fcbead3871
This can be very useful for merging of Metadata to be used by optional services (e. g. to add services like tuskar to undercloud on demand). Change-Id: Ifc4016d6e994064c0772c12e668e98bf055fada9
209 lines
8.6 KiB
Python
209 lines
8.6 KiB
Python
import sys
|
|
import yaml
|
|
import argparse
|
|
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('templates', nargs='+')
|
|
parser.add_argument('--master-role', nargs='?',
|
|
help='Translate slave_roles to this')
|
|
parser.add_argument('--slave-roles', nargs='*',
|
|
help='Translate all of these to master_role')
|
|
|
|
args = parser.parse_args()
|
|
|
|
templates = args.templates
|
|
|
|
def _translate_role(role):
|
|
global args
|
|
if not args.master_role:
|
|
return role
|
|
if role == args.master_role:
|
|
return role
|
|
if role not in args.slave_roles:
|
|
return role
|
|
return args.master_role
|
|
|
|
def translate_role(role):
|
|
r = _translate_role(role)
|
|
if not isinstance(r, basestring):
|
|
raise Exception('%s -> %r' % (role, r))
|
|
return r
|
|
|
|
def resolve_params(item, param, value):
|
|
if item == {'Ref': param}:
|
|
return value
|
|
if isinstance(item, dict):
|
|
copy_item = dict(item)
|
|
for k, v in iter(copy_item.items()):
|
|
item[k] = resolve_params(v, param, value)
|
|
elif isinstance(item, list):
|
|
copy_item = list(item)
|
|
new_item = []
|
|
for v in copy_item:
|
|
new_item.append(resolve_params(v, param, value))
|
|
item = new_item
|
|
return item
|
|
|
|
MERGABLE_TYPES = {'OS::Nova::Server':
|
|
{'image': 'image'},
|
|
'AWS::EC2::Instance':
|
|
{'image': 'ImageId'},
|
|
'AWS::AutoScaling::LaunchConfiguration':
|
|
{},
|
|
}
|
|
|
|
|
|
def resolve_includes(template, params=None):
|
|
new_template = {}
|
|
if params is None:
|
|
params = {}
|
|
for key, value in iter(template.items()):
|
|
if key == '__include__':
|
|
new_params = dict(params) # do not propagate up the stack
|
|
if not isinstance(value, dict):
|
|
raise ValueError('__include__ must be a mapping')
|
|
if 'path' not in value:
|
|
raise ValueError('__include__ must have path')
|
|
if 'params' in value:
|
|
if not isinstance(value['params'], dict):
|
|
raise ValueError('__include__ params must be a mapping')
|
|
new_params.update(value['params'])
|
|
with open(value['path']) as include_file:
|
|
sub_template = yaml.safe_load(include_file.read())
|
|
if 'subkey' in value:
|
|
if ((not isinstance(value['subkey'], int)
|
|
and not isinstance(sub_template, dict))):
|
|
raise RuntimeError('subkey requires mapping root or'
|
|
' integer for list root')
|
|
sub_template = sub_template[value['subkey']]
|
|
for k, v in iter(new_params.items()):
|
|
sub_template = resolve_params(sub_template, k, v)
|
|
new_template.update(resolve_includes(sub_template))
|
|
else:
|
|
if isinstance(value, dict):
|
|
new_template[key] = resolve_includes(value)
|
|
else:
|
|
new_template[key] = value
|
|
return new_template
|
|
|
|
errors = []
|
|
end_template={'HeatTemplateFormatVersion': '2012-12-12',
|
|
'Description': []}
|
|
resource_changes=[]
|
|
for template_path in templates:
|
|
template = yaml.safe_load(open(template_path))
|
|
# Resolve __include__ tags
|
|
template = resolve_includes(template)
|
|
end_template['Description'].append(template.get('Description',
|
|
template_path))
|
|
new_parameters = template.get('Parameters', {})
|
|
for p, pbody in sorted(new_parameters.items()):
|
|
if p in end_template.get('Parameters', {}):
|
|
if pbody != end_template['Parameters'][p]:
|
|
errors.append('Parameter %s from %s conflicts.' % (p,
|
|
template_path))
|
|
continue
|
|
if 'Parameters' not in end_template:
|
|
end_template['Parameters'] = {}
|
|
end_template['Parameters'][p] = pbody
