RETIRED, Function as a Service for OpenStack
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# Copyright 2017 Catalyst IT Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from datetime import datetime
import json
import tempfile
import uuid
import mock
from oslo_config import cfg
from qinling.db import api as db_api
from qinling import status
from qinling.tests.unit.api import base
from qinling.tests.unit import base as unit_base
from qinling.utils import constants
class TestFunctionController(base.APITest):
def setUp(self):
super(TestFunctionController, self).setUp()
# Insert a runtime record in db for each test case. The data will be
# removed automatically in tear down.
db_runtime = self.create_runtime()
self.runtime_id = db_runtime.id
@mock.patch('qinling.storage.file_system.FileSystemStorage.store')
def test_post(self, mock_store):
mock_store.return_value = (True, 'fake_md5')
with tempfile.NamedTemporaryFile() as f:
body = {
'name': self.rand_name('function', prefix=self.prefix),
'code': json.dumps({"source": "package"}),
'runtime_id': self.runtime_id,
}
resp = self.app.post(
'/v1/functions',
params=body,
upload_files=[('package', f.name, f.read())]
)
self.assertEqual(201, resp.status_int)
self.assertEqual(1, mock_store.call_count)
body.update(
{
'entry': 'main.main',
'code': {"source": "package", "md5sum": "fake_md5"}
}
)
self._assertDictContainsSubset(resp.json, body)
@mock.patch("qinling.utils.openstack.keystone.create_trust")
@mock.patch('qinling.utils.openstack.keystone.get_swiftclient')
@mock.patch('qinling.context.AuthHook.before')
def test_post_from_swift(self, mock_auth, mock_client, mock_trust):
self.override_config('auth_enable', True, group='pecan')
swift_conn = mock.Mock()
mock_client.return_value = swift_conn
swift_conn.head_object.return_value = {
'accept-ranges': 'bytes',
'content-length': str(constants.MAX_PACKAGE_SIZE - 1)
}
mock_trust.return_value.id = str(uuid.uuid4())
body = {
'name': 'swift_function',
'code': json.dumps(
{
"source": "swift",
"swift": {"container": "container", "object": "object"}
}
),
'runtime_id': self.runtime_id,
}
resp = self.app.post('/v1/functions', params=body)
self.assertEqual(201, resp.status_int)
body.update(
{
'entry': 'main.main',
'code': {
"source": "swift",
"swift": {"container": "container", "object": "object"}
}
}
)
self._assertDictContainsSubset(resp.json, body)
@mock.patch('qinling.utils.openstack.keystone.get_swiftclient')
@mock.patch('qinling.context.AuthHook.before')
def test_post_swift_size_exceed(self, mock_auth, mock_client):
self.override_config('auth_enable', True, group='pecan')
swift_conn = mock.Mock()
mock_client.return_value = swift_conn
swift_conn.head_object.return_value = {
'accept-ranges': 'bytes',
'content-length': str(constants.MAX_PACKAGE_SIZE + 1)
}
body = {
'name': 'swift_function',
'code': json.dumps(
{
"source": "swift",
"swift": {"container": "container", "object": "object"}
}
),
'runtime_id': self.runtime_id,
}
resp = self.app.post(
'/v1/functions',
params=body,
expect_errors=True
)
self.assertEqual(400, resp.status_int)
def test_get(self):
db_func = self.create_function(runtime_id=self.runtime_id)
expected = {
'id': db_func.id,
"code": {"source": "package", "md5sum": "fake_md5"},
"name": db_func.name,
'entry': 'main.main',
"project_id": unit_base.DEFAULT_PROJECT_ID,
"cpu": cfg.CONF.resource_limits.default_cpu,
"memory_size": cfg.CONF.resource_limits.default_memory,
}
resp = self.app.get('/v1/functions/%s' % db_func.id)
self.assertEqual(200, resp.status_int)
self._assertDictContainsSubset(resp.json, expected)
def test_get_all(self):
db_func = self.create_function(runtime_id=self.runtime_id)
expected = {
'id': db_func.id,
"name": db_func.name,
'entry': 'main.main',
"project_id": unit_base.DEFAULT_PROJECT_ID,
"cpu": cfg.CONF.resource_limits.default_cpu,
"memory_size": cfg.CONF.resource_limits.default_memory,
}
resp = self.app.get('/v1/functions')
self.assertEqual(200, resp.status_int)
actual = self._assert_single_item(
resp.json['functions'], id=db_func.id
)
self._assertDictContainsSubset(actual, expected)
def test_put_name(self):
db_func = self.create_function(runtime_id=self.runtime_id)
resp = self.app.put_json(
'/v1/functions/%s' % db_func.id, {'name': 'new_name'}
)
self.assertEqual(200, resp.status_int)
self.assertEqual('new_name', resp.json['name'])
@mock.patch('qinling.utils.etcd_util.delete_function')
@mock.patch('qinling.storage.file_system.FileSystemStorage.store')
