diff options
Diffstat (limited to 'tripleo_heat_merge')
| -rw-r--r-- | tripleo_heat_merge/merge.py | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tripleo_heat_merge/merge.py b/tripleo_heat_merge/merge.py index dd254ab4..0de27e24 100644 --- a/tripleo_heat_merge/merge.py +++ b/tripleo_heat_merge/merge.py @@ -4,6 +4,27 @@ import yaml import argparse +def apply_maps(template): + """Apply Merge::Map within template. + + Any dict {'Merge::Map': {'Foo': 'Bar', 'Baz': 'Quux'}} + will resolve to ['Bar', 'Quux'] - that is a dict with key + 'Merge::Map' is replaced entirely by that dict['Merge::Map'].values(). + """ + if isinstance(template, dict): + if 'Merge::Map' in template: + return sorted( + apply_maps(value) for value in template['Merge::Map'].values() + ) + else: + return dict((key, apply_maps(value)) + for key, value in template.items()) + elif isinstance(template, list): + return [apply_maps(item) for item in template] + else: + return template + + def apply_scaling(template, scaling, in_copies=None): """Apply a set of scaling operations to template. @@ -301,6 +322,7 @@ def merge(templates, master_role=None, slave_roles=None, end_template['Resources'][r] = rbody end_template = apply_scaling(end_template, scaling) + end_template = apply_maps(end_template) def fix_ref(item, old, new): if isinstance(item, dict): |