# Copyright 2013-2014 Eucalyptus Systems, Inc.
#
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# with or without modification, are permitted provided that the following
# conditions are met:
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# this list of conditions and the following disclaimer.
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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from euca2ools.commands.elasticloadbalancing import ELBRequest
from requestbuilder import Arg
from requestbuilder.exceptions import ArgumentError
from requestbuilder.mixins import TabifyingMixin
class ConfigureHealthCheck(ELBRequest, TabifyingMixin):
DESCRIPTION = ('Configure health checking for instance registerd with a '
'load balancer')
ARGS = [Arg('LoadBalancerName', metavar='ELB',
help='name of the load balancer to modify (required)'),
Arg('--healthy-threshold', dest='HealthCheck.HealthyThreshold',
metavar='COUNT', type=int, required=True,
help='''number of consecutive successful health checks that
will mark instances as Healthy (required)'''),
Arg('--interval', dest='HealthCheck.Interval', metavar='SECONDS',
type=int, required=True,
help='approximate interval between health checks (required)'),
Arg('-t', '--target', dest='HealthCheck.Target',
metavar='PROTOCOL:PORT[/PATH]', required=True,
help='connection target for health checks (required)'),
Arg('--timeout', dest='HealthCheck.Timeout', metavar='SECONDS',
type=int, required=True,
help='maximum health check duration (required)'),
Arg('--unhealthy-threshold', dest='HealthCheck.UnhealthyThreshold',
metavar='COUNT', type=int, required=True,
help='''number of consecutive failed health checks that will
mark instances as Unhealthy (required)''')]
# noinspection PyExceptionInherit
def configure(self):
ELBRequest.configure(self)
target = self.args['HealthCheck.Target']
protocol, _, rest = target.partition(':')
if not rest:
raise ArgumentError('argument -t/--target: must have form '
'PROTOCOL:PORT[/PATH]')
if protocol.lower() in ('http', 'https') and '/' not in rest:
raise ArgumentError('argument -t/--target: path is required for '
"protocol '{0}'".format(protocol))
def preprocess(self):
# Be nice and auto-capitalize known protocols for people
target = self.args['HealthCheck.Target']
protocol = target.split(':', 1)[0]
if protocol.lower() in ('http', 'https', 'ssl', 'tcp'):
self.params['HealthCheck.Target'] = target.replace(
protocol, protocol.upper(), 1)
def print_result(self, result):
check = result.get('HealthCheck', {})
print self.tabify(('HEALTH_CHECK', check.get('Target'),
check.get('Interval'), check.get('Timeout'),
check.get('HealthyThreshold'),
check.get('UnhealthyThreshold')))