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|
import unittest
import docker
from .. import helpers
from .base import TEST_API_VERSION
from docker.errors import InvalidArgument
from docker.types.services import ServiceMode
class ServiceTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
client = docker.from_env(version=TEST_API_VERSION)
helpers.force_leave_swarm(client)
client.swarm.init('127.0.0.1', listen_addr=helpers.swarm_listen_addr())
@classmethod
def tearDownClass(cls):
helpers.force_leave_swarm(docker.from_env(version=TEST_API_VERSION))
def test_create(self):
client = docker.from_env(version=TEST_API_VERSION)
name = helpers.random_name()
service = client.services.create(
# create arguments
name=name,
labels={'foo': 'bar'},
# ContainerSpec arguments
image="alpine",
command="sleep 300",
container_labels={'container': 'label'}
)
assert service.name == name
assert service.attrs['Spec']['Labels']['foo'] == 'bar'
container_spec = service.attrs['Spec']['TaskTemplate']['ContainerSpec']
assert "alpine" in container_spec['Image']
assert container_spec['Labels'] == {'container': 'label'}
def test_create_with_network(self):
client = docker.from_env(version=TEST_API_VERSION)
name = helpers.random_name()
network = client.networks.create(
helpers.random_name(), driver='overlay'
)
service = client.services.create(
# create arguments
name=name,
# ContainerSpec arguments
image="alpine",
command="sleep 300",
networks=[network.id]
)
assert 'Networks' in service.attrs['Spec']['TaskTemplate']
networks = service.attrs['Spec']['TaskTemplate']['Networks']
assert len(networks) == 1
assert networks[0]['Target'] == network.id
def test_get(self):
client = docker.from_env(version=TEST_API_VERSION)
name = helpers.random_name()
service = client.services.create(
name=name,
image="alpine",
command="sleep 300"
)
service = client.services.get(service.id)
assert service.name == name
def test_list_remove(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
name=helpers.random_name(),
image="alpine",
command="sleep 300"
)
assert service in client.services.list()
service.remove()
assert service not in client.services.list()
def test_tasks(self):
client = docker.from_env(version=TEST_API_VERSION)
service1 = client.services.create(
name=helpers.random_name(),
image="alpine",
command="sleep 300"
)
service2 = client.services.create(
name=helpers.random_name(),
image="alpine",
command="sleep 300"
)
tasks = []
while len(tasks) == 0:
tasks = service1.tasks()
assert len(tasks) == 1
assert tasks[0]['ServiceID'] == service1.id
tasks = []
while len(tasks) == 0:
tasks = service2.tasks()
assert len(tasks) == 1
assert tasks[0]['ServiceID'] == service2.id
def test_update(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
# ContainerSpec arguments
image="alpine",
command="sleep 300"
)
service.update(
# create argument
name=service.name,
# ContainerSpec argument
command="sleep 600"
)
service.reload()
container_spec = service.attrs['Spec']['TaskTemplate']['ContainerSpec']
assert container_spec['Command'] == ["sleep", "600"]
def test_update_retains_service_labels(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
labels={'service.label': 'SampleLabel'},
# ContainerSpec arguments
image="alpine",
command="sleep 300"
)
service.update(
# create argument
name=service.name,
# ContainerSpec argument
command="sleep 600"
)
service.reload()
labels = service.attrs['Spec']['Labels']
assert labels == {'service.label': 'SampleLabel'}
def test_update_retains_container_labels(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
# ContainerSpec arguments
image="alpine",
command="sleep 300",
container_labels={'container.label': 'SampleLabel'}
)
service.update(
# create argument
name=service.name,
# ContainerSpec argument
command="sleep 600"
)
service.reload()
container_spec = service.attrs['Spec']['TaskTemplate']['ContainerSpec']
assert container_spec['Labels'] == {'container.label': 'SampleLabel'}
def test_update_remove_service_labels(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
labels={'service.label': 'SampleLabel'},
# ContainerSpec arguments
image="alpine",
command="sleep 300"
)
service.update(
# create argument
name=service.name,
labels={},
# ContainerSpec argument
command="sleep 600"
)
service.reload()
assert not service.attrs['Spec'].get('Labels')
def test_update_retains_networks(self):
client = docker.from_env(version=TEST_API_VERSION)
network_name = helpers.random_name()
network = client.networks.create(
network_name, driver='overlay'
)
service = client.services.create(
# create arguments
name=helpers.random_name(),
networks=[network.id],
# ContainerSpec arguments
image="alpine",
command="sleep 300"
)
service.reload()
service.update(
# create argument
name=service.name,
# ContainerSpec argument
command="sleep 600"
)
service.reload()
networks = service.attrs['Spec']['TaskTemplate']['Networks']
assert networks == [{'Target': network.id}]
def test_scale_service(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
# ContainerSpec arguments
image="alpine",
command="sleep 300"
)
tasks = []
while len(tasks) == 0:
tasks = service.tasks()
assert len(tasks) == 1
service.update(
mode=docker.types.ServiceMode('replicated', replicas=2),
)
while len(tasks) == 1:
tasks = service.tasks()
assert len(tasks) >= 2
# check that the container spec is not overridden with None
service.reload()
spec = service.attrs['Spec']['TaskTemplate']['ContainerSpec']
assert spec.get('Command') == ['sleep', '300']
def test_scale_method_service(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
# ContainerSpec arguments
image="alpine",
command="sleep 300",
)
tasks = []
while len(tasks) == 0:
tasks = service.tasks()
assert len(tasks) == 1
service.scale(2)
while len(tasks) == 1:
tasks = service.tasks()
assert len(tasks) >= 2
# check that the container spec is not overridden with None
service.reload()
spec = service.attrs['Spec']['TaskTemplate']['ContainerSpec']
assert spec.get('Command') == ['sleep', '300']
def test_scale_method_global_service(self):
client = docker.from_env(version=TEST_API_VERSION)
mode = ServiceMode('global')
service = client.services.create(
name=helpers.random_name(),
image="alpine",
command="sleep 300",
mode=mode
)
tasks = []
while len(tasks) == 0:
tasks = service.tasks()
assert len(tasks) == 1
with self.assertRaises(InvalidArgument,
msg='Cannot scale a global container'):
service.scale(2)
assert len(tasks) == 1
service.reload()
spec = service.attrs['Spec']['TaskTemplate']['ContainerSpec']
assert spec.get('Command') == ['sleep', '300']
@helpers.requires_api_version('1.25')
def test_restart_service(self):
client = docker.from_env(version=TEST_API_VERSION)
service = client.services.create(
# create arguments
name=helpers.random_name(),
# ContainerSpec arguments
image="alpine",
command="sleep 300"
)
initial_version = service.version
service.update(
# create argument
name=service.name,
# task template argument
force_update=10,
# ContainerSpec argument
command="sleep 600"
)
service.reload()
assert service.version > initial_version
|
