Class: RailsConsolePro::Services::ProfileCollector

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_console_pro/services/profile_collector.rb

Overview

Collects metrics for profiling a block or relation execution

Constant Summary collapse

SQL_EVENT = 
'sql.active_record'
INSTANTIATION_EVENT = 
'instantiation.active_record'
CACHE_EVENTS = 
%w[
  cache_read.active_support
  cache_generate.active_support
  cache_fetch_hit.active_support
  cache_write.active_support
].freeze
IGNORED_SQL_NAMES = 
%w[SCHEMA CACHE EXPLAIN TRANSACTION].freeze
WRITE_SQL_REGEX = 
/\A\s*(INSERT|UPDATE|DELETE|MERGE|REPLACE)\b/i.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = RailsConsolePro.config) ⇒ ProfileCollector

Returns a new instance of ProfileCollector.



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# File 'lib/rails_console_pro/services/profile_collector.rb', line 20

def initialize(config = RailsConsolePro.config)
  @config = config
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/rails_console_pro/services/profile_collector.rb', line 18

def config
  @config
end

Instance Method Details

#profile(label: nil) ⇒ Object

Raises:



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# File 'lib/rails_console_pro/services/profile_collector.rb', line 24

def profile(label: nil)
  raise ArgumentError, 'ProfileCollector#profile requires a block' unless block_given?

  reset_state(label)
  subscribe!

  wall_start = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  @started_at = Time.current

  begin
    @result = yield
  rescue => e
    @error = e
  ensure
    @finished_at = Time.current
    @duration_ms = ((Process.clock_gettime(Process::CLOCK_MONOTONIC) - wall_start) * 1000.0).round(2)
    unsubscribe!
  end

  build_result
end