def convert_image(source, dest, out_format, run_as_root=True):
"""Convert image to other format."""
cmd = ('qemu-img', 'convert', '-O', out_format, source, dest)
start_time = timeutils.utcnow()
execute(*cmd, run_as_root=True)
duration = timeutils.delta_seconds(start_time, timeutils.utcnow())
if duration < 1:
duration = 1
try:
image_size = qemu_img_info(source, run_as_root=True).virtual_size
except ValueError as e:
msg = _LI("The image was successfully converted, but image size "
"is unavailable. src %(src)s, dest %(dest)s. %(error)s")
LOG.info(msg, {"src": source, "dest": dest, "error": e})
return
fsz_mb = image_size / units.Mi
mbps = (fsz_mb / duration)
msg = ("Image conversion details: src %(src)s, size %(sz).2f MB, "
"duration %(duration).2f sec, destination %(dest)s")
LOG.debug(msg, {
"src": source,
"sz": fsz_mb,
"duration": duration,
"dest": dest
})
msg = _LI("Converted %(sz).2f MB image at %(mbps).2f MB/s")
LOG.info(msg, {"sz": fsz_mb, "mbps": mbps})
def convert_image(source, dest, out_format, run_as_root=True):
"""Convert image to other format."""
cmd = ('qemu-img', 'convert',
'-O', out_format, source, dest)
start_time = timeutils.utcnow()
execute(*cmd, run_as_root=True)
duration = timeutils.delta_seconds(start_time, timeutils.utcnow())
if duration < 1:
duration = 1
try:
image_size = qemu_img_info(source, run_as_root=True).virtual_size
except ValueError as e:
msg = _LI("The image was successfully converted, but image size "
"is unavailable. src %(src)s, dest %(dest)s. %(error)s")
LOG.info(msg, {"src": source,
"dest": dest,
"error": e})
return
fsz_mb = image_size / units.Mi
mbps = (fsz_mb / duration)
msg = ("Image conversion details: src %(src)s, size %(sz).2f MB, "
"duration %(duration).2f sec, destination %(dest)s")
LOG.debug(msg, {"src": source,
"sz": fsz_mb,
"duration": duration,
"dest": dest})
msg = _LI("Converted %(sz).2f MB image at %(mbps).2f MB/s")
LOG.info(msg, {"sz": fsz_mb, "mbps": mbps})
def get_filtered_objects(self, filter_classes, objs,
filter_properties, index=0):
"""Get objects after filter
:param filter_classes: filters that will be used to filter the
objects
:param objs: objects that will be filtered
:param filter_properties: client filter properties
:param index: This value needs to be increased in the caller
function of get_filtered_objects when handling
each resource.
"""
list_objs = list(objs)
LOG.debug("Starting with %d host(s)", len(list_objs))
for filter_cls in filter_classes:
cls_name = filter_cls.__name__
filter_class = filter_cls()
if filter_class.run_filter_for_index(index):
objs = filter_class.filter_all(list_objs, filter_properties)
if objs is None:
LOG.debug("Filter %(cls_name)s says to stop filtering",
{'cls_name': cls_name})
return
list_objs = list(objs)
msg = (_LI("Filter %(cls_name)s returned %(obj_len)d host(s)")
% {'cls_name': cls_name, 'obj_len': len(list_objs)})
if not list_objs:
LOG.info(msg)
break
LOG.debug(msg)
return list_objs
def __init__(self, destination_driver=None, service_name=None,
*args, **kwargs):
"""Load the destination driver."""
# updated_service_capabilities needs service_name to be "source".
super(DestinationManager, self).__init__(service_name='destination',
*args, **kwargs)
self.configuration = config.Configuration(destination_manager_opts,
config_group=service_name)
self.stats = {}
if not destination_driver:
# Get from configuration, which will get the default
# if its not using the multi backend.
destination_driver = self.configuration.destination_driver
svc_host = utils.extract_host(self.host)
try:
objects.Service.get_by_args(context.get_admin_context(),
svc_host, 'guts-destination')
except exception.ServiceNotFound:
LOG.info(_LI("Service not found for updating."))
self.driver = importutils.import_object(
destination_driver,
configuration=self.configuration,
host=self.host)
def resource_fetch(self, ctxt, cloud):
"""Fetches list of resources from given Clouds."""