@mock.patch('qinling.storage.file_system.FileSystemStorage.delete')
@mock.patch('qinling.rpc.EngineClient.delete_function')
def test_put_package(self, mock_delete_func, mock_delete, mock_store,
mock_etcd_del):
db_func = self.create_function(runtime_id=self.runtime_id)
mock_store.return_value = (True, "fake_md5_changed")
with tempfile.NamedTemporaryFile() as f:
resp = self.app.put(
'/v1/functions/%s' % db_func.id,
params={},
upload_files=[('package', f.name, f.read())]
)
self.assertEqual(200, resp.status_int)
self.assertEqual(1, mock_store.call_count)
self.assertEqual('fake_md5_changed', resp.json['code'].get('md5sum'))
mock_delete_func.assert_called_once_with(db_func.id)
mock_etcd_del.assert_called_once_with(db_func.id)
mock_delete.assert_called_once_with(unit_base.DEFAULT_PROJECT_ID,
db_func.id, "fake_md5")
@mock.patch('qinling.storage.file_system.FileSystemStorage.store')
@mock.patch('qinling.rpc.EngineClient.delete_function')
@mock.patch('qinling.utils.etcd_util.delete_function')
@mock.patch('qinling.storage.file_system.FileSystemStorage.delete')
def test_put_package_md5_not_change(self, file_delete_mock,
etcd_delete_mock, function_delete_mock,
store_mock):
db_func = self.create_function(runtime_id=self.runtime_id)
store_mock.return_value = (False, "fake_md5")
with tempfile.NamedTemporaryFile() as f:
resp = self.app.put(
'/v1/functions/%s' % db_func.id,
params={},
upload_files=[('package', f.name, f.read())]
)
self.assertEqual(200, resp.status_int)
self.assertEqual('fake_md5', resp.json['code'].get('md5sum'))
function_delete_mock.assert_called_once_with(db_func.id)
etcd_delete_mock.assert_called_once_with(db_func.id)
self.assertFalse(file_delete_mock.called)
def test_put_package_same_md5_provided(self):
db_func = self.create_function(runtime_id=self.runtime_id)
with tempfile.NamedTemporaryFile() as f:
resp = self.app.put(
'/v1/functions/%s' % db_func.id,
params={
"code": json.dumps(
{"md5sum": "fake_md5", "source": "package"}
)
},
upload_files=[('package', f.name, f.read())],
expect_errors=True
)
self.assertEqual(400, resp.status_int)
def test_put_cpu_with_type_error(self):
db_func = self.create_function(runtime_id=self.runtime_id)
# Check for type of cpu values.
resp = self.app.put_json(
'/v1/functions/%s' % db_func.id, {'cpu': 'non-int'},
expect_errors=True
)
self.assertEqual(400, resp.status_int)
self.assertIn(
'Invalid cpu resource specified. An integer is required.',
resp.json['faultstring']
)
def test_put_cpu_with_overrun_error(self):
db_func = self.create_function(runtime_id=self.runtime_id)
# Check for cpu error with input out of range.
resp = self.app.put_json(
'/v1/functions/%s' % db_func.id, {'cpu': 0},
expect_errors=True
)
self.assertEqual(400, resp.status_int)
self.assertIn(
'cpu resource limitation not within the allowable range',
resp.json['faultstring']
)
@mock.patch('qinling.storage.file_system.FileSystemStorage.delete')
@mock.patch('qinling.utils.etcd_util.delete_function')
@mock.patch('qinling.rpc.EngineClient.delete_function')
def test_put_cpu_and_memorysize(self, mock_delete_func, mock_etcd_del,
mock_storage_delete):
# Test for updating cpu/mem with good input values.
db_func = self.create_function(runtime_id=self.runtime_id)
req_body = {
'cpu': str(cfg.CONF.resource_limits.default_cpu + 1),
'memory_size': str(cfg.CONF.resource_limits.default_memory + 1)
}
resp = self.app.put_json('/v1/functions/%s' % db_func.id, req_body)
self.assertEqual(200, resp.status_int)
self.assertEqual(
cfg.CONF.resource_limits.default_cpu + 1,
resp.json['cpu']
)
self.assertEqual(
cfg.CONF.resource_limits.default_memory + 1,
resp.json['memory_size']
)
mock_delete_func.assert_called_once_with(db_func.id)
mock_etcd_del.assert_called_once_with(db_func.id)
self.assertFalse(mock_storage_delete.called)
@mock.patch('qinling.utils.etcd_util.delete_function')
@mock.patch('qinling.rpc.EngineClient.delete_function')
@mock.patch('qinling.storage.file_system.FileSystemStorage.delete')
def test_delete(self, mock_delete, mock_delete_func, mock_etcd_delete):
db_func = self.create_function(runtime_id=self.runtime_id)
resp = self.app.delete('/v1/functions/%s' % db_func.id)
self.assertEqual(204, resp.status_int)
mock_delete.assert_called_once_with(
unit_base.DEFAULT_PROJECT_ID, db_func.id, "fake_md5"
)
mock_delete_func.assert_called_once_with(db_func.id)
mock_etcd_delete.assert_called_once_with(db_func.id)
def test_delete_with_running_job(self):
db_func = self.create_function(runtime_id=self.runtime_id)
