Files
notifications-api/tests/app/clients/test_cbc_proxy.py
Pea Tyczynska b5a33ded98 Retry with failover lambda for FunctionError and status > 299
For all FunctionErrors, and for invoke errors (status > 299) we
want to retry with failover lambda.

We are doing this, because if there is a connection or other error
with one lambda, the failover lambda may still work and it's
worth trying.

With time, we will probably have more complex retry flow, depending
on the error and even maybe differing for each MNO (broadcast provider).
2021-01-14 10:45:29 +00:00

592 lines
16 KiB
Python

import json
import uuid
from collections import namedtuple
from datetime import datetime
from unittest.mock import Mock, call
import pytest
from app.clients.cbc_proxy import CBCProxyClient, CBCProxyException, CBCProxyEE, CBCProxyCanary
from app.utils import DATETIME_FORMAT
EXAMPLE_AREAS = [{
'description': 'london',
'polygon': [
[51.12, -1.2],
[51.12, 1.2],
[51.74, 1.2],
[51.74, -1.2],
[51.12, -1.2],
],
}]
@pytest.fixture(scope='function')
def cbc_proxy_client(client, mocker):
client = CBCProxyClient()
current_app = mocker.Mock(config={
'CBC_PROXY_AWS_ACCESS_KEY_ID': 'cbc-proxy-aws-access-key-id',
'CBC_PROXY_AWS_SECRET_ACCESS_KEY': 'cbc-proxy-aws-secret-access-key',
'CBC_PROXY_ENABLED': True,
})
client.init_app(current_app)
return client
@pytest.fixture
def cbc_proxy_ee(cbc_proxy_client):
return cbc_proxy_client.get_proxy('ee')
@pytest.fixture
def cbc_proxy_vodafone(cbc_proxy_client):
return cbc_proxy_client.get_proxy('vodafone')
@pytest.mark.parametrize('provider_name, expected_provider_class', [
('ee', CBCProxyEE),
('canary', CBCProxyCanary),
])
def test_cbc_proxy_client_returns_correct_client(provider_name, expected_provider_class):
mock_lambda = Mock()
cbc_proxy_client = CBCProxyClient()
cbc_proxy_client._lambda_client = mock_lambda
ret = cbc_proxy_client.get_proxy(provider_name)
assert type(ret) == expected_provider_class
assert ret._lambda_client == mock_lambda
def test_cbc_proxy_lambda_client_has_correct_region(cbc_proxy_ee):
assert cbc_proxy_ee._lambda_client._client_config.region_name == 'eu-west-2'
def test_cbc_proxy_lambda_client_has_correct_keys(cbc_proxy_ee):
key = cbc_proxy_ee._lambda_client._request_signer._credentials.access_key
secret = cbc_proxy_ee._lambda_client._request_signer._credentials.secret_key
assert key == 'cbc-proxy-aws-access-key-id'
assert secret == 'cbc-proxy-aws-secret-access-key'
@pytest.mark.parametrize('description, expected_language', (
('my-description', 'en-GB'),
('mŷ-description', 'cy-GB'),
))
def test_cbc_proxy_ee_create_and_send_invokes_function(
mocker,
cbc_proxy_ee,
description,
expected_language,
):
identifier = 'my-identifier'
headline = 'my-headline'
sent = 'a-passed-through-sent-value'
expires = 'a-passed-through-expires-value'
ld_client_mock = mocker.patch.object(
cbc_proxy_ee,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
cbc_proxy_ee.create_and_send_broadcast(
identifier=identifier,
message_number='0000007b',
headline=headline,
description=description,
areas=EXAMPLE_AREAS,
sent=sent, expires=expires,
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='bt-ee-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
assert 'message_number' not in payload
assert payload['message_format'] == 'cap'
assert payload['message_type'] == 'alert'
assert payload['headline'] == headline
assert payload['description'] == description
assert payload['areas'] == EXAMPLE_AREAS
assert payload['sent'] == sent
assert payload['expires'] == expires
assert payload['language'] == expected_language
def test_cbc_proxy_ee_cancel_invokes_function(mocker, cbc_proxy_ee):
identifier = 'my-identifier'
MockProviderMessage = namedtuple(
'BroadcastProviderMessage', ['id', 'message_number', 'created_at']
)
provider_messages = [
MockProviderMessage(uuid.uuid4(), '0000007b', datetime(2020, 12, 16)),
MockProviderMessage(uuid.uuid4(), '0000004e', datetime(2020, 12, 17))
]
sent = '2020-12-17 14:19:44.130585'
ld_client_mock = mocker.patch.object(
cbc_proxy_ee,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
cbc_proxy_ee.cancel_broadcast(
identifier=identifier,
message_number='00000050',
previous_provider_messages=provider_messages,
sent=sent
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='bt-ee-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