if cloud.type != "source":
LOG.warning(_LW('Cloud %(cloud_name)s is not a Source Cloud.'),
{'cloud_name': cloud.name})
LOG.info(_LI("Fetching resources from the Cloud %(cloud_name)s."),
{'cloud_name': cloud.name})
self._resource_fetch(ctxt, cloud)
def __init__(self, service_name=None, *args, **kwargs):
super(MigrationManager, self).__init__(service_name='migration',
*args, **kwargs)
try:
svc_host = utils.extract_host(self.host)
objects.Service.get_by_args(context.get_admin_context(),
svc_host, 'guts-migration')
except exception.ServiceNotFound:
LOG.info(_LI("Service not found for updating."))
def prop_update(self, ctxt, cloud):
"""Updates properties of the Cloud."""
if cloud.type != "destination":
LOG.warning(_LW('Cloud %(cloud)s is not a destination Cloud.'),
{'cloud': cloud.name})
return
LOG.info(_LI("Fetching resources from the Cloud %(cloud)s."),
{'cloud': cloud.name})
self._prop_update(ctxt, cloud)
def _get_network(self, context, migration_ref,
resource_ref, dest_host):
network_info = ast.literal_eval(resource_ref.properties)
LOG.info(_LI('Getting network information from source hypervisor, '
'network_info: %s'), network_info)
migration_ref.migration_status = "Inprogress"
migration_ref.migration_event = "Fetching from source"
migration_ref.save()
_cast_to_destination(context, dest_host, 'create_network',
migration_ref, resource_ref, **network_info)
def register(self, ext):
# Do nothing if the extension doesn't check out
if not self._check_extension(ext):
return
alias = ext.alias
LOG.info(_LI('Loaded extension: %s'), alias)
if alias in self.extensions:
raise exception.Error("Found duplicate extension: %s" % alias)
self.extensions[alias] = ext
def _convert_disks(self, disks):
LOG.info(_LI('Disk conversion started: %s'), disks)
converted_disks = []
for disk in disks:
index = disk.keys()[0]
path = disk[index]
disk[index] = path.replace('.vmdk', '.qcow2')
utils.convert_image(path, disk[index],
'qcow2', run_as_root=False)
converted_disks.append(disk)
return converted_disks
def register(self, ext):
# Do nothing if the extension doesn't check out
if not self._check_extension(ext):
return
alias = ext.alias
LOG.info(_LI('Loaded extension: %s'), alias)
if alias in self.extensions:
raise exception.Error("Found duplicate extension: %s" % alias)
self.extensions[alias] = ext
def delete(self, req, id):
"""Deletes a Migration"""
context = req.environ['guts.context']
LOG.info(_LI("Deleting migration with ID: %s"), id, context=context)
try:
migration = objects.Migration.get_by_id(context, id)
migration.destroy()
except exception.MigrationNotFound as error:
raise exc.HTTPNotFound(explanation=error.msg)
return webob.Response(status_int=202)
def __exit__(self, ex_type, ex_value, ex_traceback):
if not ex_value:
return True
if isinstance(ex_value, exception.NotAuthorized):
raise Fault(webob.exc.HTTPForbidden(explanation=ex_value.msg))
elif isinstance(ex_value, exception.Invalid):
raise Fault(exception.ConvertedException(code=ex_value.code, explanation=ex_value.msg))
elif isinstance(ex_value, TypeError):
exc_info = (ex_type, ex_value, ex_traceback)
LOG.error(_LE("Exception handling resource: %s"), ex_value, exc_info=exc_info)
raise Fault(webob.exc.HTTPBadRequest())
elif isinstance(ex_value, Fault):
LOG.info(_LI("Fault thrown: %s"), ex_value)
raise ex_value
elif isinstance(ex_value, webob.exc.HTTPException):
LOG.info(_LI("HTTP exception thrown: %s"), ex_value)
raise Fault(ex_value)
# We didn't handle the exception
return False
def __call__(self, request):
"""WSGI method that controls (de)serialization and method dispatch."""
