Class: Mouth::Source

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tuple) ⇒ Source

Returns a new instance of Source.



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# File 'lib/mouth/source.rb', line 6

def initialize(tuple)
  self.all_attributes = tuple
end

Instance Attribute Details

#all_attributes ⇒ Object

Returns the value of attribute all_attributes.



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# File 'lib/mouth/source.rb', line 4

def all_attributes
  @all_attributes
end

Class Method Details

.all ⇒ Object

Returns an array of tuples:

“auth.inline_logged_in”, kind: “counter|timer”, … 


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# File 'lib/mouth/source.rb', line 12

def self.all
  col_names = Mouth.mongo.collections.collect(&:name) - %w(dashboards graphs system.indexes)
  col_names.select! {|c| c =~ /^mouth_.+/ }
  
  tuples = []
  col_names.each do |col_name|
    namespace = col_name.match(/mouth_(.+)/)[1]
    counters, timers, gauges = all_for_collection(Mouth.collection(col_name))
    counters.each {|s| tuples << {:source => "#{namespace}.#{s}", :kind => "counter"} }
    timers.each {|s| tuples << {:source => "#{namespace}.#{s}", :kind => "timer"} }
    gauges.each {|s| tuples << {:source => "#{namespace}.#{s}", :kind => "gauge"} }
  end
  
  tuples.sort_by {|t| "#{t[:kind]}#{t[:source]}" }.collect {|t| new(t) }
end

.all_for_collection(col, window = Mouth.current_timestamp - 120) ⇒ Object 



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# File 'lib/mouth/source.rb', line 28

def self.all_for_collection(col, window = Mouth.current_timestamp - 120)
  map_function = <<-JS
    function() {
      var k, vh;
      for (k in this.c) {
        vh = {};
        vh[k] = true;
        emit("counters", {ks: vh});
      }
      for (k in this.m) {
        vh = {};
        vh[k] = true;
        emit("timers", {ks: vh});
      }
      for (k in this.g) {
        vh = {};
        vh[k] = true;
        emit("gauges", {ks: vh});
      }
    }
  JS
  
  reduce_function = <<-JS
    function(key, values) {
      var ret = {ks: {}}, k;
      
      values.forEach(function(value) {
        for (k in value.ks) {
          ret.ks[k] = true
        }
      });
      return ret;
    }
  JS
  
  result = col.map_reduce(map_function, reduce_function, :out => {:inline => true}, :raw => true, :query => {"t" => {"$gte" => window}})
  
  counters = []
  timers = []
  gauges = []
  if result && result["results"].is_a?(Array)
    result["results"].each do |r|
      k, v = r["_id"], r["value"]
      if k == "timers"
        timers << v["ks"].keys
      elsif k == "counters"
        counters << v["ks"].keys
      elsif k == "gauges"
        gauges << v["ks"].keys
      end
    end
  end
  
  [counters.flatten.compact.uniq, timers.flatten.compact.uniq, gauges.flatten.compact.uniq]
end