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ucloud-scheduler
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Small Changes, Unused import removed, Use ucloud_common.states instead of hard coded strings

This commit is contained in:
ahmadbilalkhalid 2019-07-30 20:06:42 +05:00
parent 0ecb2d9cb8
commit 0c1e9328e8
1 changed files with 10 additions and 12 deletions
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22
main.py
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@ -4,7 +4,6 @@
# 2. v3) Introduce a status endpoint of the scheduler -
# maybe expose a prometheus compatible output
import json
import argparse
import logging
@ -13,9 +12,8 @@ from collections import Counter
from functools import reduce
from etcd3_wrapper import Etcd3Wrapper
from ucloud_common.enums import HostStatus
from ucloud_common.vm import VmPool, VMEntry
from ucloud_common.host import HostPool
from ucloud_common.vm import VmPool, VMEntry, VMStatus
from ucloud_common.host import HostPool, HostStatus
logging.basicConfig(
level=logging.DEBUG,
@ -45,14 +43,14 @@ def remaining_resources(host_specs, vms_specs):
def get_suitable_host(vm_specs):
hosts = HOST_POOL.by_status("ALIVE")
hosts = HOST_POOL.by_status(HostStatus.alive)
for host in hosts:
# Filter them by host_name
vms = VM_POOL.by_host(host.key)
# Filter them by status
vms = VM_POOL.except_status("REQUESTED_NEW", vms=vms)
vms = VM_POOL.except_status(VMStatus.requested_new, vms)
running_vms_specs = [vm.specs for vm in vms]
# Accumulate all of their combined specs
@ -109,11 +107,11 @@ def dead_host_mitigation(dead_hosts_keys):
def assign_host(vm):
host_name = get_suitable_host(vm.specs)
if host_name:
if vm.status == "REQUESTED_NEW":
vm.status = "SCHEDULED_DEPLOY"
if vm.status == VMStatus.requested_new:
vm.status = VMStatus.scheduled_deploy
if vm.status == "KILLED":
vm.status = "REQUESTED_START"
if vm.status == VMStatus.killed:
vm.status = VMStatus.requested_start
vm.hostname = host_name
VM_POOL.put(vm)
@ -134,7 +132,7 @@ def main(vm_prefix, host_prefix):
PENDING_VMS = []
for events_iterator in [
client.get_prefix(vm_prefix, value_in_json=True),
client.watch_prefix(vm_prefix, timeout=10, value_in_json=True),
client.watch_prefix(vm_prefix, timeout=5, value_in_json=True),
]:
for e in events_iterator:
e = VMEntry(e)
@ -157,7 +155,7 @@ def main(vm_prefix, host_prefix):
for vm in vm_scheduled:
PENDING_VMS.remove(vm)
logging.debug(f"Remaining Pending: {PENDING_VMS}")
elif e.status in ["REQUESTED_NEW", "KILLED"]:
elif e.status in [VMStatus.requested_new, VMStatus.killed]:
if assign_host(e) is None:
PENDING_VMS.append(e)
logging.info("No Resource Left. Emailing admin....")