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Contents
# Stats that are associated with each instrumented method.
class ScoutRails::MetricStats
attr_accessor :call_count
attr_accessor :min_call_time
attr_accessor :max_call_time
attr_accessor :total_call_time
attr_accessor :total_exclusive_time
attr_accessor :sum_of_squares
def initialize(scoped = false)
@scoped = scoped
self.call_count = 0
self.total_call_time = 0.0
self.total_exclusive_time = 0.0
self.min_call_time = 0.0
self.max_call_time = 0.0
self.sum_of_squares = 0.0
end
def update!(call_time,exclusive_time)
# If this metric is scoped inside another, use exclusive time for min/max and sum_of_squares. Non-scoped metrics
# (like controller actions) track the total call time.
t = (@scoped ? exclusive_time : call_time)
self.min_call_time = t if self.call_count == 0 or t < min_call_time
self.max_call_time = t if self.call_count == 0 or t > max_call_time
self.call_count +=1
self.total_call_time += call_time
self.total_exclusive_time += exclusive_time
self.sum_of_squares += (t * t)
self
end
# combines data from another MetricStats object
def combine!(other)
self.call_count += other.call_count
self.total_call_time += other.total_call_time
self.total_exclusive_time += other.total_exclusive_time
self.min_call_time = other.min_call_time if self.min_call_time.zero? or other.min_call_time < self.min_call_time
self.max_call_time = other.max_call_time if other.max_call_time > self.max_call_time
self.sum_of_squares += other.sum_of_squares
self
end
# To avoid conflicts with different JSON libaries handle JSON ourselves.
# Time-based metrics are converted to milliseconds from seconds.
def to_json(*a)
%Q[{"total_exclusive_time":#{total_exclusive_time*1000},"min_call_time":#{min_call_time*1000},"call_count":#{call_count},"sum_of_squares":#{sum_of_squares*1000},"total_call_time":#{total_call_time*1000},"max_call_time":#{max_call_time*1000}}]
end
end # class MetricStats
Version data entries
40 entries across 40 versions & 2 rubygems