Class: Nosey::Munin::Graph

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

Overview

Parse a Nosey socket for Munin

Defined Under Namespace

Classes: DSL

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = nil) {|_self| ... } ⇒ Graph

Returns a new instance of Graph.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/nosey/munin.rb', line 30

def initialize(data=nil)
  @data = data
  @category = 'App' # Default it to app duuude
  yield self if block_given?
  self
end

Instance Attribute Details

#category ⇒ Object

Returns the value of attribute category.



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# File 'lib/nosey/munin.rb', line 27

def category
  @category
end

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/nosey/munin.rb', line 27

def data
  @data
end

#filter(&block) ⇒ Object

Setup a filter from the graphing DSL so that we can grep out specific probes



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# File 'lib/nosey/munin.rb', line 97

def filter
  @filter
end

#labels ⇒ Object

Returns the value of attribute labels.



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# File 'lib/nosey/munin.rb', line 27

def labels
  @labels
end

#probe_set ⇒ Object

Default to the first probeset if nothing is specified



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# File 'lib/nosey/munin.rb', line 88

def probe_set
  report[@probe_set ||= report.keys.first]
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/nosey/munin.rb', line 27

def title
  @title
end

#vertical_label ⇒ Object

Returns the value of attribute vertical_label.



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# File 'lib/nosey/munin.rb', line 27

def vertical_label
  @vertical_label
end

Instance Method Details

#configure ⇒ Object

Munin calls this to setup the title and labels for the chart graph_title THE TITLE OF YOUR GRAPH graph_category THE CATEGORY / GROUP OF YOUR GRAPH graph_vlabel Count total.label Total other.label Other



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# File 'lib/nosey/munin.rb', line 43

def configure
  body = StringIO.new
  body.puts "graph_title #{title}"
  body.puts "graph_category #{category}"
  body.puts "graph_vlabel #{vertical_label}"
  
  (@labels || {}).each do |field, label|
    body.puts "#{field}.label #{label}"
  end
  
  body.rewind
  body.read
end

#munin_hash(root_key = nil, hash = self.probe_set) ⇒ Object 



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# File 'lib/nosey/munin.rb', line 69

def munin_hash(root_key=nil,hash=self.probe_set)
  # TODO perform processing for more complicated probes, like samplers, etc
  hash.reduce({}) do |memo, (name, value)|
    # If there's NOt a filter OR we have a filter and it filters...
    if !filter or (filter and filter.call(name))
      case value
      when Hash # Its nested, go deep! Oooo yeah!
        munin_hash(format_field(root_key, name), value).each do |name, value|
          memo[format_field(root_key, name)] = value.to_a
        end
      else # Its cool, return this mmmkay? Sheesh man
        memo[format_field(root_key, name)] = [name, value]
      end
    end
    memo
  end
end

#sample ⇒ Object

Munin calls this to set the values in the chart total.value 0 other.value 2



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# File 'lib/nosey/munin.rb', line 60

def sample
  body = StringIO.new
  munin_hash.each do |field, (label, value)|
    body.puts "#{field}.value #{value}"
  end
  body.rewind
  body.read
end