Class: Widget

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, backfill = 0, &block) ⇒ Widget

Returns a new instance of Widget.



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# File 'lib/mancora/widget.rb', line 5

def initialize(name, backfill = 0, &block)
  @name = name
  @conditions = {}
  instance_eval &block

  lazy_names

  #run all backfills plus the original @time
  backfill.downto(0) do |b|
    b != 0 ? @backfilling = true : @backfilling = false
    @run_time = @time - b.hours

    @intervals.each do |i|
      time_interval = @query.blank? ? get_interval(i) : {}
      all_conditions = @conditions.merge(time_interval)
      run(i, all_conditions) if should_i_run?(i)
    end
  end
end

Instance Attribute Details

#class_method(str) ⇒ Object

Returns the value of attribute class_method.



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# File 'lib/mancora/widget.rb', line 2

def class_method
  @class_method
end

#class_name(str) ⇒ Object

Returns the value of attribute class_name.



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# File 'lib/mancora/widget.rb', line 2

def class_name
  @class_name
end

#conditions(str) ⇒ Object

Returns the value of attribute conditions.



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# File 'lib/mancora/widget.rb', line 2

def conditions
  @conditions
end

#count_type(str) ⇒ Object

Returns the value of attribute count_type.



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# File 'lib/mancora/widget.rb', line 2

def count_type
  @count_type
end

#end ⇒ Object

Returns the value of attribute end.



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# File 'lib/mancora/widget.rb', line 2

def end
  @end
end

#field(str) ⇒ Object

Returns the value of attribute field.



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# File 'lib/mancora/widget.rb', line 2

def field
  @field
end

#intervals(opts) ⇒ Object

Returns the value of attribute intervals.



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# File 'lib/mancora/widget.rb', line 2

def intervals
  @intervals
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/mancora/widget.rb', line 2

def name
  @name
end

#query(str) ⇒ Object

Returns the value of attribute query.



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# File 'lib/mancora/widget.rb', line 2

def query
  @query
end

#start ⇒ Object

Returns the value of attribute start.



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# File 'lib/mancora/widget.rb', line 2

def start
  @start
end

#time(str) ⇒ Object

Returns the value of attribute time.



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# File 'lib/mancora/widget.rb', line 2

def time
  @time
end

Instance Method Details

#get_interval(interval) ⇒ Object

given an interval symbol, return a hash with the correct conditions



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# File 'lib/mancora/widget.rb', line 91

def get_interval(interval)
  case interval
    when :custom
      return {}
    when :hourly
      @start = (@run_time - 1.hour).beginning_of_hour
      @end = (@run_time - 1.hour).end_of_hour
      return {@field => @start..@end}
    when :daily
      @start = @run_time.yesterday.beginning_of_day
      @end = @run_time.yesterday.end_of_day
      return {@field => @start..@end}
    when :weekly
      @start = @run_time.yesterday.beginning_of_week
      @end = @run_time.yesterday.end_of_week
      return {@field => @start..@end}
    when :monthly
      @start = @run_time.yesterday.beginning_of_month
      @end = @run_time.yesterday.end_of_month
      return {@field => @start..@end}
    when :yearly
      @start = @run_time.yesterday.beginning_of_year
      @end = @run_time.yesterday.end_of_year
      return {@field => @start..@end}
  end
end

#lazy_names ⇒ Object 



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# File 'lib/mancora/widget.rb', line 57

def lazy_names
  @time ||= Time.now
  @field ||= :created_at
  @count_type ||= :timed
end

#run(interval, all_conditions) ⇒ Object 



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# File 'lib/mancora/widget.rb', line 63

def run(interval, all_conditions)
  puts "Running " + interval.to_s + " " + self.name.to_s

  if @class_method
    @class_name.send(@class_method)
  else
    if @count_type == :timed
      result = @class_name.where(all_conditions)
    elsif @count_type == :total
      count = (@backfilling ? nil : @class_name.where(@conditions).count)
    elsif !@query.blank?
      result = eval(@query)
    end

    #create or update record, this way we can backfill without overwriting
    obj = Mancora::Stat.find_or_initialize_by_name_and_start(name, @start)

    obj.update_attributes(
       :name => @name,
       :start => @start,
       :end => @end,
       :intervals => interval,
       :count => (@count_type == :timed ? result.count : count)
    )
  end
end

#should_i_run?(interval) ⇒ Boolean

given an interval symbol, determine whether or not a query (and relative db insert) should take place

Returns:

  • (Boolean) 


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# File 'lib/mancora/widget.rb', line 119

def should_i_run?(interval)
  if interval == :hourly
    true
  elsif interval == :daily && @run_time.hour == 0
    true
  elsif interval == :weekly && @run_time.beginning_of_week == @run_time.beginning_of_hour
    true
  elsif interval == :monthly && @run_time.day == 1 && @run_time.hour == 0
    true
  elsif interval == :yearly && @run_time.beginning_of_year == @run_time.beginning_of_hour
    true
  else
    false
  end
end