def __init__(self,
host,
binary,
topic,
manager,
report_interval=None,
periodic_enable=None,
periodic_fuzzy_delay=None,
periodic_interval_max=None,
db_allowed=True,
*args,
**kwargs):
super(Service, self).__init__()
self.host = host
self.binary = binary
self.topic = topic
self.manager_class_name = manager
manager_class = importutils.import_class(self.manager_class_name)
self.manager = manager_class(host=self.host, *args, **kwargs)
self.rpcserver = None
self.report_interval = report_interval
self.periodic_enable = periodic_enable
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.periodic_interval_max = periodic_interval_max
self.saved_args, self.saved_kwargs = args, kwargs
self.backdoor_port = None
"""
conductor.API需要进行进一步实现；
"""
self.conductor_api = conductor.API(use_local=db_allowed)
self.conductor_api.wait_until_ready(context.get_admin_context())
"""
def __init__(self, host, binary, topic, manager, report_interval=None,
periodic_enable=None, periodic_fuzzy_delay=None,
periodic_interval_max=None, db_allowed=True,
*args, **kwargs):
super(Service, self).__init__()
self.host = host
self.binary = binary
self.topic = topic
self.manager_class_name = manager
manager_class = importutils.import_class(self.manager_class_name)
self.manager = manager_class(host=self.host, *args, **kwargs)
self.rpcserver = None
self.report_interval = report_interval
self.periodic_enable = periodic_enable
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.periodic_interval_max = periodic_interval_max
self.saved_args, self.saved_kwargs = args, kwargs
self.backdoor_port = None
"""
conductor.API需要进行进一步实现；
"""
self.conductor_api = conductor.API(use_local=db_allowed)
self.conductor_api.wait_until_ready(context.get_admin_context())
"""
def kill(self):
"""
Destroy the service object in the datastore.
"""
self.stop()
try:
self.conductor_api.service_destroy(context.get_admin_context(),
self.service_id)
except exception.NotFound:
LOG.warn(_('Service killed that has no database entry'))
def kill(self):
"""
Destroy the service object in the datastore.
"""
self.stop()
try:
self.conductor_api.service_destroy(context.get_admin_context(),
self.service_id)
except exception.NotFound:
LOG.warn(_('Service killed that has no database entry'))
def periodic_tasks(self, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
ctxt = context.get_admin_context()
return self.manager.periodic_tasks(ctxt, raise_on_error=raise_on_error)
def start(self):
verstr = version.version_string_with_package()
LOG.audit(_('Starting %(topic)s node (version %(version)s)'), {
'topic': self.topic,
'version': verstr
})
self.basic_config_check()
"""
服务中的初始化操作；
@@@@这里很重要；
需要实现hosts/vms/scheduler中的init_host方法；
"""
self.manager.init_host()
"""
======================================================================================
self.manager = <nova.cert.manager.CertManager object at 0x3ed4550>
self.manager.init_host = <bound method CertManager.init_host of <nova.cert.manager.CertManager object at 0x3ed4550>>
======================================================================================
======================================================================================
self.manager = <nova.conductor.manager.ConductorManager object at 0x248f490>
self.manager.init_host = <bound method ConductorManager.init_host of <nova.conductor.manager.ConductorManager object at 0x248f490>>
======================================================================================
======================================================================================
self.manager = <nova.scheduler.manager.SchedulerManager object at 0x369d490>
self.manager.init_host = <bound method SchedulerManager.init_host of <nova.scheduler.manager.SchedulerManager object at 0x369d490>>
======================================================================================
======================================================================================
self.manager = <nova.compute.manager.ComputeManager object at 0x2beba90>
self.manager.init_host = <bound method ComputeManager.init_host of <nova.compute.manager.ComputeManager object at 0x2beba90>>
======================================================================================
======================================================================================
self.manager = <nova.console.manager.ConsoleProxyManager object at 0x2898490>
self.manager.init_host = <bound method ConsoleProxyManager.init_host of <nova.console.manager.ConsoleProxyManager object at 0x2898490>>
======================================================================================
"""
self.model_disconnected = False
ctxt = context.get_admin_context()
try:
self.service_ref = self.conductor_api.service_get_by_args(
ctxt, self.host, self.binary)
self.service_id = self.service_ref['id']
"""
======================================================================================
ctxt = <nova.context.RequestContext object at 0x1f996d0>
self.host = node01.shinian.com
self.binary = nova-scheduler
self.service_ref = {'binary': u'nova-scheduler', 'deleted': 0L, 'created_at': '2015-01-08T02:46:44.000000', 'updated_at': '2015-01-30T09:29:40.000000', 'report_count': 192315L, 'topic': u'scheduler', 'host': u'node01.shinian.com', 'disabled': False, 'deleted_at': None, 'disabled_reason': None, 'id': 2L}
self.service_id = 2
======================================================================================
"""
except exception.NotFound:
try:
self.service_ref = self._create_service_ref(ctxt)
except (exception.ServiceTopicExists,
exception.ServiceBinaryExists):
