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"""Test user-overridable events.
This is currently limited to applying network config on BOOT events.
"""
import pytest
import re
import yaml
from tests.integration_tests.instances import IntegrationInstance
def _add_dummy_bridge_to_netplan(client: IntegrationInstance):
# Update netplan configuration to ensure it doesn't change on reboot
netplan = yaml.safe_load(
client.execute('cat /etc/netplan/50-cloud-init.yaml')
)
# Just a dummy bridge to do nothing
try:
netplan['network']['bridges']['dummy0'] = {'dhcp4': False}
except KeyError:
netplan['network']['bridges'] = {'dummy0': {'dhcp4': False}}
dumped_netplan = yaml.dump(netplan)
client.write_to_file('/etc/netplan/50-cloud-init.yaml', dumped_netplan)
@pytest.mark.lxd_container
@pytest.mark.lxd_vm
@pytest.mark.ec2
@pytest.mark.gce
@pytest.mark.oci
@pytest.mark.openstack
@pytest.mark.azure
@pytest.mark.not_xenial
def test_boot_event_disabled_by_default(client: IntegrationInstance):
log = client.read_from_file('/var/log/cloud-init.log')
if 'network config is disabled' in log:
pytest.skip("network config disabled. Test doesn't apply")
assert 'Applying network configuration' in log
assert 'dummy0' not in client.execute('ls /sys/class/net')
_add_dummy_bridge_to_netplan(client)
client.execute('rm /var/log/cloud-init.log')
client.restart()
log2 = client.read_from_file('/var/log/cloud-init.log')
if 'cache invalid in datasource' in log2:
# Invalid cache will get cleared, meaning we'll create a new
# "instance" and apply networking config, so events aren't
# really relevant here
pytest.skip("Test only valid for existing instances")
# We attempt to apply network config twice on every boot.
# Ensure neither time works.
assert 2 == len(
re.findall(r"Event Denied: scopes=\['network'\] EventType=boot[^-]",
log2)
)
assert 2 == log2.count(
"Event Denied: scopes=['network'] EventType=boot-legacy"
)
assert 2 == log2.count(
"No network config applied. Neither a new instance"
" nor datasource network update allowed"
)
assert 'dummy0' in client.execute('ls /sys/class/net')
def _test_network_config_applied_on_reboot(client: IntegrationInstance):
log = client.read_from_file('/var/log/cloud-init.log')
if 'network config is disabled' in log:
pytest.skip("network config disabled. Test doesn't apply")
assert 'Applying network configuration' in log
assert 'dummy0' not in client.execute('ls /sys/class/net')
_add_dummy_bridge_to_netplan(client)
client.execute('rm /var/log/cloud-init.log')
client.restart()
log = client.read_from_file('/var/log/cloud-init.log')
if 'cache invalid in datasource' in log:
# Invalid cache will get cleared, meaning we'll create a new
# "instance" and apply networking config, so events aren't
# really relevant here
pytest.skip("Test only valid for existing instances")
assert 'Event Allowed: scope=network EventType=boot' in log
assert 'Applying network configuration' in log
assert 'dummy0' not in client.execute('ls /sys/class/net')
USER_DATA = """\
#cloud-config
updates:
network:
when: [boot]
"""
@pytest.mark.not_xenial
@pytest.mark.user_data(USER_DATA)
def test_boot_event_enabled(client: IntegrationInstance):
_test_network_config_applied_on_reboot(client)
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