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tibet_lib.py
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tibet_lib.py
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import asyncio
import os
import sys
import time
import requests
from pathlib import Path
from typing import List
from chia_rs import AugSchemeMPL, PrivateKey
from cdv.cmds.rpc import get_client
from chia.consensus.default_constants import DEFAULT_CONSTANTS
from chia.rpc.full_node_rpc_client import FullNodeRpcClient
from chia.rpc.wallet_rpc_client import WalletRpcClient
from chia.simulator.simulator_full_node_rpc_client import \
SimulatorFullNodeRpcClient
from chia.types.blockchain_format.coin import Coin
from chia.types.blockchain_format.program import INFINITE_COST
from chia.types.blockchain_format.program import Program
try:
from chia.types.blockchain_format.serialized_program import SerializedProgram
except:
from chia.types.blockchain_format.program import SerializedProgram
from chia.types.blockchain_format.sized_bytes import bytes32
from chia.types.coin_spend import make_spend
from chia.types.condition_opcodes import ConditionOpcode
from chia.types.spend_bundle import SpendBundle
from chia.util.bech32m import bech32_decode
from chia.util.bech32m import bech32_encode
from chia.util.bech32m import convertbits
from chia.util.bech32m import decode_puzzle_hash
from chia.util.bech32m import encode_puzzle_hash
from chia.util.condition_tools import conditions_dict_for_solution
from chia.util.condition_tools import conditions_for_solution
from chia.util.config import load_config
from chia.util.hash import std_hash
from chia.util.ints import uint16
from chia.util.ints import uint32
from chia.util.ints import uint64
from chia.wallet.cat_wallet.cat_utils import SpendableCAT
from chia.wallet.cat_wallet.cat_utils import construct_cat_puzzle
from chia.wallet.cat_wallet.cat_utils import get_innerpuzzle_from_puzzle
from chia.wallet.cat_wallet.cat_utils import \
unsigned_spend_bundle_for_spendable_cats
from chia.wallet.derive_keys import master_sk_to_wallet_sk_unhardened
from chia.wallet.lineage_proof import LineageProof
from chia.wallet.cat_wallet.cat_utils import CAT_MOD
from chia.wallet.cat_wallet.cat_wallet import CAT_MOD_HASH
from chia.wallet.puzzles.p2_conditions import puzzle_for_conditions
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
DEFAULT_HIDDEN_PUZZLE_HASH
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
calculate_synthetic_secret_key
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
puzzle_for_pk
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
puzzle_for_synthetic_public_key
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
solution_for_delegated_puzzle
from chia.wallet.puzzles.singleton_top_layer_v1_1 import SINGLETON_LAUNCHER
from chia.wallet.puzzles.singleton_top_layer_v1_1 import \
SINGLETON_LAUNCHER_HASH
from chia.wallet.puzzles.singleton_top_layer_v1_1 import SINGLETON_MOD
from chia.wallet.puzzles.singleton_top_layer_v1_1 import SINGLETON_MOD_HASH
from chia.wallet.puzzles.singleton_top_layer_v1_1 import generate_launcher_coin
from chia.wallet.puzzles.singleton_top_layer_v1_1 import \
launch_conditions_and_coinsol
from chia.wallet.puzzles.singleton_top_layer_v1_1 import \
lineage_proof_for_coinsol
from chia.wallet.puzzles.singleton_top_layer_v1_1 import puzzle_for_singleton
from chia.wallet.puzzles.singleton_top_layer_v1_1 import solution_for_singleton
from chia.wallet.puzzles.tails import GenesisById
from chia.wallet.sign_coin_spends import sign_coin_spends
from chia.wallet.trading.offer import OFFER_MOD
from chia.wallet.trading.offer import OFFER_MOD_HASH
from chia.wallet.trading.offer import Offer
from chia.wallet.util.puzzle_compression import compress_object_with_puzzles
from chia.wallet.util.puzzle_compression import decompress_object_with_puzzles
from chia.wallet.util.puzzle_compression import lowest_best_version
