discourse/lib/redis_snapshot.rb

42 lines
748 B
Ruby

# frozen_string_literal: true
class RedisSnapshot
def self.begin_faux_transaction(redis = Discourse.redis)
@stack ||= []
@stack.push(RedisSnapshot.load(redis))
end
def self.end_faux_transaction(redis = Discourse.redis)
@stack.pop.restore(redis)
end
def self.load(redis = Discourse.redis)
keys = redis.keys
values =
redis.pipelined do
keys.each do |key|
redis.dump(key)
end
end
new(keys.zip(values).delete_if { |k, v| v.nil? })
end
def initialize(dump)
@dump = dump
end
def restore(redis = Discourse.redis)
redis.pipelined do
redis.flushdb
@dump.each do |key, value|
redis.restore(key, 0, value)
end
end
nil
end
end