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# Implement ConfigMapHash and SecretHash equivalents
# Based on https://github.com/kubernetes/kubernetes/pull/49961
import json
import hashlib
try:
import string
maketrans = string.maketrans
except AttributeError:
maketrans = str.maketrans
try:
from collections import OrderedDict
except ImportError:
from orderreddict import OrderedDict
def sorted_dict(unsorted_dict):
result = OrderedDict()
for (k, v) in sorted(unsorted_dict.items()):
if isinstance(v, dict):
v = sorted_dict(v)
result[k] = v
return result
def generate_hash(resource):
# Get name from metadata
resource['name'] = resource.get('metadata', {}).get('name', '')
if resource['kind'] == 'ConfigMap':
marshalled = marshal(sorted_dict(resource), ['data', 'kind', 'name'])
del resource['name']
return encode(marshalled)
if resource['kind'] == 'Secret':
marshalled = marshal(sorted_dict(resource), ['data', 'kind', 'name', 'type'])
del resource['name']
return encode(marshalled)
raise NotImplementedError
def marshal(data, keys):
ordered = OrderedDict()
for key in keys:
ordered[key] = data.get(key, "")
return json.dumps(ordered, separators=(',', ':')).encode('utf-8')
def encode(resource):
return hashlib.sha256(resource).hexdigest()[:10].translate(maketrans("013ae", "ghkmt"))
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