from chia_rs import run_chia_program
from clvm.casts import int_to_bytes
from clvm import SExp
from leaflet_client import LeafletFullNodeRpcClient
from cic import build_merkle_tree
from chia.full_node.bundle_tools import simple_solution_generator
from chia.full_node.mempool_check_conditions import get_name_puzzle_conditions
MEMPOOL_MIN_FEE_INCREASE = uint64(10000000)
ROUTER_MIN_FEE = 42000000000
def program_from_hex(h: str) -> Program:
return SerializedProgram.from_bytes(bytes.fromhex(h)).to_program()
def load_clvm_hex(
filename
) -> Program:
clvm_hex = open(filename, "r").read().strip()
assert len(clvm_hex) != 0
return program_from_hex(clvm_hex)
ROUTER_MOD: Program = load_clvm_hex("clvm/router.clvm.hex")
LIQUIDITY_TAIL_MOD: Program = load_clvm_hex("clvm/liquidity_tail.clvm.hex")
P2_SINGLETON_FLASHLOAN_MOD: Program = load_clvm_hex(
"clvm/p2_singleton_flashloan.clvm.hex")
P2_MERKLE_TREE_MODIFIED_MOD: Program = load_clvm_hex(
"clvm/p2_merkle_tree_modified.clvm.hex")
PAIR_INNER_PUZZLE_MOD: Program = load_clvm_hex(
"clvm/pair_inner_puzzle.clvm.hex")
ADD_LIQUIDITY_MOD: Program = load_clvm_hex("clvm/add_liquidity.clvm.hex")
REMOVE_LIQUIDITY_MOD: Program = load_clvm_hex("clvm/remove_liquidity.clvm.hex")
SWAP_MOD: Program = load_clvm_hex("clvm/swap.clvm.hex")
ROUTER_MOD_HASH = ROUTER_MOD.get_tree_hash()
LIQUIDITY_TAIL_MOD_HASH: Program = LIQUIDITY_TAIL_MOD.get_tree_hash()
P2_SINGLETON_FLASHLOAN_MOD_HASH: Program = P2_SINGLETON_FLASHLOAN_MOD.get_tree_hash()
P2_MERKLE_TREE_MODIFIED_MOD_HASH: Program = P2_MERKLE_TREE_MODIFIED_MOD.get_tree_hash()
PAIR_INNER_PUZZLE_MOD_HASH: Program = PAIR_INNER_PUZZLE_MOD.get_tree_hash()
ADD_LIQUIDITY_PUZZLE = ADD_LIQUIDITY_MOD.curry(
CAT_MOD_HASH,
LIQUIDITY_TAIL_MOD_HASH
)
ADD_LIQUIDITY_PUZZLE_HASH = ADD_LIQUIDITY_PUZZLE.get_tree_hash()
REMOVE_LIQUIDITY_PUZZLE = REMOVE_LIQUIDITY_MOD.curry(
CAT_MOD_HASH,
LIQUIDITY_TAIL_MOD_HASH
)
REMOVE_LIQUIDITY_PUZZLE_HASH = REMOVE_LIQUIDITY_PUZZLE.get_tree_hash()
SWAP_PUZZLE = SWAP_MOD.curry(993)
SWAP_PUZZLE_HASH = SWAP_PUZZLE.get_tree_hash()
# DEFAULT_HIDDEN_PUZZLE is (=) instead of (x)
# so yes, I will use this opportunity to put my signature on the blockchain
# verify this is harmless with:
# brun -x 01 ff08ffff018879616b756869746f80
# (should output '(x (q . "yakuhito"))' - a program that always fails with the message 'yakuhito')
SECRET_PUZZLE = program_from_hex("ff08ffff018879616b756869746f80")
SECRET_PUZZLE_HASH = SECRET_PUZZLE.get_tree_hash()
MERKLE_ROOT, MERKLE_PROOFS = build_merkle_tree([
ADD_LIQUIDITY_PUZZLE_HASH,
REMOVE_LIQUIDITY_PUZZLE_HASH,
SWAP_PUZZLE_HASH,
SECRET_PUZZLE_HASH
])
def get_router_puzzle():
return ROUTER_MOD.curry(
PAIR_INNER_PUZZLE_MOD_HASH,
SINGLETON_MOD_HASH,
P2_MERKLE_TREE_MODIFIED_MOD_HASH,
P2_SINGLETON_FLASHLOAN_MOD_HASH,
CAT_MOD_HASH,
OFFER_MOD_HASH,
MERKLE_ROOT,
SINGLETON_LAUNCHER_HASH,
ROUTER_MOD_HASH
)
def get_pair_inner_inner_puzzle(singleton_launcher_id, tail_hash):
return PAIR_INNER_PUZZLE_MOD.curry(
P2_MERKLE_TREE_MODIFIED_MOD_HASH,
(SINGLETON_MOD_HASH, (singleton_launcher_id, SINGLETON_LAUNCHER_HASH)),
P2_SINGLETON_FLASHLOAN_MOD_HASH,
CAT_MOD_HASH,
OFFER_MOD_HASH,
tail_hash
)
def get_pair_inner_puzzle(singleton_launcher_id, tail_hash, liquidity, xch_reserve, token_reserve):
return P2_MERKLE_TREE_MODIFIED_MOD.curry(
get_pair_inner_inner_puzzle(singleton_launcher_id, tail_hash),
MERKLE_ROOT,
(liquidity, (xch_reserve, token_reserve))
)
def get_pair_puzzle(singleton_launcher_id, tail_hash, liquidity, xch_reserve, token_reserve):
return puzzle_for_singleton(
singleton_launcher_id,
get_pair_inner_puzzle(singleton_launcher_id,
tail_hash, liquidity, xch_reserve, token_reserve)
)
def pair_liquidity_tail_puzzle(pair_launcher_id):
return LIQUIDITY_TAIL_MOD.curry(
(SINGLETON_MOD_HASH, (pair_launcher_id, SINGLETON_LAUNCHER_HASH))
)
