#!/usr/bin/env python3

# Copyright 2016 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.



import argparse
import logging
import sys

from runner import Runner

_log = logging.getLogger('main')


def parse_args():
  parser = argparse.ArgumentParser(
      description="""
      Run a DNS performance test on a kubernetes cluster. Assumes a
      working `kubectl` executable.
      """)
  parser.add_argument(
      '--kubectl-exec', type=str, default='kubectl',
      help='location of the kubectl executable')
  parser.add_argument(
      '--dns-server', type=str, default='kube-dns',
      help='the type of dns server (kube-dns or coredns)')
  parser.add_argument(
      '--deployment-yaml', type=str, default='',
      help='yaml for the dns server deployment')
  parser.add_argument(
      '--service-yaml', type=str, default='',
      help='yaml for the dns server service')
  parser.add_argument(
      '--configmap-yaml', type=str, default='',
      help='yaml for the dns server configmap')
  parser.add_argument(
      '--dnsperf-yaml', type=str, default='cluster/dnsperf-deploy.yaml',
      help='yaml for the dnsperf client')
  parser.add_argument(
      '--query-dir', type=str, default='queries/',
      help='location of query files')
  parser.add_argument(
      '--params', type=str, required=True,
      help='perf test parameters')
  parser.add_argument(
      '--run-large-queries', action='store_true',
      help='runs large example query file from dnsperf repo')
  parser.add_argument(
      '--testsvc-yaml', type=str, default='cluster/testsvc.yaml',
      help='yaml for creating test services to be queried by dnsperf')
  parser.add_argument(
      '--out-dir', type=str, default='out',
      help='output directory')
  parser.add_argument(
      '--db', type=str, required=False,
      help='if set, put results in db for analysis')
  parser.add_argument(
      '--client-node', type=str,
      help='if set, force the client pod to be created on the given node')
  parser.add_argument(
      '--server-node', type=str,
      help='if set, force the server pod to be created on the given node')
  parser.add_argument(
      '--use-cluster-dns', action='store_true',
      help='if set, use cluster DNS instead of creating one')
  parser.add_argument(
      '--dns-ip', type=str, default='10.0.0.20',
      help='IP to use for the DNS service. Note: --use-cluster-dns '
        'implicitly sets the service-ip of kube-dns service')
  parser.add_argument(
      '--nodecache-ip', type=str, default='',
      help='IP of existing node-cache service to use for testing')
  parser.add_argument(
      '-v', '--verbose', action='store_true',
      help='show verbose logging')
  parser.add_argument(
      '--single-node', action='store_true',
      help='allow test to run on a single node (for local development only)')

  return parser.parse_args()


if __name__ == '__main__':
  args = parse_args()

  if args.dns_server == "kube-dns":
    if not args.deployment_yaml:
      args.deployment_yaml = 'cluster/kube-dns-deployment.yaml'
    if not args.service_yaml:
      args.service_yaml = 'cluster/kube-dns-service.yaml'

  if args.dns_server == "coredns":
    if not args.deployment_yaml:
      args.deployment_yaml = 'cluster/coredns-deployment.yaml'
    if not args.service_yaml:
      args.service_yaml = 'cluster/coredns-service.yaml'
    if not args.configmap_yaml:
      args.configmap_yaml = 'cluster/coredns-configmap.yaml'

  logging.basicConfig(
      level=logging.DEBUG if args.verbose else logging.INFO,
      format='%(levelname)s %(asctime)s %(filename)s:%(lineno)d] %(message)s',
      datefmt="%m-%d %H:%M:%S")

  runner = Runner(args)
  sys.exit(runner.go())