self.create_job(
function_id=db_func.id,
status=status.AVAILABLE,
first_execution_time=datetime.utcnow(),
next_execution_time=datetime.utcnow(),
count=1
)
resp = self.app.delete(
'/v1/functions/%s' % db_func.id,
expect_errors=True
)
self.assertEqual(403, resp.status_int)
def test_delete_with_webhook(self):
db_func = self.create_function(runtime_id=self.runtime_id)
self.create_webhook(function_id=db_func.id)
resp = self.app.delete(
'/v1/functions/%s' % db_func.id,
expect_errors=True
)
self.assertEqual(403, resp.status_int)
@mock.patch('qinling.utils.etcd_util.delete_function')
@mock.patch('qinling.rpc.EngineClient.delete_function')
@mock.patch('qinling.storage.file_system.FileSystemStorage.delete')
def test_delete_with_versions(self, mock_package_delete,
mock_engine_delete, mock_etcd_delete):
db_func = self.create_function(runtime_id=self.runtime_id)
func_id = db_func.id
# Create two versions for the function
db_api.increase_function_version(func_id, 0)
db_api.increase_function_version(func_id, 1)
resp = self.app.delete('/v1/functions/%s' % func_id)
self.assertEqual(204, resp.status_int)
self.assertEqual(3, mock_package_delete.call_count)
self.assertEqual(3, mock_engine_delete.call_count)
self.assertEqual(3, mock_etcd_delete.call_count)
mock_package_delete.assert_has_calls(
[
mock.call(unit_base.DEFAULT_PROJECT_ID, func_id, None,
version=1),
mock.call(unit_base.DEFAULT_PROJECT_ID, func_id, None,
version=2),
mock.call(unit_base.DEFAULT_PROJECT_ID, func_id, "fake_md5")
]
)
mock_engine_delete.assert_has_calls(
[
mock.call(func_id, version=1),
mock.call(func_id, version=2),
mock.call(func_id)
]
)
mock_etcd_delete.assert_has_calls(
[
mock.call(func_id, version=1),
mock.call(func_id, version=2),
mock.call(func_id)
]
)
def test_delete_with_version_associate_webhook(self):
db_func = self.create_function(runtime_id=self.runtime_id)
func_id = db_func.id
db_api.increase_function_version(func_id, 0)
self.create_webhook(func_id, function_version=1)
resp = self.app.delete(
'/v1/functions/%s' % func_id,
expect_errors=True
)
self.assertEqual(403, resp.status_int)
def test_delete_with_alias(self):
db_func = self.create_function(runtime_id=self.runtime_id)
func_id = db_func.id
name = self.rand_name(name="alias", prefix=self.prefix)
body = {
'function_id': func_id,
'name': name
}
db_api.create_function_alias(**body)
resp = self.app.delete(
'/v1/functions/%s' % func_id,
expect_errors=True
)
self.assertEqual(403, resp.status_int)
@mock.patch('qinling.rpc.EngineClient.scaleup_function')
def test_scale_up(self, scaleup_function_mock):
db_func = self.create_function(runtime_id=self.runtime_id)
body = {'count': 1}
resp = self.app.post(
'/v1/functions/%s/scale_up' % db_func.id,
params=json.dumps(body),
content_type='application/json'
)
self.assertEqual(202, resp.status_int)
scaleup_function_mock.assert_called_once_with(
db_func.id, runtime_id=self.runtime_id, count=1)
@mock.patch('qinling.utils.etcd_util.get_workers')
@mock.patch('qinling.rpc.EngineClient.scaledown_function')
def test_scale_down(self, scaledown_function_mock, get_workers_mock):
db_func = self.create_function(runtime_id=self.runtime_id)
get_workers_mock.return_value = [mock.Mock(), mock.Mock()]
body = {'count': 1}
resp = self.app.post(
'/v1/functions/%s/scale_down' % db_func.id,
params=json.dumps(body),
content_type='application/json'
)
self.assertEqual(202, resp.status_int)
scaledown_function_mock.assert_called_once_with(db_func.id, count=1)
@mock.patch('qinling.utils.etcd_util.get_workers')
@mock.patch('qinling.rpc.EngineClient.scaledown_function')
def test_scale_down_no_need(
self, scaledown_function_mock, get_workers_mock
):
db_func = self.create_function(runtime_id=self.runtime_id)
get_workers_mock.return_value = [mock.Mock()]
body = {'count': 1}
resp = self.app.post(
'/v1/functions/%s/scale_down' % db_func.id,
params=json.dumps(body),
content_type='application/json'
)
self.assertEqual(202, resp.status_int)
scaledown_function_mock.assert_not_called()
@mock.patch('qinling.utils.etcd_util.delete_function')
@mock.patch('qinling.rpc.EngineClient.delete_function')
def test_detach(
self, engine_delete_function_mock, etcd_delete_function_mock
):
db_func = self.create_function(runtime_id=self.runtime_id)
resp = self.app.post(
'/v1/functions/%s/detach' % db_func.id
)
self.assertEqual(202, resp.status_int)
engine_delete_function_mock.assert_called_once_with(db_func.id)
etcd_delete_function_mock.assert_called_once_with(db_func.id)