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# This file is part of cloud-init. See LICENSE file for license information.
import logging
import os
import uuid
from enum import Enum
from tempfile import NamedTemporaryFile
from pycloudlib.instance import BaseInstance
from pycloudlib.result import Result
from tests.integration_tests import integration_settings
from tests.integration_tests.decorators import retry
try:
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from tests.integration_tests.clouds import ( # noqa: F401
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
UPGRADE = 6
def installs_new_version(self):
return self.name not in [self.NONE.name, self.IN_PLACE.name]
class IntegrationInstance:
def __init__(
self,
cloud: "IntegrationCloud",
instance: BaseInstance,
settings=integration_settings,
):
self.cloud = cloud
self.instance = instance
self.settings = settings
self._ip = ""
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)
assert self.execute("mv {} {}".format(tmp_path, str(remote_path))).ok
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,
clean=True,
):
if source == CloudInitSource.DEB_PACKAGE:
self.install_deb()
elif source == CloudInitSource.PPA:
self.install_ppa()
elif source == CloudInitSource.PROPOSED:
self.install_proposed_image()
elif source == CloudInitSource.UPGRADE:
self.upgrade_cloud_init()
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)
if clean:
self.instance.clean()
if take_snapshot:
snapshot_id = self.snapshot()
self.cloud.snapshot_id = snapshot_id
# assert with retry because we can compete with apt already running in the
# background and get: E: Could not get lock /var/lib/apt/lists/lock - open
# (11: Resource temporarily unavailable)
@retry(tries=30, delay=1)
def install_proposed_image(self):
log.info("Installing proposed image")
assert self.execute(
'echo deb "http://archive.ubuntu.com/ubuntu '
'$(lsb_release -sc)-proposed main" >> '
"/etc/apt/sources.list.d/proposed.list"
).ok
assert self.execute("apt-get update -q").ok
assert self.execute("apt-get install -qy cloud-init").ok
@retry(tries=30, delay=1)
def install_ppa(self):
log.info("Installing PPA")
assert self.execute(
"add-apt-repository {} -y".format(self.settings.CLOUD_INIT_SOURCE)
).ok
assert self.execute("apt-get update -q").ok
assert self.execute("apt-get install -qy cloud-init").ok
@retry(tries=30, delay=1)
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,
)
assert self.execute("dpkg -i {path}".format(path=remote_path)).ok
@retry(tries=30, delay=1)
def upgrade_cloud_init(self):
log.info("Upgrading cloud-init to latest version in archive")
assert self.execute("apt-get update -q").ok
assert self.execute("apt-get install -qy cloud-init").ok
def ip(self) -> str:
if self._ip:
return self._ip
try:
self._ip = self.instance.ip
except NotImplementedError:
self._ip = "Unknown"
return self._ip
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
if not self.settings.KEEP_INSTANCE:
self.destroy()
else:
log.info("Keeping Instance, public ip: %s", self.ip())
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