Class: Profiler::ConsoleProfiler

Inherits:
Object
  • Object
show all
Defined in:
lib/profiler/console_profiler.rb

Constant Summary collapse

CONSOLE_COLLECTOR_CLASSES = 
[
  Collectors::DatabaseCollector,
  Collectors::CacheCollector,
  Collectors::HttpCollector,
  Collectors::DumpCollector,
  Collectors::LogCollector,
  Collectors::ExceptionCollector,
  Collectors::EnvCollector,
  Collectors::FlameGraphCollector
].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expression:) ⇒ ConsoleProfiler

Returns a new instance of ConsoleProfiler.



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# File 'lib/profiler/console_profiler.rb', line 34

def initialize(expression:)
  @expression = expression
end

Class Method Details

.profile(expression:, &block) ⇒ Object 



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# File 'lib/profiler/console_profiler.rb', line 28

def self.profile(expression:, &block)
  return block.call unless Profiler.enabled? && Profiler.configuration.track_console

  new(expression: expression).run(&block)
end

Instance Method Details

#run(&block) ⇒ Object 



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# File 'lib/profiler/console_profiler.rb', line 38

def run(&block)
  profile = Models::Profile.new
  profile.profile_type = "console"
  profile.gem_version = Profiler::VERSION
  profile.path = @expression.length > 200 ? "#{@expression[0, 200]}..." : @expression
  profile.method = "CONSOLE"

  console_collector = Collectors::ConsoleCollector.new(profile, expression: @expression)
  collectors = [console_collector] + CONSOLE_COLLECTOR_CLASSES.map { |klass| klass.new(profile) }
  collectors.each { |c| c.subscribe if c.respond_to?(:subscribe) }

  exception_collector = collectors.find { |c| c.is_a?(Collectors::ExceptionCollector) }

  memory_before = current_memory if Profiler.configuration.track_memory

  console_status = "completed"

  previous_token = Profiler::CurrentContext.token
  Profiler::CurrentContext.token = profile.token
  result = nil
  begin
    result = block.call
    console_collector.set_return_value(result)
    result
  rescue => e
    console_status = "failed"
    exception_collector&.capture(e)
    raise
  ensure
    Profiler::CurrentContext.token = previous_token
    if Profiler.configuration.track_memory
      profile.memory = current_memory - memory_before
    end

    profile.finish(console_status == "completed" ? 200 : 500)

    collectors.each do |collector|
      begin
        collector.collect if collector.respond_to?(:collect)
        profile.add_collector_metadata(collector)
      rescue => e
        warn "Profiler ConsoleProfiler: Collector #{collector.class} failed: #{e.message}"
      end
    end

    Profiler.storage.save(profile.token, profile)
  end
end