```ruby
require 'happy/xrp'

module Happy
  class Collector
    def initialize
      @logstash = Happy.logstash.with(type: 'market_prices')
    end

    def taint_eop list
      list.last[:eop] = true
    end

    def log_market_xrp_impl(base, counter)
      xrp = XRP.new(ENV['XRP_ADDRESS'])
      asks = xrp.market(base, counter)
      taint_eop(asks)
      Happy.logger.debug { "Count of asks(#{base}, #{counter}): #{asks.size}" }
      @logstash.at_once.stash_all(asks)
    end

    def log_market_xrp
      log_market_xrp_impl(Currency::BTC_P, Currency::XRP)
      log_market_xrp_impl(Currency::XRP, Currency::KRW_P)
    end

    def log_market_xcoin
      xcoin = XCoin.new
      asks = xcoin.market
      taint_eop(asks)
      Happy.logger.debug { "Count of asks(XCoin): #{asks.size}" }
      @logstash.at_once.stash_all(asks)
    end
  end
end
```

Check the count of prices
user
```ruby
require 'happy/xrp'

module Happy
  class Collector
    def initialize
      @logstash = Happy.logstash.with(type: 'market_prices')
    end

    def taint_eop list
      list.last[:price_count] = list.size
    end

    def log_market_xrp_impl(base, counter)
      xrp = XRP.new(ENV['XRP_ADDRESS'])
      asks = xrp.market(base, counter)
      taint_eop(asks)
      Happy.logger.debug { "Count of asks(#{base}, #{counter}): #{asks.size}" }
      @logstash.at_once.stash_all(asks)
    end

    def log_market_xrp
      log_market_xrp_impl(Currency::BTC_P, Currency::XRP)
      log_market_xrp_impl(Currency::XRP, Currency::KRW_P)
    end

    def log_market_xcoin
      xcoin = XCoin.new
      asks = xcoin.market
      taint_eop(asks)
      Happy.logger.debug { "Count of asks(XCoin): #{asks.size}" }
      @logstash.at_once.stash_all(asks)
    end
  end
end
```
assistant