# NOTE(danms): If we race to create a record with a sibling
# worker, don't fail here.
self.service_ref = self.conductor_api.service_get_by_args(
ctxt, self.host, self.binary)
"""
在计算服务初始化之后，且在计算服务完全应用之前，务必要确认更新
可用的资源信息；
@@@@这里很重要；
需要在hosts和vms中实现这个方法，同上面的init_host方法，还未解决；
"""
self.manager.pre_start_hook()
"""
RPC机制的应用；
@@@@这里很重要；
"""
if self.backdoor_port is not None:
self.manager.backdoor_port = self.backdoor_port
LOG.debug(_("Creating RPC server for service %s") % self.topic)
target = messaging.Target(topic=self.topic, server=self.host)
"""
self.topic = scheduler
self.host = node01.shinian.com
target = <Target topic=scheduler, server=node01.shinian.com>
"""
endpoints = [
self.manager,
baserpc.BaseRPCAPI(self.manager.service_name, self.backdoor_port)
]
"""
======================================================================================
self.manager = <nova.scheduler.manager.SchedulerManager object at 0x2b71210>
self.manager.service_name = scheduler
self.backdoor_port = None
endpoints = [<nova.scheduler.manager.SchedulerManager object at 0x2b71210>, <nova.baserpc.BaseRPCAPI object at 0x4e3ee10>]
======================================================================================
"""
endpoints.extend(self.manager.additional_endpoints)
"""
======================================================================================
endpoints = [<nova.scheduler.manager.SchedulerManager object at 0x2e341d0>,
<nova.baserpc.BaseRPCAPI object at 0x50aafd0>,
<nova.scheduler.manager._SchedulerManagerV3Proxy object at 0x2e9df90>]
======================================================================================
"""
"""
objects_base.XdrsObjectSerializer需要进行进一步实现，还未完成；
"""
serializer = objects_base.XdrsObjectSerializer()
self.rpcserver = rpc.get_server(target, endpoints, serializer)
self.rpcserver.start()
if self.periodic_enable:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
"""
启动线程，周期性任务的实现；
@@@@这里很重要；
"""
self.tg.add_dynamic_timer(
self.periodic_tasks,
initial_delay=initial_delay,
periodic_interval_max=self.periodic_interval_max)
def periodic_tasks(self, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
ctxt = context.get_admin_context()
return self.manager.periodic_tasks(ctxt, raise_on_error=raise_on_error)
def start(self):
verstr = version.version_string_with_package()
LOG.audit(_('Starting %(topic)s node (version %(version)s)'),
{'topic': self.topic, 'version': verstr})
self.basic_config_check()
"""
服务中的初始化操作；
@@@@这里很重要；
需要实现hosts/vms/scheduler中的init_host方法；
"""
self.manager.init_host()
"""
======================================================================================
self.manager = <nova.cert.manager.CertManager object at 0x3ed4550>
self.manager.init_host = <bound method CertManager.init_host of <nova.cert.manager.CertManager object at 0x3ed4550>>
======================================================================================
======================================================================================
self.manager = <nova.conductor.manager.ConductorManager object at 0x248f490>
self.manager.init_host = <bound method ConductorManager.init_host of <nova.conductor.manager.ConductorManager object at 0x248f490>>
======================================================================================
======================================================================================
self.manager = <nova.scheduler.manager.SchedulerManager object at 0x369d490>
self.manager.init_host = <bound method SchedulerManager.init_host of <nova.scheduler.manager.SchedulerManager object at 0x369d490>>
======================================================================================
======================================================================================
