Class: LogStash::Inputs::Redis

Inherits:
Threadable
  • Object
show all
Defined in:
lib/logstash/inputs/redis.rb

Constant Summary collapse

BATCH_EMPTY_SLEEP = 
0.25

Instance Method Summary collapse

Instance Method Details

#add_external_redis_builder(builder) ⇒ Object

public API use to store a proc that can provide a redis instance or mock



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# File 'lib/logstash/inputs/redis.rb', line 65

def add_external_redis_builder(builder) #callable
  @redis_builder = builder
  self
end

#new_redis_instance ⇒ Object 



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# File 'lib/logstash/inputs/redis.rb', line 76

def new_redis_instance
  @redis_builder.call
end

#register ⇒ Object 



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# File 'lib/logstash/inputs/redis.rb', line 80

def register
  @redis_url = "redis://#{@password}@#{@host}:#{@port}/#{@db}"

  # TODO remove after setting key and data_type to true
  if @queue
    if @key || @data_type
      raise RuntimeError.new(
        "Cannot specify queue parameter and key or data_type"
      )
    end
    @key = @queue
    @data_type = 'list'
  end

  if !@key || !@data_type
    raise RuntimeError.new(
      "Must define queue, or key and data_type parameters"
    )
  end
  # end TODO

  @redis_builder ||= method(:internal_redis_builder)

  # just switch on data_type once
  if @data_type == 'list' || @data_type == 'dummy'
    @run_method = method(:list_runner)
    @stop_method = method(:list_stop)
  elsif @data_type == 'channel'
    @run_method = method(:channel_runner)
    @stop_method = method(:subscribe_stop)
  elsif @data_type == 'pattern_channel'
    @run_method = method(:pattern_channel_runner)
    @stop_method = method(:subscribe_stop)
  end

  @list_method = batched? ? method(:list_batch_listener) : method(:list_single_listener)

  # TODO(sissel, boertje): set @identity directly when @name config option is removed.
  @identity = @name != 'default' ? @name : "#{@redis_url} #{@data_type}:#{@key}"
  @logger.info("Registering Redis", :identity => @identity)
end

#run(output_queue) ⇒ Object

def register



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# File 'lib/logstash/inputs/redis.rb', line 122

def run(output_queue)
  @run_method.call(output_queue)
rescue LogStash::ShutdownSignal
  # ignore and quit
end

#stop ⇒ Object

def run



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# File 'lib/logstash/inputs/redis.rb', line 128

def stop
  @stop_method.call
end

#use_redis(instance) ⇒ Object

use to apply an instance directly and bypass the builder



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# File 'lib/logstash/inputs/redis.rb', line 71

def use_redis(instance)
  @redis = instance
  self
end