assert 'message_number' not in payload
assert payload['message_format'] == 'cap'
assert payload['message_type'] == 'cancel'
assert payload['references'] == [
{
"message_id": str(provider_messages[0].id),
"sent": provider_messages[0].created_at.strftime(DATETIME_FORMAT)
},
{
"message_id": str(provider_messages[1].id),
"sent": provider_messages[1].created_at.strftime(DATETIME_FORMAT)
},
]
assert payload['sent'] == sent
@pytest.mark.parametrize('description, expected_language', (
('my-description', 'English'),
('mŷ-description', 'Welsh'),
))
def test_cbc_proxy_vodafone_create_and_send_invokes_function(
mocker,
cbc_proxy_vodafone,
description,
expected_language,
):
identifier = 'my-identifier'
headline = 'my-headline'
sent = 'a-passed-through-sent-value'
expires = 'a-passed-through-expires-value'
ld_client_mock = mocker.patch.object(
cbc_proxy_vodafone,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
cbc_proxy_vodafone.create_and_send_broadcast(
identifier=identifier,
message_number='0000007b',
headline=headline,
description=description,
areas=EXAMPLE_AREAS,
sent=sent, expires=expires,
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='vodafone-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
assert payload['message_number'] == '0000007b'
assert payload['message_format'] == 'ibag'
assert payload['message_type'] == 'alert'
assert payload['headline'] == headline
assert payload['description'] == description
assert payload['areas'] == EXAMPLE_AREAS
assert payload['sent'] == sent
assert payload['expires'] == expires
assert payload['language'] == expected_language
def test_cbc_proxy_vodafone_cancel_invokes_function(mocker, cbc_proxy_vodafone):
identifier = 'my-identifier'
MockProviderMessage = namedtuple(
'BroadcastProviderMessage',
['id', 'message_number', 'created_at']
)
provider_messages = [
MockProviderMessage(uuid.uuid4(), 78, datetime(2020, 12, 16)),
MockProviderMessage(uuid.uuid4(), 123, datetime(2020, 12, 17))
]
sent = '2020-12-18 14:19:44.130585'
ld_client_mock = mocker.patch.object(
cbc_proxy_vodafone,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
cbc_proxy_vodafone.cancel_broadcast(
identifier=identifier,
message_number='00000050',
previous_provider_messages=provider_messages,
sent=sent
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='vodafone-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
assert payload['message_number'] == '00000050'
assert payload['message_format'] == 'ibag'
assert payload['message_type'] == 'cancel'
assert payload['references'] == [
{
"message_id": str(provider_messages[0].id),
"message_number": '0000004e',
"sent": provider_messages[0].created_at.strftime(DATETIME_FORMAT)
},
{
"message_id": str(provider_messages[1].id),
"message_number": '0000007b',
"sent": provider_messages[1].created_at.strftime(DATETIME_FORMAT)
},
]
assert payload['sent'] == sent
@pytest.mark.parametrize('cbc', ['bt-ee', 'vodafone'])
def test_cbc_proxy_will_failover_to_second_lambda_if_function_error(
mocker,
cbc_proxy_ee,
cbc_proxy_vodafone,
cbc
):
cbc_proxy = cbc_proxy_ee if cbc == 'bt-ee' else cbc_proxy_vodafone
ld_client_mock = mocker.patch.object(
cbc_proxy,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.side_effect = [
{
'StatusCode': 200,
'FunctionError': 'Handled',
'Payload': {
"errorMessage": "",
"errorType": "CBCNewConnectionError"
}
},
{
'StatusCode': 200
}
]
cbc_proxy.create_and_send_broadcast(
identifier='my-identifier',
message_number='0000007b',
headline='my-headline',
description='test-description',
areas=EXAMPLE_AREAS,
sent='a-passed-through-sent-value',
expires='a-passed-through-expires-value',
)
assert ld_client_mock.invoke.call_args_list == [
call(
FunctionName=f'{cbc}-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
),
call(
FunctionName=f'{cbc}-2-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
]
@pytest.mark.parametrize('cbc', ['bt-ee', 'vodafone'])
def test_cbc_proxy_will_failover_to_second_lambda_if_invoke_error(
mocker,
cbc_proxy_ee,
cbc_proxy_vodafone,
cbc
):
cbc_proxy = cbc_proxy_ee if cbc == 'bt-ee' else cbc_proxy_vodafone
ld_client_mock = mocker.patch.object(
cbc_proxy,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.side_effect = [
{
'StatusCode': 400
},
{
'StatusCode': 200
