Class: AwsReporting::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/aws-reporting/generator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#force ⇒ Object

Returns the value of attribute force.



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# File 'lib/aws-reporting/generator.rb', line 3

def force
  @force
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/aws-reporting/generator.rb', line 3

def path
  @path
end

Instance Method Details

#build_alarm_tree(alarms) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 85

def build_alarm_tree(alarms)
  alarm_tree = {}
  alarms.each{|alarm|
    key = {:region => alarm[:region],
           :namespace => alarm[:namespace],
           :dimensions => alarm[:dimensions],
           :metric_name => alarm[:metric_name]}
    alarm_tree[key] = merge_status(alarm_tree[key], alarm[:status])
  }
  alarm_tree
end

#copy_template(path, force) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 147

def copy_template(path, force)
  report_path = File.expand_path(path)
  if force != true and File.exist?(path)
    error = AwsReporting::Error::OverwriteError.new
    error.path = report_path
    raise error
  end

  template_path = File.expand_path('../../../template', __FILE__)
  template_files = Dir.glob(template_path + '/*')
  FileUtils.mkdir_p(report_path)
  FileUtils.cp_r(template_files, report_path)
end

#download(base_path, plan, start_time, end_time, period, name_resolvers, timestamp) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 105

def download(base_path, plan, start_time, end_time, period, name_resolvers, timestamp)
  metrics = Hash.new{|h, k| h[k] = Hash.new{|h, k| h[k] = []}}

  alarms = AwsReporting::Alarm.get_alarms()
  alarm_tree = build_alarm_tree(alarms)

  mutex = Mutex.new
  started_at = Time.now
  num_of_metrics = plan.length
  num_of_downloaded = 0
  Parallel.each_with_index(plan, :in_threads => 8){|entry, i|
    namespace = entry[:namespace]
    metric_name = entry[:metric_name]
    dimensions = entry[:dimensions]
    statistics = entry[:statistics]
    region = entry[:region]

    mutex.synchronize do
      num_of_downloaded += 1
      Formatador.redisplay_progressbar(num_of_downloaded, num_of_metrics, {:started_at => started_at})
    end

    data = AwsReporting::Statistics.get(region, namespace, metric_name, start_time, end_time, period, dimensions, statistics)
    set_status(data, alarm_tree)
    file = AwsReporting::Store.save(base_path, data)

    identification = {:dimensions => dimensions, :region => region}
    metrics[namespace][identification] << file
  }

  report_info = {:start_time => start_time.to_s,
                 :end_time => end_time.to_s,
                 :period => period.to_s,
                 :timestamp => timestamp.to_s,
                 :num_of_metrics => plan.length.to_s,
                 :version => Version.get}

  open(base_path + '/metrics.json', 'w'){|f|
    f.print JSON.dump({:report_info => report_info, :metrics => transform(metrics, name_resolvers), :alarms => alarms})
  }
end

#expand(dimension_type, dimensions) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 59

def expand(dimension_type, dimensions)
  dimension_hash = {}

  dimensions.each{|dimension|
    dimension_hash[dimension[:name]] = dimension[:value]
  }

  values = []
  dimension_type.each{|dimension_name|
    values << dimension_hash[dimension_name] 
  }
  values.join(' ')
end

#format_path(path) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 5

def format_path(path)
  path.split('/')[-2..-1]
      .join('/')
end

#generate ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 161

def generate
  timestamp = Time.now

  AwsReporting::Config.load()

  puts 'Report generating started.'
  copy_template(@path, @force)
  data_dir = @path + '/data'

  puts '(1/3) Planning...'
  plan = Plan.generate
  puts "Planning complete."
  start_time = Time.now - 24 * 60 * 60 * 14
  end_time = Time.now
  period = 60 * 60
  puts '(2/3) Building name tables...'
  name_resolvers = AwsReporting::Resolvers.new
  name_resolvers.init
  puts 'Name tables were builded.'
  puts '(3/3) Downloading metrics...'
  download(data_dir, plan, start_time, end_time, period, name_resolvers, timestamp)
  puts 'Downloading metrics done.'
  puts 'Report generating complete!'
end

#merge_status(s0, s1) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 73

def merge_status(s0, s1)
  if s0 == nil or s1 == nil
    s0 || s1
  else
    if s0 == :ALARM or s1 == :ALARM
      'ALARM'
    else
      'OK'
    end
  end
end

#set_status(data, alarm_tree) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 97

def set_status(data, alarm_tree)
  key = {:region => data[:info][:region],
         :namespace => data[:info][:namespace],
         :dimensions => data[:info][:dimensions],
         :metric_name => data[:info][:metric_name]}
  data[:info][:status] = alarm_tree[key] if alarm_tree[key]
end

#sort_result!(result) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 45

def sort_result!(result)
  result.sort_by!{|namespace_table| namespace_table[:namespace]}
  result.each{|namespace_table|
    namespace_table[:dimension_table].sort_by!{|dimension_table| dimension_table[:dimension_type].join(' ')}
  }

  result.each{|namespace_table|
    namespace_table[:dimension_table].each{|dimension_table|
      dimension_type = dimension_table[:dimension_type]
      dimension_table[:elements].sort_by!{|element| expand(dimension_type, element[:dimensions]) }
    }
  }
end

#transform(metrics, name_resolvers) ⇒ Object 



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# File 'lib/aws-reporting/generator.rb', line 10

def transform(metrics, name_resolvers)
  temp = Hash.new{|h, k| h[k] = Hash.new{|h, k| h[k] = [] }}
  metrics.each{|namespace, value|
    value.each{|identification, files|
      element =  {:region => identification[:region],
                  :namespace => namespace,
                  :dimensions => identification[:dimensions],
                  :files => files.sort_by{|entry| entry[:info][:metric_name]}.map{|entry| format_path(entry[:path])}}

      element[:name] = name_resolvers.get_name(element)

      dimension_type = identification[:dimensions].map{|item| item[:name]}.sort

      temp[namespace][dimension_type] << element
    }
  }

  temp2 = Hash.new{|h, k| h[k] = [] }
  temp.each{|namespace, dimension_table|
    dimension_table.each{|dimension_type, elements| 
      temp2[namespace] << {:dimension_type => dimension_type,
                           :elements => elements}
    }
  }

  result = []
  temp2.each{|namespace, dimension_table|
    result << {:namespace => namespace, :dimension_table => dimension_table}
  }

  sort_result!(result)

  result
end