117 lines
3.3 KiB
Python
117 lines
3.3 KiB
Python
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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class Group(object):
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''' a group of ansible hosts '''
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__slots__ = [ 'name', 'hosts', 'vars', 'child_groups', 'parent_groups', 'depth', '_hosts_cache' ]
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def __init__(self, name=None):
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self.depth = 0
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self.name = name
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self.hosts = []
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self.vars = {}
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self.child_groups = []
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self.parent_groups = []
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self._hosts_cache = None
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#self.clear_hosts_cache()
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if self.name is None:
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raise Exception("group name is required")
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def add_child_group(self, group):
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if self == group:
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raise Exception("can't add group to itself")
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# don't add if it's already there
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if not group in self.child_groups:
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self.child_groups.append(group)
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# update the depth of the child
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group.depth = max([self.depth+1, group.depth])
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# update the depth of the grandchildren
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group._check_children_depth()
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# now add self to child's parent_groups list, but only if there
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# isn't already a group with the same name
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if not self.name in [g.name for g in group.parent_groups]:
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group.parent_groups.append(self)
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self.clear_hosts_cache()
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def _check_children_depth(self):
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for group in self.child_groups:
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group.depth = max([self.depth+1, group.depth])
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group._check_children_depth()
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def add_host(self, host):
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self.hosts.append(host)
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host.add_group(self)
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self.clear_hosts_cache()
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def set_variable(self, key, value):
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self.vars[key] = value
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def clear_hosts_cache(self):
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self._hosts_cache = None
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for g in self.parent_groups:
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g.clear_hosts_cache()
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def get_hosts(self):
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if self._hosts_cache is None:
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self._hosts_cache = self._get_hosts()
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return self._hosts_cache
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def _get_hosts(self):
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hosts = []
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seen = {}
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for kid in self.child_groups:
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kid_hosts = kid.get_hosts()
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for kk in kid_hosts:
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if kk not in seen:
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seen[kk] = 1
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hosts.append(kk)
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for mine in self.hosts:
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if mine not in seen:
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seen[mine] = 1
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hosts.append(mine)
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return hosts
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def get_variables(self):
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return self.vars.copy()
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def _get_ancestors(self):
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results = {}
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for g in self.parent_groups:
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results[g.name] = g
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results.update(g._get_ancestors())
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return results
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def get_ancestors(self):
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return self._get_ancestors().values()
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