# https://github.com/Chia-Network/chia-blockchain/blob/main/chia/wallet/puzzles/singleton_top_layer_v1_1.py
def pay_to_singleton_flashloan_puzzle(launcher_id: bytes32) -> Program:
return P2_SINGLETON_FLASHLOAN_MOD.curry(SINGLETON_MOD_HASH, launcher_id, SINGLETON_LAUNCHER_HASH)
# https://github.com/Chia-Network/chia-blockchain/blob/main/chia/wallet/puzzles/singleton_top_layer_v1_1.py
def solution_for_p2_singleton_flashloan(
p2_singleton_coin: Coin,
singleton_inner_puzhash: bytes32,
extra_conditions=[]
) -> Program:
solution: Program = Program.to(
[singleton_inner_puzhash, p2_singleton_coin.name(), extra_conditions])
return solution
async def get_full_node_client(
chia_root,
leaflet_url
) -> FullNodeRpcClient:
node_client = None
if leaflet_url is not None:
# use leaflet by default
node_client = LeafletFullNodeRpcClient(leaflet_url)
else:
root_path = Path(chia_root)
config = load_config(root_path, "config.yaml")
self_hostname = config["self_hostname"]
rpc_port = config["full_node"]["rpc_port"]
node_client: FullNodeRpcClient = await FullNodeRpcClient.create(
self_hostname, uint16(rpc_port), root_path, config
)
await node_client.healthz()
return node_client
async def get_sim_full_node_client(
chia_root: str
) -> SimulatorFullNodeRpcClient:
root_path = Path(chia_root)
config = load_config(root_path, "config.yaml")
self_hostname = config["self_hostname"]
rpc_port = config["full_node"]["rpc_port"]
node_client: SimulatorFullNodeRpcClient = await SimulatorFullNodeRpcClient.create(
self_hostname, uint16(rpc_port), root_path, config
)
await node_client.healthz()
return node_client
async def get_wallet_client(
chia_root: str
) -> WalletRpcClient:
root_path = Path(chia_root)
config = load_config(root_path, "config.yaml")
self_hostname = config["self_hostname"]
rpc_port = config["wallet"]["rpc_port"]
wallet_client: WalletRpcClient = await WalletRpcClient.create(
self_hostname, uint16(rpc_port), root_path, config
)
await wallet_client.healthz()
return wallet_client
async def launch_router_from_coin(parent_coin, parent_coin_puzzle, fee=0):
comment: List[Tuple[str, str]] = [("tibet", "v2")]
conds, launcher_coin_spend = launch_conditions_and_coinsol(
parent_coin, get_router_puzzle(), comment, 1)
if parent_coin.amount > fee + 1:
conds.append(
[
ConditionOpcode.CREATE_COIN,
parent_coin.puzzle_hash,
parent_coin.amount - 1 - fee,
]
)
if fee > 0:
conds.append([
ConditionOpcode.RESERVE_FEE,
fee
])
p2_coin_spend = make_spend(
parent_coin,
parent_coin_puzzle,
solution_for_delegated_puzzle(Program.to((1, conds)), [])
)
sb = SpendBundle(
[launcher_coin_spend, p2_coin_spend],
AugSchemeMPL.aggregate([])
)
launcher_id = launcher_coin_spend.coin.name().hex()
return launcher_id, sb
async def create_test_cat(token_amount, coin, coin_puzzle):
coin_id = coin.name()
tail = GenesisById.construct([coin_id])
tail_hash = tail.get_tree_hash()
cat_inner_puzzle = coin_puzzle
cat_puzzle = construct_cat_puzzle(CAT_MOD, tail_hash, cat_inner_puzzle)
cat_puzzle_hash = cat_puzzle.get_tree_hash()
cat_creation_tx = make_spend(
coin,
cat_inner_puzzle, # same as this coin's puzzle
solution_for_delegated_puzzle(Program.to((1, [
[ConditionOpcode.CREATE_COIN, cat_puzzle_hash, token_amount * 1000],
[ConditionOpcode.CREATE_COIN, coin.puzzle_hash,
coin.amount - token_amount * 1000],
])), [])
)
cat_coin = Coin(
coin.name(), # parent
cat_puzzle_hash,
token_amount * 1000
)
cat_inner_solution = solution_for_delegated_puzzle(
Program.to((1, [
[ConditionOpcode.CREATE_COIN, 0, -113, tail, []],
[ConditionOpcode.CREATE_COIN, cat_inner_puzzle.get_tree_hash(),
cat_coin.amount]
])), []
)
cat_eve_spend_bundle = unsigned_spend_bundle_for_spendable_cats(
CAT_MOD,
[
SpendableCAT(
cat_coin,
tail_hash,
cat_inner_puzzle,
cat_inner_solution,
limitations_program_reveal=tail,
)
],
)
cat_eve_spend = cat_eve_spend_bundle.coin_spends[0]
sb = SpendBundle(
[cat_creation_tx, cat_eve_spend],
AugSchemeMPL.aggregate([])
)
return tail_hash.hex(), sb