|
|
|
|
new_outputs = template.get('Outputs', {})
|
|
for o, obody in sorted(new_outputs.items()):
|
|
if o in end_template.get('Outputs', {}):
|
|
if pbody != end_template['Outputs'][p]:
|
|
errors.append('Output %s from %s conflicts.' % (o,
|
|
template_path))
|
|
continue
|
|
if 'Outputs' not in end_template:
|
|
end_template['Outputs'] = {}
|
|
end_template['Outputs'][o] = obody
|
|
|
|
new_resources = template.get('Resources', {})
|
|
for r, rbody in sorted(new_resources.items()):
|
|
if rbody['Type'] in MERGABLE_TYPES:
|
|
if 'image' in MERGABLE_TYPES[rbody['Type']]:
|
|
image_key = MERGABLE_TYPES[rbody['Type']]['image']
|
|
# XXX Assuming ImageId is always a Ref
|
|
ikey_val = end_template['Parameters'][rbody['Properties'][image_key]['Ref']]
|
|
del end_template['Parameters'][rbody['Properties'][image_key]['Ref']]
|
|
role = rbody.get('Metadata', {}).get('OpenStack::Role', r)
|
|
role = translate_role(role)
|
|
if role != r:
|
|
resource_changes.append((r, role))
|
|
if role in end_template.get('Resources', {}):
|
|
new_metadata = rbody.get('Metadata', {})
|
|
for m, mbody in iter(new_metadata.items()):
|
|
if m in end_template['Resources'][role].get('Metadata', {}):
|
|
if m == 'OpenStack::ImageBuilder::Elements':
|
|
end_template['Resources'][role]['Metadata'][m].extend(mbody)
|
|
continue
|
|
if mbody != end_template['Resources'][role]['Metadata'][m]:
|
|
errors.append('Role %s metadata key %s conflicts.' %
|
|
(role, m))
|
|
continue
|
|
end_template['Resources'][role]['Metadata'][m] = mbody
|
|
continue
|
|
if 'Resources' not in end_template:
|
|
end_template['Resources'] = {}
|
|
end_template['Resources'][role] = rbody
|
|
if 'image' in MERGABLE_TYPES[rbody['Type']]:
|
|
ikey = '%sImage' % (role)
|
|
end_template['Resources'][role]['Properties'][image_key] = {'Ref': ikey}
|
|
end_template['Parameters'][ikey] = ikey_val
|
|
elif rbody['Type'] == 'FileInclude':
|
|
with open(rbody['Path']) as rfile:
|
|
include_content = yaml.safe_load(rfile.read())
|
|
subkeys = rbody.get('SubKey','').split('.')
|
|
while len(subkeys) and subkeys[0]:
|
|
include_content = include_content[subkeys.pop(0)]
|
|
for replace_param, replace_value in iter(rbody.get('Parameters',
|
|
{}).items()):
|
|
include_content = resolve_params(include_content,
|
|
replace_param,
|
|
replace_value)
|
|
end_template['Resources'][r] = include_content
|
|
else:
|
|
if r in end_template.get('Resources', {}):
|
|
if rbody != end_template['Resources'][r]:
|
|
errors.append('Resource %s from %s conflicts' % (r,
|
|
template_path))
|
|
continue
|
|
if 'Resources' not in end_template:
|
|
end_template['Resources'] = {}
|
|
end_template['Resources'][r] = rbody
|
|
|
|
def fix_ref(item, old, new):
|
|
if isinstance(item, dict):
|
|
copy_item = dict(item)
|
|
for k, v in sorted(copy_item.items()):
|
|
if k == 'Ref' and v == old:
|
|
item[k] = new
|
|
continue
|
|
if k == 'DependsOn' and v == old:
|
|
item[k] = new
|
|
continue
|
|
if k == 'Fn::GetAtt' and isinstance(v, list) and v[0] == old:
|
|
new_list = list(v)
|
|
new_list[0] = new
|
|
item[k] = new_list
|
|
continue
|
|
if k == 'AllowedResources' and isinstance(v, list) and old in v:
|
|
while old in v:
|
|
pos = v.index(old)
|
|
v[pos] = new
|
|
continue
|
|
fix_ref(v, old, new)
|
|
elif isinstance(item, list):
|
|
copy_item = list(item)
|
|
for v in item:
|
|
fix_ref(v, old, new)
|
|
|
|
for change in resource_changes:
|
|
fix_ref(end_template, change[0], change[1])
|
|
|
|
if errors:
|
|
for e in errors:
|
|
sys.stderr.write("ERROR: %s\n" % e)
|
|
end_template['Description'] = ','.join(end_template['Description'])
|
|
sys.stdout.write(yaml.safe_dump(end_template, default_flow_style=False))
|