Class: Redis::Lock::Script

Inherits:
Object
  • Object
show all
Defined in:
lib/robust-redis-lock/script.rb

Instance Method Summary collapse

Constructor Details

#initialize(script) ⇒ Script

Returns a new instance of Script.



2
3
4
5
 
# File 'lib/robust-redis-lock/script.rb', line 2

def initialize(script)
  @script = script
  @sha = Digest::SHA1.hexdigest(@script)
end

Instance Method Details

#eval(redis, options = {}) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
 
# File 'lib/robust-redis-lock/script.rb', line 7

def eval(redis, options={})
  redis.evalsha(@sha, options)
rescue ::Redis::CommandError => e
  if e.message =~ /^NOSCRIPT/
    redis.script(:load, @script)
    retry
  end
  if e.message =~ /^ERR unknown command/
    raise "You are using a version of Redis that does not support LUA scripting. Please use Redis 2.6.0 or greater"
  end
  raise e
end

#to_s ⇒ Object 



20
21
22
 
# File 'lib/robust-redis-lock/script.rb', line 20

def to_s
  @script
end