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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
# frozen_string_literal: true
# Interface to the Redis-backed cache store for keys that use a Redis set
module Gitlab
class RepositorySetCache < Gitlab::SetCache
attr_reader :repository, :namespace, :expires_in
def initialize(repository, extra_namespace: nil, expires_in: 2.weeks)
@repository = repository
@namespace = "#{repository.full_path}"
@namespace += ":#{repository.project.id}" if repository.project
@namespace = "#{@namespace}:#{extra_namespace}" if extra_namespace
@expires_in = expires_in
end
def cache_key(type)
super("#{type}:#{namespace}")
end
def write(key, value)
full_key = cache_key(key)
with do |redis|
redis.multi do |multi|
multi.unlink(full_key)
# Splitting into groups of 1000 prevents us from creating a too-long
# Redis command
value.each_slice(1000) { |subset| multi.sadd(full_key, subset) }
multi.expire(full_key, expires_in)
end
end
value
end
def fetch(key, &block)
full_key = cache_key(key)
smembers, exists = with do |redis|
redis.multi do |multi|
multi.smembers(full_key)
multi.exists?(full_key) # rubocop:disable CodeReuse/ActiveRecord
end
end
return smembers if exists
write(key, yield)
end
# Searches the cache set using SSCAN with the MATCH option. The MATCH
# parameter is the pattern argument.
# See https://redis.io/commands/scan#the-match-option for more information.
# Returns an Enumerator that enumerates all SSCAN hits.
def search(key, pattern, &block)
full_key = cache_key(key)
with do |redis|
exists = redis.exists?(full_key) # rubocop:disable CodeReuse/ActiveRecord
write(key, yield) unless exists
redis.sscan_each(full_key, match: pattern)
end
end
private
def cache
Gitlab::Redis::RepositoryCache
end
def with(&blk)
cache.with(&blk) # rubocop:disable CodeReuse/ActiveRecord
end
end
end
|
