|
1
|
|
|
"""Package defining Redis file manager |
|
2
|
|
|
|
|
3
|
|
|
.. Authors: |
|
4
|
|
|
Philippe Dessauw |
|
5
|
|
|
[email protected] |
|
6
|
|
|
|
|
7
|
|
|
.. Sponsor: |
|
8
|
|
|
Alden Dima |
|
9
|
|
|
[email protected] |
|
10
|
|
|
Information Systems Group |
|
11
|
|
|
Software and Systems Division |
|
12
|
|
|
Information Technology Laboratory |
|
13
|
|
|
National Institute of Standards and Technology |
|
14
|
|
|
http://www.nist.gov/itl/ssd/is |
|
15
|
|
|
""" |
|
16
|
|
|
import base64 |
|
17
|
|
|
from os import remove |
|
18
|
|
|
import redis |
|
19
|
|
|
|
|
20
|
|
|
|
|
21
|
|
|
class FileManager(object): |
|
22
|
|
|
"""Redis file manager |
|
23
|
|
|
""" |
|
24
|
|
|
|
|
25
|
|
|
# def __init__(self, host="127.0.0.1", port=6379, db=0): |
|
26
|
|
|
# self.server = redis.StrictRedis(host, port, db) |
|
27
|
|
|
# self.hashmap_name = "fman" |
|
28
|
|
|
def __init__(self, app_config): |
|
29
|
|
|
self.hashmap = {} # Stores fileid -> filepath |
|
30
|
|
|
self.config = app_config |
|
31
|
|
|
|
|
32
|
|
|
# def retrieve_file(self, filename): |
|
33
|
|
|
# """Retrieve from redis hashmap |
|
34
|
|
|
# |
|
35
|
|
|
# Args |
|
36
|
|
|
# filename (str): Filename to retrieve |
|
37
|
|
|
# """ |
|
38
|
|
|
# b64_hash = self.server.hget(self.hashmap_name, filename) |
|
39
|
|
|
# data = base64.b64decode(b64_hash) |
|
40
|
|
|
# |
|
41
|
|
|
# with open(filename, 'wb') as zip_file: |
|
42
|
|
|
# zip_file.write(data) |
|
43
|
|
|
# |
|
44
|
|
|
# def store_file(self, filename): |
|
45
|
|
|
# """Store file to redis hashmap |
|
46
|
|
|
# |
|
47
|
|
|
# Args |
|
48
|
|
|
# filename (str): Filename to store |
|
49
|
|
|
# """ |
|
50
|
|
|
# with open(filename, 'rb') as zip_file: |
|
51
|
|
|
# b64_hash = base64.b64encode(zip_file.read()) |
|
52
|
|
|
# |
|
53
|
|
|
# self.server.hset(self.hashmap_name, filename, b64_hash) |
|
54
|
|
|
# remove(filename) |
|
55
|
|
|
|
|
56
|
|
|
def delete_file(self, filename): |
|
57
|
|
|
"""Delete file from redis hashmap |
|
58
|
|
|
|
|
59
|
|
|
Args |
|
60
|
|
|
filename (str): Filename to delete |
|
61
|
|
|
""" |
|
62
|
|
|
# self.server.hdel(self.hashmap_name, filename) |
|
63
|
|
|
if filename not in self.hashmap: |
|
64
|
|
|
raise KeyError("FileManager: filename is not present in hashmap") |
|
65
|
|
|
|
|
66
|
|
|
del self.hashmap[filename] |
|
67
|
|
|
|
usnistgov /
ocr-pipeline
