1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
import os
from carquinyol import layoutmanager
from carquinyol import metadatareader
MAX_SIZE = 256
class MetadataStore(object):
def store(self, tree_id, version_id, metadata):
metadata_path = layoutmanager.get_instance().get_metadata_path(tree_id, version_id)
if not os.path.exists(metadata_path):
os.makedirs(metadata_path)
else:
for key in os.listdir(metadata_path):
os.remove(os.path.join(metadata_path, key))
metadata['tree_id'] = tree_id
metadata['version_id'] = version_id
for key, value in metadata.items():
# Hack to support activities that still pass properties named as for
# example title:text.
if ':' in key:
key = key.split(':', 1)[0]
f = open(os.path.join(metadata_path, key), 'w')
try:
if isinstance(value, unicode):
value = value.encode('utf-8')
elif not isinstance(value, basestring):
value = str(value)
f.write(value)
finally:
f.close()
def retrieve(self, tree_id, version_id, properties=None):
metadata_path = layoutmanager.get_instance().get_metadata_path(tree_id, version_id)
return metadatareader.retrieve(metadata_path, properties)
def delete(self, tree_id, version_id):
metadata_path = layoutmanager.get_instance().get_metadata_path(tree_id, version_id)
for key in os.listdir(metadata_path):
os.remove(os.path.join(metadata_path, key))
os.rmdir(metadata_path)
def get_property(self, tree_id, version_id, key):
metadata_path = layoutmanager.get_instance().get_metadata_path(tree_id, version_id)
property_path = os.path.join(metadata_path, key)
if os.path.exists(property_path):
return open(property_path, 'r').read()
else:
return None
def set_property(self, tree_id, version_id, key, value):
metadata_path = layoutmanager.get_instance().get_metadata_path(tree_id, version_id)
property_path = os.path.join(metadata_path, key)
open(property_path, 'w').write(value)
|
