async def handler(values=None, **kwargs):
try:
expire_at = values.timestamp + datetime.timedelta(
seconds=int(values.expire))
except Exception:
return 400, {'error': 'Invalid value for expire'}
try:
stored_data = await load('user', values.prompt_user_hash)
if stored_data:
if stored_data.get('state') in ('pending',
'received') and not is_expired(
stored_data.get('expireAt')):
return 406, {'error': 'Prompt already pending'}
if values.encrypted_data and sha3(
stored_data.get('encryptedData')) == sha3(
values.encrypted_data):
return 406, {'error': 'Prompt already sent'}
except Exception:
pass
prompt_identifier = str(uuid.uuid4())
store_data = {
'promptIdentifier': prompt_identifier,
'promptUserHash': values.prompt_user_hash,
'uniqueIdentifier': str(uuid.uuid4()),
'state': 'pending',
'encryptedData': values.encrypted_data,
'timestamp': values.timestamp.strftime('%Y-%m-%dT%H:%M:%S.%fZ'),
'expireAt': expire_at.strftime('%Y-%m-%dT%H:%M:%S.%fZ'),
'respondedAt': None,
'responseHash': None
}
await store('prompt', prompt_identifier, store_data)
await store('user', values.prompt_user_hash, store_data)
subscription_data = await load('subscription',
values.prompt_user_hash) # noqa
if subscription_data and isinstance(subscription_data, list):
for subscription in subscription_data:
if subscription.get('promptUserHash') == values.prompt_user_hash:
# todo send notification
pass
return 200, {
'promptIdentifier': prompt_identifier,
'state': store_data.get('state'),
'expireAt': store_data.get('expireAt')
}
async def _load_s3(file_type, identifier, decode=True):
client = _get_s3_client()
try:
object_data = await async_call(client.get_object(
Bucket=settings.aws_s3_bucket,
Key='{}/{}'.format(file_type, sha3(identifier))
))
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == 'NoSuchKey':
return None
if e.response['Error']['Code'] == 'AccessDenied':
return None
else:
raise e
data = await async_call(object_data.get('Body').read())
if data:
data = decrypt(data, identifier)
try:
if data and decode:
return json.loads(data)
except Exception:
pass
return data
async def _store_s3(file_type, identifier, data, save_previous=False):
client = _get_s3_client()
key = '{}/{}'.format(file_type, sha3(identifier))
if isinstance(data, str):
data = data.encode('utf-8')
if not isinstance(data, bytes):
data = json.dumps(data).encode()
if save_previous:
try:
await async_call(client.copy_object(
Bucket=settings.aws_s3_bucket,
Key=f'{key}.previousver',
CopySource={'Bucket': settings.aws_s3_bucket, 'Key': key}
))
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == 'NoSuchKey':
pass
if e.response['Error']['Code'] == 'AccessDenied':
pass
else:
raise e
if data:
data = encrypt(data, identifier)
await async_call(client.put_object(
Bucket=settings.aws_s3_bucket,
Key=key,
Body=data
))
async def _delete_local(file_type, identifier, delete_previous=False):
file_path = os.path.join(settings.data_path, file_type, sha3(identifier))
if os.path.isfile(file_path):
os.remove(file_path)
if delete_previous:
previousver_file_path = f'{file_path}.previousver'
if os.path.isfile(previousver_file_path):
os.remove(previousver_file_path)
async def _delete_s3(file_type, identifier, delete_previous=False):
client = _get_s3_client()
key = '{}/{}'.format(file_type, sha3(identifier))
await async_call(client.delete_object(
Bucket=settings.aws_s3_bucket,
Key=key
))
if delete_previous:
await async_call(client.delete_object(
Bucket=settings.aws_s3_bucket,
Key=f'{key}.previousver'
))
async def _mtime_s3(file_type, identifier, decode=True):
client = _get_s3_client()
try:
object_data = await async_call(client.head_object( # noqa
Bucket=settings.aws_s3_bucket,
Key='{}/{}'.format(file_type, sha3(identifier))
))
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == 'NoSuchKey':
return None
if e.response['Error']['Code'] == 'AccessDenied':
return None
else:
raise e
return None
async def _load_local(file_type, identifier, decode=True):
file_path = os.path.join(settings.data_path, file_type, sha3(identifier))
if os.path.isfile(file_path):
with open(file_path, 'rb') as file:
data = file.read()
if data:
data = decrypt(data, identifier)
try:
if data and decode:
return json.loads(data)
except Exception:
pass
return data
return None
async def _store_local(file_type, identifier, data, save_previous=False):
directory = os.path.join(settings.data_path, file_type)
file_path = os.path.join(directory, sha3(identifier))
if isinstance(data, str):
data = data.encode('utf-8')
if not isinstance(data, bytes):
data = json.dumps(data).encode()
if not os.path.isdir(directory):
os.makedirs(directory)
if save_previous and os.path.isfile(file_path):
shutil.copyfile(file_path, f'{file_path}.previousver')
if data:
data = encrypt(data, identifier)
with open(file_path, 'wb') as file:
file.write(data)