src/nitsi/virtual_environ.py

   1 #!/usr/bin/python3
   2
   3 import configparser
   4 import libvirt
   5 import logging
   6 import os
   7
   8 from . import machine
   9 from . import network
  10
  11 logger = logging.getLogger("nitsi.virtual_environ")
  12
  13 # Should return all vms and networks in a list
  14 # and should provide the path to the necessary xml files
  15 class Virtual_environ():
  16     def __init__(self, path):
  17         self.log = logger.getChild(os.path.basename(os.path.abspath(path)))
  18         try:
  19             self.path = os.path.abspath(path)
  20         except BaseException as e:
  21             self.log.error("Could not get absolute path")
  22             raise e
  23
  24         self.log.debug(self.path)
  25
  26         self.settings_file = "{}/settings".format(self.path)
  27         if not os.path.isfile(self.settings_file):
  28             self.log.error("No such file: {}".format(self.settings_file))
  29
  30         self.log.debug(self.settings_file)
  31         self.config = configparser.ConfigParser()
  32         self.config.read(self.settings_file)
  33         self.name = self.config["DEFAULT"]["name"]
  34         self.machines_string = self.config["DEFAULT"]["machines"]
  35         self.networks_string = self.config["DEFAULT"]["networks"]
  36
  37         self.machines = []
  38         for machine in self.machines_string.split(","):
  39             self.machines.append(machine.strip())
  40
  41         self.networks = []
  42         for network in self.networks_string.split(","):
  43             self.networks.append(network.strip())
  44
  45         self.log.debug(self.machines)
  46         self.log.debug(self.networks)
  47
  48         # Number of characters of the longest machine name
  49         self._longest_machine_name = 0
  50
  51         self.uri = self.config["DEFAULT"]["uri"]
  52
  53         try:
  54             self.con = libvirt.open(self.uri)
  55         except BaseException as error:
  56             self.log.error("Could not connect to: {}".format(self.uri))
  57             raise error
  58
  59         self.log.debug("Connected to: {}".format(self.uri))
  60
  61     def get_networks(self):
  62         networks = {}
  63         for _network in self.networks:
  64             self.log.debug(_network)
  65             networks.setdefault(_network, network.Network(self.con, os.path.normpath(self.path + "/" + self.config[_network]["xml_file"])))
  66         return networks
  67
  68     def get_machines(self):
  69         machines = {}
  70         for _machine in self.machines:
  71             self.log.debug(_machine)
  72             machines.setdefault(_machine, machine.Machine(
  73                 self.con,
  74                 os.path.normpath(self.path + "/" + self.config[_machine]["xml_file"]),
  75                 os.path.normpath(self.path + "/" + self.config[_machine]["snapshot_xml_file"]),
  76                 self.config[_machine]["image"],
  77                 self.config[_machine]["root_uid"],
  78                 self.config[_machine]["username"],
  79                 self.config[_machine]["password"]))
  80
  81         return machines
  82
  83     @property
  84     def machine_names(self):
  85         return self.machines
  86
  87     @property
  88     def network_names(self):
  89         return self.networks
  90
  91     @property
  92     def longest_machine_name(self):
  93         if self._longest_machine_name:
  94             return self._longest_machine_name
  95         else:
  96             for _machine in self.machines:
  97                 if len(_machine) > self._longest_machine_name:
  98                     self._longest_machine_name = len(_machine)
  99
 100             return self._longest_machine_name