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# This file should not have any direct dependency on Rails environment
# please require all dependencies below:
require 'active_support/core_ext/hash/keys'
module Gitlab
class Redis
CACHE_NAMESPACE = 'cache:gitlab'
SESSION_NAMESPACE = 'session:gitlab'
SIDEKIQ_NAMESPACE = 'resque:gitlab'
MAILROOM_NAMESPACE = 'mail_room:gitlab'
DEFAULT_REDIS_URL = 'redis://localhost:6379'
# To be thread-safe we must be careful when writing the class instance
# variables @url and @pool. Because @pool depends on @url we need two
# mutexes to prevent deadlock.
PARAMS_MUTEX = Mutex.new
POOL_MUTEX = Mutex.new
private_constant :PARAMS_MUTEX, :POOL_MUTEX
class << self
def params
@params || PARAMS_MUTEX.synchronize { @params = new.params }
end
# @deprecated Use .params instead to get sentinel support
def url
new.url
end
def with
if @pool.nil?
POOL_MUTEX.synchronize do
@pool = ConnectionPool.new { ::Redis.new(params) }
end
end
@pool.with { |redis| yield redis }
end
def reset_params!
@params = nil
end
end
def initialize(rails_env = nil)
@rails_env = rails_env || ::Rails.env
end
def params
redis_store_options
end
def url
raw_config_hash[:url]
end
private
def redis_store_options
config = raw_config_hash
redis_url = config.delete(:url)
redis_uri = URI.parse(redis_url)
if redis_uri.scheme == 'unix'
# Redis::Store does not handle Unix sockets well, so let's do it for them
config[:path] = redis_uri.path
config
else
redis_hash = ::Redis::Store::Factory.extract_host_options_from_uri(redis_url)
# order is important here, sentinels must be after the connection keys.
# {url: ..., port: ..., sentinels: [...]}
redis_hash.merge(config)
end
end
def raw_config_hash
config_data = fetch_config
if config_data
config_data.is_a?(String) ? { url: config_data } : config_data.deep_symbolize_keys
else
{ url: DEFAULT_REDIS_URL }
end
end
def fetch_config
file = config_file
File.exist?(file) ? YAML.load_file(file)[@rails_env] : false
end
def config_file
File.expand_path('../../../config/resque.yml', __FILE__)
end
end
end
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