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test_generate_deployments_for_service.py
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# Copyright 2015-2016 Yelp Inc.
#
# 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.
import mock
from paasta_tools import generate_deployments_for_service
from paasta_tools.marathon_tools import MarathonServiceConfig
def test_get_deploy_group_mappings():
fake_service = "fake_service"
fake_soa_dir = "/no/yes/maybe"
fake_service_configs = [
MarathonServiceConfig(
service=fake_service,
cluster="clusterA",
instance="main",
branch_dict=None,
config_dict={"deploy_group": "no_thanks"},
),
MarathonServiceConfig(
service=fake_service,
cluster="clusterB",
instance="main",
branch_dict=None,
config_dict={"deploy_group": "try_me"},
),
]
fake_remote_refs = {
"refs/tags/paasta-try_me-20160308T053933-deploy": "123456",
"refs/tags/paasta-clusterB.main-123-stop": "123456",
"refs/tags/paasta-okay-20160308T053933-deploy": "ijowarg",
"refs/tags/paasta-no_thanks-20160308T053933-deploy": "789009",
"refs/tags/paasta-nah-20160308T053933-deploy": "j8yiomwer",
}
expected = {
"fake_service:paasta-clusterA.main": {
"docker_image": "services-fake_service:paasta-789009",
"desired_state": "start",
"force_bounce": None,
},
"fake_service:paasta-clusterB.main": {
"docker_image": "services-fake_service:paasta-123456",
"desired_state": "stop",
"force_bounce": "123",
},
}
expected_v2 = {
"deployments": {
"try_me": {
"docker_image": "services-fake_service:paasta-123456",
"git_sha": "123456",
},
"no_thanks": {
"docker_image": "services-fake_service:paasta-789009",
"git_sha": "789009",
},
},
"controls": {
"fake_service:clusterA.main": {
"desired_state": "start",
"force_bounce": None,
},
"fake_service:clusterB.main": {
"desired_state": "stop",
"force_bounce": "123",
},
},
}
with mock.patch(
"paasta_tools.generate_deployments_for_service.get_instance_configs_for_service",
return_value=fake_service_configs,
autospec=True,
) as get_instance_configs_for_service_patch, mock.patch(
"paasta_tools.remote_git.list_remote_refs",
return_value=fake_remote_refs,
autospec=True,
) as list_remote_refs_patch:
actual, actual_v2 = generate_deployments_for_service.get_deploy_group_mappings(
fake_soa_dir, fake_service
)
get_instance_configs_for_service_patch.assert_called_once_with(
soa_dir=fake_soa_dir, service=fake_service
)
assert list_remote_refs_patch.call_count == 1
assert expected == actual
assert expected_v2 == actual_v2
def test_get_service_from_docker_image():
mock_image = (
"docker-paasta.yelpcorp.com:443/"
"services-example_service:paasta-591ae8a7b3224e3b3322370b858377dd6ef335b6"
)
actual = generate_deployments_for_service.get_service_from_docker_image(mock_image)
assert "example_service" == actual
def test_main():
fake_soa_dir = "/etc/true/null"
file_mock = mock.mock_open()
with mock.patch(
"paasta_tools.generate_deployments_for_service.parse_args",
return_value=mock.Mock(
verbose=False, soa_dir=fake_soa_dir, service="fake_service"
),
autospec=True,
) as parse_patch, mock.patch(
"os.path.abspath", return_value="ABSOLUTE", autospec=True
) as abspath_patch, mock.patch(
"paasta_tools.generate_deployments_for_service.get_deploy_group_mappings",
return_value=(
{"MAP": {"docker_image": "PINGS", "desired_state": "start"}},
mock.sentinel.v2_mappings,
),
autospec=True,
) as mappings_patch, mock.patch(
