132 lines
5.1 KiB
Python
Executable File
132 lines
5.1 KiB
Python
Executable File
#
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# Copyright (c) 2015-2016 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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from nfv_common import debug
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from nfv_common import state_machine
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from nfv_common import timers
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from nfv_vim.instance_fsm._instance_defs import INSTANCE_EVENT
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from nfv_vim.instance_fsm._instance_defs import INSTANCE_STATE
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from nfv_vim.instance_fsm._instance_tasks import ColdMigrateTask
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DLOG = debug.debug_get_logger('nfv_vim.state_machine.instance')
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class ColdMigrateState(state_machine.State):
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"""
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Instance - Cold Migrate State
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"""
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def __init__(self, name):
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super(ColdMigrateState, self).__init__(name)
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def enter(self, instance):
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"""
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Entering cold migrate state
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"""
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DLOG.info("Entering state (%s) for %s." % (self.name, instance.name))
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instance.action_fsm.start_time = timers.get_monotonic_timestamp_in_ms()
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instance.action_fsm.wait_time = 0
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instance.action_fsm.from_host_name = instance.host_name
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instance.task = ColdMigrateTask(instance)
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instance.task.start()
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def exit(self, instance):
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"""
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Exiting cold migrate state
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"""
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DLOG.info("Exiting state (%s) for %s." % (self.name, instance.name))
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if isinstance(instance.task, ColdMigrateTask):
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instance.task.abort()
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def transition(self, instance, event, event_data, to_state):
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"""
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Transition from the cold migrate state
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"""
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pass
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def handle_event(self, instance, event, event_data=None):
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"""
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Handle event while in the cold migrate state
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"""
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from nfv_vim import directors
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instance_director = directors.get_instance_director()
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if event_data is not None:
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reason = event_data.get('reason', '')
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else:
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reason = ''
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if instance.task.inprogress():
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if instance.task.handle_event(event, event_data):
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return self.name
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if INSTANCE_EVENT.TASK_STOP == event:
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return INSTANCE_STATE.INITIAL
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elif INSTANCE_EVENT.NFVI_RESIZED == event:
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from_host_name = instance.action_fsm.from_host_name
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instance_director.instance_migrate_complete(
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instance, from_host_name)
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return INSTANCE_STATE.COLD_MIGRATE_CONFIRM
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elif INSTANCE_EVENT.TASK_COMPLETED == event:
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if instance.action_fsm is not None:
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action_data = instance.action_fsm_data
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if action_data is not None:
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if action_data.initiated_from_cli():
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DLOG.debug("Cold-Migrate complete for %s, initiated "
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"from cli." % instance.name)
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return INSTANCE_STATE.INITIAL
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DLOG.debug("Cold-Migrate inprogress for %s." % instance.name)
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elif INSTANCE_EVENT.TASK_FAILED == event:
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DLOG.info("Cold-Migrate failed for %s." % instance.name)
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instance.fail_action(instance.action_fsm_action_type, reason)
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from_host_name = instance.action_fsm.from_host_name
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instance_director.instance_migrate_complete(
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instance, from_host_name, failed=True)
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return INSTANCE_STATE.INITIAL
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elif INSTANCE_EVENT.TASK_TIMEOUT == event:
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DLOG.info("Cold-Migrate timed out for %s." % instance.name)
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elif INSTANCE_EVENT.AUDIT == event:
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if not (instance.task.inprogress() or instance.is_resizing()):
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if 0 == instance.action_fsm.wait_time:
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instance.action_fsm.wait_time \
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= timers.get_monotonic_timestamp_in_ms()
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now_ms = timers.get_monotonic_timestamp_in_ms()
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secs_expired = (now_ms - instance.action_fsm.wait_time) // 1000
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if 60 <= secs_expired:
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instance.fail_action(instance.action_fsm_action_type, 'timeout')
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instance_director.instance_evacuate_complete(
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instance, instance.action_fsm.from_host_name,
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failed=False, timed_out=True)
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return INSTANCE_STATE.INITIAL
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else:
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now_ms = timers.get_monotonic_timestamp_in_ms()
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secs_expired = (now_ms - instance.action_fsm.start_time) // 1000
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if instance.max_cold_migrate_wait_in_secs <= secs_expired:
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instance.fail_action(instance.action_fsm_action_type, 'timeout')
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instance_director.instance_migrate_complete(
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instance, instance.action_fsm.from_host_name,
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failed=False, timed_out=True)
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return INSTANCE_STATE.INITIAL
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elif instance.task.timed_out():
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instance.fail_action(instance.action_fsm_action_type, 'timeout')
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instance_director.instance_migrate_complete(
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instance, instance.action_fsm.from_host_name,
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failed=False, timed_out=True)
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return INSTANCE_STATE.INITIAL
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else:
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DLOG.verbose("Ignoring %s event for %s." % (event, instance.name))
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return self.name
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