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# This file is part of cloud-init. See LICENSE file for license information.
from enum import Enum
import logging
import os
import uuid
from tempfile import NamedTemporaryFile
from pycloudlib.instance import BaseInstance
from pycloudlib.result import Result
from tests.integration_tests import integration_settings
try:
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from tests.integration_tests.clouds import IntegrationCloud
except ImportError:
pass
log = logging.getLogger('integration_testing')
def _get_tmp_path():
tmp_filename = str(uuid.uuid4())
return '/var/tmp/{}.tmp'.format(tmp_filename)
class CloudInitSource(Enum):
"""Represents the cloud-init image source setting as a defined value.
Values here represent all possible values for CLOUD_INIT_SOURCE in
tests/integration_tests/integration_settings.py. See that file for an
explanation of these values. If the value set there can't be parsed into
one of these values, an exception will be raised
"""
NONE = 1
IN_PLACE = 2
PROPOSED = 3
PPA = 4
DEB_PACKAGE = 5
def installs_new_version(self):
if self.name in [self.NONE.name, self.IN_PLACE.name]:
return False
return True
class IntegrationInstance:
def __init__(self, cloud: 'IntegrationCloud', instance: BaseInstance,
settings=integration_settings):
self.cloud = cloud
self.instance = instance
self.settings = settings
def destroy(self):
self.instance.delete()
def restart(self):
"""Restart this instance (via cloud mechanism) and wait for boot.
This wraps pycloudlib's `BaseInstance.restart`
"""
log.info("Restarting instance and waiting for boot")
self.instance.restart()
def execute(self, command, *, use_sudo=True) -> Result:
if self.instance.username == 'root' and use_sudo is False:
raise Exception('Root user cannot run unprivileged')
return self.instance.execute(command, use_sudo=use_sudo)
def pull_file(self, remote_path, local_path):
# First copy to a temporary directory because of permissions issues
tmp_path = _get_tmp_path()
self.instance.execute('cp {} {}'.format(str(remote_path), tmp_path))
self.instance.pull_file(tmp_path, str(local_path))
def push_file(self, local_path, remote_path):
# First push to a temporary directory because of permissions issues
tmp_path = _get_tmp_path()
self.instance.push_file(str(local_path), tmp_path)
self.execute('mv {} {}'.format(tmp_path, str(remote_path)))
def read_from_file(self, remote_path) -> str:
result = self.execute('cat {}'.format(remote_path))
if result.failed:
# TODO: Raise here whatever pycloudlib raises when it has
# a consistent error response
raise IOError(
'Failed reading remote file via cat: {}\n'
'Return code: {}\n'
'Stderr: {}\n'
'Stdout: {}'.format(
remote_path, result.return_code,
result.stderr, result.stdout)
)
return result.stdout
def write_to_file(self, remote_path, contents: str):
# Writes file locally and then pushes it rather
# than writing the file directly on the instance
with NamedTemporaryFile('w', delete=False) as tmp_file:
tmp_file.write(contents)
try:
self.push_file(tmp_file.name, remote_path)
finally:
os.unlink(tmp_file.name)
def snapshot(self):
image_id = self.cloud.snapshot(self.instance)
log.info('Created new image: %s', image_id)
return image_id
def install_new_cloud_init(
self,
source: CloudInitSource,
take_snapshot=True
):
if source == CloudInitSource.DEB_PACKAGE:
self.install_deb()
elif source == CloudInitSource.PPA:
self.install_ppa()
elif source == CloudInitSource.PROPOSED:
self.install_proposed_image()
else:
raise Exception(
"Specified to install {} which isn't supported here".format(
source)
)
version = self.execute('cloud-init -v').split()[-1]
log.info('Installed cloud-init version: %s', version)
self.instance.clean()
if take_snapshot:
snapshot_id = self.snapshot()
self.cloud.snapshot_id = snapshot_id
def install_proposed_image(self):
log.info('Installing proposed image')
remote_script = (
'echo deb "http://archive.ubuntu.com/ubuntu '
'$(lsb_release -sc)-proposed main" | '
'tee /etc/apt/sources.list.d/proposed.list\n'
'apt-get update -q\n'
'apt-get install -qy cloud-init'
)
self.execute(remote_script)
def install_ppa(self):
log.info('Installing PPA')
remote_script = (
'add-apt-repository {repo} -y && '
'apt-get update -q && '
'apt-get install -qy cloud-init'
).format(repo=self.settings.CLOUD_INIT_SOURCE)
self.execute(remote_script)
def install_deb(self):
log.info('Installing deb package')
deb_path = integration_settings.CLOUD_INIT_SOURCE
deb_name = os.path.basename(deb_path)
remote_path = '/var/tmp/{}'.format(deb_name)
self.push_file(
local_path=integration_settings.CLOUD_INIT_SOURCE,
remote_path=remote_path)
remote_script = 'dpkg -i {path}'.format(path=remote_path)
self.execute(remote_script)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
if not self.settings.KEEP_INSTANCE:
self.destroy()
class IntegrationEc2Instance(IntegrationInstance):
pass
class IntegrationGceInstance(IntegrationInstance):
pass
class IntegrationAzureInstance(IntegrationInstance):
pass
class IntegrationOciInstance(IntegrationInstance):
pass
class IntegrationLxdInstance(IntegrationInstance):
pass
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