+SSCONF_LOCK_TIMEOUT = 10
+
+RE_VALID_SSCONF_NAME = re.compile(r'^[-_a-z0-9]+$')
+
+
+class SimpleConfigReader(object):
+ """Simple class to read configuration file.
+
+ """
+ def __init__(self, file_name=constants.CLUSTER_CONF_FILE):
+ """Initializes this class.
+
+ @type file_name: string
+ @param file_name: Configuration file path
+
+ """
+ self._file_name = file_name
+ self._last_inode = None
+ self._last_mtime = None
+ self._last_size = None
+
+ self._config_data = None
+ self._inst_ips_by_link = None
+ self._ip_to_inst_by_link = None
+ self._instances_ips = None
+ self._mc_primary_ips = None
+ self._nodes_primary_ips = None
+
+ # we need a forced reload at class init time, to initialize _last_*
+ self._Load(force=True)
+
+ def _Load(self, force=False):
+ """Loads (or reloads) the config file.
+
+ @type force: boolean
+ @param force: whether to force the reload without checking the mtime
+ @rtype: boolean
+ @return: boolean value that says whether we reloaded the configuration or
+ not (because we decided it was already up-to-date)
+
+ """
+ try:
+ cfg_stat = os.stat(self._file_name)
+ except EnvironmentError, err:
+ raise errors.ConfigurationError("Cannot stat config file %s: %s" %
+ (self._file_name, err))
+ inode = cfg_stat.st_ino
+ mtime = cfg_stat.st_mtime
+ size = cfg_stat.st_size
+
+ if (force or inode != self._last_inode or
+ mtime > self._last_mtime or
+ size != self._last_size):
+ self._last_inode = inode
+ self._last_mtime = mtime
+ self._last_size = size
+ else:
+ # Don't reload
+ return False
+
+ try:
+ self._config_data = serializer.Load(utils.ReadFile(self._file_name))
+ except EnvironmentError, err:
+ raise errors.ConfigurationError("Cannot read config file %s: %s" %
+ (self._file_name, err))
+ except ValueError, err:
+ raise errors.ConfigurationError("Cannot load config file %s: %s" %
+ (self._file_name, err))
+
+ self._ip_to_inst_by_link = {}
+ self._instances_ips = []
+ self._inst_ips_by_link = {}
+ c_nparams = self._config_data['cluster']['nicparams'][constants.PP_DEFAULT]
+ for iname in self._config_data['instances']:
+ instance = self._config_data['instances'][iname]
+ for nic in instance['nics']:
+ if 'ip' in nic and nic['ip']:
+ params = objects.FillDict(c_nparams, nic['nicparams'])
+ if not params['link'] in self._inst_ips_by_link:
+ self._inst_ips_by_link[params['link']] = []
+ self._ip_to_inst_by_link[params['link']] = {}
+ self._ip_to_inst_by_link[params['link']][nic['ip']] = iname
+ self._inst_ips_by_link[params['link']].append(nic['ip'])
+
+ self._nodes_primary_ips = []
+ self._mc_primary_ips = []
+ for node_name in self._config_data["nodes"]:
+ node = self._config_data["nodes"][node_name]
+ self._nodes_primary_ips.append(node["primary_ip"])
+ if node["master_candidate"]:
+ self._mc_primary_ips.append(node["primary_ip"])
+
+ return True
+
+ # Clients can request a reload of the config file, so we export our internal
+ # _Load function as Reload.
+ Reload = _Load
+
+ def GetClusterName(self):
+ return self._config_data["cluster"]["cluster_name"]
+
+ def GetHostKey(self):
+ return self._config_data["cluster"]["rsahostkeypub"]
+
+ def GetMasterNode(self):
+ return self._config_data["cluster"]["master_node"]
+
+ def GetMasterIP(self):
+ return self._config_data["cluster"]["master_ip"]
+
+ def GetMasterNetdev(self):
+ return self._config_data["cluster"]["master_netdev"]
+
+ def GetFileStorageDir(self):
+ return self._config_data["cluster"]["file_storage_dir"]
+
+ def GetNodeList(self):
+ return self._config_data["nodes"].keys()
+
+ def GetConfigSerialNo(self):
+ return self._config_data["serial_no"]
+
+ def GetClusterSerialNo(self):
+ return self._config_data["cluster"]["serial_no"]
+
+ def GetDefaultNicParams(self):
+ return self._config_data["cluster"]["nicparams"][constants.PP_DEFAULT]
+
+ def GetDefaultNicLink(self):
+ return self.GetDefaultNicParams()[constants.NIC_LINK]
+
+ def GetNodeStatusFlags(self, node):
+ """Get a node's status flags
+
+ @type node: string
+ @param node: node name
+ @rtype: (bool, bool, bool)
+ @return: (master_candidate, drained, offline) (or None if no such node)
+
+ """
+ if node not in self._config_data["nodes"]:
+ return None
+
+ master_candidate = self._config_data["nodes"][node]["master_candidate"]
+ drained = self._config_data["nodes"][node]["drained"]
+ offline = self._config_data["nodes"][node]["offline"]
+ return master_candidate, drained, offline
+
+ def GetInstanceByLinkIp(self, ip, link):
+ """Get instance name from its link and ip address.
+
+ @type ip: string
+ @param ip: ip address
+ @type link: string
+ @param link: nic link
+ @rtype: string
+ @return: instance name
+
+ """
+ if not link:
+ link = self.GetDefaultNicLink()
+ if not link in self._ip_to_inst_by_link:
+ return None
+ if not ip in self._ip_to_inst_by_link[link]:
+ return None
+ return self._ip_to_inst_by_link[link][ip]
+
+ def GetNodePrimaryIp(self, node):
+ """Get a node's primary ip
+
+ @type node: string
+ @param node: node name
+ @rtype: string, or None
+ @return: node's primary ip, or None if no such node
+
+ """
+ if node not in self._config_data["nodes"]:
+ return None
+ return self._config_data["nodes"][node]["primary_ip"]
+
+ def GetInstancePrimaryNode(self, instance):
+ """Get an instance's primary node
+
+ @type instance: string
+ @param instance: instance name
+ @rtype: string, or None
+ @return: primary node, or None if no such instance
+
+ """
+ if instance not in self._config_data["instances"]:
+ return None
+ return self._config_data["instances"][instance]["primary_node"]
+
+ def GetNodesPrimaryIps(self):
+ return self._nodes_primary_ips
+
+ def GetMasterCandidatesPrimaryIps(self):
+ return self._mc_primary_ips
+
+ def GetInstancesIps(self, link):
+ """Get list of nic ips connected to a certain link.
+
+ @type link: string
+ @param link: nic link
+ @rtype: list
+ @return: list of ips connected to that link
+
+ """
+ if not link:
+ link = self.GetDefaultNicLink()
+
+ if link in self._inst_ips_by_link:
+ return self._inst_ips_by_link[link]
+ else:
+ return []
+
+
+class SimpleStore(object):
projects / ganeti-local / blobdiff