def allocation(self):
allocations = Sense.allocations()
if self.group_id in allocations:
return allocations[self.group_id]
else:
return {"instances": {}}
def allocate(memory, anti_affinity = []):
docker_hosts = [h for h in Sense.docker_hosts()
if (h['status'] == 'passing' and
'im' in h['tags'])]
if not docker_hosts:
raise RuntimeError("There are no healthy docker nodes")
blueprints = Sense.blueprints()
allocations = Sense.allocations()
memory_used = {h['addr'].split(':')[0]: 0 for h in docker_hosts}
for group_id, blueprint in blueprints.items():
if group_id not in allocations:
continue
memsize = blueprint['memsize']
for instance in allocations[group_id]['instances'].values():
host = instance['host'].split(':')[0]
memory_used[host] = memory_used.get(host, 0) + memsize
scores = []
for docker_host in docker_hosts:
addr = docker_host['addr'].split(':')[0]
free_mem = docker_host['memory'] - memory_used[addr]
affinity = 0 if addr in anti_affinity else 1
scores.append((affinity, free_mem, docker_host))
sorted_scores = sorted(scores, reverse=True,
key=lambda k: k[0:2])
for score in sorted_scores:
docker_host = score[2]
addr = docker_host['addr'].split(':')[0]
free_mem = docker_host['memory'] - memory_used[addr]
if free_mem > memory:
logging.info("Allocating new instance with %d MiB memory at '%s'",
memory,
addr)
return addr
docker_host = sorted_scores[0][2]
addr = docker_host['addr'].split(':')[0]
logging.info("There were no hosts with %d MiB of free memory, " +
"so allocating instance on '%s'",
memory,
addr)
return addr
def allocate(memory, anti_affinity=[]):
docker_hosts = [
h for h in Sense.docker_hosts()
if (h['status'] == 'passing' and 'im' in h['tags'])
]
if not docker_hosts:
raise RuntimeError("There are no healthy docker nodes")
blueprints = Sense.blueprints()
allocations = Sense.allocations()
memory_used = {h['addr'].split(':')[0]: 0 for h in docker_hosts}
for group_id, blueprint in blueprints.items():
if group_id not in allocations:
continue
memsize = blueprint['memsize']
for instance in allocations[group_id]['instances'].values():
host = instance['host'].split(':')[0]
memory_used[host] = memory_used.get(host, 0) + memsize
scores = []
for docker_host in docker_hosts:
addr = docker_host['addr'].split(':')[0]
free_mem = docker_host['memory'] - memory_used[addr]
affinity = 0 if addr in anti_affinity else 1
scores.append((affinity, free_mem, docker_host))
sorted_scores = sorted(scores, reverse=True, key=lambda k: k[0:2])
for score in sorted_scores:
docker_host = score[2]
addr = docker_host['addr'].split(':')[0]
free_mem = docker_host['memory'] - memory_used[addr]
if free_mem > memory:
logging.info("Allocating new instance with %d MiB memory at '%s'",
memory, addr)
return addr
docker_host = sorted_scores[0][2]
addr = docker_host['addr'].split(':')[0]
logging.info(
"There were no hosts with %d MiB of free memory, " +
"so allocating instance on '%s'", memory, addr)
return addr
