokens_expect);
assert_eq!(to_trade.tokens_settled, primary_tokens_settled_expect);
assert_eq!(from_trade.tokens_settled, secondary_tokens_settled_expect);
assert_eq!(profit_account.tokens, profit_account_tokens);
Ok(())
}
#[test]
#[rustfmt::skip]
fn test_calculate_swap() {
solana_logger::setup();
try_calc(1, 50, 2, 50, 1, 0, 0, 50, 50, Tokens::new( 0, 0, 0, 0)).unwrap_err();
try_calc(1, 50, 1, 0, 1, 0, 0, 50, 50, Tokens::new( 0, 0, 0, 0)).unwrap_err();
try_calc(1, 0, 1, 50, 1, 0, 0, 50, 50, Tokens::new( 0, 0, 0, 0)).unwrap_err();
try_calc(1, 50, 1, 50, 0, 0, 0, 50, 50, Tokens::new( 0, 0, 0, 0)).unwrap_err();
try_calc(1, 50, 0, 50, 1, 0, 0, 50, 50, Tokens::new( 0, 0, 0, 0)).unwrap_err();
try_calc(1, 1, 2, 2, 3, 1, 2, 0, 0, Tokens::new( 0, 0, 0, 0)).unwrap_err();
try_calc(1, 50, 1, 50, 1, 0, 0, 50, 50, Tokens::new( 0, 0, 0, 0)).unwrap();
try_calc(1, 1, 2, 3, 3, 0, 0, 2, 1, Tokens::new( 0, 1, 0, 0)).unwrap();
try_calc(1, 2, 2, 3, 3, 1, 0, 2, 1, Tokens::new( 0, 1, 0, 0)).unwrap();
try_calc(1, 3, 2, 3, 3, 2, 0, 2, 1, Tokens::new( 0, 1, 0, 0)).unwrap();
try_calc(1, 3, 2, 6, 3, 1, 0, 4, 2, Tokens::new( 0, 2, 0, 0)).unwrap();
try_calc(1000, 1, 2000, 3, 3000, 0, 0, 2, 1, Tokens::new( 0, 1, 0, 0)).unwrap();
try_calc(1, 3, 2, 7, 3, 1, 1, 4, 2, Tokens::new( 0, 2, 0, 0)).unwrap();
try_calc(1000, 3000, 333, 1000, 500, 0, 1,999, 1998, Tokens::new(1002, 0, 0, 0)).unwrap();
try_calc(1000, 50, 100, 50, 101, 0,45, 5, 49, Tokens::new( 1, 0, 0, 0)).unwrap();
}
fn create_bank(lamports: u64) -> (Bank, Keypair) {
let (genesis_config, mint_keypair) = create_genesis_config(lamports);
let mut bank = Bank::new(&genesis_config);
bank.add_builtin("exchange_program", id(), process_instruction);
(bank, mint_keypair)
}
fn create_client(bank: Bank, mint_keypair: Keypair) -> (BankClient, Keypair) {
let owner = Keypair::new();
let bank_client = BankClient::new(bank);
bank_client
.transfer_and_confirm(42, &mint_keypair, &owner.pubkey())
.unwrap();
(bank_client, owner)
}
fn create_account(client: &BankClient, owner: &Keypair) -> Pubkey {
let new = Keypair::new();
let instruction = system_instruction::create_account(
&owner.pubkey(),
&new.pubkey(),
1,
mem::size_of::<ExchangeState>() as u64,
&id(),
);
client
.send_and_confirm_message(
&[owner, &new],
Message::new(&[instruction], Some(&owner.pubkey())),
)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
new.pubkey()
}
fn create_token_account(client: &BankClient, owner: &Keypair) -> Pubkey {
let new = create_account(client, owner);
let instruction = exchange_instruction::account_request(&owner.pubkey(), &new);
client
.send_and_confirm_instruction(owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
new
}
fn transfer(client: &BankClient, owner: &Keypair, to: &Pubkey, token: Token, tokens: u64) {
let instruction = exchange_instruction::transfer_request(
&owner.pubkey(),
to,
&faucet::id(),
token,
tokens,
);
client
.send_and_confirm_instruction(owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
}
fn trade(
client: &BankClient,
owner: &Keypair,
side: OrderSide,
pair: AssetPair,
from_token: Token,
src_tokens: u64,
trade_tokens: u64,
price: u64,
) -> (Pubkey, Pubkey) {
let trade = create_account(client, owner);
let src = create_token_account(client, owner);
transfer(client, owner, &src, from_token, src_tokens);
let instruction = exchange_instruction::trade_request(
&owner.pubkey(),
&trade,
side,
pair,
trade_tokens,
price,
&src,
);
client
.send_and_confirm_instruction(owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
(trade, src)
}
#[test]
fn test_exchange_new_account() {
solana_logger::setup();
let (bank, mint_keypair) = create_bank(10_000);
let (client, owner) = create_client(bank, mint_keypair);
let new = create_token_account(&client, &owner);
let new_account_data = client.get_account_data(&new).unwrap().unwrap();
assert_eq!(
TokenAccountInfo::default()
.owner(&owner.pubkey())
.tokens(100_000, 100_000, 100_000, 100_000),
ExchangeProcessor::deserialize_account(&new_account_data).unwrap()
);
}
#[test]
fn test_exchange_new_account_not_unallocated() {
solana_logger::setup();
let (bank, mint_keypair) = create_bank(10_000);
let (client, owner) = create_client(bank, mint_keypair);
let new = create_token_account(&client, &owner);
let instruction = exchange_instruction::account_request(&owner.pubkey(), &new);
client
.send_and_confirm_instruction(&owner, instruction)
