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import pytest
from openshift_checks import OpenShiftCheckException
from openshift_checks.docker_storage import DockerStorage
def dummy_check(execute_module=None):
def dummy_exec(self, status, task_vars):
raise Exception("dummy executor called")
return DockerStorage(execute_module=execute_module or dummy_exec)
@pytest.mark.parametrize('is_containerized, group_names, is_active', [
(False, ["masters", "etcd"], False),
(False, ["masters", "nodes"], True),
(True, ["etcd"], True),
])
def test_is_active(is_containerized, group_names, is_active):
task_vars = dict(
openshift=dict(common=dict(is_containerized=is_containerized)),
group_names=group_names,
)
assert DockerStorage.is_active(task_vars=task_vars) == is_active
non_atomic_task_vars = {"openshift": {"common": {"is_atomic": False}}}
@pytest.mark.parametrize('docker_info, failed, expect_msg', [
(
dict(failed=True, msg="Error connecting: Error while fetching server API version"),
True,
["Is docker running on this host?"],
),
(
dict(msg="I have no info"),
True,
["missing info"],
),
(
dict(info={
"Driver": "devicemapper",
"DriverStatus": [("Pool Name", "docker-docker--pool")],
}),
False,
[],
),
(
dict(info={
"Driver": "devicemapper",
"DriverStatus": [("Data loop file", "true")],
}),
True,
["loopback devices with the Docker devicemapper storage driver"],
),
(
dict(info={
"Driver": "overlay2",
"DriverStatus": []
}),
False,
[],
),
(
dict(info={
"Driver": "overlay",
}),
True,
["unsupported Docker storage driver"],
),
(
dict(info={
"Driver": "unsupported",
}),
True,
["unsupported Docker storage driver"],
),
])
def test_check_storage_driver(docker_info, failed, expect_msg):
def execute_module(module_name, module_args, tmp=None, task_vars=None):
if module_name == "yum":
return {}
if module_name != "docker_info":
raise ValueError("not expecting module " + module_name)
return docker_info
check = dummy_check(execute_module=execute_module)
check._check_dm_usage = lambda status, task_vars: dict() # stub out for this test
result = check.run(tmp=None, task_vars=non_atomic_task_vars)
if failed:
assert result["failed"]
else:
assert not result.get("failed", False)
for word in expect_msg:
assert word in result["msg"]
enough_space = {
"Pool Name": "docker--vg-docker--pool",
"Data Space Used": "19.92 MB",
"Data Space Total": "8.535 GB",
"Metadata Space Used": "40.96 kB",
"Metadata Space Total": "25.17 MB",
}
not_enough_space = {
"Pool Name": "docker--vg-docker--pool",
"Data Space Used": "10 GB",
"Data Space Total": "10 GB",
"Metadata Space Used": "42 kB",
"Metadata Space Total": "43 kB",
}
@pytest.mark.parametrize('task_vars, driver_status, vg_free, success, expect_msg', [
(
{"max_thinpool_data_usage_percent": "not a float"},
enough_space,
"12g",
False,
["is not a percentage"],
),
(
{},
{}, # empty values from driver status
"bogus", # also does not parse as bytes
False,
["Could not interpret", "as bytes"],
),
(
{},
enough_space,
"12.00g",
True,
[],
),
(
{},
not_enough_space,
"0.00",
False,
["data usage", "metadata usage", "higher than threshold"],
),
])
def test_dm_usage(task_vars, driver_status, vg_free, success, expect_msg):
check = dummy_check()
check._get_vg_free = lambda pool, task_vars: vg_free
result = check._check_dm_usage(driver_status, task_vars)
result_success = not result.get("failed")
assert result_success is success
for msg in expect_msg:
assert msg in result["msg"]
@pytest.mark.parametrize('pool, command_returns, raises, returns', [
(
"foo-bar",
{ # vgs missing
"msg": "[Errno 2] No such file or directory",
"failed": True,
"cmd": "/sbin/vgs",
"rc": 2,
},
"Failed to run /sbin/vgs",
None,
),
(
"foo", # no hyphen in name - should not happen
{},
"name does not have the expected format",
None,
),
(
"foo-bar",
dict(stdout=" 4.00g\n"),
None,
"4.00g",
),
(
"foo-bar",
dict(stdout="\n"), # no matching VG
"vgs did not find this VG",
None,
)
])
def test_vg_free(pool, command_returns, raises, returns):
def execute_module(module_name, module_args, tmp=None, task_vars=None):
if module_name != "command":
raise ValueError("not expecting module " + module_name)
return command_returns
check = dummy_check(execute_module=execute_module)
if raises:
with pytest.raises(OpenShiftCheckException) as err:
check._get_vg_free(pool, {})
assert raises in str(err.value)
else:
ret = check._get_vg_free(pool, {})
assert ret == returns
@pytest.mark.parametrize('string, expect_bytes', [
("12", 12.0),
("12 k", 12.0 * 1024),
("42.42 MB", 42.42 * 1024**2),
("12g", 12.0 * 1024**3),
])
def test_convert_to_bytes(string, expect_bytes):
got = DockerStorage._convert_to_bytes(string)
assert got == expect_bytes
@pytest.mark.parametrize('string', [
"bork",
"42 Qs",
])
def test_convert_to_bytes_error(string):
with pytest.raises(ValueError) as err:
DockerStorage._convert_to_bytes(string)
assert "Cannot convert" in str(err.value)
assert string in str(err.value)
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