self.manager = <nova.compute.manager.ComputeManager object at 0x2beba90>
self.manager.init_host = <bound method ComputeManager.init_host of <nova.compute.manager.ComputeManager object at 0x2beba90>>
======================================================================================
======================================================================================
self.manager = <nova.console.manager.ConsoleProxyManager object at 0x2898490>
self.manager.init_host = <bound method ConsoleProxyManager.init_host of <nova.console.manager.ConsoleProxyManager object at 0x2898490>>
======================================================================================
"""
self.model_disconnected = False
ctxt = context.get_admin_context()
try:
self.service_ref = self.conductor_api.service_get_by_args(ctxt,
self.host, self.binary)
self.service_id = self.service_ref['id']
"""
======================================================================================
ctxt = <nova.context.RequestContext object at 0x1f996d0>
self.host = node01.shinian.com
self.binary = nova-scheduler
self.service_ref = {'binary': u'nova-scheduler', 'deleted': 0L, 'created_at': '2015-01-08T02:46:44.000000', 'updated_at': '2015-01-30T09:29:40.000000', 'report_count': 192315L, 'topic': u'scheduler', 'host': u'node01.shinian.com', 'disabled': False, 'deleted_at': None, 'disabled_reason': None, 'id': 2L}
self.service_id = 2
======================================================================================
"""
except exception.NotFound:
try:
self.service_ref = self._create_service_ref(ctxt)
except (exception.ServiceTopicExists,
exception.ServiceBinaryExists):
# NOTE(danms): If we race to create a record with a sibling
# worker, don't fail here.
self.service_ref = self.conductor_api.service_get_by_args(ctxt,
self.host, self.binary)
"""
在计算服务初始化之后，且在计算服务完全应用之前，务必要确认更新
可用的资源信息；
@@@@这里很重要；
需要在hosts和vms中实现这个方法，同上面的init_host方法，还未解决；
"""
self.manager.pre_start_hook()
"""
RPC机制的应用；
@@@@这里很重要；
"""
if self.backdoor_port is not None:
self.manager.backdoor_port = self.backdoor_port
LOG.debug(_("Creating RPC server for service %s") % self.topic)
target = messaging.Target(topic=self.topic, server=self.host)
"""
self.topic = scheduler
self.host = node01.shinian.com
target = <Target topic=scheduler, server=node01.shinian.com>
"""
endpoints = [
self.manager,
baserpc.BaseRPCAPI(self.manager.service_name, self.backdoor_port)
]
"""
======================================================================================
self.manager = <nova.scheduler.manager.SchedulerManager object at 0x2b71210>
self.manager.service_name = scheduler
self.backdoor_port = None
endpoints = [<nova.scheduler.manager.SchedulerManager object at 0x2b71210>, <nova.baserpc.BaseRPCAPI object at 0x4e3ee10>]
======================================================================================
"""
endpoints.extend(self.manager.additional_endpoints)
"""
======================================================================================
endpoints = [<nova.scheduler.manager.SchedulerManager object at 0x2e341d0>,
<nova.baserpc.BaseRPCAPI object at 0x50aafd0>,
<nova.scheduler.manager._SchedulerManagerV3Proxy object at 0x2e9df90>]
======================================================================================
"""
"""
objects_base.XdrsObjectSerializer需要进行进一步实现，还未完成；
"""
serializer = objects_base.XdrsObjectSerializer()
self.rpcserver = rpc.get_server(target, endpoints, serializer)
self.rpcserver.start()
if self.periodic_enable:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
"""
启动线程，周期性任务的实现；
@@@@这里很重要；
"""
self.tg.add_dynamic_timer(self.periodic_tasks,
initial_delay=initial_delay,
periodic_interval_max=
self.periodic_interval_max)
