__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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For_More_Tools:
import logging
from enum import Enum
from functools import lru_cache
from typing import Dict, Optional, Tuple, Type # noqa: F401
from uaclient import clouds, exceptions, messages, system, util
from uaclient.config import apply_config_settings_override
LOG = logging.getLogger(util.replace_top_level_logger_name(__name__))
CLOUD_TYPE_TO_TITLE = {
"aws": "AWS",
"aws-china": "AWS China",
"aws-gov": "AWS Gov",
"azure": "Azure",
"gce": "GCP",
}
PRO_CLOUD_URLS = {
"aws": messages.urls.PRO_ON_AWS_HOME_PAGE,
"azure": messages.urls.PRO_ON_AZURE_HOME_PAGE,
"gce": messages.urls.PRO_ON_GCP_HOME_PAGE,
}
class NoCloudTypeReason(Enum):
NO_CLOUD_DETECTED = 0
CLOUD_ID_ERROR = 1
def get_instance_id() -> Optional[str]:
"""Query cloud instance-id from cmdline."""
try:
# Present in cloud-init on >= Xenial
out, _err = system.subp(["cloud-init", "query", "instance_id"])
return out.strip()
except exceptions.ProcessExecutionError:
pass
LOG.warning("Unable to determine current instance-id")
return None
@lru_cache(maxsize=None)
@apply_config_settings_override("cloud_type")
def get_cloud_type() -> Tuple[Optional[str], Optional[NoCloudTypeReason]]:
if system.which("cloud-id"):
# Present in cloud-init on >= Xenial
try:
out, _err = system.subp(["cloud-id"])
return (out.strip(), None)
except exceptions.ProcessExecutionError as exc:
LOG.debug("error running cloud-id: %s", str(exc))
return (None, NoCloudTypeReason.CLOUD_ID_ERROR)
# If no cloud-id command, assume not on cloud
return (None, NoCloudTypeReason.NO_CLOUD_DETECTED)
def cloud_instance_factory(
cloud_override: Optional[str] = None,
) -> clouds.AutoAttachInstance:
"""
:raises CloudFactoryError: if no cloud instance object can be constructed
:raises CloudFactoryNoCloudError: if no cloud instance object can be
constructed because we are not on a cloud
:raises CloudFactoryUnsupportedCloudError: if no cloud instance object can
be constructed because we don't have a class for the cloud we're on
:raises CloudFactoryNonViableCloudError: if no cloud instance object can be
constructed because we explicitly do not support the cloud we're on
"""
from uaclient.clouds import aws, azure, gcp, lxd
cloud_instance_map = {
"aws": aws.AWSAutoAttachInstance,
"aws-china": aws.AWSAutoAttachInstance,
"aws-gov": aws.AWSAutoAttachInstance,
"azure": azure.AzureAutoAttachInstance,
"gce": gcp.GCPAutoAttachInstance,
"lxd": lxd.LXDAutoAttachInstance,
} # type: Dict[str, Type[clouds.AutoAttachInstance]]
if cloud_override is not None:
cloud_type = cloud_override
else:
cloud_type, _ = get_cloud_type()
if not cloud_type:
raise exceptions.CloudFactoryNoCloudError()
cls = cloud_instance_map.get(cloud_type)
if not cls:
raise exceptions.NonAutoAttachImageError(cloud_type=cloud_type)
instance = cls()
if not instance.is_viable:
raise exceptions.CloudFactoryNonViableCloudError()
return instance