.expect_err(&format!("{}:{}", line!(), file!()));
}
#[test]
fn test_exchange_new_transfer_request() {
solana_logger::setup();
let (bank, mint_keypair) = create_bank(10_000);
let (client, owner) = create_client(bank, mint_keypair);
let new = create_token_account(&client, &owner);
let instruction = exchange_instruction::transfer_request(
&owner.pubkey(),
&new,
&faucet::id(),
Token::A,
42,
);
client
.send_and_confirm_instruction(&owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
let new_account_data = client.get_account_data(&new).unwrap().unwrap();
assert_eq!(
TokenAccountInfo::default()
.owner(&owner.pubkey())
.tokens(100_042, 100_000, 100_000, 100_000),
ExchangeProcessor::deserialize_account(&new_account_data).unwrap()
);
}
#[test]
fn test_exchange_new_trade_request() {
solana_logger::setup();
let (bank, mint_keypair) = create_bank(10_000);
let (client, owner) = create_client(bank, mint_keypair);
let (trade, src) = trade(
&client,
&owner,
OrderSide::Ask,
AssetPair::default(),
Token::A,
42,
2,
1000,
);
let trade_account_data = client.get_account_data(&trade).unwrap().unwrap();
let src_account_data = client.get_account_data(&src).unwrap().unwrap();
assert_eq!(
OrderInfo {
owner: owner.pubkey(),
side: OrderSide::Ask,
pair: AssetPair::default(),
tokens: 2,
price: 1000,
tokens_settled: 0
},
ExchangeProcessor::deserialize_order(&trade_account_data).unwrap()
);
assert_eq!(
TokenAccountInfo::default()
.owner(&owner.pubkey())
.tokens(100_040, 100_000, 100_000, 100_000),
ExchangeProcessor::deserialize_account(&src_account_data).unwrap()
);
}
#[test]
fn test_exchange_new_swap_request() {
solana_logger::setup();
let (bank, mint_keypair) = create_bank(10_000);
let (client, owner) = create_client(bank, mint_keypair);
let profit = create_token_account(&client, &owner);
let (to_trade, _) = trade(
&client,
&owner,
OrderSide::Ask,
AssetPair::default(),
Token::A,
2,
2,
2000,
);
let (from_trade, _) = trade(
&client,
&owner,
OrderSide::Bid,
AssetPair::default(),
Token::B,
3,
3,
3000,
);
let instruction =
exchange_instruction::swap_request(&owner.pubkey(), &to_trade, &from_trade, &profit);
client
.send_and_confirm_instruction(&owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
let to_trade_account_data = client.get_account_data(&to_trade).unwrap().unwrap();
let from_trade_account_data = client.get_account_data(&from_trade).unwrap().unwrap();
let profit_account_data = client.get_account_data(&profit).unwrap().unwrap();
assert_eq!(
OrderInfo {
owner: owner.pubkey(),
side: OrderSide::Ask,
pair: AssetPair::default(),
tokens: 1,
price: 2000,
tokens_settled: 2,
},
ExchangeProcessor::deserialize_order(&to_trade_account_data).unwrap()
);
assert_eq!(
TokenAccountInfo::default()
.owner(&owner.pubkey())
.tokens(1, 0, 0, 0),
ExchangeProcessor::deserialize_account(&from_trade_account_data).unwrap()
);
assert_eq!(
TokenAccountInfo::default()
.owner(&owner.pubkey())
.tokens(100_000, 100_001, 100_000, 100_000),
ExchangeProcessor::deserialize_account(&profit_account_data).unwrap()
);
}
#[test]
fn test_exchange_trade_to_token_account() {
solana_logger::setup();
let (bank, mint_keypair) = create_bank(10_000);
let (client, owner) = create_client(bank, mint_keypair);
let profit = create_token_account(&client, &owner);
let (to_trade, _) = trade(
&client,
&owner,
OrderSide::Ask,
AssetPair::default(),
Token::A,
3,
3,
2000,
);
let (from_trade, _) = trade(
&client,
&owner,
OrderSide::Bid,
AssetPair::default(),
Token::B,
3,
3,
3000,
);
let instruction =
exchange_instruction::swap_request(&owner.pubkey(), &to_trade, &from_trade, &profit);
client
.send_and_confirm_instruction(&owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
let new = create_token_account(&client, &owner);
let instruction =
exchange_instruction::transfer_request(&owner.pubkey(), &new, &to_trade, Token::B, 1);
client
.send_and_confirm_instruction(&owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
let instruction =
exchange_instruction::transfer_request(&owner.pubkey(), &new, &from_trade, Token::A, 1);
client
.send_and_confirm_instruction(&owner, instruction)
.unwrap_or_else(|_| panic!("{}:{}", line!(), file!()));
let new_account_data = client.get_account_data(&new).unwrap().unwrap();
assert_eq!(
TokenAccountInfo::default()
.owner(&owner.pubkey())
.tokens(100_001, 100_001, 100_000, 100_000),
ExchangeProcessor::deserialize_account(&new_account_data).unwrap()
);
}
}