# https://github.com/Chia-Network/chia-dev-tools/blob/main/cdv/cmds/chia_inspect.py#L312
def get_spend_bundle_cost_and_fees(sb: SpendBundle):
agg_sig = sb.aggregated_signature
coin_spends = []
for cs in sb.coin_spends:
if cs.coin.parent_coin_info == b"\x00" * 32: # offer *-*
continue
coin_spends.append(cs)
program: BlockGenerator = simple_solution_generator(
SpendBundle(coin_spends, agg_sig))
npc_result: NPCResult = get_name_puzzle_conditions(
program,
INFINITE_COST,
height=DEFAULT_CONSTANTS.SOFT_FORK2_HEIGHT,
mempool_mode=True,
constants=DEFAULT_CONSTANTS,
)
return int(npc_result.conds.cost), int(npc_result.conds.reserve_fee)
# my_solution = program_from_hex("80") # ()
# # run '(mod () (include condition_codes.clvm) (list (list CREATE_COIN 0x0000000000000000000000000000000000000000000000000000000000000001 1)))' -i include/ -d
# my_puzzle = program_from_hex("ff02ffff01ff04ffff04ff02ffff01ffa00000000000000000000000000000000000000000000000000000000000000001ff018080ff8080ffff04ffff0133ff018080")
# my_coin = Coin(b"\x00" * 32, my_puzzle.get_tree_hash(), 1)
# my_cs = make_spend(my_coin, my_puzzle, my_solution)
# sb = SpendBundle(
# [my_cs],
# AugSchemeMPL.aggregate([])
# )
# print(get_spend_bundle_cost(sb))
async def create_pair_from_coin(
coin,
coin_puzzle,
tail_hash,
router_launcher_id,
current_router_coin,
current_router_coin_creation_spend,
fee=ROUTER_MIN_FEE
):
if fee < ROUTER_MIN_FEE:
raise Exception(
f"The router requires a minimum fee of {ROUTER_MIN_FEE} to be spent.")
lineage_proof = lineage_proof_for_coinsol(
current_router_coin_creation_spend)
router_inner_puzzle = get_router_puzzle()
router_singleton_puzzle = puzzle_for_singleton(
router_launcher_id, router_inner_puzzle)
router_inner_solution = Program.to([
current_router_coin.name(),
tail_hash
])
router_singleton_solution = solution_for_singleton(
lineage_proof, current_router_coin.amount, router_inner_solution)
router_singleton_spend = make_spend(
current_router_coin, router_singleton_puzzle, router_singleton_solution)
pair_launcher_coin = Coin(
current_router_coin.name(), SINGLETON_LAUNCHER_HASH, 2)
pair_puzzle = get_pair_puzzle(
pair_launcher_coin.name(),
tail_hash,
0, 0, 0
)
comment: List[Tuple[str, str]] = []
# launch_conditions_and_coinsol would not work here since we spend a coin with amount 2
# and the solution says the amount is 1 *-*
pair_launcher_solution = Program.to(
[
pair_puzzle.get_tree_hash(),
1,
comment,
]
)
assert_launcher_announcement = [
ConditionOpcode.ASSERT_COIN_ANNOUNCEMENT,
std_hash(pair_launcher_coin.name() +
pair_launcher_solution.get_tree_hash()),
]
pair_launcher_spend = make_spend(
pair_launcher_coin,
SINGLETON_LAUNCHER,
pair_launcher_solution,
)
# first condition is CREATE_COIN, which we took care of
# important to note: router also takes care of assert_launcher_announcement, but we need it to link the fund spend to the bundle
conds = []
if coin.amount > fee + 1:
conds.append([ConditionOpcode.CREATE_COIN,
coin.puzzle_hash, coin.amount - fee - 1])
# RESERVE_FEE ROUTER_MIN_FEE is already created by the router
# 1 comes from the pair launcher coin being spent (amount=2; only CREATE_COIN uses 1)
# conds.append([ConditionOpcode.RESERVE_FEE, 1 + fee - ROUTER_MIN_FEE])
conds.append(assert_launcher_announcement)
fund_spend = make_spend(
coin,
coin_puzzle,
solution_for_delegated_puzzle(Program.to((1, conds)), [])
)
pair_launcher_id = Coin(current_router_coin.name(),
SINGLETON_LAUNCHER_HASH, 2).name().hex()
sb = SpendBundle(
[router_singleton_spend, pair_launcher_spend, fund_spend],
AugSchemeMPL.aggregate([])
)
return pair_launcher_id, sb
async def sync_router(full_node_client, last_router_id):
new_pairs = []
coin_record = await full_node_client.get_coin_record_by_name(last_router_id)
if not coin_record.spent:
# hack
current_router_coin, creation_spend, _ = await sync_router(full_node_client, coin_record.coin.parent_coin_info)
