def test_get_private_eth_address_ng_not_exists_private_eth_address(self):
with self.assertRaises(RecordNotFoundError) as e:
self.cognito.admin_get_user = MagicMock(return_value={
'UserAttributes': [{
'Name': 'hoge',
'Value': 'piyo'
}]
})
UserUtil.get_private_eth_address(self.cognito, 'test')
self.assertEqual(e.exception.args[0],
'Record Not Found: private_eth_address')
def exec_main_proc(self):
# get private_eth_address
private_eth_address = UserUtil.get_private_eth_address(
self.cognito, self.params['user_id'])
return {
'statusCode': 200,
'body': json.dumps({'wallet_address': private_eth_address})
}
def test_get_private_eth_address_ok(self):
test_address = '0x401BA17D89D795B3C6e373c5062F1C3F8979e73B'
self.cognito.admin_get_user = MagicMock(
return_value={
'UserAttributes': [{
'Name': 'hoge',
'Value': 'piyo'
}, {
'Name': 'custom:private_eth_address',
'Value': test_address
}]
})
result = UserUtil.get_private_eth_address(self.cognito, 'test')
self.assertEqual(test_address, result)
def exec_main_proc(self):
################
# get parameter
################
# article info
article_info_table = self.dynamodb.Table(
os.environ['ARTICLE_INFO_TABLE_NAME'])
article_info = article_info_table.get_item(
Key={
'article_id': self.params['article_id']
}).get('Item')
# eth_address
from_user_eth_address = self.event['requestContext']['authorizer'][
'claims']['custom:private_eth_address']
to_user_eth_address = UserUtil.get_private_eth_address(
self.cognito, article_info['user_id'])
# transaction_count
transaction_count = PrivateChainUtil.get_transaction_count(
from_user_eth_address)
################
# validation
################
# does not tip same user
if article_info['user_id'] == self.event['requestContext'][
'authorizer']['claims']['cognito:username']:
raise ValidationError('Can not tip to myself')
# validate raw_transaction
# tip
tip_data = PrivateChainUtil.get_data_from_raw_transaction(
self.params['tip_signed_transaction'], transaction_count)
PrivateChainUtil.validate_erc20_transfer_data(tip_data,
to_user_eth_address)
# burn
transaction_count = PrivateChainUtil.increment_transaction_count(
transaction_count)
burn_data = PrivateChainUtil.get_data_from_raw_transaction(
self.params['burn_signed_transaction'], transaction_count)
PrivateChainUtil.validate_erc20_transfer_data(
burn_data, '0x' + os.environ['BURN_ADDRESS'])
# burn 量が正しいこと
tip_value = int(tip_data[72:], 16)
burn_value = int(burn_data[72:], 16)
calc_burn_value = int(Decimal(tip_value) / Decimal(10))
if burn_value != calc_burn_value:
raise ValidationError('burn_value is invalid.')
# 残高が足りていること
if not self.__is_burnable_user(from_user_eth_address, tip_value,
burn_value):
raise ValidationError('Required at least {token} token'.format(
token=tip_value + burn_value))
#######################
# send_raw_transaction
#######################
transaction_hash = PrivateChainUtil.send_raw_transaction(
self.params['tip_signed_transaction'])
burn_transaction = None
try:
# 投げ銭が成功した時のみバーン処理を行う
if PrivateChainUtil.is_transaction_completed(transaction_hash):
# バーンのトランザクション処理
burn_transaction = PrivateChainUtil.send_raw_transaction(
self.params['burn_signed_transaction'])
else:
logging.info(
'Burn was not executed because tip transaction was uncompleted.'