LOG.info(_LI("%(method)s %(url)s"), {"method": request.method, "url": request.url})
# Identify the action, its arguments, and the requested
# content type
action_args = self.get_action_args(request.environ)
action = action_args.pop("action", None)
content_type, body = self.get_body(request)
accept = request.best_match_content_type()
return self._process_stack(request, action, action_args, content_type, body, accept)
def _get_instance(self, context, migration_ref,
resource_ref, dest_host):
instance_id = resource_ref.id_at_source
LOG.info(_LI('Getting instance from source hypervisor, '
'instance_id: %s'), instance_id)
migration_ref.save()
instance_disks = self.driver.get_instance(context, instance_id)
instance_disks = self._convert_disks(instance_disks)
instance_info = ast.literal_eval(resource_ref.properties)
instance_info['disks'] = instance_disks
_cast_to_destination(context, dest_host, 'create_instance',
migration_ref, resource_ref, **instance_info)
def stop(self):
"""Stop this server.
This is not a very nice action, as currently the method by which a
server is stopped is by killing its eventlet.
:returns: None
"""
LOG.info(_LI("Stopping WSGI server."))
if self._server is not None:
# Resize pool to stop new requests from being processed
self._pool.resize(0)
self._server.kill()
def _get_volume(self, context, migration_ref,
resource_ref, dest_host):
volume_id = resource_ref.id_at_source
LOG.info(_LI('Getting volume from source hypervisor, '
'volume_id: %s'), volume_id)
migration_ref.migration_status = "Inprogress"
migration_ref.migration_event = "Fetching from source"
migration_ref.save()
volume_path = self.driver.get_volume(context, volume_id,
migration_ref.id)
volume_info = ast.literal_eval(resource_ref.properties)
volume_info['path'] = volume_path
_cast_to_destination(context, dest_host, 'create_volume',
migration_ref, resource_ref, **volume_info)
def stop(self):
"""Stop this server.
This is not a very nice action, as currently the method by which a
server is stopped is by killing its eventlet.
:returns: None
"""
LOG.info(_LI("Stopping WSGI server."))
if self._server is not None:
# Resize pool to stop new requests from being processed
self._pool.resize(0)
self._server.kill()
def wait(self):
"""Block, until the server has stopped.
Waits on the server's eventlet to finish, then returns.
:returns: None
"""
try:
if self._server is not None:
self._pool.waitall()
self._server.wait()
except greenlet.GreenletExit:
LOG.info(_LI("WSGI server has stopped."))
def wait(self):
"""Block, until the server has stopped.
Waits on the server's eventlet to finish, then returns.
:returns: None
"""
try:
if self._server is not None:
self._pool.waitall()
self._server.wait()
except greenlet.GreenletExit:
LOG.info(_LI("WSGI server has stopped."))
def init_host(self):
"""Perform any required initialization."""
ctxt = context.get_admin_context()
LOG.info(_LI("Starting destination driver %(driver_name)s."),
{'driver_name': self.driver.__class__.__name__})
try:
self.driver.do_setup(ctxt)
except Exception:
LOG.exception(_LE("Failed to initialize driver."),
resource={'type': 'driver',
'id': self.__class__.__name__})
