Class: Heapy::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/heapy.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/heapy.rb', line 8

def initialize(argv)
  @cmd    = argv.shift
  @file   = argv.shift
  @number = argv.shift
  @args   = argv
end

Instance Method Details

#help ⇒ Object 



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# File 'lib/heapy.rb', line 15

def help
  puts <<-HALP
$ heapy read <file|command> <number>

When run with only a file, it will output the generation and count pairs:

  $ heapy read tmp/2015-09-30-heap.dump
Generation: nil object count: 209191
Generation:  14 object count: 407
Generation:  15 object count: 638
Generation:  16 object count: 748
Generation:  17 object count: 1023
Generation:  18 object count: 805

When run with a file and a number it will output detailed information for that
generation:

  $ heapy read tmp/2015-09-30-heap.dump 17

Analyzing Heap (Generation: 17)
-------------------------------

allocated by memory (44061517) (in bytes)
==============================
  39908512  /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/timeout.rb:79
   1284993  /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/openssl/buffering.rb:182
201068  /app/vendor/bundle/ruby/2.2.0/gems/json-1.8.3/lib/json/common.rb:223
189272  /app/vendor/bundle/ruby/2.2.0/gems/newrelic_rpm-3.13.2.302/lib/new_relic/agent/stats_engine/stats_hash.rb:39
172531  /app/vendor/ruby-2.2.3/lib/ruby/2.2.0/net/http/header.rb:172
 92200  /app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131
HALP
end

#run ⇒ Object 



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# File 'lib/heapy.rb', line 48

def run

  case @cmd
  when "--help"
    help
  when nil
    help
  when "read"
    if @number
      Analyzer.new(@file).drill_down(@number)
    else
      Analyzer.new(@file).analyze
    end
  else
    help
  end
end