#!/usr/bin/env python
import json
import libvirt
import socket

return_data = dict()
conn = libvirt.openReadOnly()
try:
    domains = conn.listDomainsID()
    return_data['kvm_vms'] = len(domains)
    return_data['kvm_total_vcpus'] = conn.getCPUMap()[0]
    return_data['kvm_scheduled_vcpus'] = 0
    for domain in domains:
        return_data['kvm_scheduled_vcpus'] += conn.lookupByID(
            domain
        ).maxVcpus()
    return_data['kvm_host_id'] = abs(hash(socket.getfqdn()))
except Exception:
    raise SystemExit('Plugin failure')
else:
    print(json.dumps(return_data))
finally:
    conn.close()