)
except Exception as err:
logging.fatal(err)
traceback.print_exc()
finally:
# create tip info
self.__create_tip_info(transaction_hash, tip_value,
burn_transaction, article_info)
return {'statusCode': 200}
def exec_main_proc(self):
################
# get parameter
################
# get article info
article_info_table = self.dynamodb.Table(
os.environ['ARTICLE_INFO_TABLE_NAME'])
article_info = article_info_table.get_item(
Key={
'article_id': self.params['article_id']
}).get('Item')
# purchase article
paid_articles_table = self.dynamodb.Table(
os.environ['PAID_ARTICLES_TABLE_NAME'])
paid_status_table = self.dynamodb.Table(
os.environ['PAID_STATUS_TABLE_NAME'])
# eth_address
article_user_eth_address = UserUtil.get_private_eth_address(
self.cognito, article_info['user_id'])
user_eth_address = self.event['requestContext']['authorizer'][
'claims']['custom:private_eth_address']
# transaction_count
transaction_count = PrivateChainUtil.get_transaction_count(
user_eth_address)
################
# validation
################
# does not purchase same user's article
user_id = self.event['requestContext']['authorizer']['claims'][
'cognito:username']
if article_info['user_id'] == user_id:
raise ValidationError('Can not purchase own article')
# validate raw_transaction
# purchase
purchase_data = PrivateChainUtil.get_data_from_raw_transaction(
self.params['purchase_signed_transaction'], transaction_count)
PrivateChainUtil.validate_erc20_transfer_data(
purchase_data, article_user_eth_address)
# burn
transaction_count = PrivateChainUtil.increment_transaction_count(
transaction_count)
burn_data = PrivateChainUtil.get_data_from_raw_transaction(
self.params['burn_signed_transaction'], transaction_count)
PrivateChainUtil.validate_erc20_transfer_data(
burn_data, '0x' + os.environ['BURN_ADDRESS'])
# burn 量が正しいこと
purchase_value = int(purchase_data[72:], 16)
burn_value = int(burn_data[72:], 16)
calc_burn_value = int(Decimal(purchase_value) / Decimal(9))
if burn_value != calc_burn_value:
raise ValidationError('burn_value is invalid.')
# purchase_value が記事で指定されている金額に基づいた量が設定されていること
DBUtil.validate_latest_price(self.dynamodb, self.params['article_id'],
purchase_value)
################
# purchase
################
sort_key = TimeUtil.generate_sort_key()
# 多重リクエストによる不必要なレコード生成を防ぐためにpaid_statusレコードを生成
self.__create_paid_status(paid_status_table, user_id)
# 購入のトランザクション処理
purchase_transaction = PrivateChainUtil.send_raw_transaction(
self.params['purchase_signed_transaction'])
# 購入記事データを作成
self.__create_paid_article(paid_articles_table, article_info,
purchase_transaction, sort_key)
# プライベートチェーンへのポーリングを行いトランザクションの承認状態を取得
transaction_status = self.__polling_to_private_chain(
purchase_transaction)
# トランザクションの承認状態をpaid_articleとpaid_statusに格納
self.__update_transaction_status(article_info, paid_articles_table,
transaction_status, sort_key,
paid_status_table, user_id)
# 購入のトランザクションが成功した時のみバーンのトランザクションを発行する
if transaction_status == 'done':
try:
# 購入に成功した場合、著者の未読通知フラグをTrueにする
self.__update_unread_notification_manager(
article_info['user_id'])
# 著者へ通知を作成
self.__notify_author(article_info, user_id)
# バーンのトランザクション処理
burn_transaction = PrivateChainUtil.send_raw_transaction(
self.params['burn_signed_transaction'])
# バーンのトランザクションを購入テーブルに格納
self.__add_burn_transaction_to_paid_article(
burn_transaction, paid_articles_table, article_info,
sort_key)
except Exception as err:
logging.fatal(err)
traceback.print_exc()
# 記事購入者へは購入処理中の場合以外で通知を作成
if transaction_status == 'done' or transaction_status == 'fail':
self.__update_unread_notification_manager(user_id)
self.__notify_purchaser(article_info, user_id, transaction_status)
return {
'statusCode': 200,
'body': json.dumps({'status': transaction_status})
}
