99 lines
4.2 KiB
Python
99 lines
4.2 KiB
Python
import sys
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import yaml
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templates = list(sys.argv[1:])
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errors = []
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end_template={'HeatTemplateFormatVersion': '2012-12-12',
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'Description': []}
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resource_changes=[]
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for template_path in templates:
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template = yaml.safe_load(open(template_path))
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end_template['Description'].append(template.get('Description',
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template_path))
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new_parameters = template.get('Parameters', {})
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for p, pbody in iter(new_parameters.items()):
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if p in end_template.get('Parameters', {}):
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if pbody != end_template['Parameters'][p]:
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errors.append('Parameter %s from %s conflicts.' % (p,
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template_path))
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continue
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if 'Parameters' not in end_template:
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end_template['Parameters'] = {}
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end_template['Parameters'][p] = pbody
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new_outputs = template.get('Outputs', {})
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for o, obody in iter(new_outputs.items()):
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if o in end_template.get('Outputs', {}):
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if pbody != end_template['Outputs'][p]:
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errors.append('Output %s from %s conflicts.' % (o,
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template_path))
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continue
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if 'Outputs' not in end_template:
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end_template['Outputs'] = {}
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end_template['Outputs'][o] = obody
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new_resources = template.get('Resources', {})
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for r, rbody in iter(new_resources.items()):
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if rbody['Type'] == 'AWS::EC2::Instance':
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# XXX Assuming ImageId is always a Ref
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del end_template['Parameters'][rbody['Properties']['ImageId']['Ref']]
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role = rbody.get('Metadata', {}).get('OpenStack::Role', r)
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if role != r:
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resource_changes.append((r, role))
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if role in end_template.get('Resources', {}):
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new_metadata = rbody.get('Metadata', {})
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for m, mbody in iter(new_metadata.items()):
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if m in end_template['Resources'][role].get('Metadata', {}):
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if m == 'OpenStack::ImageBuilder::Elements':
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end_template['Resources'][role]['Metadata'][m].extend(mbody)
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continue
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if mbody != end_template['Resources'][role]['Metadata'][m]:
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errors.append('Role %s metadata key %s conflicts.' %
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(role, m))
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continue
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end_template['Resources'][role]['Metadata'][m] = mbody
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continue
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if 'Resources' not in end_template:
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end_template['Resources'] = {}
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end_template['Resources'][role] = rbody
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ikey = '%sImage' % (role)
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end_template['Resources'][role]['Properties']['ImageId'] = {'Ref': ikey}
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end_template['Parameters'][ikey] = {'Type': 'String'}
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else:
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if r in end_template.get('Resources', {}):
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if rbody != end_template['Resources'][r]:
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errors.append('Resource %s from %s conflicts' % (r,
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template_path))
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continue
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if 'Resources' not in end_template:
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end_template['Resources'] = {}
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end_template['Resources'][r] = rbody
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def fix_ref(item, old, new):
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if isinstance(item, dict):
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copy_item = dict(item)
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for k, v in iter(copy_item.items()):
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if k == 'Ref' and v == old:
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item[k] = new
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continue
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if k == 'Fn::GetAtt' and isinstance(v, list) and v[0] == old:
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new_list = list(v)
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new_list[0] = new
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item[k] = new_list
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continue
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fix_ref(v, old, new)
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elif isinstance(item, list):
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copy_item = list(item)
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for v in item:
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fix_ref(v, old, new)
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for change in resource_changes:
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fix_ref(end_template, change[0], change[1])
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if errors:
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for e in errors:
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sys.stderr.write("ERROR: %s\n" % e)
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end_template['Description'] = ','.join(end_template['Description'])
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sys.stdout.write(yaml.safe_dump(end_template, default_flow_style=False))
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