mirror of https://github.com/ansible/ansible.git
Script to migrate YAML users to the INI format, so we can deprecate YAML inventory (which we are now doing).
Michael DeHaan
12 years ago
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# (c) 2012, 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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import ansible.constants as C
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from ansible.inventory.host import Host
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from ansible.inventory.group import Group
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from ansible import errors
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from ansible import utils
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import os
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import yaml
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import sys
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class InventoryParserYaml(object):
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''' Host inventory parser for ansible '''
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def __init__(self, filename=C.DEFAULT_HOST_LIST):
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sys.stderr.write("WARNING: YAML inventory files are deprecated in 0.6 and will be removed in 0.7, to migrate" +
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" download and run https://github.com/ansible/ansible/blob/devel/examples/scripts/yaml_to_ini.py\n")
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fh = open(filename)
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data = fh.read()
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fh.close()
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self._hosts = {}
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self._parse(data)
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def _make_host(self, hostname):
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if hostname in self._hosts:
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return self._hosts[hostname]
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else:
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host = Host(hostname)
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self._hosts[hostname] = host
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return host
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# see file 'test/yaml_hosts' for syntax
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def _parse(self, data):
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# FIXME: refactor into subfunctions
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all = Group('all')
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ungrouped = Group('ungrouped')
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all.add_child_group(ungrouped)
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self.groups = dict(all=all, ungrouped=ungrouped)
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grouped_hosts = []
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yaml = utils.parse_yaml(data)
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# first add all groups
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for item in yaml:
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if type(item) == dict and 'group' in item:
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group = Group(item['group'])
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for subresult in item.get('hosts',[]):
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if type(subresult) in [ str, unicode ]:
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host = self._make_host(subresult)
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group.add_host(host)
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grouped_hosts.append(host)
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elif type(subresult) == dict:
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host = self._make_host(subresult['host'])
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vars = subresult.get('vars',{})
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if type(vars) == list:
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for subitem in vars:
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for (k,v) in subitem.items():
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host.set_variable(k,v)
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elif type(vars) == dict:
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for (k,v) in subresult.get('vars',{}).items():
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host.set_variable(k,v)
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else:
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raise errors.AnsibleError("unexpected type for variable")
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group.add_host(host)
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grouped_hosts.append(host)
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vars = item.get('vars',{})
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if type(vars) == dict:
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for (k,v) in item.get('vars',{}).items():
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group.set_variable(k,v)
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elif type(vars) == list:
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for subitem in vars:
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if type(subitem) != dict:
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raise errors.AnsibleError("expected a dictionary")
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for (k,v) in subitem.items():
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group.set_variable(k,v)
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self.groups[group.name] = group
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all.add_child_group(group)
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# add host definitions
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for item in yaml:
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if type(item) in [ str, unicode ]:
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host = self._make_host(item)
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if host not in grouped_hosts:
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ungrouped.add_host(host)
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elif type(item) == dict and 'host' in item:
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host = self._make_host(item['host'])
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vars = item.get('vars', {})
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if type(vars)==list:
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varlist, vars = vars, {}
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for subitem in varlist:
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vars.update(subitem)
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for (k,v) in vars.items():
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host.set_variable(k,v)
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groups = item.get('groups', {})
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if type(groups) in [ str, unicode ]:
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groups = [ groups ]
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if type(groups)==list:
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for subitem in groups:
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if subitem in self.groups:
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group = self.groups[subitem]
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else:
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group = Group(subitem)
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self.groups[group.name] = group
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all.add_child_group(group)
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group.add_host(host)
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grouped_hosts.append(host)
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if host not in grouped_hosts:
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ungrouped.add_host(host)
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# make sure ungrouped.hosts is the complement of grouped_hosts
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ungrouped_hosts = [host for host in ungrouped.hosts if host not in grouped_hosts]
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if __name__ == "__main__":
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if len(sys.argv) != 2:
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print "usage: yaml_to_ini.py /path/to/ansible/hosts"
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sys.exit(1)
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result = ""
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original = sys.argv[1]
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yamlp = InventoryParserYaml(filename=sys.argv[1])
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dirname = os.path.dirname(original)
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group_names = [ g.name for g in yamlp.groups.values() ]
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for group_name in sorted(group_names):
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record = yamlp.groups[group_name]
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if group_name == 'all':
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continue
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hosts = record.hosts
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result = result + "[%s]\n" % record.name
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for h in hosts:
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result = result + "%s\n" % h.name
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result = result + "\n"
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groupfiledir = os.path.join(dirname, "group_vars")
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if not os.path.exists(groupfiledir):
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print "* creating: %s" % groupfiledir
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os.makedirs(groupfiledir)
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groupfile = os.path.join(groupfiledir, group_name)
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print "* writing group variables for %s into %s" % (group_name, groupfile)
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groupfh = open(groupfile, 'w')
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groupfh.write(yaml.dump(record.get_variables()))
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groupfh.close()
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for (host_name, host_record) in yamlp._hosts.iteritems():
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hostfiledir = os.path.join(dirname, "host_vars")
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if not os.path.exists(hostfiledir):
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print "* creating: %s" % hostfiledir
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os.makedirs(hostfiledir)
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hostfile = os.path.join(hostfiledir, host_record.name)
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print "* writing host variables for %s into %s" % (host_record.name, hostfile)
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hostfh = open(hostfile, 'w')
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hostfh.write(yaml.dump(host_record.get_variables()))
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hostfh.close()
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# also need to keep a hash of variables per each host
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# and variables per each group
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# and write those to disk
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newfilepath = os.path.join(dirname, "hosts.new")
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fdh = open(newfilepath, 'w')
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fdh.write(result)
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fdh.close()
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print "* COMPLETE: review your new inventory file and replace your original when ready"
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print "* new inventory file saved as %s" % newfilepath
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print "* edit group specific variables in %s/group_vars/" % dirname
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print "* edit host specific variables in %s/host_vars/" % dirname
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# now need to write this to disk as (oldname).new
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# and inform the user
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