# we don't want to continue since we failed
# to initialize the driver correctly.
return
self.publish_service_capabilities(ctxt)
def start(self):
version_string = version.version_string()
LOG.info(_LI('Starting %(topic)s node (version %(version_string)s)'), {
'topic': self.topic,
'version_string': version_string
})
self.model_disconnected = False
self.manager.init_host()
ctxt = context.get_admin_context()
try:
service_ref = objects.Service.get_by_args(ctxt, self.host,
self.binary)
self.service_id = service_ref.id
except exception.NotFound:
self._create_service_ref(ctxt)
LOG.debug("Creating RPC server for service %s", self.topic)
target = messaging.Target(topic=self.topic, server=self.host)
endpoints = [self.manager]
endpoints.extend(self.manager.additional_endpoints)
serializer = objects_base.GutsObjectSerializer()
self.rpcserver = rpc.get_server(target, endpoints, serializer)
self.rpcserver.start()
self.manager.init_host_with_rpc()
if self.report_interval:
pulse = loopingcall.FixedIntervalLoopingCall(self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = loopingcall.FixedIntervalLoopingCall(
self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def _error(self, inner, req):
safe = getattr(inner, 'safe', False)
headers = getattr(inner, 'headers', None)
status = getattr(inner, 'code', 500)
if status is None:
status = 500
msg_dict = dict(url=req.url, status=status)
LOG.info(_LI("%(url)s returned with HTTP %(status)d"), msg_dict)
outer = self.status_to_type(status)
if headers:
outer.headers = headers
if safe:
msg = (inner.msg if isinstance(inner, exception.GutsException)
else six.text_type(inner))
params = {'exception': inner.__class__.__name__,
'explanation': msg}
outer.explanation = _('%(exception)s: %(explanation)s') % params
return wsgi.Fault(outer)
def start(self):
version_string = version.version_string()
LOG.info(_LI('Starting %(topic)s node (version %(version_string)s)'),
{'topic': self.topic, 'version_string': version_string})
self.model_disconnected = False
self.manager.init_host()
ctxt = context.get_admin_context()
try:
service_ref = objects.Service.get_by_args(
ctxt, self.host, self.binary)
self.service_id = service_ref.id
except exception.NotFound:
self._create_service_ref(ctxt)
LOG.debug("Creating RPC server for service %s", self.topic)
target = messaging.Target(topic=self.topic, server=self.host)
endpoints = [self.manager]
endpoints.extend(self.manager.additional_endpoints)
serializer = objects_base.GutsObjectSerializer()
self.rpcserver = rpc.get_server(target, endpoints, serializer)
self.rpcserver.start()
self.manager.init_host_with_rpc()
if self.report_interval:
pulse = loopingcall.FixedIntervalLoopingCall(
self.report_state)
pulse.start(interval=self.report_interval,
initial_delay=self.report_interval)
self.timers.append(pulse)
if self.periodic_interval:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = loopingcall.FixedIntervalLoopingCall(
self.periodic_tasks)
periodic.start(interval=self.periodic_interval,
initial_delay=initial_delay)
self.timers.append(periodic)
def create_instance(self, context, **kwargs):
"""Create a new instance."""
LOG.info(_LI('Create instance started.'))
migration_ref = kwargs.pop('migration_ref')
resource_ref = kwargs.pop('resource_ref')
migration_ref.migration_event = 'Creating at destination'
migration_ref.save()
kwargs['mig_ref_id'] = migration_ref.id
try:
self.driver.create_instance(context, **kwargs)
except exception.NetworkCreationFailed:
migration_ref.migration_status = 'ERROR'
migration_ref.migration_event = None
migration_ref.save()
raise
migration_ref.migration_status = 'COMPLETE'
migration_ref.migration_event = None
migration_ref.save()
resource_ref.migrated = True
resource_ref.save()
def create_network(self, context, **kwargs):
"""Creates new network on destination OpenStack hypervisor."""
LOG.info(_LI('Create network started, network: %s.'), kwargs['id'])
del kwargs['id']
del kwargs['name']
migration_ref = kwargs.pop('migration_ref')
resource_ref = kwargs.pop('resource_ref')
migration_ref.migration_event = 'Creating at destination'
migration_ref.save()
try:
self.driver.create_network(context, **kwargs)
except exception.NetworkCreationFailed:
migration_ref.migration_status = 'ERROR'
migration_ref.migration_event = None
migration_ref.save()
raise
migration_ref.migration_status = 'COMPLETE'
migration_ref.migration_event = None
migration_ref.save()
resource_ref.migrated = True
resource_ref.save()
def create_volume(self, context, **kwargs):
"""Creats volume on destination OpenStack hypervisor."""
