redis backup skeleton

backup.py

import redis
import json
import base64

def test_data(r, items=100):
    r.flushall()
    for i in range(1, items):
        r.set("KEY:{}".format(i), "Nice value to backup {}".format(i))

def dump(r, out):
    for key in r.scan_iter():
        record = {}
        record[key.decode('utf-8')] = {
	        'value': base64.b64encode(r.dump(key)).decode('utf-8'),
            'ttl': 0
	    }
        ttl = r.pttl(key)
        if ttl >= 0:
       	    record[key.decode('utf-8')]['ttl'] = ttl 
        out.write("{}\n".format(json.dumps(record)))

def restore(r, line):
    record = json.loads(line)
    for key, dumped in record.items():
        print(line)
        decoded = base64.b64decode(dumped['value'])
        r.restore(key, dumped['ttl'], decoded)
        print(r.get(key))

r = redis.StrictRedis(host='redis')

test_data(r)
with open('backup.dat', 'w+') as out:
    dump(r, out)

r.flushall()
with open('backup.dat', 'r') as backup:
    for line in backup:
        restore(r, line)

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