Class: Racecar::Config

Inherits:
KingKonf::Config
  • Object
show all
Defined in:
lib/racecar/config.rb

Constant Summary collapse

STATISTICS_DISABLED_VALUE = 
0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env: ENV) ⇒ Config

Returns a new instance of Config.



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# File 'lib/racecar/config.rb', line 184

def initialize(env: ENV)
  super(env: env)
  @error_handler = proc {}
  @subscriptions = []
  @logger = Logger.new(STDOUT)
end

Instance Attribute Details

#error_handler ⇒ Object (readonly)

The error handler must be set directly on the object.



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# File 'lib/racecar/config.rb', line 168

def error_handler
  @error_handler
end

#logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/racecar/config.rb', line 170

def logger
  @logger
end

#parallel_workers ⇒ Object

Returns the value of attribute parallel_workers.



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# File 'lib/racecar/config.rb', line 170

def parallel_workers
  @parallel_workers
end

#subscriptions ⇒ Object

Returns the value of attribute subscriptions.



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# File 'lib/racecar/config.rb', line 170

def subscriptions
  @subscriptions
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/racecar/config.rb', line 191

def inspect
  self.class.variables
    .map(&:name)
    .map {|key| [key, get(key).inspect].join(" = ") }
    .join("\n")
end

#load_consumer_class(consumer_class) ⇒ Object 



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# File 'lib/racecar/config.rb', line 212

def load_consumer_class(consumer_class)
  self.group_id = consumer_class.group_id || self.group_id

  self.group_id ||= [
    # Configurable and optional prefix:
    group_id_prefix,

    # MyFunnyConsumer => my-funny-consumer
    consumer_class.name.gsub(/[a-z][A-Z]/) { |str| "#{str[0]}-#{str[1]}" }.downcase,
  ].compact.join

  self.parallel_workers = consumer_class.parallel_workers
  self.subscriptions = consumer_class.subscriptions
  self.max_wait_time = consumer_class.max_wait_time || self.max_wait_time
  self.pidfile ||= "#{group_id}.pid"
end

#max_wait_time_ms ⇒ Object 



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# File 'lib/racecar/config.rb', line 180

def max_wait_time_ms
  max_wait_time * 1000
end

#on_error(&handler) ⇒ Object 



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# File 'lib/racecar/config.rb', line 229

def on_error(&handler)
  @error_handler = handler
end

#rdkafka_consumer ⇒ Object 



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# File 'lib/racecar/config.rb', line 233

def rdkafka_consumer
  consumer_config = consumer.map do |param|
    param.split("=", 2).map(&:strip)
  end.to_h
  consumer_config.merge!(rdkafka_security_config)
  consumer_config
end

#rdkafka_producer ⇒ Object 



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# File 'lib/racecar/config.rb', line 241

def rdkafka_producer
  producer_config = producer.map do |param|
    param.split("=", 2).map(&:strip)
  end.to_h
  producer_config.merge!(rdkafka_security_config)
  producer_config
end

#statistics_interval_ms ⇒ Object 



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# File 'lib/racecar/config.rb', line 172

def statistics_interval_ms
  if Rdkafka::Config.statistics_callback
    statistics_interval * 1000
  else
    STATISTICS_DISABLED_VALUE
  end
end

#validate! ⇒ Object 



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# File 'lib/racecar/config.rb', line 198

def validate!
  if brokers.empty?
    raise ConfigError, "`brokers` must not be empty"
  end

  if socket_timeout <= max_wait_time
    raise ConfigError, "`socket_timeout` must be longer than `max_wait_time`"
  end

  if max_pause_timeout && !pause_with_exponential_backoff?
    raise ConfigError, "`max_pause_timeout` only makes sense when `pause_with_exponential_backoff` is enabled"
  end
end