"os.path.join", return_value="JOIN", autospec=True
) as join_patch, mock.patch(
"builtins.open", file_mock, autospec=None
) as open_patch, mock.patch(
"json.dump", autospec=True
) as json_dump_patch, mock.patch(
"json.load", return_value={"OLD_MAP": "PINGS"}, autospec=True
) as json_load_patch, mock.patch(
"paasta_tools.generate_deployments_for_service.atomic_file_write", autospec=True
) as atomic_file_write_patch:
generate_deployments_for_service.main()
parse_patch.assert_called_once_with()
abspath_patch.assert_called_once_with(fake_soa_dir)
mappings_patch.assert_called_once_with(
soa_dir="ABSOLUTE", service="fake_service"
),
join_patch.assert_any_call(
"ABSOLUTE", "fake_service", generate_deployments_for_service.TARGET_FILE
),
assert join_patch.call_count == 2
atomic_file_write_patch.assert_called_once_with("JOIN")
open_patch.assert_called_once_with("JOIN", "r")
json_dump_patch.assert_called_once_with(
{
"v1": {"MAP": {"docker_image": "PINGS", "desired_state": "start"}},
"v2": mock.sentinel.v2_mappings,
},
atomic_file_write_patch.return_value.__enter__.return_value,
)
json_load_patch.assert_called_once_with(
file_mock.return_value.__enter__.return_value
)
# test no update to file if content unchanged
json_load_patch.return_value = {
"v1": {"MAP": {"docker_image": "PINGS", "desired_state": "start"}},
"v2": mock.sentinel.v2_mappings,
}
json_dump_patch.reset_mock()
generate_deployments_for_service.main()
assert not json_dump_patch.called
# test IOError path
open_patch.side_effect = IOError
generate_deployments_for_service.main()
assert json_dump_patch.called
def test_get_deployments_dict():
branch_mappings = {
"app1": {
"docker_image": "image1",
"desired_state": "start",
"force_bounce": "1418951213",
},
"app2": {
"docker_image": "image2",
"desired_state": "stop",
"force_bounce": "1412345678",
},
}
v2_mappings = mock.sentinel.v2_mappings
assert generate_deployments_for_service.get_deployments_dict_from_deploy_group_mappings(
branch_mappings, v2_mappings
) == {
"v1": branch_mappings,
"v2": mock.sentinel.v2_mappings,
}
def test_get_desired_state_understands_tags():
remote_refs = {
"refs/heads/master": "7894E99E6805E9DC8C1D8EB26229E3E2243878C9",
"refs/remotes/origin/HEAD": "EE8796C4E4295B7D4087E3EB73662B99218DAD94",
"refs/remotes/origin/master": "5F7C10B320A4EDBC4773C5FEFB1CD7B7A84FCB69",
"refs/tags/paasta-paasta-cluster.instance-20150721T183905-start": "4EF01B5A574B519AB546309E89F72972A33B6B75",
"refs/tags/paasta-paasta-cluster.instance-20151106T233211-stop": "A5AB2A012DC238D4F6DD269C40A4BD3A99D52B1F",
"refs/tags/paasta-cluster.instance-20160202T233805-start": "BE68473F98F619F26FD7824B8F56F9A7ABAEB860",
"refs/tags/paasta-cluster2.someinstance-20160202T233805-start": "D6B9A0F86DC54A132FBB7747460F53F48C9AEEAD",
"refs/tags/paasta-cluster2.someinstance-20160205T182601-stop": "9085FD67ED1BB5FADAFA7F2AFAF8DEDEE7342711",
"refs/tags/paasta-cluster.instance-20160308T053933-deploy": "4EF01B5A574B519AB546309E89F72972A33B6B75",
"refs/tags/paasta-cluster2.someinstance-20160308T053933-deploy": "9085FD67ED1BB5FADAFA7F2AFAF8DEDEE7342711",
}
branch = "cluster2.someinstance"
sha = "9085FD67ED1BB5FADAFA7F2AFAF8DEDEE7342711"
expected_desired_state = ("stop", "20160205T182601")
actual = generate_deployments_for_service.get_desired_state_by_branch_and_sha(
remote_refs
)[(branch, sha)]
assert actual == expected_desired_state