Module: Bearcat::RedisConnection

Defined in:
lib/bearcat/redis_connection.rb

Constant Summary collapse

KNOWN_REDIS_URL_ENVS = 
%w[REDIS_URL REDISTOGO_URL REDISCLOUD_URL].freeze

Class Method Summary collapse

Class Method Details

.configured?(prefix, explicit: false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bearcat/redis_connection.rb', line 14

def configured?(prefix, explicit: false)
  determine_redis_provider(prefix: prefix, explicit: true)
end

.create(options = {}) ⇒ Object 



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# File 'lib/bearcat/redis_connection.rb', line 18

def create(options = {})
  symbolized_options = options.transform_keys(&:to_sym)

  if !symbolized_options[:url] && (u = determine_redis_provider(prefix: options[:env_prefix]))
    symbolized_options[:url] = u
  end

  size = if symbolized_options[:size]
    symbolized_options[:size]
  elsif symbolized_options[:env_prefix] && (v = ENV["#{symbolized_options[:env_prefix]}_REDIS_POOL_SIZE"])
    Integer(v)
  elsif ENV["RAILS_MAX_THREADS"]
    Integer(ENV["RAILS_MAX_THREADS"])
  else
    5
  end

  pool_timeout = symbolized_options[:pool_timeout] || 1

  ConnectionPool.new(timeout: pool_timeout, size: size) do
    namespace = symbolized_options[:namespace]
    client = Redis.new client_opts(symbolized_options)

    if namespace
      begin
        require "redis/namespace"
        Redis::Namespace.new(namespace, redis: client)
      rescue LoadError
        Rails.logger.error("Your Redis configuration uses the namespace '#{namespace}' but the redis-namespace gem is not included in the Gemfile." \
                             "Add the gem to your Gemfile to continue using a namespace. Otherwise, remove the namespace parameter.")
        exit(-127)
      end
    else
      client
    end
  end
end