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# This file is part of cloud-init. See LICENSE file for license information.
"""Base Azure Cloud instance."""
from datetime import datetime, timedelta
from urllib.parse import urlparse
from time import sleep
import traceback
import os
# pylint: disable=no-name-in-module
from azure.storage.blob import BlockBlobService, BlobPermissions
from msrestazure.azure_exceptions import CloudError
from tests.cloud_tests import LOG
from ..instances import Instance
class AzureCloudInstance(Instance):
"""Azure Cloud backed instance."""
platform_name = 'azurecloud'
def __init__(self, platform, properties, config,
features, image_id, user_data=None):
"""Set up instance.
@param platform: platform object
@param properties: dictionary of properties
@param config: dictionary of configuration values
@param features: dictionary of supported feature flags
@param image_id: image to find and/or use
@param user_data: test user-data to pass to instance
"""
super(AzureCloudInstance, self).__init__(
platform, image_id, properties, config, features)
self.ssh_port = 22
self.ssh_ip = None
self.instance = None
self.image_id = image_id
self.user_data = user_data
self.ssh_key_file = os.path.join(
platform.config['data_dir'], platform.config['private_key'])
self.ssh_pubkey_file = os.path.join(
platform.config['data_dir'], platform.config['public_key'])
self.blob_client, self.container, self.blob = None, None, None
def start(self, wait=True, wait_for_cloud_init=False):
"""Start instance with the platforms NIC."""
if self.instance:
return
data = self.image_id.split('-')
release, support = data[2].replace('_', '.'), data[3]
sku = '%s-%s' % (release, support) if support == 'LTS' else release
image_resource_id = '/subscriptions/%s' \
'/resourceGroups/%s' \
'/providers/Microsoft.Compute/images/%s' % (
self.platform.subscription_id,
self.platform.resource_group.name,
self.image_id)
storage_uri = "http://%s.blob.core.windows.net" \
% self.platform.storage.name
with open(self.ssh_pubkey_file, 'r') as key:
ssh_pub_keydata = key.read()
image_exists = False
try:
LOG.debug('finding image in resource group using image_id')
self.platform.compute_client.images.get(
self.platform.resource_group.name,
self.image_id
)
image_exists = True
LOG.debug('image found, launching instance')
except CloudError:
LOG.debug(
'image not found, launching instance with base image')
pass
vm_params = {
'location': self.platform.location,
'os_profile': {
'computer_name': 'CI',
'admin_username': self.ssh_username,
"customData": self.user_data,
"linuxConfiguration": {
"disable_password_authentication": True,
"ssh": {
"public_keys": [{
"path": "/home/%s/.ssh/authorized_keys" %
self.ssh_username,
"keyData": ssh_pub_keydata
}]
}
}
},
"diagnosticsProfile": {
"bootDiagnostics": {
"storageUri": storage_uri,
"enabled": True
}
},
'hardware_profile': {
'vm_size': self.platform.vm_size
},
'storage_profile': {
'image_reference': {
'id': image_resource_id
} if image_exists else {
'publisher': 'Canonical',
'offer': 'UbuntuServer',
'sku': sku,
'version': 'latest'
}
},
'network_profile': {
'network_interfaces': [{
'id': self.platform.nic.id
}]
},
'tags': {
'Name': self.platform.tag,
}
}
try:
self.instance = self.platform.compute_client.virtual_machines.\
create_or_update(self.platform.resource_group.name,
self.image_id, vm_params)
except CloudError:
raise RuntimeError('failed creating instance:\n{}'.format(
traceback.format_exc()))
if wait:
self.instance.wait()
self.ssh_ip = self.platform.network_client.\
public_ip_addresses.get(
self.platform.resource_group.name,
self.platform.public_ip.name
).ip_address
self._wait_for_system(wait_for_cloud_init)
self.instance = self.instance.result()
self.blob_client, self.container, self.blob =\
self._get_blob_client()
def shutdown(self, wait=True):
"""Finds console log then stopping/deallocates VM"""
LOG.debug('waiting on console log before stopping')
attempts, exists = 5, False
while not exists and attempts:
try:
attempts -= 1
exists = self.blob_client.get_blob_to_bytes(
self.container, self.blob)
LOG.debug('found console log')
except Exception as e:
if attempts:
LOG.debug('Unable to find console log, '
'%s attempts remaining', attempts)
sleep(15)
else:
LOG.warning('Could not find console log: %s', e)
pass
LOG.debug('stopping instance %s', self.image_id)
vm_deallocate = \
self.platform.compute_client.virtual_machines.deallocate(
self.platform.resource_group.name, self.image_id)
if wait:
vm_deallocate.wait()
def destroy(self):
"""Delete VM and close all connections"""
if self.instance:
LOG.debug('destroying instance: %s', self.image_id)
vm_delete = self.platform.compute_client.virtual_machines.delete(
self.platform.resource_group.name, self.image_id)
vm_delete.wait()
self._ssh_close()
super(AzureCloudInstance, self).destroy()
def _execute(self, command, stdin=None, env=None):
"""Execute command on instance."""
env_args = []
if env:
env_args = ['env'] + ["%s=%s" for k, v in env.items()]
return self._ssh(['sudo'] + env_args + list(command), stdin=stdin)
def _get_blob_client(self):
"""
Use VM details to retrieve container and blob name.
Then Create blob service client for sas token to
retrieve console log.
:return: blob service, container name, blob name
"""
LOG.debug('creating blob service for console log')
storage = self.platform.storage_client.storage_accounts.get_properties(
self.platform.resource_group.name, self.platform.storage.name)
keys = self.platform.storage_client.storage_accounts.list_keys(
self.platform.resource_group.name, self.platform.storage.name
).keys[0].value
virtual_machine = self.platform.compute_client.virtual_machines.get(
self.platform.resource_group.name, self.instance.name,
expand='instanceView')
blob_uri = virtual_machine.instance_view.boot_diagnostics.\
serial_console_log_blob_uri
container, blob = urlparse(blob_uri).path.split('/')[-2:]
blob_client = BlockBlobService(
account_name=storage.name,
account_key=keys)
sas = blob_client.generate_blob_shared_access_signature(
container_name=container, blob_name=blob, protocol='https',
expiry=datetime.utcnow() + timedelta(hours=1),
permission=BlobPermissions.READ)
blob_client = BlockBlobService(
account_name=storage.name,
sas_token=sas)
return blob_client, container, blob
def console_log(self):
"""Instance console.
@return_value: bytes of this instance’s console
"""
boot_diagnostics = self.blob_client.get_blob_to_bytes(
self.container, self.blob)
return boot_diagnostics.content
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