Class: Tailstrom::Command::Stat

Inherits:
Object
  • Object
show all
Defined in:
lib/tailstrom/command/stat.rb

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Stat

Returns a new instance of Stat.



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# File 'lib/tailstrom/command/stat.rb', line 8

def initialize(options)
  @infile = options[:static_infile] || $stdin
  @counters = CounterCollection.new
  @options = { :async => !options[:static_infile] }.merge options
  @table = Table.new schema
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/tailstrom/command/stat.rb', line 26

def run
  reader = TailReader.new @infile, @options
  reader.each_line do |line|
    @counters[line[:key]] << line[:value]
  end

  height = terminal_height
  printed_lines_sum = printed_lines = 0
  begin
    sleep @options[:interval]

    if printed_lines > 0 && (@multiline ||= @counters.size > 1)
      @table.puts
      printed_lines += 1
    end
    printed_lines = 0

    if (printed_lines_sum %= height) == 0
      @table.print_header
    end

    if @counters.size == 0
      @counters[:nil].count
    end

    printed_lines = print_counters
    printed_lines_sum += printed_lines

    @counters.clear
  end until reader.eof?
rescue Interrupt
  exit 0
end

#schema ⇒ Object 



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# File 'lib/tailstrom/command/stat.rb', line 15

def schema
  [
    ({ :name => 'time', :width => 8 } if @options[:async]),
    { :name => 'count', :width => 7 },
    { :name => 'min', :width => 10 },
    { :name => 'max', :width => 10 },
    { :name => 'avg', :width => 10 },
    { :name => 'key', :width => 10, :align => :left }
  ].compact
end