def test_raise_exception_on_circular_dependency(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "hello"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "hello"
dependencies = ["hello"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "hello"
dependencies = ["goodbye"]
with pytest.raises(ServiceLoadError):
collection.load_definitions()
def test_load_services(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "hello"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "hello"
dependencies = ["hello"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "hello"
collection.load_definitions()
assert len(collection) == 3
def test_populate_dependants(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "not/used"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "not/used"
dependencies = ["hello", "howareyou"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "not/used"
collection.load_definitions()
assert len(collection.all_by_name) == 3
hello = collection.all_by_name['hello']
assert len(hello.dependants) == 1
assert hello.dependants[0].name == 'goodbye'
howareyou = collection.all_by_name['howareyou']
assert len(howareyou.dependants) == 2
names = [x.name for x in howareyou.dependants]
assert 'hello' in names
assert 'goodbye' in names
def test_raise_exception_on_no_services(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
with pytest.raises(ServiceLoadError):
collection.load_definitions()
def test_stop_dependency_and_dependant_excluded(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "hello"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "hello"
dependencies = ["hello"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "hello"
collection.load_definitions()
collection.exclude_for_stop(['howareyou', 'hello'])
def test_error_on_stop_dependency_excluded(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "hello"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "hello"
dependencies = ["hello"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "hello"
collection.load_definitions()
with pytest.raises(ServiceLoadError):
collection.exclude_for_stop(['goodbye'])
def test_start_dependency_and_dependant_excluded(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "hello"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "hello"
dependencies = ["hello"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "hello"
collection.load_definitions()
# There shouldn't be an exception, since we are excluding both hello and
# goodbye
collection.exclude_for_start(['hello', 'goodbye'])
def test_stop_without_remove(self):
container1 = FakeContainer(name='service1-testing-1234',
network='the-network',
status='running')
container2 = FakeContainer(name='service2-testing-5678',
network='the-network',
status='exited')
self.docker._existing_containers = [container1, container2]
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class ServiceOne(NewServiceBase):
name = "service1"
image = "howareyou/image"
class ServiceTwo(NewServiceBase):
name = "service2"
image = "howareyou/image"
collection._base_class = NewServiceBase
collection.load_definitions()
collection.stop_all(DEFAULT_OPTIONS)
assert container1.stopped
assert container1.timeout == 1
assert container1.removed_at is None
assert not container2.stopped
assert self.docker._networks_removed == []
def test_continue_if_start_failed(self):
"""If a service fails, those that don't depend on it should still be started"""
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class FirstService(NewServiceBase):
name = "first-service"
image = "howareyou/image"
def ping(self):
raise ValueError("I failed miserably")
class SecondService(NewServiceBase):
name = "second-service"
image = "howareyou/image"
def ping(self):
time.sleep(0.5)
return True
collection._base_class = NewServiceBase
collection.load_definitions()
started = collection.start_all(DEFAULT_OPTIONS)
assert started == ["second-service"]
def test_start_all_with_build(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "goodbye/image"
build_from = "goodbye/dir"
dockerfile = "Dockerfile.alt"
collection.load_definitions()
options = attr.evolve(DEFAULT_OPTIONS, build=['goodbye'])
retval = collection.start_all(options)
assert len(self.docker._images_built) == 1
build_dir, dockerfile, image_tag = self.docker._images_built[0]
assert build_dir == "/etc/goodbye/dir"
assert dockerfile == 'Dockerfile.alt'
assert image_tag.startswith("goodbye-")
service = collection.all_by_name['goodbye']
assert service.image == image_tag
def test_start_all(self):