}
]
cbc_proxy.create_and_send_broadcast(
identifier='my-identifier',
message_number='0000007b',
headline='my-headline',
description='test-description',
areas=EXAMPLE_AREAS,
sent='a-passed-through-sent-value',
expires='a-passed-through-expires-value',
)
assert ld_client_mock.invoke.call_args_list == [
call(
FunctionName=f'{cbc}-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
),
call(
FunctionName=f'{cbc}-2-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
]
@pytest.mark.parametrize('cbc', ['bt-ee', 'vodafone'])
def test_cbc_proxy_create_and_send_tries_failover_lambda_on_invoke_error_and_raises_if_both_invoke_error(
mocker, cbc_proxy_ee, cbc_proxy_vodafone, cbc
):
cbc_proxy = cbc_proxy_ee if cbc == 'bt-ee' else cbc_proxy_vodafone
ld_client_mock = mocker.patch.object(
cbc_proxy,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 400,
}
with pytest.raises(CBCProxyException) as e:
cbc_proxy.create_and_send_broadcast(
identifier='my-identifier',
message_number='0000007b',
headline='my-headline',
description='my-description',
areas=EXAMPLE_AREAS,
sent='a-passed-through-sent-value',
expires='a-passed-through-expires-value',
)
assert e.match(f'Lambda failed for both {cbc}-1-proxy and {cbc}-2-proxy')
assert ld_client_mock.invoke.call_args_list == [
call(
FunctionName=f'{cbc}-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
),
call(
FunctionName=f'{cbc}-2-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
]
@pytest.mark.parametrize('cbc', ['bt-ee', 'vodafone'])
def test_cbc_proxy_create_and_send_tries_failover_lambda_on_function_error_and_raises_if_both_function_error(
mocker, cbc_proxy_ee, cbc_proxy_vodafone, cbc
):
cbc_proxy = cbc_proxy_ee if cbc == 'bt-ee' else cbc_proxy_vodafone
ld_client_mock = mocker.patch.object(
cbc_proxy,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
'FunctionError': 'something',
'Payload': {
'errorMessage': 'some message',
'errorType': 'SomeErrorType'
}
}
with pytest.raises(CBCProxyException) as e:
cbc_proxy.create_and_send_broadcast(
identifier='my-identifier',
message_number='0000007b',
headline='my-headline',
description='my-description',
areas=EXAMPLE_AREAS,
sent='a-passed-through-sent-value',
expires='a-passed-through-expires-value',
)
assert e.match(f'Lambda failed for both {cbc}-1-proxy and {cbc}-2-proxy')
assert ld_client_mock.invoke.call_args_list == [
call(
FunctionName=f'{cbc}-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
),
call(
FunctionName=f'{cbc}-2-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
]
def test_cbc_proxy_send_canary_invokes_function(mocker, cbc_proxy_client):
identifier = str(uuid.uuid4())
canary_client = cbc_proxy_client.get_proxy('canary')
ld_client_mock = mocker.patch.object(
canary_client,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
canary_client.send_canary(
identifier=identifier,
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='canary',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
def test_cbc_proxy_ee_send_link_test_invokes_function(mocker, cbc_proxy_ee):
identifier = str(uuid.uuid4())
ld_client_mock = mocker.patch.object(
cbc_proxy_ee,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
cbc_proxy_ee.send_link_test(
identifier=identifier,
sequential_number='0000007b',
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='bt-ee-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
assert payload['message_type'] == 'test'
assert 'message_number' not in payload
assert payload['message_format'] == 'cap'
def test_cbc_proxy_vodafone_send_link_test_invokes_function(mocker, cbc_proxy_vodafone):
identifier = str(uuid.uuid4())
ld_client_mock = mocker.patch.object(
cbc_proxy_vodafone,
'_lambda_client',
create=True,
)
ld_client_mock.invoke.return_value = {
'StatusCode': 200,
}
cbc_proxy_vodafone.send_link_test(
identifier=identifier,
sequential_number='0000007b',
)
ld_client_mock.invoke.assert_called_once_with(
FunctionName='vodafone-1-proxy',
InvocationType='RequestResponse',
Payload=mocker.ANY,
)
kwargs = ld_client_mock.invoke.mock_calls[0][-1]
payload_bytes = kwargs['Payload']
payload = json.loads(payload_bytes)
assert payload['identifier'] == identifier
assert payload['message_type'] == 'test'
assert payload['message_number'] == '0000007b'
assert payload['message_format'] == 'ibag'