4 templates = list(sys.argv[1:])
7 end_template={'HeatTemplateFormatVersion': '2012-12-12',
10 for template_path in templates:
11 template = yaml.safe_load(open(template_path))
12 end_template['Description'].append(template.get('Description',
14 new_parameters = template.get('Parameters', {})
15 for p, pbody in iter(new_parameters.items()):
16 if p in end_template.get('Parameters', {}):
17 if pbody != end_template['Parameters'][p]:
18 errors.append('Parameter %s from %s conflicts.' % (p,
21 if 'Parameters' not in end_template:
22 end_template['Parameters'] = {}
23 end_template['Parameters'][p] = pbody
25 new_outputs = template.get('Outputs', {})
26 for o, obody in iter(new_outputs.items()):
27 if o in end_template.get('Outputs', {}):
28 if pbody != end_template['Outputs'][p]:
29 errors.append('Output %s from %s conflicts.' % (o,
32 if 'Outputs' not in end_template:
33 end_template['Outputs'] = {}
34 end_template['Outputs'][o] = obody
36 new_resources = template.get('Resources', {})
37 for r, rbody in iter(new_resources.items()):
38 if rbody['Type'] == 'AWS::EC2::Instance':
39 # XXX Assuming ImageId is always a Ref
40 del end_template['Parameters'][rbody['Properties']['ImageId']['Ref']]
41 role = rbody.get('Metadata', {}).get('OpenStack::Role', r)
43 resource_changes.append((r, role))
44 if role in end_template.get('Resources', {}):
45 new_metadata = rbody.get('Metadata', {})
46 for m, mbody in iter(new_metadata.items()):
47 if m in end_template['Resources'][role].get('Metadata', {}):
48 if m == 'OpenStack::ImageBuilder::Elements':
49 end_template['Resources'][role]['Metadata'][m].extend(mbody)
51 if mbody != end_template['Resources'][role]['Metadata'][m]:
52 errors.append('Role %s metadata key %s conflicts.' %
55 end_template['Resources'][role]['Metadata'][m] = mbody
57 if 'Resources' not in end_template:
58 end_template['Resources'] = {}
59 end_template['Resources'][role] = rbody
60 ikey = '%sImage' % (role)
61 end_template['Resources'][role]['Properties']['ImageId'] = {'Ref': ikey}
62 end_template['Parameters'][ikey] = {'Type': 'String'}
64 if r in end_template.get('Resources', {}):
65 if rbody != end_template['Resources'][r]:
66 errors.append('Resource %s from %s conflicts' % (r,
69 if 'Resources' not in end_template:
70 end_template['Resources'] = {}
71 end_template['Resources'][r] = rbody
73 def fix_ref(item, old, new):
74 if isinstance(item, dict):
75 copy_item = dict(item)
76 for k, v in iter(copy_item.items()):
77 if k == 'Ref' and v == old:
80 if k == 'Fn::GetAtt' and isinstance(v, list) and v[0] == old:
86 elif isinstance(item, list):
87 copy_item = list(item)
91 for change in resource_changes:
92 fix_ref(end_template, change[0], change[1])
96 sys.stderr.write("ERROR: %s\n" % e)
97 end_template['Description'] = ','.join(end_template['Description'])
98 sys.stdout.write(yaml.safe_dump(end_template, default_flow_style=False))