return current_router_coin, creation_spend, []
router_puzzle_hash = get_router_puzzle().get_tree_hash()
while coin_record.spent:
creation_spend = await full_node_client.get_puzzle_and_solution(last_router_id, coin_record.spent_block_index)
conditions_dict = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
if coin_record.coin.puzzle_hash != SINGLETON_LAUNCHER_HASH:
solution_program = creation_spend.solution.to_program()
tail_hash = [_ for _ in solution_program.as_iter()
][-1].as_python()[-1]
for cwa in conditions_dict[ConditionOpcode.CREATE_COIN]:
new_puzzle_hash = cwa.vars[0]
new_amount = cwa.vars[1]
if new_amount == b"\x01": # CREATE_COIN with amount=1 -> router recreated
new_router_coin = Coin(last_router_id, new_puzzle_hash, 1)
last_router_id = new_router_coin.name()
elif new_amount == b"\x02": # CREATE_COIN with amount=2 -> pair launcher deployed
assert new_puzzle_hash == SINGLETON_LAUNCHER_HASH
pair_launcher_coin = Coin(
creation_spend.coin.name(), new_puzzle_hash, 2)
pair_launcher_id = pair_launcher_coin.name()
new_pairs.append((tail_hash.hex(), pair_launcher_id.hex()))
else:
print(
"Someone did something extremely weird with the router - time to call the cops.")
sys.exit(1)
coin_record = await full_node_client.get_coin_record_by_name(last_router_id)
return coin_record.coin, creation_spend, new_pairs
async def get_spend_bundle_in_mempool(full_node_client, coin):
# try:
# parent_id_hex = "0x" + coin.parent_coin_info.hex()
# r = requests.post("http://localhost:1337/get_mempool_item_by_parent_coin_info", json={
# "request_url": full_node_client.leaflet_url + "get_all_mempool_items",
# "parent_coin_info": parent_id_hex
# })
# j = r.json()
# if j["item"] is None:
# return None
# return SpendBundle.from_json_dict(j["item"])
# except:
return await get_spend_bundle_in_mempool_full_node(full_node_client, coin.name())
async def get_spend_bundle_in_mempool_full_node(full_node_client: FullNodeRpcClient, coin_id: bytes32):
items = await full_node_client.fetch("get_mempool_items_by_coin_name", {"coin_name": coin_id.hex()})
for sb_json in items["mempool_items"]:
sb = SpendBundle.from_json_dict(sb_json["spend_bundle"])
for cs in sb.coin_spends:
if cs.coin.name() == coin_id:
return sb
return None
def get_coin_spend_from_sb(sb, coin_name):
if sb is None:
return None
for cs in sb.coin_spends:
if cs.coin.name() == coin_name:
return cs
return None
async def sync_pair(full_node_client, last_synced_coin_id):
state = {
"liquidity": 0,
"xch_reserve": 0,
"token_reserve": 0
}
coin_record = await full_node_client.get_coin_record_by_name(last_synced_coin_id)
last_synced_coin = coin_record.coin
creation_spend = None
if coin_record.coin.puzzle_hash == SINGLETON_LAUNCHER_HASH:
creation_spend = await full_node_client.get_puzzle_and_solution(last_synced_coin_id, coin_record.spent_block_index)
conditions_dict = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
last_synced_coin = Coin(coin_record.coin.name(
), conditions_dict[ConditionOpcode.CREATE_COIN][0].vars[0], 1)
if not coin_record.spent:
# hack
current_pair_coin, creation_spend, state, sb_to_aggregate, last_synced_pair_id_on_blockchain = await sync_pair(full_node_client, coin_record.coin.parent_coin_info)
return current_pair_coin, creation_spend, state, sb_to_aggregate, last_synced_pair_id_on_blockchain
creation_spend = None
while coin_record.spent:
creation_spend = await full_node_client.get_puzzle_and_solution(last_synced_coin_id, coin_record.spent_block_index)
conditions_dict = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN, []):
new_puzzle_hash = cwa.vars[0]
new_amount = cwa.vars[1]
if new_amount == b"\x01": # CREATE_COIN with amount=1 -> pair recreation
last_synced_coin = Coin(
last_synced_coin_id, new_puzzle_hash, 1)
last_synced_coin_id = last_synced_coin.name()
coin_record = await full_node_client.get_coin_record_by_name(last_synced_coin_id)
