class TingYun::Metrics::Stats

Attributes

apdex_f[RW]
apdex_s[RW]
apdex_t[RW]
call_count[RW]
max_call_time[RW]
min_call_time[RW]
sum_of_squares[RW]
total_call_time[RW]
total_exclusive_time[RW]

Public Class Methods

create_from_hash(hash_value) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 16
def self.create_from_hash(hash_value)
  stats = Stats.new
  stats.call_count           = hash_value[:count] if hash_value[:count]
  stats.total_call_time      = hash_value[:total] if hash_value[:total]
  stats.total_exclusive_time = hash_value[:total] if hash_value[:total]
  stats.min_call_time        = hash_value[:min] if hash_value[:min]
  stats.max_call_time        = hash_value[:max] if hash_value[:max]
  stats.sum_of_squares       = hash_value[:sum_of_squares] if hash_value[:sum_of_squares]
  stats
end
new() click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 28
def initialize
  reset
end

Public Instance Methods

==(other) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 137
def ==(other)
  other.class == self.class &&
      (
      @min_call_time == other.min_call_time &&
          @max_call_time == other.max_call_time &&
          @total_call_time == other.total_call_time &&
          @total_exclusive_time == other.total_exclusive_time &&
          @sum_of_squares == other.sum_of_squares &&
          @call_count == other.call_count
      )
end
increment_count(value = 1) click to toggle source

increments the call_count by one

# File lib/ting_yun/metrics/stats.rb, line 133
def increment_count(value = 1)
  @call_count += value
end
is_reset?() click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 46
def is_reset?
  call_count == 0 && total_call_time == 0.0 && total_exclusive_time == 0.0
end
merge(other_stats) click to toggle source

self不变

# File lib/ting_yun/metrics/stats.rb, line 51
def merge(other_stats)
  stats = self.clone
  stats.merge!(other_stats)
end
merge!(other) click to toggle source

self变化

# File lib/ting_yun/metrics/stats.rb, line 57
def merge!(other)
  @min_call_time = other.min_call_time if min_time_less?(other)
  @max_call_time = other.max_call_time if max_time?(other)
  @total_call_time += other.total_call_time
  @total_exclusive_time += other.total_exclusive_time
  @sum_of_squares += other.sum_of_squares
  @call_count += other.call_count
  self
end
metrics(stat_key) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 151
def metrics(stat_key)
  metrics = []

  metrics << int(call_count, stat_key)
  if max_call_time != 0.0 #apedx
    metrics << float(total_call_time, stat_key)
    metrics << float(total_exclusive_time, stat_key)
    metrics << float(max_call_time, stat_key)
  end

  if min_call_time !=0.0 #
    metrics << float(min_call_time, stat_key)
    metrics << float(sum_of_squares, stat_key)
  end

  metrics
end
record(value=nil, aux=nil) { |self| ... } click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 86
def record(value=nil, aux=nil, &blk)
  if blk
    yield self
  else
    case value
      when Numeric
        aux ||= value
        self.record_data_point(value, aux)
      when :apdex_s, :apdex_t, :apdex_f
        self.record_apdex(value, aux)
      when TingYun::Metrics::Stats
        self.merge!(value)
    end
  end
end
record_apdex(bucket, apdex_t) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 102
def record_apdex(bucket, apdex_t)
  case bucket
    when :apdex_s then @call_count += 1
    when :apdex_t then @total_call_time += 1
    when :apdex_f then @total_exclusive_time += 1
  end
  if apdex_t
    @max_call_time = apdex_t
  else
    ::TingYun::Agent.logger.warn("Attempted to set apdex_t to #{apdex_t.inspect}, backtrace = #{caller.join("\n")}")
  end
end
record_data_point(value, exclusive_time = value) click to toggle source

record a single data point into the statistical gatherer. The gatherer will aggregate all data points collected over a specified period and upload its data to the TingYun server

# File lib/ting_yun/metrics/stats.rb, line 119
def record_data_point(value, exclusive_time = value)
  @call_count += 1
  @total_call_time += value
  @min_call_time = exclusive_time if exclusive_time < @min_call_time || @call_count == 1
  @max_call_time = exclusive_time if exclusive_time > @max_call_time
  @total_exclusive_time += exclusive_time

  @sum_of_squares += (exclusive_time * exclusive_time)
  self
end
Also aliased as: trace_call
reset() click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 32
def reset
  @call_count = 0
  @total_call_time = 0.0
  @total_exclusive_time = 0.0
  @min_call_time = 0.0
  @max_call_time = 0.0
  @sum_of_squares = 0.0
end
to_json(*_) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 71
def to_json(*_)
  {
      'call_count' => call_count.to_i,
      'min_call_time' => min_call_time.to_f,
      'max_call_time' => max_call_time.to_f,
      'total_call_time' => total_call_time.to_f,
      'total_exclusive_time' => total_exclusive_time.to_f,
      'sum_of_squares' => sum_of_squares.to_f
  }.to_json(*_)
end
to_s() click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 67
def to_s
  "[#{'%2i' % call_count.to_i} calls #{'%.4f' % total_call_time.to_f}s / #{'%.4f' % total_exclusive_time.to_f}s ex]"
end
trace_call(value, exclusive_time = value)
Alias for: record_data_point

Protected Instance Methods

max_time?(other) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 175
def max_time?(other)
  other.max_call_time > max_call_time
end
min_time_less?(other) click to toggle source
# File lib/ting_yun/metrics/stats.rb, line 171
def min_time_less?(other)
  (other.min_call_time < min_call_time && other.call_count > 0) || call_count == 0
end