# This test does not fake threading, which is somehow dangerous, but the
# aim is to make sure that the error handling etc. works also when there
# is an exception in the service agent thread, and the
# collection.start_all method does not hang.
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
collection._base_class = NewServiceBase
class ServiceOne(NewServiceBase):
name = "hello"
image = "hello/image"
dependencies = ["howareyou"]
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "goodbye/image"
dependencies = ["hello"]
class ServiceThree(NewServiceBase):
name = "howareyou"
image = "howareyou/image"
collection.load_definitions()
retval = collection.start_all(DEFAULT_OPTIONS)
assert set(retval) == {"hello", "goodbye", "howareyou"}
assert len(self.docker._services_started) == 3
# The one without dependencies should have been started first
name_prefix, service, network_name = self.docker._services_started[0]
assert service.image == 'howareyou/image'
assert name_prefix == "howareyou-testing"
def test_update_for_base_service(self):
container1 = FakeContainer(name='service1-testing-1234',
network='the-network',
status='running')
container2 = FakeContainer(name='service2-testing-5678',
network='the-network',
status='running')
container3 = FakeContainer(name='service3-testing-5678',
network='the-network',
status='running')
self.docker._existing_containers = [container1, container2, container3]
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class ServiceOne(NewServiceBase):
name = "service1"
image = "howareyou/image"
class ServiceTwo(NewServiceBase):
name = "service2"
image = "howareyou/image"
dependencies = ['service1']
class ServiceThree(NewServiceBase):
name = 'service3'
image = 'howareyou/image'
dependencies = ['service1', 'service2']
collection._base_class = NewServiceBase
collection.load_definitions()
collection.update_for_base_service('service2')
assert collection.all_by_name == {
'service2': ServiceTwo(),
'service3': ServiceThree()
}
collection.stop_all(DEFAULT_OPTIONS)
assert not container1.stopped
assert container2.stopped
assert container3.stopped
def test_stop_with_remove_and_exclude(self):
container1 = FakeContainer(name='service1-testing-1234',
network='the-network',
status='running')
container2 = FakeContainer(name='service2-testing-5678',
network='the-network',
status='running')
self.docker._existing_containers = [container1, container2]
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class ServiceOne(NewServiceBase):
name = "service1"
image = "howareyou/image"
class ServiceTwo(NewServiceBase):
name = "service2"
image = "howareyou/image"
collection._base_class = NewServiceBase
collection.load_definitions()
collection.exclude_for_stop(['service2'])
options = Options(network=Network(name='the-network',
id='the-network-id'),
timeout=50,
remove=True,
run_dir='/etc',
build=[])
collection.stop_all(options)
assert container1.stopped
assert container1.removed_at is not None
# service2 was excluded
assert not container2.stopped
assert container2.removed_at is None
# If excluded is not empty, network should not be removed
assert self.docker._networks_removed == []
def test_start_all_create_network(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class ServiceTwo(NewServiceBase):
name = "goodbye"
image = "goodbye/image"
collection._base_class = NewServiceBase
collection.load_definitions()
collection.start_all(DEFAULT_OPTIONS)
assert self.docker._networks_created == ["the-network"]
def test_stop_with_remove_and_order(self):
container1 = FakeContainer(name='service1-testing-1234',
network='the-network',
status='running')
container2 = FakeContainer(name='service2-testing-5678',
network='the-network',
status='running')
container3 = FakeContainer(name='service3-testing-5678',
network='the-network',
status='running')
self.docker._existing_containers = [container1, container2, container3]
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class ServiceOne(NewServiceBase):
name = "service1"
image = "howareyou/image"
class ServiceTwo(NewServiceBase):
name = "service2"
image = "howareyou/image"
dependencies = ['service1']
class ServiceThree(NewServiceBase):
name = "service3"
image = "howareyou/image"
dependencies = ['service2']
collection._base_class = NewServiceBase
collection.load_definitions()
options = Options(network=Network(name='the-network',
id='the-network-id'),
timeout=50,
remove=True,
run_dir='/etc',
build=[])
collection.stop_all(options)
assert container1.stopped
assert container1.removed_at is not None
assert container2.stopped
assert container2.removed_at is not None
assert container3.stopped
assert container3.removed_at is not None
assert container1.removed_at > container2.removed_at > container3.removed_at
assert self.docker._networks_removed == ['the-network']
def test_stop_on_fail(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class TheService(NewServiceBase):
name = "howareyou"
image = "howareyou/image"
def ping(self):
raise ValueError("I failed miserably")
collection._base_class = NewServiceBase
collection.load_definitions()
started = collection.start_all(DEFAULT_OPTIONS)
assert started == []
def test_dont_return_failed_services(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class TheFirstService(NewServiceBase):
name = "howareyou"
image = "howareyou/image"
class TheService(NewServiceBase):
name = "imok"
image = "howareyou/image"
dependencies = ["howareyou"]
def ping(self):
raise ValueError("I failed miserably")
collection._base_class = NewServiceBase
collection.load_definitions()
started = collection.start_all(DEFAULT_OPTIONS)
assert started == ["howareyou"]
def test_check_can_be_built(self):
collection = ServiceCollection()
class NewServiceBase(Service):
name = "not used"
image = "not used"
class ServiceOne(NewServiceBase):
name = "service1"
image = "howareyou/image"
class ServiceTwo(NewServiceBase):
name = "service2"
image = "howareyou/image"
build_from = "the/service/dir"
collection._base_class = NewServiceBase
collection.load_definitions()
with pytest.raises(ServiceDefinitionError):
collection.check_can_be_built('no-such-service')
with pytest.raises(ServiceDefinitionError):
collection.check_can_be_built('service1')
collection.check_can_be_built('service2')