5 parser = argparse.ArgumentParser()
6 parser.add_argument('templates', nargs='+')
7 parser.add_argument('--master-role', nargs='?',
8 help='Translate slave_roles to this')
9 parser.add_argument('--slave-roles', nargs='*',
10 help='Translate all of these to master_role')
12 args = parser.parse_args()
14 templates = args.templates
16 def _translate_role(role):
18 if not args.master_role:
20 if role == args.master_role:
22 if role not in args.slave_roles:
24 return args.master_role
26 def translate_role(role):
27 r = _translate_role(role)
28 if not isinstance(r, basestring):
29 raise Exception('%s -> %r' % (role, r))
32 def resolve_params(item, param, value):
33 if item == {'Ref': param}:
35 if isinstance(item, dict):
36 copy_item = dict(item)
37 for k, v in iter(copy_item.items()):
38 item[k] = resolve_params(v, param, value)
39 elif isinstance(item, list):
40 copy_item = list(item)
43 new_item.append(resolve_params(v, param, value))
47 MERGABLE_TYPES = {'OS::Nova::Server':
54 def resolve_includes(template, params=None):
58 for key, value in iter(template.items()):
59 if key == '__include__':
60 new_params = dict(params) # do not propagate up the stack
61 if not isinstance(value, dict):
62 raise ValueError('__include__ must be a mapping')
63 if 'path' not in value:
64 raise ValueError('__include__ must have path')
66 if not isinstance(value['params'], dict):
67 raise ValueError('__include__ params must be a mapping')
68 new_params.update(value['params'])
69 with open(value['path']) as include_file:
70 sub_template = yaml.safe_load(include_file.read())
72 if ((not isinstance(value['subkey'], int)
73 and not isinstance(sub_template, dict))):
74 raise RuntimeError('subkey requires mapping root or'
75 ' integer for list root')
76 sub_template = sub_template[value['subkey']]
77 for k, v in iter(new_params.items()):
78 sub_template = resolve_params(sub_template, k, v)
79 new_template.update(resolve_includes(sub_template))
81 if isinstance(value, dict):
82 new_template[key] = resolve_includes(value)
84 new_template[key] = value
88 end_template={'HeatTemplateFormatVersion': '2012-12-12',
91 for template_path in templates:
92 template = yaml.safe_load(open(template_path))
93 # Resolve __include__ tags
94 template = resolve_includes(template)
95 end_template['Description'].append(template.get('Description',
97 new_parameters = template.get('Parameters', {})
98 for p, pbody in sorted(new_parameters.items()):
99 if p in end_template.get('Parameters', {}):
100 if pbody != end_template['Parameters'][p]:
101 errors.append('Parameter %s from %s conflicts.' % (p,
104 if 'Parameters' not in end_template:
105 end_template['Parameters'] = {}
106 end_template['Parameters'][p] = pbody
108 new_outputs = template.get('Outputs', {})
109 for o, obody in sorted(new_outputs.items()):
110 if o in end_template.get('Outputs', {}):
111 if pbody != end_template['Outputs'][p]:
112 errors.append('Output %s from %s conflicts.' % (o,
115 if 'Outputs' not in end_template:
116 end_template['Outputs'] = {}
117 end_template['Outputs'][o] = obody
119 new_resources = template.get('Resources', {})
120 for r, rbody in sorted(new_resources.items()):
121 if rbody['Type'] in MERGABLE_TYPES:
122 image_key = MERGABLE_TYPES[rbody['Type']]['image']
123 # XXX Assuming ImageId is always a Ref
124 ikey_val = end_template['Parameters'][rbody['Properties'][image_key]['Ref']]
125 del end_template['Parameters'][rbody['Properties'][image_key]['Ref']]
126 role = rbody.get('Metadata', {}).get('OpenStack::Role', r)
127 role = translate_role(role)
129 resource_changes.append((r, role))
130 if role in end_template.get('Resources', {}):
131 new_metadata = rbody.get('Metadata', {})
132 for m, mbody in iter(new_metadata.items()):
133 if m in end_template['Resources'][role].get('Metadata', {}):
134 if m == 'OpenStack::ImageBuilder::Elements':
135 end_template['Resources'][role]['Metadata'][m].extend(mbody)
137 if mbody != end_template['Resources'][role]['Metadata'][m]:
138 errors.append('Role %s metadata key %s conflicts.' %
141 end_template['Resources'][role]['Metadata'][m] = mbody
143 if 'Resources' not in end_template:
144 end_template['Resources'] = {}
145 end_template['Resources'][role] = rbody
146 ikey = '%sImage' % (role)
147 end_template['Resources'][role]['Properties'][image_key] = {'Ref': ikey}
148 end_template['Parameters'][ikey] = ikey_val
149 elif rbody['Type'] == 'FileInclude':
150 with open(rbody['Path']) as rfile:
151 include_content = yaml.safe_load(rfile.read())
152 subkeys = rbody.get('SubKey','').split('.')
153 while len(subkeys) and subkeys[0]:
154 include_content = include_content[subkeys.pop(0)]
155 for replace_param, replace_value in iter(rbody.get('Parameters',
157 include_content = resolve_params(include_content,
160 end_template['Resources'][r] = include_content
162 if r in end_template.get('Resources', {}):
163 if rbody != end_template['Resources'][r]:
164 errors.append('Resource %s from %s conflicts' % (r,
167 if 'Resources' not in end_template:
168 end_template['Resources'] = {}
169 end_template['Resources'][r] = rbody
171 def fix_ref(item, old, new):
172 if isinstance(item, dict):
173 copy_item = dict(item)
174 for k, v in sorted(copy_item.items()):
175 if k == 'Ref' and v == old:
178 if k == 'DependsOn' and v == old:
181 if k == 'Fn::GetAtt' and isinstance(v, list) and v[0] == old:
186 if k == 'AllowedResources' and isinstance(v, list) and old in v:
192 elif isinstance(item, list):
193 copy_item = list(item)
197 for change in resource_changes:
198 fix_ref(end_template, change[0], change[1])
202 sys.stderr.write("ERROR: %s\n" % e)
203 end_template['Description'] = ','.join(end_template['Description'])
204 sys.stdout.write(yaml.safe_dump(end_template, default_flow_style=False))