86 lines
3.0 KiB
Python
Executable File
86 lines
3.0 KiB
Python
Executable File
import argparse
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import multiprocessing as mp
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import time
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import sys
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from ucloud.common.request import RequestEntry, RequestType
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from ucloud.common.host import HostPool
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from ucloud.shared import shared
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from ucloud.settings import settings
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from . import virtualmachine, logger
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vmm = virtualmachine.VMM()
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def update_heartbeat(hostname):
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"""Update Last HeartBeat Time for :param hostname: in etcd"""
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client = shared.etcd_client
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host_pool = HostPool(client)
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this_host = next(filter(lambda h: h.hostname == hostname, host_pool.hosts), None)
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while True:
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this_host.update_heartbeat()
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host_pool.put(this_host)
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time.sleep(10)
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def main(hostname):
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host_pool = HostPool(shared.etcd_client)
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host = next(filter(lambda h: h.hostname == hostname, host_pool.hosts), None)
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assert host is not None, "No such host with name = {}".format(hostname)
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try:
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heartbeat_updating_process = mp.Process(target=update_heartbeat, args=(hostname,))
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heartbeat_updating_process.start()
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except Exception as e:
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logger.exception(e)
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sys.exit("No Need To Go Further. ucloud-host heartbeat updating mechanism is not working")
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for events_iterator in [
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shared.etcd_client.get_prefix(settings['etcd']['request_prefix'], value_in_json=True),
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shared.etcd_client.watch_prefix(settings['etcd']['request_prefix'], timeout=10, value_in_json=True),
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]:
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for request_event in events_iterator:
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request_event = RequestEntry(request_event)
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if request_event.type == "TIMEOUT":
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vmm.maintenance(host)
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continue
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# If the event is directed toward me OR I am destination of a InitVMMigration
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if request_event.hostname == host.key or request_event.destination == host.key:
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logger.debug("VM Request: %s", request_event)
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shared.request_pool.client.client.delete(request_event.key)
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vm_entry = shared.vm_pool.get(request_event.uuid)
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if vm_entry:
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if request_event.type == RequestType.StartVM:
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vmm.start(vm_entry)
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elif request_event.type == RequestType.StopVM:
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vmm.stop(vm_entry)
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elif request_event.type == RequestType.DeleteVM:
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vmm.delete(vm_entry)
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elif request_event.type == RequestType.InitVMMigration:
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vmm.start(vm_entry, host.key)
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elif request_event.type == RequestType.TransferVM:
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vmm.transfer(request_event)
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else:
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logger.info("VM Entry missing")
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logger.info("Running VMs %s", vmm.running_vms)
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if __name__ == "__main__":
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argparser = argparse.ArgumentParser()
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argparser.add_argument("hostname", help="Name of this host. e.g /v1/host/1")
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args = argparser.parse_args()
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mp.set_start_method('spawn')
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main(args.hostname)
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