LOG.info(_LI('Create volume started, volume: %s.'), kwargs['id'])
del kwargs['id']
migration_ref = kwargs.pop('migration_ref')
resource_ref = kwargs.pop('resource_ref')
migration_ref.migration_event = 'Creating at destination'
migration_ref.save()
kwargs['mig_ref_id'] = migration_ref.id
try:
self.driver.create_volume(context, **kwargs)
except exception.NetworkCreationFailed:
migration_ref.migration_status = 'ERROR'
migration_ref.migration_event = None
migration_ref.save()
raise
migration_ref.migration_status = 'COMPLETE'
migration_ref.migration_event = None
migration_ref.save()
resource_ref.migrated = True
resource_ref.save()
def _update_host_state_map(self, context):
# Get resource usage across the available nodes:
sources = objects.ServiceList.get_all_by_topic(context,
CONF.source_topic,
disabled=False)
dests = objects.ServiceList.get_all_by_topic(context,
CONF.destination_topic,
disabled=False)
active_hosts = set()
no_capabilities_hosts = set()
for service in sources.objects + dests.objects:
host = service.host
if not utils.service_is_up(service):
LOG.warning(_LW("Service is down. (host: %s)"), host)
continue
capabilities = self.service_states.get(host, None)
if capabilities is None:
no_capabilities_hosts.add(host)
continue
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=dict(service))
self.host_state_map[host] = host_state
# update capabilities and attributes in host_state
host_state.update_from_migration_capability(capabilities,
service=dict(service))
active_hosts.add(host)
self._no_capabilities_hosts = no_capabilities_hosts
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(_LI("Removing non-active host: %(host)s from "
"scheduler cache."), {'host': host})
del self.host_state_map[host]
def get_filtered_objects(self,
filter_classes,
objs,
filter_properties,
index=0):
"""Get objects after filter
:param filter_classes: filters that will be used to filter the
objects
:param objs: objects that will be filtered
:param filter_properties: client filter properties
:param index: This value needs to be increased in the caller
function of get_filtered_objects when handling
each resource.
"""
list_objs = list(objs)
LOG.debug("Starting with %d host(s)", len(list_objs))
for filter_cls in filter_classes:
cls_name = filter_cls.__name__
filter_class = filter_cls()
if filter_class.run_filter_for_index(index):
objs = filter_class.filter_all(list_objs, filter_properties)
if objs is None:
LOG.debug("Filter %(cls_name)s says to stop filtering",
{'cls_name': cls_name})
return
list_objs = list(objs)
msg = (
_LI("Filter %(cls_name)s returned %(obj_len)d host(s)") % {
'cls_name': cls_name,
'obj_len': len(list_objs)
})
if not list_objs:
LOG.info(msg)
break
LOG.debug(msg)
return list_objs
def _process_stack(self, request, action, action_args,
content_type, body, accept):
"""Implement the processing stack."""
# Get the implementing method
try:
meth, extensions = self.get_method(request, action,
content_type, body)
except (AttributeError, TypeError):
return Fault(webob.exc.HTTPNotFound())
except KeyError as ex:
msg = _("There is no such action: %s") % ex.args[0]
return Fault(webob.exc.HTTPBadRequest(explanation=msg))
except exception.MalformedRequestBody:
msg = _("Malformed request body")
return Fault(webob.exc.HTTPBadRequest(explanation=msg))
# Now, deserialize the request body...
try:
if content_type:
contents = self.deserialize(meth, content_type, body)
else:
contents = {}
except exception.InvalidContentType:
msg = _("Unsupported Content-Type")
return Fault(webob.exc.HTTPBadRequest(explanation=msg))
except exception.MalformedRequestBody:
msg = _("Malformed request body")
return Fault(webob.exc.HTTPBadRequest(explanation=msg))
# Update the action args
action_args.update(contents)
project_id = action_args.pop("project_id", None)
context = request.environ.get('guts.context')
if (context and project_id and (project_id != context.project_id)):
msg = _("Malformed request url")
return Fault(webob.exc.HTTPBadRequest(explanation=msg))
# Run pre-processing extensions
response, post = self.pre_process_extensions(extensions,
request, action_args)
if not response:
try:
with ResourceExceptionHandler():
action_result = self.dispatch(meth, request, action_args)
except Fault as ex:
response = ex
if not response:
# No exceptions; convert action_result into a
# ResponseObject
resp_obj = None
if type(action_result) is dict or action_result is None:
resp_obj = ResponseObject(action_result)
elif isinstance(action_result, ResponseObject):
resp_obj = action_result
else:
response = action_result
# Run post-processing extensions
if resp_obj:
_set_request_id_header(request, resp_obj)
# Do a preserialize to set up the response object
serializers = getattr(meth, 'wsgi_serializers', {})
resp_obj._bind_method_serializers(serializers)
if hasattr(meth, 'wsgi_code'):
resp_obj._default_code = meth.wsgi_code
resp_obj.preserialize(accept, self.default_serializers)
# Process post-processing extensions
response = self.post_process_extensions(post, resp_obj,
request, action_args)
if resp_obj and not response:
response = resp_obj.serialize(request, accept,
self.default_serializers)
try:
msg_dict = dict(url=request.url, status=response.status_int)
msg = _LI("%(url)s returned with HTTP %(status)d")
except AttributeError as e:
msg_dict = dict(url=request.url, e=e)
msg = _LI("%(url)s returned a fault: %(e)s")
LOG.info(msg, msg_dict)
return response
def __init__(self):
LOG.info(_LI('Initializing extension manager.'))
