118 lines
4.4 KiB
Python
Executable File
118 lines
4.4 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 StartTask
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DLOG = debug.debug_get_logger('nfv_vim.state_machine.instance')
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class StartState(state_machine.State):
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"""
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Instance - Start State
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"""
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def __init__(self, name):
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super(StartState, self).__init__(name)
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def enter(self, instance):
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"""
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Entering start 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.wait_time = 0
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instance.task = StartTask(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 start 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, StartTask):
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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 start 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 start 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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instance_director.instance_start_complete(instance, instance.host_name,
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failed=False, timed_out=False,
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cancelled=True)
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return INSTANCE_STATE.INITIAL
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elif INSTANCE_EVENT.TASK_COMPLETED == event:
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DLOG.debug("Start inprogress for %s." % instance.name)
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instance.action_fsm.wait_time = \
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timers.get_monotonic_timestamp_in_ms()
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elif INSTANCE_EVENT.TASK_FAILED == event:
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DLOG.info("Start failed for %s." % instance.name)
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instance.fail_action(instance.action_fsm_action_type, reason)
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instance_director.instance_start_complete(instance, instance.host_name,
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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("Start timed out for %s." % instance.name)
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instance.fail_action(instance.action_fsm_action_type, 'timeout')
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instance_director.instance_start_complete(instance, instance.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_EVENT.NFVI_ENABLED == event:
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instance_director.instance_start_complete(instance,
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instance.host_name)
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return INSTANCE_STATE.INITIAL
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elif INSTANCE_EVENT.AUDIT == event:
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if not instance.task.inprogress():
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if instance.is_enabled():
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instance_director.instance_start_complete(
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instance, instance.host_name)
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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 = \
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(now_ms - instance.action_fsm.wait_time) // 1000
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# Only wait 60 seconds for the instance to start.
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if 60 <= secs_expired:
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instance.fail_action(instance.action_fsm_action_type,
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'timeout')
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instance_director.instance_start_complete(
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instance,
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instance.host_name,
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failed=False,
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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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