cmansibleplaybooks.py

   1 # Copyright 2019 Nokia
   2
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14 import os
  15 from cmframework.utils import cmtopologicalsort
  16
  17
  18 class AnsiblePlaybooks(object):
  19     bootstrapping_playbook = 'bootstrapping-playbook.yml'
  20     provisioning_playbook = 'provisioning-playbook.yml'
  21     postconfig_playbook = 'postconfig-playbook.yml'
  22     finalize_playbook = 'finalize-playbook.yml'
  23     progress_playbook = 'report_installation_progress.yml'
  24
  25     def __init__(self, dest, bootstrapping_path, provisioning_path, postconfig_path, finalize_path):
  26         self.dest = dest
  27         self.bootstrapping_path = bootstrapping_path
  28         self.provisioning_path = provisioning_path
  29         self.postconfig_path = postconfig_path
  30         self.finalize_path = finalize_path
  31
  32     def generate_playbooks(self):
  33         bootstrapping_lists, bootstrapping_size = self._get_playbook_lists(self.bootstrapping_path)
  34         provisioning_lists, provisioning_size = self._get_playbook_lists(self.provisioning_path)
  35         postconfig_lists, postconfig_size = self._get_playbook_lists(self.postconfig_path)
  36         finalize_lists, finalize_size = self._get_playbook_lists(self.finalize_path)
  37
  38         number_of_playbooks = bootstrapping_size+provisioning_size+postconfig_size+finalize_size
  39
  40         playbook_percentage_value = 99.0 / number_of_playbooks
  41
  42         self._generate_playbook(bootstrapping_lists,
  43                                 self.bootstrapping_playbook,
  44                                 0,
  45                                 playbook_percentage_value)
  46
  47         progress_start = bootstrapping_size*playbook_percentage_value
  48         self._generate_playbook(provisioning_lists,
  49                                 self.provisioning_playbook,
  50                                 progress_start,
  51                                 playbook_percentage_value)
  52         progress_start = (bootstrapping_size+provisioning_size)*playbook_percentage_value
  53         self._generate_playbook(postconfig_lists, self.postconfig_playbook,
  54                                 progress_start, playbook_percentage_value)
  55         progress_start = (bootstrapping_size +
  56                           provisioning_size+postconfig_size)*playbook_percentage_value
  57         self._generate_playbook(finalize_lists,
  58                                 self.finalize_playbook,
  59                                 progress_start,
  60                                 playbook_percentage_value)
  61
  62     def _get_playbook_lists(self, directory):
  63         graph = self._get_dependency_graph(directory)
  64         topsort = cmtopologicalsort.TopSort(graph)
  65         sortedlists = topsort.sort()
  66
  67         size = 0
  68         for entry in sortedlists:
  69             size += len(entry)
  70
  71         return sortedlists, size
  72
  73     def _generate_playbook(self, sortedlists, name, progress_start, playbook_percentage_value):
  74         progress = progress_start
  75         with open(self.dest + '/' + name, 'w') as f:
  76             for entry in sortedlists:
  77                 for e in entry:
  78                     f.write('- import_playbook: ' + self.progress_playbook +
  79                             ' installation_progress_phase=' + name +
  80                             ' installation_progress_playbook=' + e +
  81                             ' installation_progress=' + str(progress) + '\n')
  82                     f.write('- import_playbook: ' + e + '\n')
  83                     progress = progress+playbook_percentage_value
  84
  85     def _get_dependency_graph(self, directory):
  86         entries = os.listdir(directory)
  87         graph = {}
  88         for entry in entries:
  89             entryfull = directory + '/' + entry
  90             if os.path.isfile(entryfull) or os.path.islink(entryfull):
  91                 requires = self._get_required_playbooks(entryfull)
  92                 existing_requires = []
  93                 for require in requires:
  94                     requirefull = directory + '/' + require
  95                     if os.path.exists(requirefull):
  96                         existing_requires.append(require)
  97                 graph[entry] = existing_requires
  98
  99         return graph
 100
 101     @staticmethod
 102     def _get_required_playbooks(playbook):
 103         requires = []
 104         with open(playbook) as f:
 105             lines = f.read().splitlines()
 106             # parse the lines containing:
 107             # cmframework.requires: <comma separated list of playbooks>
 108             for line in lines:
 109                 if 'cmframework.requires:' in line:
 110                     data = line.split(':')
 111                     if len(data) != 2:
 112                         continue
 113                     tmp = data[1].replace(" ", "")
 114                     requires = tmp.split(',')
 115                     break
 116
 117         return requires
 118
 119
 120 if __name__ == '__main__':
 121     playbooks = AnsiblePlaybooks('/tmp/', '/etc/lcm/playbooks/installation/bootstrapping',
 122                                  '/etc/lcm/playbooks/installation/provisioning',
 123                                  '/etc/lcm/playbooks/installation/postconfig',
 124                                  '/etc/lcm/playbooks/installation/finalize')
 125     playbooks.generate_playbooks()