last_synced_pair_id_on_blockchain = last_synced_coin_id
# mempool - watch this aggregation!
last_coin_on_chain = coin_record.coin
last_coin_on_chain_id = last_coin_on_chain.name()
sb = await get_spend_bundle_in_mempool(full_node_client, last_coin_on_chain)
sb_to_aggregate = sb
coin_spend = get_coin_spend_from_sb(sb, last_coin_on_chain_id)
while coin_spend != None:
creation_spend = coin_spend
conditions_dict = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN, []):
new_puzzle_hash = cwa.vars[0]
new_amount = cwa.vars[1]
if new_amount == b"\x01": # CREATE_COIN with amount=1 -> pair recreation
last_synced_coin = Coin(
last_synced_coin_id, new_puzzle_hash, 1)
last_synced_coin_id = last_synced_coin.name()
coin_spend = get_coin_spend_from_sb(sb, last_synced_coin_id)
if creation_spend.coin.puzzle_hash == SINGLETON_LAUNCHER_HASH:
return last_synced_coin, creation_spend, state, None, last_synced_coin.name()
old_state = creation_spend.puzzle_reveal.uncurry()[1].at("rf").uncurry()[
1].at("rrf")
p2_merkle_solution = creation_spend.solution.to_program().at("rrf")
# p2_merkle_tree_modified -> parameters (which is a puzzle)
new_state_puzzle = p2_merkle_solution.at("f")
params = p2_merkle_solution.at("rrf").at("r")
# SINGLETON_STRUCT and my_coin_id are only used to create extra conditions
# in inner inner puzzle
dummy_singleton_struct = (b"\x00" * 32, (b"\x00" * 32, b"\x00" * 32))
dummy_coin_id = b"\x00" * 32
new_state_puzzle_sol = Program.to([
old_state,
params,
dummy_singleton_struct,
dummy_coin_id
])
new_state_puzzle_output = new_state_puzzle.run(new_state_puzzle_sol)
new_state = new_state_puzzle_output.at("f")
state = {
"liquidity": new_state.at("f").as_int(),
"xch_reserve": new_state.at("rf").as_int(),
"token_reserve": new_state.at("rr").as_int()
}
return last_synced_coin, creation_spend, state, sb_to_aggregate, last_synced_pair_id_on_blockchain
async def get_pair_reserve_info(
full_node_client,
pair_launcher_id,
pair_coin,
token_tail_hash,
creation_spend,
cached_sb
):
puzzle_announcements_asserts = []
conditions_dict = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.ASSERT_PUZZLE_ANNOUNCEMENT, []):
puzzle_announcements_asserts.append(cwa.vars[0])
if len(puzzle_announcements_asserts) == 0:
return None, None, None # new pair
p2_singleton_puzzle = pay_to_singleton_flashloan_puzzle(pair_launcher_id)
p2_singleton_puzzle_hash = p2_singleton_puzzle.get_tree_hash()
p2_singleton_cat_puzzle = construct_cat_puzzle(
CAT_MOD, token_tail_hash, p2_singleton_puzzle)
p2_singleton_cat_puzzle_hash = p2_singleton_cat_puzzle.get_tree_hash()
spends = []
if cached_sb is None:
coin_record = await full_node_client.get_coin_record_by_name(pair_coin.name())
block_record = await full_node_client.get_block_record_by_height(coin_record.confirmed_block_index)
spends = await full_node_client.get_block_spends(block_record.header_hash)
else:
spends = cached_sb.coin_spends
xch_reserve_coin = None
token_reserve_coin = None
token_reserve_lineage_proof = []
for spend in spends:
conditions_dict = conditions_dict_for_solution(
spend.puzzle_reveal,
spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.CREATE_PUZZLE_ANNOUNCEMENT, []):
ann_hash = std_hash(spend.coin.puzzle_hash + cwa.vars[0])
if ann_hash in puzzle_announcements_asserts:
amount = 0
for cwa2 in conditions_dict[ConditionOpcode.CREATE_COIN]:
if cwa2.vars[0] in [p2_singleton_puzzle_hash, p2_singleton_cat_puzzle_hash]:
amount = SExp.to(cwa2.vars[1]).as_int()
if spend.coin.puzzle_hash == OFFER_MOD_HASH:
xch_reserve_coin = Coin(
spend.coin.name(), p2_singleton_puzzle_hash, amount)
else: # OFFER_MOD_HASH but wrapped in CAT puzzle
token_reserve_coin = Coin(
spend.coin.name(), p2_singleton_cat_puzzle_hash, amount)
token_reserve_lineage_proof = [
spend.coin.parent_coin_info,
OFFER_MOD_HASH,
spend.coin.amount
]
break
return xch_reserve_coin, token_reserve_coin, token_reserve_lineage_proof
def get_announcements_asserts_for_notarized_payments(not_payments, puzzle_hash=OFFER_MOD_HASH):
conditions_dict = conditions_dict_for_solution(
OFFER_MOD,
not_payments,
