Class: Fluent::Test::Driver::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/test/driver/base.rb

Direct Known Subclasses

BaseOwned, BaseOwner

Constant Summary collapse

DEFAULT_TIMEOUT = 
300

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, opts: {}, &block) ⇒ Base

Returns a new instance of Base.



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# File 'lib/fluent/test/driver/base.rb', line 37

def initialize(klass, opts: {}, &block)
  if klass.is_a?(Class)
    @instance = klass.new
    if block
      @instance.singleton_class.module_eval(&block)
      @instance.send(:initialize)
    end
  else
    @instance = klass
  end
  @instance.under_plugin_development = true

  @socket_manager_server = nil

  @logs = []

  @run_post_conditions = []
  @run_breaking_conditions = []
  @broken = false
end

Instance Attribute Details

#instance ⇒ Object (readonly)

Returns the value of attribute instance.



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# File 'lib/fluent/test/driver/base.rb', line 33

def instance
  @instance
end

#logs ⇒ Object (readonly)

Returns the value of attribute logs.



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# File 'lib/fluent/test/driver/base.rb', line 33

def logs
  @logs
end

Instance Method Details

#break_if(&block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/fluent/test/driver/base.rb', line 67

def break_if(&block)
  raise ArgumentError, "block is not given" unless block_given?
  @run_breaking_conditions << block
end

#broken? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/test/driver/base.rb', line 72

def broken?
  @broken
end

#configure(conf, syntax: :v1) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/fluent/test/driver/base.rb', line 58

def configure(conf, syntax: :v1)
  raise NotImplementedError
end

#end_if(&block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/fluent/test/driver/base.rb', line 62

def end_if(&block)
  raise ArgumentError, "block is not given" unless block_given?
  @run_post_conditions << block
end

#instance_hook_after_started ⇒ Object 



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# File 'lib/fluent/test/driver/base.rb', line 131

def instance_hook_after_started
  # insert hooks for tests available after instance.start
end

#instance_hook_before_stopped ⇒ Object 



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# File 'lib/fluent/test/driver/base.rb', line 135

def instance_hook_before_stopped
  # same with above
end

#instance_shutdown(log: Logger.new($stdout)) ⇒ Object 



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# File 'lib/fluent/test/driver/base.rb', line 139

def instance_shutdown(log: Logger.new($stdout))
  instance_hook_before_stopped

  show_errors_if_exists = ->(label, block){
    begin
      block.call
    rescue => e
      log.error "unexpected error while #{label}, #{e.class}:#{e.message}"
      e.backtrace.each do |bt|
        log.error "\t#{bt}"
      end
    end
  }

  show_errors_if_exists.call(:stop,            ->(){ @instance.stop unless @instance.stopped? })
  show_errors_if_exists.call(:before_shutdown, ->(){ @instance.before_shutdown unless @instance.before_shutdown? })
  show_errors_if_exists.call(:shutdown,        ->(){ @instance.shutdown unless @instance.shutdown? })
  show_errors_if_exists.call(:after_shutdown,  ->(){ @instance.after_shutdown unless @instance.after_shutdown? })

  if @instance.respond_to?(:server_wait_until_stop)
    @instance.server_wait_until_stop
  end

  if @instance.respond_to?(:event_loop_wait_until_stop)
    @instance.event_loop_wait_until_stop
  end

  show_errors_if_exists.call(:close, ->(){ @instance.close unless @instance.closed? })

  if @instance.respond_to?(:thread_wait_until_stop)
    @instance.thread_wait_until_stop
  end

  show_errors_if_exists.call(:terminate, ->(){ @instance.terminate unless @instance.terminated? })

  if @socket_manager_server
    @socket_manager_server.close
    if @socket_manager_server.is_a?(String) && File.exist?(@socket_manager_path)
      FileUtils.rm_f @socket_manager_path
    end
  end
end

#instance_start ⇒ Object 



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# File 'lib/fluent/test/driver/base.rb', line 103

def instance_start
  if @instance.respond_to?(:server_wait_until_start)
    @socket_manager_path = ServerEngine::SocketManager::Server.generate_path
    if @socket_manager_path.is_a?(String) && File.exist?(@socket_manager_path)
      FileUtils.rm_f @socket_manager_path
    end
    @socket_manager_server = ServerEngine::SocketManager::Server.open(@socket_manager_path)
    ENV['SERVERENGINE_SOCKETMANAGER_PATH'] = @socket_manager_path.to_s
  end

  unless @instance.started?
    @instance.start
  end
  unless @instance.after_started?
    @instance.after_start
  end

  if @instance.respond_to?(:thread_wait_until_start)
    @instance.thread_wait_until_start
  end

  if @instance.respond_to?(:event_loop_wait_until_start)
    @instance.event_loop_wait_until_start
  end

  instance_hook_after_started
end

#run(timeout: nil, start: true, shutdown: true, &block) ⇒ Object 



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# File 'lib/fluent/test/driver/base.rb', line 76

def run(timeout: nil, start: true, shutdown: true, &block)
  instance_start if start

  timeout ||= DEFAULT_TIMEOUT
  stop_at = Fluent::Clock.now + timeout
  @run_breaking_conditions << ->(){ Fluent::Clock.now >= stop_at }

  if !block_given? && @run_post_conditions.empty? && @run_breaking_conditions.empty?
    raise ArgumentError, "no stop conditions nor block specified"
  end

  sleep_with_watching_threads = ->(){
    if @instance.respond_to?(:_threads)
      @instance._threads.values.each{|t| t.join(0) }
    end
    sleep 0.1
  }

  begin
    retval = run_actual(timeout: timeout, &block)
    sleep_with_watching_threads.call until stop?
    retval
  ensure
    instance_shutdown if shutdown
  end
end

#run_actual(timeout: DEFAULT_TIMEOUT, &block) ⇒ Object 



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# File 'lib/fluent/test/driver/base.rb', line 182

def run_actual(timeout: DEFAULT_TIMEOUT, &block)
  if @instance.respond_to?(:_threads)
    sleep 0.1 until @instance._threads.values.all?(&:alive?)
  end

  if @instance.respond_to?(:event_loop_running?)
    sleep 0.1 until @instance.event_loop_running?
  end

  if @instance.respond_to?(:_child_process_processes)
    sleep 0.1 until @instance._child_process_processes.values.all?{|pinfo| pinfo.alive }
  end

  return_value = nil
  begin
    Timeout.timeout(timeout * 2) do |sec|
      return_value = block.call if block_given?
    end
  rescue Timeout::Error
    raise TestTimedOut, "Test case timed out with hard limit."
  end
  return_value
end

#stop? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/test/driver/base.rb', line 206

def stop?
  # Should stop running if post conditions are not registered.
  return true unless @run_post_conditions || @run_post_conditions.empty?

  # Should stop running if all of the post conditions are true.
  return true if @run_post_conditions.all? {|proc| proc.call }

  # Should stop running if some of the breaking conditions is true.
  # In this case, some post conditions may be not true.
  if @run_breaking_conditions.any? {|proc| proc.call }
    @broken = true
    return true
  end

  false
end