lib/gruf/interceptors/timer.rb
# frozen_string_literal: true
# Copyright (c) 2017-present, BigCommerce Pty. Ltd. All rights reserved
#
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
# Software.
#
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
module Gruf
module Interceptors
##
# Utility class that can be used by interceptors to time requests
#
class Timer
##
# Represents a timed result for an interceptor
#
# @property [Object] message The protobuf message
# @property [Float] elapsed The elapsed time of the request
#
class Result
# @!attribute [r] message
# @return [Object] The returned protobuf message
attr_reader :message
# @return [r] elapsed
# @return [Float] The time elapsed for this interceptor to execute
attr_reader :elapsed
##
# @param [Object] message The protobuf message
# @param [Float] elapsed The elapsed time of the request
# @param [Boolean] successful If the request was successful
#
def initialize(message, elapsed, successful)
@message = message
@elapsed = elapsed.to_f
@successful = successful ? true : false
end
##
# @return [Boolean] True if this was a successful request
#
def successful?
@successful
end
##
# @return [String] The name of the message class
#
def message_class_name
@message.class.name.to_s
end
##
# Return the execution time rounded to a specified precision
#
# @param [Integer] precision The amount of decimal places to round to
# @return [Float] The execution time rounded to the appropriate decimal point
#
def elapsed_rounded(precision: 2)
@elapsed.to_f.round(precision)
end
end
##
# Time a given code block and return a Timer::Result object
#
# @return [Gruf::Interceptors::Timer::Result]
#
def self.time
start_time = Time.now
message = yield
end_time = Time.now
elapsed = (end_time - start_time) * 1000.0
Result.new(message, elapsed, true)
rescue GRPC::BadStatus => e
end_time = Time.now
elapsed = (end_time - start_time) * 1000.0
Result.new(e, elapsed, false)
end
end
end
end