diff options
Diffstat (limited to 'meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py')
-rwxr-xr-x | meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py new file mode 100755 index 000000000..5e6c4b5e6 --- /dev/null +++ b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/merge_yamls.py @@ -0,0 +1,59 @@ +#!/usr/bin/env python +"""Copied from phosphor-settings-manager +Loads a "target" YAML file and overwrites its values with values from +"override" YAML files. + +Override files are processed in the order given. + +Usage: + merge_settings.py <target yaml> [override yamls] +""" +import sys +import yaml +import copy + +def dict_merge(target, source): + """Deep merge for dicts. + + Works like dict.update() that recursively updates any dict values present in + both parameters. + + Args: + target (dict): Values to be overwritten by corresponding values from + `source`. + source (dict): Overriding values. Not changed by call. + + Returns: + `target` with values overwritten from those in `source` at any and all + levels of nested dicts. + """ + if not isinstance(source, dict): + return source + for k, v in source.iteritems(): + if k in target and isinstance(target[k], dict): + dict_merge(target[k], v) + else: + target[k] = copy.deepcopy(v) + return target + +if len(sys.argv) < 2: + sys.exit('Argument required: target yaml') + +if len(sys.argv) == 2: + # No overrides to handle + sys.exit(0) + +target_filename = sys.argv[1] +with open(target_filename) as target_file: + data = yaml.safe_load(target_file) + print('Loaded target YAML file ' + target_filename) + +for override_filename in sys.argv[2:]: + with open(override_filename) as override_file: + override = yaml.safe_load(override_file) + dict_merge(data, override) + print('Merged override YAML file ' + override_filename) + +with open(target_filename, 'w') as target_file: + yaml.dump(data, target_file, default_flow_style=False) + print('Wrote merged target YAML file ' + target_filename) |