INFINITE_COST
)
announcement_asserts = []
# cwa = condition with args
for cwa in conditions_dict.get(ConditionOpcode.CREATE_PUZZLE_ANNOUNCEMENT, []):
announcement_asserts.append([
ConditionOpcode.ASSERT_PUZZLE_ANNOUNCEMENT,
std_hash(puzzle_hash + cwa.vars[0])
])
return announcement_asserts
async def respond_to_deposit_liquidity_offer(
pair_launcher_id,
current_pair_coin,
creation_spend,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve,
offer_str,
last_xch_reserve_coin,
last_token_reserve_coin,
# coin_parent_coin_info, inner_puzzle_hash, amount
last_token_reserve_lineage_proof
):
# 1. Detect ephemeral coins (those created by the offer that we're allowed to use)
offer = Offer.from_bech32(offer_str)
offer_spend_bundle = offer.to_spend_bundle()
offer_coin_spends = offer_spend_bundle.coin_spends
eph_xch_coin = None
eph_token_coin = None
# needed when spending eph_token_coin since it's a CAT
eph_token_coin_creation_spend = None
announcement_asserts = [] # assert everything when the liquidity cat is minted
ephemeral_token_coin_puzzle = construct_cat_puzzle(
CAT_MOD, token_tail_hash, OFFER_MOD)
ephemeral_token_coin_puzzle_hash = ephemeral_token_coin_puzzle.get_tree_hash()
# all valid coin spends (i.e., not 'hints' for offered assets or coins)
cs_from_initial_offer = []
for coin_spend in offer_coin_spends:
# 'hint' for offer requested coin (liquidity CAT)
if coin_spend.coin.parent_coin_info == b"\x00" * 32:
continue
cs_from_initial_offer.append(coin_spend)
conditions_dict = conditions_dict_for_solution(
coin_spend.puzzle_reveal,
coin_spend.solution,
INFINITE_COST
)
# is this spend creating an ephemeral coin?
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN, []):
puzzle_hash = cwa.vars[0]
amount = SExp.to(cwa.vars[1]).as_int()
if puzzle_hash == OFFER_MOD_HASH:
eph_xch_coin = Coin(coin_spend.coin.name(),
puzzle_hash, amount)
if puzzle_hash == ephemeral_token_coin_puzzle_hash:
eph_token_coin = Coin(
coin_spend.coin.name(), puzzle_hash, amount)
eph_token_coin_creation_spend = coin_spend
# is there any announcement that we'll need to assert?
# cwa = condition with args
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN_ANNOUNCEMENT, []):
announcement_asserts.append([
ConditionOpcode.ASSERT_COIN_ANNOUNCEMENT,
std_hash(coin_spend.coin.name() + cwa.vars[0])
])
# 2. Math stuff
deposited_token_amount = eph_token_coin.amount
new_liquidity_token_amount = 0
for k, v in offer.get_requested_amounts().items():
new_liquidity_token_amount = v
target_liquidity_tokens = deposited_token_amount
if pair_liquidity > 0:
target_liquidity_tokens = deposited_token_amount * \
pair_liquidity // pair_token_reserve
deposited_xch_amount = eph_xch_coin.amount - new_liquidity_token_amount
if pair_token_reserve != 0:
deposited_xch_amount = pair_xch_reserve * \
deposited_token_amount // pair_token_reserve
if target_liquidity_tokens > new_liquidity_token_amount:
raise Exception(
f"Your offer is asking for too much liquidity ({new_liquidity_token_amount}; should be {target_liquidity_tokens}) - you need to offer at least {deposited_xch_amount} mojos and {deposited_token_amount} token mojos (/1000 to find out the number of tokens).")
if eph_xch_coin.amount - new_liquidity_token_amount != deposited_xch_amount:
raise Exception(
f"For {new_liquidity_token_amount} liquidity, you should be asking for {deposited_xch_amount + new_liquidity_token_amount} mojos, not ({eph_xch_coin.amount})")
# 3. spend the token ephemeral coin to create the token reserve coin
p2_singleton_puzzle = pay_to_singleton_flashloan_puzzle(pair_launcher_id)
p2_singleton_puzzle_cat = construct_cat_puzzle(
CAT_MOD, token_tail_hash, p2_singleton_puzzle)
eph_token_coin_notarized_payments = []
eph_token_coin_notarized_payments.append(
Program.to([
current_pair_coin.name(),
[p2_singleton_puzzle.get_tree_hash(), deposited_token_amount +
pair_token_reserve]
])
)
# send extra tokens to return address
if eph_token_coin.amount > deposited_token_amount:
raise Exception(
f"You provided {eph_token_coin.amount - deposited_token_amount} too many token mojos.")