self.cls_list = CONF.osapi_migration_extension
self.extensions = {}
self._load_extensions()
def __init__(
self, name, app, host=None, port=None, pool_size=None, protocol=eventlet.wsgi.HttpProtocol, backlog=128
):
"""Initialize, but do not start, a WSGI server.
:param name: Pretty name for logging.
:param app: The WSGI application to serve.
:param host: IP address to serve the application.
:param port: Port number to server the application.
:param pool_size: Maximum number of eventlets to spawn concurrently.
:returns: None
"""
# Allow operators to customize http requests max header line size.
eventlet.wsgi.MAX_HEADER_LINE = CONF.max_header_line
self.client_socket_timeout = CONF.client_socket_timeout or None
self.name = name
self.app = app
self._host = host or "0.0.0.0"
self._port = port or 0
self._server = None
self._socket = None
self._protocol = protocol
self.pool_size = pool_size or self.default_pool_size
self._pool = eventlet.GreenPool(self.pool_size)
self._logger = logging.getLogger("eventlet.wsgi.server")
if backlog < 1:
raise exception.InvalidInput(reason="The backlog must be more than 1")
bind_addr = (host, port)
try:
info = socket.getaddrinfo(bind_addr[0], bind_addr[1], socket.AF_UNSPEC, socket.SOCK_STREAM)[0]
family = info[0]
bind_addr = info[-1]
except Exception:
family = socket.AF_INET
cert_file = CONF.ssl_cert_file
key_file = CONF.ssl_key_file
ca_file = CONF.ssl_ca_file
self._use_ssl = cert_file or key_file
if cert_file and not os.path.exists(cert_file):
raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
if ca_file and not os.path.exists(ca_file):
raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
if key_file and not os.path.exists(key_file):
raise RuntimeError(_("Unable to find key_file : %s") % key_file)
if self._use_ssl and (not cert_file or not key_file):
raise RuntimeError(
_(
"When running server in SSL mode, you "
"must specify both a cert_file and "
"key_file option value in your "
"configuration file."
)
)
retry_until = time.time() + 30
while not self._socket and time.time() < retry_until:
try:
self._socket = eventlet.listen(bind_addr, backlog=backlog, family=family)
except socket.error as err:
if err.args[0] != errno.EADDRINUSE:
raise
eventlet.sleep(0.1)
if not self._socket:
raise RuntimeError(
_("Could not bind to %(host)s:%(port)s " "after trying for 30 seconds") % {"host": host, "port": port}
)
(self._host, self._port) = self._socket.getsockname()[0:2]
LOG.info(
_LI("%(name)s listening on %(_host)s:%(_port)s"),
{"name": self.name, "_host": self._host, "_port": self._port},
)
def _create_migration(self, ctxt, migration_ref):
"""
Migration setps:
Step - 1: Get resource object, R
Step - 2: Get the source cloud, S
Step - 3: Get the destination cloud, D
Step - 4: Check if D is destination
Step - 5: Check if S support R migration
Step - 6: Check if D support R migration
Step - 7: Load source driver, source_driver
Step - 8: Load destination driver, dest_driver
Step - 9: Call R's migration method
"""
utils.migration_status_update(migration_ref, 'INITIATING', 'validating')
try:
# NOTE(Step - 1): Get resource object, R
resource = objects.Resource.get_by_id(ctxt,
migration_ref.resource_id)
# NOTE(Step - 2): Get the source cloud, S
source = objects.Cloud.get_by_id(ctxt, resource.cloud_id)
# NOTE(Step - 3): Get the destination cloud, D
dest = objects.Cloud.get_by_id(ctxt,
migration_ref.destination_cloud_id)
except exception.GutsException as error:
LOG.exception(error.message)
utils.migration_status_update(migration_ref, 'FAILED', '-', error.message)
raise exception.MigrationFailed(messaage=error.message)
except Exception as error:
LOG.exception(error.message)
utils.migration_status_update(migration_ref, 'FAILED', '-', error.message)
raise exception.MigrationFailed(message=error.message)
LOG.info(_LI('Starting %(r_name)s migration from %(s_name)s cloud '
