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import os
from olpc.datastore import layoutmanager
from olpc.datastore import metadatareader
MAX_SIZE = 256
class MetadataStore(object):
def store(self, uid, metadata):
dir_path = layoutmanager.get_instance().get_entry_path(uid)
if not os.path.exists(dir_path):
os.makedirs(dir_path)
metadata_path = os.path.join(dir_path, 'metadata')
if not os.path.exists(metadata_path):
os.makedirs(metadata_path)
metadata['uid'] = uid
for key, value in metadata.items():
f = open(os.path.join(metadata_path, key), 'w+')
try:
f.write(str(value))
finally:
f.close()
def retrieve(self, uid, properties=None):
dir_path = layoutmanager.get_instance().get_entry_path(uid)
return metadatareader.retrieve(dir_path, properties)
def delete(self, uid):
dir_path = layoutmanager.get_instance().get_entry_path(uid)
metadata_path = os.path.join(dir_path, 'metadata')
for key in os.listdir(metadata_path):
os.remove(os.path.join(metadata_path, key))
os.rmdir(metadata_path)
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