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def kv_diff(A, B, whitelist=[]): | |
''' | |
Function can be used on elasticsearch mappings to identify variations. | |
Returns a diff. | |
Eg: | |
template = requests.get(es_url + '/_template/mytemplate', auth=(es_user,es_pass)).json()['projects']['mappings'] | |
mapping = requests.get(es_url + '/foo/_mapping' % project_id, auth=(es_user,es_pass)).json()['foo']['mappings'] | |
kv_diff(template, mapping) | |
''' | |
try: | |
retval = {} | |
A_keys = A.keys() | |
B_keys = B.keys() | |
A_set = set(A_keys) | |
B_set = set(B_keys) | |
diff = A_set.symmetric_difference(B_set) | |
intersection = A_set.intersection(B_set) | |
intersection_copy = intersection.copy() | |
for item in set(whitelist): | |
if item in diff: | |
diff.remove(item) | |
if item in intersection: | |
intersection_copy.remove(item) | |
intersection = intersection_copy | |
if diff: | |
for item in diff: | |
if item in A_keys: | |
retval['A'] = retval.get('A', {}) | |
retval['A'][item] = A[item] | |
if item in B_keys: | |
retval['B'] = retval.get('B', {}) | |
retval['B'][item] = B[item] | |
for key in intersection: | |
kvdiff = kv_diff(A[key], B[key], whitelist) | |
if kvdiff: | |
retval[key] = kvdiff | |
return retval | |
except AttributeError: | |
if A == B: | |
return {} | |
else: | |
return {'A': A, 'B': B} |
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feedback appreciated!