dhcp-stats-prometheus.py 文件源码

def prometheus_metrics():
    if not test_restricted(request['REMOTE_ADDR']):
        return ''
    dhcpstat = {'shared-networks': []}
    dhcp6stat = {'shared-networks': []}
    try:
        dhcpstat = json.loads(exec_command([args.binary, '-c', args.dhcp4_config, '-l', args.dhcp4_leases, '-f', 'j']))
    except:
        pass
    try:
        dhcp6stat = json.loads(exec_command([args.binary, '-c', args.dhcp6_config, '-l', args.dhcp6_leases, '-f', 'j']))
    except:
        pass
    data = []
    for shared_network in dhcpstat['shared-networks']:
        data.append('dhcp_pool_used{ip_version="%s",network="%s"} %s' % (4,shared_network['location'],shared_network['used']))
        data.append('dhcp_pool_free{ip_version="%s",network="%s"} %s' % (4,shared_network['location'],shared_network['free']))
        defined_leases = float(shared_network['defined'])
        leases_used_percentage = 0
        if defined_leases > 0:
            leases_used_percentage = float(shared_network['used'])/defined_leases
        data.append('dhcp_pool_usage{ip_version="%s",network="%s"} %s' % (4,shared_network['location'],leases_used_percentage))
    for shared_network in dhcp6stat['shared-networks']:
        data.append('dhcp_pool_used{ip_version="%s",network="%s"} %s' % (6,shared_network['location'],shared_network['used']))
        data.append('dhcp_pool_free{ip_version="%s",network="%s"} %s' % (6,shared_network['location'],shared_network['free']))
        defined_leases = float(shared_network['defined'])
        leases_used_percentage = 0
        if defined_leases > 0:
            leases_used_percentage = float(shared_network['used'])/defined_leases
        data.append('dhcp_pool_usage{ip_version="%s",network="%s"} %s' % (6,shared_network['location'],leases_used_percentage))
    response.content_type = 'text/plain'
    return '%s\n' % ('\n'.join(data))