Add metadata to configure swift

[apex-tripleo-heat-templates.git] / merge.py

diff --git a/merge.py b/merge.py
index 64cb00a..fe42b8d 100644 (file)
--- a/merge.py
+++ b/merge.py
@@ -29,12 +29,71 @@ def translate_role(role):
         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', {})
@@ -61,9 +120,12 @@ for template_path in templates:
 
     new_resources = template.get('Resources', {})
     for r, rbody in sorted(new_resources.items()):
-        if rbody['Type'] == 'AWS::EC2::Instance':
-            # XXX Assuming ImageId is always a Ref
-            del end_template['Parameters'][rbody['Properties']['ImageId']['Ref']]
+        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:
@@ -84,15 +146,21 @@ for template_path in templates:
             if 'Resources' not in end_template:
                 end_template['Resources'] = {}
             end_template['Resources'][role] = rbody
-            ikey = '%sImage' % (role)
-            end_template['Resources'][role]['Properties']['ImageId'] = {'Ref': ikey}
-            end_template['Parameters'][ikey] = {'Type': 'String'}
+            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', {}):
@@ -132,7 +200,7 @@ def fix_ref(item, 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)