# not_payment = Program.to([
# current_pair_coin.name(),
# [decode_puzzle_hash(return_address), eph_token_coin.amount - deposited_token_amount]
# ])
# eph_token_coin_notarized_payments.append(not_payment)
# for ann_assert in get_announcements_asserts_for_notarized_payments([not_payment], eph_token_coin.puzzle_hash):
# announcement_asserts.append(ann_assert)
eph_token_coin_inner_solution = Program.to(
eph_token_coin_notarized_payments)
spendable_cats_for_token_reserve = []
spendable_cats_for_token_reserve.append(
SpendableCAT(
eph_token_coin,
token_tail_hash,
OFFER_MOD,
eph_token_coin_inner_solution,
lineage_proof=LineageProof(
eph_token_coin_creation_spend.coin.parent_coin_info,
get_innerpuzzle_from_puzzle(
eph_token_coin_creation_spend.puzzle_reveal).get_tree_hash(),
eph_token_coin_creation_spend.coin.amount
)
)
)
pair_singleton_inner_puzzle = get_pair_inner_puzzle(
pair_launcher_id,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve
)
if last_token_reserve_coin is not None:
spendable_cats_for_token_reserve.append(
SpendableCAT(
last_token_reserve_coin,
token_tail_hash,
p2_singleton_puzzle,
solution_for_p2_singleton_flashloan(
last_token_reserve_coin, pair_singleton_inner_puzzle.get_tree_hash()
),
lineage_proof=LineageProof(
last_token_reserve_lineage_proof[0],
last_token_reserve_lineage_proof[1],
last_token_reserve_lineage_proof[2]
)
)
)
token_reserve_creation_spend_bundle = unsigned_spend_bundle_for_spendable_cats(
CAT_MOD, spendable_cats_for_token_reserve
)
token_reserve_creation_spends = token_reserve_creation_spend_bundle.coin_spends
# 4. spend the xch ephemeral coin
liquidity_cat_tail = pair_liquidity_tail_puzzle(pair_launcher_id)
liquidity_cat_tail_hash = liquidity_cat_tail.get_tree_hash()
liquidity_cat_mint_coin_tail_solution = Program.to(
[pair_singleton_inner_puzzle.get_tree_hash(), current_pair_coin.parent_coin_info])
# output everything from solution
# this is usually not safe to use, but in this case we don't really care since we are accepting an offer
# that is asking for liquidity tokens - it's kind of circular; if we don't get out tokens,
# the transaction doesn't go through because a puzzle announcemet from the parents of eph coins would fail
liquidity_cat_mint_coin_inner_puzzle = Program.from_bytes(b"\x01")
liquidity_cat_mint_coin_inner_puzzle_hash = liquidity_cat_mint_coin_inner_puzzle.get_tree_hash()
liquidity_cat_mint_coin_puzzle = construct_cat_puzzle(
CAT_MOD, liquidity_cat_tail_hash, liquidity_cat_mint_coin_inner_puzzle
)
liquidity_cat_mint_coin_puzzle_hash = liquidity_cat_mint_coin_puzzle.get_tree_hash()
eph_xch_coin_settlement_things = [
Program.to([
current_pair_coin.name(),
[p2_singleton_puzzle.get_tree_hash(), pair_xch_reserve +
deposited_xch_amount]
]),
Program.to([
current_pair_coin.name(),
[liquidity_cat_mint_coin_puzzle_hash, new_liquidity_token_amount]
])
]
# send extra XCH to return address
if eph_xch_coin.amount > deposited_xch_amount + new_liquidity_token_amount:
raise Exception(
f"You provided {eph_xch_coin.amount - deposited_xch_amount - new_liquidity_token_amount} too many mojos.")
# not_payment = Program.to([
# current_pair_coin.name(),
# [decode_puzzle_hash(return_address), eph_xch_coin.amount - deposited_xch_amount - new_liquidity_token_amount]
# ])
# eph_xch_coin_settlement_things.append(not_payment)
# for ann_assert in get_announcements_asserts_for_notarized_payments([not_payment]):
# announcement_asserts.append(ann_assert)
eph_xch_coin_solution = Program.to(eph_xch_coin_settlement_things)
eph_xch_coin_spend = make_spend(
eph_xch_coin, OFFER_MOD, eph_xch_coin_solution)
# 5. Re-create the pair singleton (spend it)
pair_singleton_puzzle = get_pair_puzzle(
pair_launcher_id,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve
)
inner_inner_sol = Program.to((
(
current_pair_coin.name(),
(
b"\x00" * 32 if last_xch_reserve_coin is None else last_xch_reserve_coin.name(),
b"\x00" * 32 if last_token_reserve_coin is None else last_token_reserve_coin.name()
)
),
[
deposited_token_amount,
liquidity_cat_mint_coin_inner_puzzle_hash,
eph_xch_coin.name(), # parent of liquidity cat mint coin
deposited_xch_amount
]
))
pair_singleton_inner_solution = Program.to([
ADD_LIQUIDITY_PUZZLE,
Program.to(MERKLE_PROOFS[ADD_LIQUIDITY_PUZZLE_HASH]),