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"""Package defining Redis file manager |
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.. Authors: |
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Philippe Dessauw |
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[email protected] |
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.. Sponsor: |
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Alden Dima |
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[email protected] |
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Information Systems Group |
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Software and Systems Division |
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Information Technology Laboratory |
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National Institute of Standards and Technology |
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http://www.nist.gov/itl/ssd/is |
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""" |
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import base64 |
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from os import remove |
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import redis |
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class FileManager(object): |
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"""Redis file manager |
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""" |
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def __init__(self, host="127.0.0.1", port=6379, db=0): |
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self.server = redis.StrictRedis(host, port, db) |
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self.hashmap_name = "fman" |
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def retrieve_file(self, filename): |
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"""Retrieve from redis hashmap |
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Args |
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filename (str): Filename to retrieve |
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""" |
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b64_hash = self.server.hget(self.hashmap_name, filename) |
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data = base64.b64decode(b64_hash) |
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with open(filename, 'wb') as zip_file: |
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zip_file.write(data) |
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def store_file(self, filename): |
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"""Store file to redis hashmap |
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Args |
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filename (str): Filename to store |
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""" |
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with open(filename, 'rb') as zip_file: |
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b64_hash = base64.b64encode(zip_file.read()) |
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self.server.hset(self.hashmap_name, filename, b64_hash) |
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remove(filename) |
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def delete_file(self, filename): |
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"""Delete file from redis hashmap |
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Args |
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filename (str): Filename to delete |
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""" |
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self.server.hdel(self.hashmap_name, filename) |
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