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Merge pull request #3 from AppsFuel/master
Review for Reding
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Original file line number | Diff line number | Diff line change |
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@@ -4,3 +4,4 @@ Reding.egg-info/ | |
.cache/ | ||
.coverage | ||
VENV/ | ||
.idea/ |
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@@ -0,0 +1,173 @@ | ||
from datetime import datetime | ||
import redis | ||
from reding.settings import KEY_CONFIG, REDIS_CONFIG | ||
rclient = redis.StrictRedis(**REDIS_CONFIG) | ||
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def get_key_name(template, **kw): | ||
d = KEY_CONFIG.copy() | ||
d.update(dict((key, value) for (key, value) in kw.iteritems() if value)) | ||
return template.format(**d) | ||
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def zrange(start, end, reverse): | ||
if not reverse: | ||
return rclient.zrangebyscore, start, end | ||
else: | ||
return rclient.zrevrangebyscore, end, start | ||
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class ObjectSubjectsManager(object): | ||
def __init__(self, **kwargs): | ||
self.template = get_key_name('{prefix}:{object}:{{object_id}}:{subjects}', **kwargs) | ||
self.template_review = get_key_name('{prefix}:{object}:{{object_id}}:review:{subjects}', **kwargs) | ||
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def count(self, object_id, min_vote='-inf', max_vote='+inf'): | ||
return rclient.zcount( | ||
name=self.template.format(object_id=object_id), | ||
min=min_vote, | ||
max=max_vote, | ||
) | ||
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def scoredrange(self, object_id, offset, size, min_vote='-inf', max_vote='+inf', reverse=False): | ||
func, min_vote, max_vote = zrange(min_vote, max_vote, reverse) | ||
return func( | ||
name=self.template.format(object_id=object_id), | ||
min=min_vote, | ||
max=max_vote, | ||
start=offset, | ||
num=size, | ||
withscores=True, | ||
) | ||
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def score(self, object_id, user_id): | ||
return rclient.zscore( | ||
name=self.template.format(object_id=object_id), | ||
value=user_id, | ||
) | ||
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def review(self, object_id, user_id): | ||
return rclient.hget( | ||
name=self.template_review.format(object_id=object_id), | ||
key=user_id, | ||
) | ||
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def reviews(self, object_id, *user_ids): | ||
return dict(zip(user_ids, rclient.hmget( | ||
self.template_review.format(object_id=object_id), user_ids | ||
))) | ||
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def create(self, object_id, user_id, vote, review): | ||
rclient.zadd( | ||
self.template.format(object_id=object_id), | ||
vote, | ||
user_id, | ||
) | ||
name = self.template_review.format(object_id=object_id) | ||
if review: | ||
rclient.hset(name, user_id, review) | ||
else: | ||
rclient.hdel(name, user_id) | ||
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def remove(self, object_id, user_id): | ||
rclient.zrem( | ||
self.template.format(object_id=object_id), | ||
user_id, | ||
) | ||
rclient.hdel( | ||
self.template_review.format(object_id=object_id), | ||
user_id, | ||
) | ||
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class SubjectObjectsManager(object): | ||
def __init__(self, **kwargs): | ||
self.template = get_key_name('{prefix}:{subject}:{{user_id}}:{objects}', **kwargs) | ||
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def scoredrange(self, user_id, offset, size, min_vote='-inf', max_vote='+inf', reverse=False): | ||
func, min_vote, max_vote = zrange(min_vote, max_vote, reverse) | ||
scored = func( | ||
name=self.template.format(user_id=user_id), | ||
min=min_vote, | ||
max=max_vote, | ||
start=offset, | ||
num=size, | ||
withscores=True, | ||
) | ||
return [(k, datetime.fromtimestamp(v)) for k, v in scored] | ||
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def score(self, user_id, object_id): | ||
try: | ||
return datetime.fromtimestamp(rclient.zscore( | ||
name=self.template.format(user_id=user_id), | ||
value=object_id, | ||
)) | ||
except TypeError: | ||
return 0 | ||
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def create(self, user_id, object_id, timestamp): | ||
rclient.zadd( | ||
self.template.format(user_id=user_id), | ||
timestamp, | ||
object_id, | ||
) | ||
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def remove(self, user_id, object_id): | ||
rclient.zrem( | ||
self.template.format(user_id=user_id), | ||
object_id, | ||
) | ||
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class ObjectsManager(object): | ||
def __init__(self, **kwargs): | ||
self.template = get_key_name('{prefix}:{objects}', **kwargs) | ||
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def scoredrange(self, offset, size, min_vote='-inf', max_vote='+inf', reverse=False): | ||
func, min_vote, max_vote = zrange(min_vote, max_vote, reverse) | ||
return func( | ||
name=self.template, | ||
min=min_vote, | ||
max=max_vote, | ||
start=offset, | ||
num=size, | ||
withscores=True, | ||
) | ||
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def score(self, object_id): | ||
return rclient.zscore( | ||
name=self.template, | ||
value=object_id, | ||
) | ||
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def incrby(self, object_id, delta): | ||
rclient.zincrby( | ||
name=self.template, | ||
value=object_id, | ||
amount=delta, | ||
) | ||
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def remove(self, object_id): | ||
rclient.zrem( | ||
self.template, | ||
object_id, | ||
) | ||
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def filtered(self, objects, now, reverse): | ||
if not objects: | ||
return [] | ||
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tmp_key = '{0}:tmp:{1}'.format(self.template, now) | ||
tmp_dest_key = '{0}:tmp_dest:{1}'.format(self.template, now) | ||
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rclient.sadd(tmp_key, *objects) | ||
rclient.zinterstore(tmp_dest_key, (self.template, tmp_key), aggregate='SUM') | ||
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if reverse: | ||
zsorted = rclient.zrevrangebyscore(tmp_dest_key, '+inf', '-inf') | ||
else: | ||
zsorted = rclient.zrangebyscore(tmp_dest_key, '-inf', '+inf') | ||
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rclient.delete(tmp_key, tmp_dest_key) | ||
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return zsorted + list(set(objects).difference(set(zsorted))) |
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