171 lines
5.8 KiB
Python
Executable File
171 lines
5.8 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This is a utility intended to split a single common.yaml file from
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# a hieradata dir into a common.yaml / group/$::group.yaml / fqdn/$::fqdn.yaml
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# structure.
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# Values associated with the default node go into common.yaml
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# Values associated with a node that has a group and is specified with a
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# regex go into the group
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# Values associated with a node that has a group but specifies a specific host
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# will go into the fqdn file if they do not also appead in a group-related
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# host.
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#
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# This utility is not intended to solve all problems and is not intended to be
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# run on the same data twice. It's a one-off helper script, and it's
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# potentially destructure. So be prepared to have a backup of your common.yaml
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# file you can revert to after you inspect the output if it got something wrong
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import collections
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import pprint
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import yaml
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import os
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groups = {}
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fqdns = {}
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common = []
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current = None
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current_keys = None
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# from:
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# http://stackoverflow.com/questions/8640959/how-can-i-control-what-scalar-form-pyyaml-uses-for-my-data flake8: noqa
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def should_use_block(value):
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for c in u"\u000a\u000d\u001c\u001d\u001e\u0085\u2028\u2029":
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if c in value:
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return True
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return False
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def my_represent_scalar(self, tag, value, style=None):
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if style is None:
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if should_use_block(value):
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style='|'
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else:
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style = self.default_style
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node = yaml.representer.ScalarNode(tag, value, style=style)
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if self.alias_key is not None:
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self.represented_objects[self.alias_key] = node
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return node
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yaml.representer.BaseRepresenter.represent_scalar = my_represent_scalar
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# end from
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# from: http://pyyaml.org/ticket/64
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class MyDumper(yaml.Dumper):
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def increase_indent(self, flow=False, indentless=False):
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return super(MyDumper, self).increase_indent(flow, False)
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#end from
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manifest_path = os.path.abspath(
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os.path.join(os.path.dirname(__file__), '..', 'manifests/site.pp'))
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with open(manifest_path, 'r') as manifest:
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for line in manifest:
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if line.startswith('#'):
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continue
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if 'node default' in line:
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current_keys = common
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continue
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elif line.startswith('node'):
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current_keys = list()
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current = dict(keys=current_keys)
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if '/' in line:
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name = line.split('/')[1]
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groups[name] = current
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else:
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name = line.split("'")[1]
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fqdns[name] = current
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continue
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if '$group' in line:
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if '"' in line:
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name = line.split('"')[1]
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elif "'" in line:
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name = line.split("'")[1]
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current['group'] = name
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if 'hiera' in line:
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key = line.split("'")[1]
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if key not in common:
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current_keys.append(key)
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new_groups = {}
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for value in groups.values():
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new_groups[value['group']] = dict(keys=value['keys'])
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groups = new_groups
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# Trim group duplicates to just be in the group
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for key, value in fqdns.items():
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if 'group' in value:
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new_keys = []
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for possible_key in value['keys']:
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if possible_key not in groups[value['group']]['keys']:
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new_keys.append(possible_key)
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value['keys'] = new_keys
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# Print the values so that the person running can verify what's going on
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pprint.pprint(dict(common=common, groups=groups, fqdns=fqdns))
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def write_values(reverse_map, target, input_dict, source_vaues, root):
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outdir = os.path.join(root, target)
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if not os.path.exists(outdir):
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os.makedirs(outdir)
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for key, value in input_dict.items():
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output_dict = {}
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for name in value['keys']:
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reverse_map[name].append(dict(target=target, key=key))
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if name in source_values:
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output_dict[name] = source_values[name]
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else:
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print "Requested key not in common.yaml", name
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with open(os.path.join(outdir, '%s.yaml' % key), 'w') as outfile:
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outfile.write(yaml.dump(
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output_dict, default_flow_style=False, Dumper=MyDumper))
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return reverse_map
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def write_common_values(input_dict, source_values, root):
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outdir = root
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if not os.path.exists(outdir):
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os.makedirs(outdir)
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output_dict = {}
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for name in input_dict:
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output_dict[name] = source_values[name]
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with open(os.path.join(outdir, 'common.yaml'), 'w') as outfile:
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outfile.write(yaml.dump(output_dict, default_flow_style=False))
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if os.path.exists('/etc/puppet/hieradata/production/common.yaml'):
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source_values = yaml.load(
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open('/etc/puppet/hieradata/production/common.yaml'))
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root = '/etc/puppet/hieradata/production'
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else:
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def get_default():
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return "Default data"
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source_values = collections.defaultdict(get_default)
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root = 'testoutput'
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write_common_values(common, source_values, root)
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reverse_map = collections.defaultdict(list)
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reverse_map = write_values(reverse_map, 'fqdn', fqdns, source_values, root)
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reverse_map = write_values(reverse_map, 'group', groups, source_values, root)
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for key, value in reverse_map.items():
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if len(value) > 1:
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print "Key %s duplicated in %r" % (key, value)
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