def test_pool3(client):
"""
Tests that when getting docker hosts, hosts with half-open circuits are returned
"""
with client.application.app_context():
pool = DockerPool(([None, ["localhost:1234"], 2], ))
executor = Executor(client.application, pool)
executor.get_circuit("localhost:1234").half_open()
host, port, client = pool.get_client(executor, "test-123")
expect(host).to_equal("localhost")
expect(port).to_equal(1234)
def test_pool2(client):
"""
Tests that when getting docker hosts, hosts in the blacklist are not returned
"""
with client.application.app_context():
pool = DockerPool(([None, ["localhost:1234", "localhost:4567"], 2], ))
executor = Executor(client.application, pool)
host, port, client = pool.get_client(executor,
"test-123",
blacklist=set(["localhost:4567"]))
expect(host).to_equal("localhost")
expect(port).to_equal(1234)
def test_pool6(client):
"""
Tests getting client when no farms match raises
"""
with client.application.app_context():
pool = DockerPool(
([re.compile(r"test-.+"), ["localhost:1234", "localhost:4567"],
2], ))
executor = Executor(client.application, pool=pool)
message = "Failed to find a docker host for task id qwe-123."
with expect.error_to_happen(NoAvailableHostsError, message=message):
pool.get_client(executor, "qwe-123")
def test_circuit6(client):
"""
Tests that when marking a container as done with a
docker host that's not accessible, the circuit is open and
a HostUnavailableError is raised
"""
with client.application.app_context():
client.application.config["DOCKER_CIRCUIT_BREAKER_MAX_FAILS"] = 1
task, job, execution = JobExecutionFixture.new_defaults(
docker_host="localhost",
docker_port=4567,
container_id=str(uuid4()))
pool = DockerPool(([None, ["localhost:4567"], 2], ))
executor = Executor(client.application, pool)
expect(executor.get_circuit("localhost:4567").current_state).to_equal(
"closed")
with expect.error_to_happen(HostUnavailableError):
executor.mark_as_done(task, job, execution)
expect(executor.get_circuit("localhost:4567").current_state).to_equal(
"open")
def test_circuit1(client):
"""
Tests that when updating with a docker host that's not accessible,
the circuit is open and a HostUnavailableError is raised
"""
with client.application.app_context():
client.application.config["DOCKER_CIRCUIT_BREAKER_MAX_FAILS"] = 2
task, job, execution = JobExecutionFixture.new_defaults(
docker_host="localhost", docker_port=4567)
pool = DockerPool(([None, ["localhost:4567"], 2], ))
executor = Executor(client.application, pool)
expect(executor.get_circuit("localhost:4567").current_state).to_equal(
"closed")
with expect.error_to_happen(HostUnavailableError):
executor.update_image(task, job, execution, "ubuntu", "latest")
expect(executor.get_circuit("localhost:4567").current_state).to_equal(
"open")