'to %(d_name)s cloud.') % {'r_name': resource.name,
's_name': source.name,
'd_name': dest.name})
# NOTE(Step - 4): Verify D supports R migration
if dest.type != "destination":
msg = (_('Cloud %(cloud_name)s is not a destination Cloud.'),
{'cloud_name': dest.name})
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
# NOTE(Step - 5): Check if S support R migration
if resource.type not in ast.literal_eval(source.capabilities):
msg = (_('%(resource_type)s resource migration not supported by '
'the source cloud %(cloud_name)s.'),
{'resource_type': resource.type,
'cloud_name': source.name})
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
# NOTE(Step - 6): Check if D support R migration
if resource.type not in ast.literal_eval(dest.capabilities):
msg = (_('%(resource_type)s resource migration not supported by '
'the destination cloud %(cloud_name)s.'),
{'resource_type': resource.type,
'cloud_name': dest.name})
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
# NOTE(Step - 7): Load source driver, source_driver
try:
source_driver = importutils.import_object(source.driver,
cloud=source)
except Exception:
msg = (_('Failed to load source driver: %s') % source.driver)
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
# NOTE(Step - 8): Load destination driver, dest_driver
try:
dest_driver = importutils.import_object(dest.driver, cloud=dest)
except Exception:
msg = (_('Failed to load destination driver: %s') % dest.driver)
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
# NOTE(Step - 9): Call migration method
try:
self._migrate_resource(migration_ref, resource, source_driver, dest_driver)
except AttributeError:
msg = (_('Method %(name)s not implemented in the manager:')
% {'name': method_name})
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
except exception.OpenStackException as error:
msg = (_('Failed fetch resource %(r_name)s properties from '
'%(s_name)s cloud: %(err)s') % {'r_name': resource.name,
's_name': source.name,
'err': error})
LOG.exception(msg)
utils.migration_status_update(migration_ref, 'FAILED', '-', msg)
raise exception.MigrationFailed(message=msg)
def update_cloud(self, context, id, name=None, driver=None, type=None,
capabilities=None, enabled=None, params=None):
"""Updates a cloud"""
check_policy(context, 'update_cloud')
cloud_obj = objects.Cloud.get_by_id(context, id)
old_capabs = ast.literal_eval(cloud_obj.capabilities)
updates = {}
if name:
updates['name'] = name
# Driver path
if driver:
try:
driver_cls = importutils.import_class(driver)
except ImportError:
msg = _('Unable to import driver class %s') % driver
raise exception.InvalidInput(reason=msg)
# Driver type validation
if issubclass(driver_cls, m_driver.SourceDriver):
if type and type != 'source':
msg = _("Invalid driver type %s") % type
raise exception.InvalidInput(reason=msg)
else:
type = 'source'
elif issubclass(driver_cls, m_driver.DestinationDriver):
if type and type != 'destination':
msg = _("Invalid driver type %s") % type
raise exception.InvalidInput(reason=msg)
else:
type = 'destination'
else:
msg = _("Invalid driver class path %s") % driver
raise exception.InvalidInput(reason=msg)
updates['driver'] = driver
if not capabilities:
capabilities = cloud_obj.capabilities
if not params:
params = cloud_obj.params
else:
driver_cls = importutils.import_class(cloud_obj.driver)
if 'driver' in updates:
# Existing capabilities validation against new driver
for capab in capabilities:
if capab not in driver_cls.DRIVER_CAPABILITIES:
msg = (_("Specified capability %s not supported by the "
"driver") % (capab, driver))
raise exception.InvalidInput(reason=msg)
updates['capabilities'] = str(capabilities)
# Existing params validation against new driver
try:
con_params = driver_cls.validate_params(params, capabilities)
except exception.MigrationDriverException as error:
raise exception.InvalidInput(reason=error.msg)
