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# This file is part of cloud-init. See LICENSE file for license information.
import copy
import os
import pytest
from cloudinit import atomic_helper, safeyaml, stages, util
from cloudinit.config.modules import Modules
from cloudinit.settings import PER_INSTANCE
from cloudinit.sources import NetworkConfigSource
from tests.unittests.helpers import replicate_test_root
@pytest.fixture(autouse=True)
def replicate_root(tmp_path):
replicate_test_root("simple_ubuntu", str(tmp_path))
@pytest.fixture(autouse=True)
def cfg(mocker, tmp_path):
new_root = str(tmp_path)
_cfg = {
"datasource_list": ["None"],
"runcmd": ["ls /etc"], # test ALL_DISTROS
"spacewalk": {}, # test non-ubuntu distros module definition
"system_info": {
"paths": {"run_dir": new_root},
"distro": "ubuntu",
},
"write_files": [
{
"path": "/etc/blah.ini",
"content": "blah",
"permissions": 0o755,
},
],
"cloud_init_modules": ["write_files", "spacewalk", "runcmd"],
}
cloud_cfg = safeyaml.dumps(_cfg)
util.ensure_dir(os.path.join(new_root, "etc", "cloud"))
util.write_file(
os.path.join(new_root, "etc", "cloud", "cloud.cfg"), cloud_cfg
)
mocker.patch("cloudinit.util.os.chown")
return _cfg
@pytest.mark.usefixtures("fake_filesystem")
class TestSimpleRun:
def test_none_ds_populates_var_lib_cloud(self):
"""Init and run_section default behavior creates appropriate dirs."""
# Now start verifying whats created
netcfg = {
"version": 1,
"config": [{"type": "physical", "name": "eth9"}],
}
def fake_network_config():
return netcfg, NetworkConfigSource.FALLBACK
assert not os.path.exists("/var/lib/cloud")
initer = stages.Init()
initer.read_cfg()
initer.initialize()
assert os.path.exists("/var/lib/cloud")
for d in ["scripts", "seed", "instances", "handlers", "sem", "data"]:
assert os.path.isdir(os.path.join("/var/lib/cloud", d))
initer.fetch()
assert not os.path.islink("var/lib/cloud/instance")
iid = initer.instancify()
assert iid == "iid-datasource-none"
initer.update()
assert os.path.islink("var/lib/cloud/instance")
initer._find_networking_config = fake_network_config
assert not os.path.exists(
"/var/lib/cloud/instance/network-config.json"
)
initer.apply_network_config(False)
assert f"{atomic_helper.json_dumps(netcfg)}\n" == util.load_text_file(
"/var/lib/cloud/instance/network-config.json"
)
def test_none_ds_runs_modules_which_do_not_define_distros(self, caplog):
"""Any modules which do not define a distros attribute are run."""
initer = stages.Init()
initer.read_cfg()
initer.initialize()
initer.fetch()
initer.instancify()
initer.update()
initer.cloudify().run(
"consume_data",
initer.consume_data,
args=[PER_INSTANCE],
freq=PER_INSTANCE,
)
mods = Modules(initer)
(which_ran, failures) = mods.run_section("cloud_init_modules")
assert not failures
assert os.path.exists("/etc/blah.ini")
assert "write_files" in which_ran
contents = util.load_text_file("/etc/blah.ini")
assert contents == "blah"
assert (
"Skipping modules ['write_files'] because they are not verified on"
" distro 'ubuntu'" not in caplog.text
)
def test_none_ds_skips_modules_which_define_unmatched_distros(
self, caplog
):
"""Skip modules which define distros which don't match the current."""
initer = stages.Init()
initer.read_cfg()
initer.initialize()
initer.fetch()
initer.instancify()
initer.update()
initer.cloudify().run(
"consume_data",
initer.consume_data,
args=[PER_INSTANCE],
freq=PER_INSTANCE,
)
mods = Modules(initer)
(which_ran, failures) = mods.run_section("cloud_init_modules")
assert not failures
assert (
"Skipping modules 'spacewalk' because they are not verified on"
" distro 'ubuntu'" in caplog.text
)
assert "spacewalk" not in which_ran
def test_none_ds_runs_modules_which_distros_all(self, caplog):
"""Skip modules which define distros attribute as supporting 'all'.
This is done in the module with the declaration:
distros = [ALL_DISTROS]. runcmd is an example.
"""
initer = stages.Init()
initer.read_cfg()
initer.initialize()
initer.fetch()
initer.instancify()
initer.update()
initer.cloudify().run(
"consume_data",
initer.consume_data,
args=[PER_INSTANCE],
freq=PER_INSTANCE,
)
mods = Modules(initer)
(which_ran, failures) = mods.run_section("cloud_init_modules")
assert not failures
assert "runcmd" in which_ran
assert (
"Skipping modules 'runcmd' because they are not verified on"
" distro 'ubuntu'" not in caplog.text
)
def test_none_ds_forces_run_via_unverified_modules(self, caplog, cfg):
"""run_section forced skipped modules by using unverified_modules."""
# re-write cloud.cfg with unverified_modules override
cfg = copy.deepcopy(cfg)
cfg["unverified_modules"] = ["spacewalk"] # Would have skipped
cloud_cfg = safeyaml.dumps(cfg)
util.ensure_dir(os.path.join("/etc", "cloud"))
util.write_file(os.path.join("/etc", "cloud", "cloud.cfg"), cloud_cfg)
initer = stages.Init()
initer.read_cfg()
initer.initialize()
initer.fetch()
initer.instancify()
initer.update()
initer.cloudify().run(
"consume_data",
initer.consume_data,
args=[PER_INSTANCE],
freq=PER_INSTANCE,
)
mods = Modules(initer)
(which_ran, failures) = mods.run_section("cloud_init_modules")
assert not failures
assert "spacewalk" in which_ran
assert "running unverified_modules: 'spacewalk'" in caplog.text
def test_none_ds_run_with_no_config_modules(self, cfg):
"""run_section will report no modules run when none are configured."""
# re-write cloud.cfg with unverified_modules override
cfg = copy.deepcopy(cfg)
# Represent empty configuration in /etc/cloud/cloud.cfg
cfg["cloud_init_modules"] = None
cloud_cfg = safeyaml.dumps(cfg)
util.ensure_dir(os.path.join("/etc", "cloud"))
util.write_file(os.path.join("/etc", "cloud", "cloud.cfg"), cloud_cfg)
initer = stages.Init()
initer.read_cfg()
initer.initialize()
initer.fetch()
initer.instancify()
initer.update()
initer.cloudify().run(
"consume_data",
initer.consume_data,
args=[PER_INSTANCE],
freq=PER_INSTANCE,
)
mods = Modules(initer)
(which_ran, failures) = mods.run_section("cloud_init_modules")
assert not failures
assert [] == which_ran
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