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p2p_transfer.py
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# Copyright (c) The Diem Core Contributors
# SPDX-License-Identifier: Apache-2.0
import time
from diem import (
identifier,
diem_types,
stdlib,
testnet,
txnmetadata,
utils,
)
from .stubs import CustodialApp
def test_non_custodial_to_non_custodial():
client = testnet.create_client()
faucet = testnet.Faucet(client)
sender = faucet.gen_account()
receiver = faucet.gen_account()
amount = 1_000_000
script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(testnet.TEST_CURRENCY_CODE),
payee=receiver.account_address,
amount=amount,
metadata=b"", # no requirement for metadata and metadata signature
metadata_signature=b"",
)
seq_num = client.get_account_sequence(sender.account_address)
txn = create_transaction(sender, seq_num, script, testnet.TEST_CURRENCY_CODE)
signed_txn = sender.sign(txn)
client.submit(signed_txn)
executed_txn = client.wait_for_transaction(signed_txn)
assert executed_txn is not None
def test_non_custodial_to_custodial():
client = testnet.create_client()
faucet = testnet.Faucet(client)
sender = faucet.gen_account()
receiver_custodial = CustodialApp.create(faucet.gen_account())
intent_id = receiver_custodial.payment(user_id=0, amount=1_000_000)
intent = identifier.decode_intent(intent_id, identifier.TDM)
script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(intent.currency_code),
payee=utils.account_address(intent.account_address),
amount=intent.amount,
metadata=txnmetadata.general_metadata(None, intent.sub_address),
metadata_signature=b"", # only travel rule metadata requires signature
)
seq_num = client.get_account_sequence(sender.account_address)
txn = create_transaction(sender, seq_num, script, intent.currency_code)
signed_txn = sender.sign(txn)
client.submit(signed_txn)
executed_txn = client.wait_for_transaction(signed_txn)
assert executed_txn is not None
def test_custodial_to_non_custodial():
client = testnet.create_client()
faucet = testnet.Faucet(client)
sender_custodial = CustodialApp.create(faucet.gen_account())
receiver = faucet.gen_account()
amount = 1_000_000
currency_code = testnet.TEST_CURRENCY_CODE
script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(currency_code),
payee=utils.account_address(receiver.account_address),
amount=amount,
metadata=txnmetadata.general_metadata(sender_custodial.find_user_sub_address_by_id(0), None),
metadata_signature=b"", # only travel rule metadata requires signature
)
sender = sender_custodial.available_child_vasp()
seq_num = client.get_account_sequence(sender.account_address)
txn = create_transaction(sender, seq_num, script, currency_code)
signed_txn = sender.sign(txn)
client.submit(signed_txn)
executed_txn = client.wait_for_transaction(signed_txn)
assert executed_txn is not None
def test_custodial_to_custodial_under_threshold():
client = testnet.create_client()
faucet = testnet.Faucet(client)
sender_custodial = CustodialApp.create(faucet.gen_account())
receiver_custodial = CustodialApp.create(faucet.gen_account())
intent_id = receiver_custodial.payment(user_id=0, amount=1_000_000)
intent = identifier.decode_intent(intent_id, identifier.TDM)
script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(intent.currency_code),
payee=utils.account_address(intent.account_address),
amount=intent.amount,
metadata=txnmetadata.general_metadata(sender_custodial.find_user_sub_address_by_id(0), intent.sub_address),
metadata_signature=b"", # only travel rule metadata requires signature
)
sender = sender_custodial.available_child_vasp()
seq_num = client.get_account_sequence(sender.account_address)
txn = create_transaction(sender, seq_num, script, intent.currency_code)
signed_txn = sender.sign(txn)
client.submit(signed_txn)
executed_txn = client.wait_for_transaction(signed_txn)
assert executed_txn is not None
def test_custodial_to_custodial_above_threshold():
client = testnet.create_client()
faucet = testnet.Faucet(client)
sender_custodial = CustodialApp.create(faucet.gen_account())
receiver_custodial = CustodialApp.create(faucet.gen_account())
receiver_custodial.init_compliance_keys()
intent_id = receiver_custodial.payment(user_id=0, amount=2_000_000_000)
intent = identifier.decode_intent(intent_id, identifier.TDM)
sender = sender_custodial.available_child_vasp()
# sender & receiver communicate by off chain APIs
off_chain_reference_id = "32323abc"
metadata, metadata_signing_msg = txnmetadata.travel_rule(
off_chain_reference_id, sender.account_address, intent.amount
)
metadata_signature = receiver_custodial.compliance_key.sign(metadata_signing_msg)
# sender constructs transaction after off chain communication
script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(intent.currency_code),
payee=utils.account_address(intent.account_address),
amount=intent.amount,
metadata=metadata,
metadata_signature=metadata_signature,
)
seq_num = client.get_account_sequence(sender.account_address)
txn = create_transaction(sender, seq_num, script, intent.currency_code)
signed_txn = sender.sign(txn)
client.submit(signed_txn)
executed_txn = client.wait_for_transaction(signed_txn)
assert executed_txn is not None
def create_transaction(sender, sender_account_sequence, script, currency):
return diem_types.RawTransaction(
sender=sender.account_address,
sequence_number=sender_account_sequence,
payload=diem_types.TransactionPayload__Script(script),
max_gas_amount=1_000_000,
gas_unit_price=0,
gas_currency_code=currency,
expiration_timestamp_secs=int(time.time()) + 30,
chain_id=testnet.CHAIN_ID,
)