88 lines
2.5 KiB
Python
88 lines
2.5 KiB
Python
from etcd3_wrapper import EtcdEntry
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from .helpers import SpecificEtcdEntryBase
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class VMStatus(object):
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# Must be only assigned to brand new VM
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requested_new = "REQUESTED_NEW"
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# Host assigned to VM but not created yet.
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scheduled_deploy = "SCHEDULED_DEPLOY"
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# Only Assigned to already created vm
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requested_start = "REQUESTED_START"
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# These all are for running vms
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requested_shutdown = "REQUESTED_SHUTDOWN"
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requested_suspend = "REQUESTED_SUSPEND"
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requested_resume = "REQUESTED_RESUME"
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requested_migrate = "REQUESTED_MIGRATE"
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# either its image is not found or user requested
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# to delete it
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deleted = "DELETED"
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stopped = "STOPPED" # After requested_shutdown
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killed = "KILLED" # either host died or vm died itself
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running = "RUNNING"
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suspended = "SUSPENDED"
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RUNNING_VM_STATUSES = [VMStatus.requested_shutdown, VMStatus.requested_suspend,
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VMStatus.requested_resume, VMStatus.requested_migrate,
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VMStatus.running, VMStatus.suspended]
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class VMEntry(SpecificEtcdEntryBase):
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def __init__(self, e: EtcdEntry):
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self.owner = ""
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self.specs = dict()
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self.hostname = ""
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self.status = ""
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self.image_uuid = ""
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super().__init__(e)
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@property
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def uuid(self):
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return self.key.split("/")[-1]
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def declare_killed(self):
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self.hostname = ""
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if self.status in RUNNING_VM_STATUSES:
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self.status = VMStatus.killed
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class VmPool(object):
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def __init__(self, etcd_client, vm_prefix):
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self.client = etcd_client
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self.prefix = vm_prefix
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@property
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def vms(self):
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_vms = self.client.get_prefix(self.prefix, value_in_json=True)
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return [VMEntry(vm) for vm in _vms]
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def by_host(self, host, _vms=None):
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if _vms is None:
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_vms = self.vms
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return list(filter(lambda x: x.hostname == host, _vms))
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def by_status(self, status, _vms=None):
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if _vms is None:
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_vms = self.vms
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return list(filter(lambda x: x.status == status, _vms))
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def except_status(self, status, _vms=None):
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if _vms is None:
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_vms = self.vms
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return list(filter(lambda x: x.status != status, _vms))
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def get(self, key):
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v = self.client.get(key, value_in_json=True)
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return VMEntry(v)
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def put(self, obj: VMEntry):
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self.client.put(obj.key, obj.value, value_in_json=True)
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