updates['params'] = con_params
else:
if capabilities:
for capab in capabilities:
if capab not in driver_cls.DRIVER_CAPABILITIES:
msg = (_("Specified capability %(capab)s not supported"
" by the driver %(dri)s") % {'capab': capab,
'dri': driver})
raise exception.InvalidInput(reason=msg)
updates['capabilities'] = str(capabilities)
if params:
# Connection params validation
old_params = cloud_obj.params.copy()
old_params.update(params)
try:
con_params = driver_cls.validate_params(
old_params, capabilities or cloud_obj.capabilities)
except exception.MigrationDriverException as error:
raise exception.InvalidInput(reason=error.msg)
updates['params'] = con_params
if enabled is not None:
updates['enabled'] = enabled
cloud_obj.update(updates)
cloud_obj.save()
if cloud_obj.enabled:
if cloud_obj.type == "source":
self.scheduler_rpcapi.resource_fetch(context,
clouds=[cloud_obj])
self._delete_existing_capab_resources(context, cloud_obj,
old_capabs)
elif cloud_obj.type == "destination":
self.scheduler_rpcapi.cloud_prop_update(context,
clouds=[cloud_obj])
else:
# Delete all existing resources from cloud, when its disabled.
self._delete_resources(context, cloud_obj.id)
LOG.info(_LI("Cloud updated successfully."))
return cloud_obj
def __init__(self):
LOG.info(_LI('Initializing extension manager.'))
self.cls_list = CONF.osapi_migration_extension
self.extensions = {}
self._load_extensions()
def __init__(self,
name,
app,
host=None,
port=None,
pool_size=None,
protocol=eventlet.wsgi.HttpProtocol,
backlog=128):
"""Initialize, but do not start, a WSGI server.
:param name: Pretty name for logging.
:param app: The WSGI application to serve.
:param host: IP address to serve the application.
:param port: Port number to server the application.
:param pool_size: Maximum number of eventlets to spawn concurrently.
:returns: None
"""
# Allow operators to customize http requests max header line size.
eventlet.wsgi.MAX_HEADER_LINE = CONF.max_header_line
self.client_socket_timeout = CONF.client_socket_timeout or None
self.name = name
self.app = app
self._host = host or "0.0.0.0"
self._port = port or 0
self._server = None
self._socket = None
self._protocol = protocol
self.pool_size = pool_size or self.default_pool_size
self._pool = eventlet.GreenPool(self.pool_size)
self._logger = logging.getLogger("eventlet.wsgi.server")
if backlog < 1:
raise exception.InvalidInput(
reason='The backlog must be more than 1')
bind_addr = (host, port)
try:
info = socket.getaddrinfo(bind_addr[0], bind_addr[1],
socket.AF_UNSPEC, socket.SOCK_STREAM)[0]
family = info[0]
bind_addr = info[-1]
except Exception:
family = socket.AF_INET
cert_file = CONF.ssl_cert_file
key_file = CONF.ssl_key_file
ca_file = CONF.ssl_ca_file
self._use_ssl = cert_file or key_file
if cert_file and not os.path.exists(cert_file):
raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
if ca_file and not os.path.exists(ca_file):
raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
if key_file and not os.path.exists(key_file):
raise RuntimeError(_("Unable to find key_file : %s") % key_file)
if self._use_ssl and (not cert_file or not key_file):
raise RuntimeError(
_("When running server in SSL mode, you "
"must specify both a cert_file and "
"key_file option value in your "
"configuration file."))
retry_until = time.time() + 30
while not self._socket and time.time() < retry_until:
try:
self._socket = eventlet.listen(bind_addr,
backlog=backlog,
family=family)
except socket.error as err:
if err.args[0] != errno.EADDRINUSE:
raise
eventlet.sleep(0.1)
if not self._socket:
raise RuntimeError(
_("Could not bind to %(host)s:%(port)s "
"after trying for 30 seconds") % {
'host': host,
'port': port
})
(self._host, self._port) = self._socket.getsockname()[0:2]
LOG.info(_LI("%(name)s listening on %(_host)s:%(_port)s"), {
'name': self.name,
'_host': self._host,
'_port': self._port
})