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# File 'lib/watcher_on_the_wall.rb', line 20
def watcher_on_the_wall(options = {}, &block)
configuration = {
unique_key: (0..60).map { ('a'..'z').to_a[rand(26)] }.join,
auto_expire_in_seconds: 300
}.merge(options)
key = configuration[:unique_key]
if configuration[:auto_expire_in_seconds] == false
expire_in = false
else
expire_in = configuration[:auto_expire_in_seconds].to_i
end
self.watch(key)
if self.exists(key) == true
raise Exceptions::AlreadyRunning
end
self.multi do
if expire_in != false
self.setex(key, expire_in, true)
end
end
begin
yield if block_given?
ensure
self.del(key)
end
end
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