Module: Rack::MiniProfiler::Actions

Included in:
Rack::MiniProfiler
Defined in:
lib/mini_profiler/actions.rb

Instance Method Summary collapse

Instance Method Details

#serve_file(env, file_name:) ⇒ Object 



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# File 'lib/mini_profiler/actions.rb', line 54

def serve_file(env, file_name:)
  resources_env = env.dup
  resources_env['PATH_INFO'] = file_name

  if Gem::Version.new(Rack.release) >= Gem::Version.new("2.1.0")
    rack_file = Rack::Files.new(resources_root, 'Cache-Control' => "max-age=#{cache_control_value}")
  else
    rack_file = Rack::File.new(resources_root, 'Cache-Control' => "max-age=#{cache_control_value}")
  end

  rack_file.call(resources_env)
end

#serve_flamegraph(env) ⇒ Object 



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# File 'lib/mini_profiler/actions.rb', line 104

def serve_flamegraph(env)
  request     = Rack::Request.new(env)
  id          = request.params['id']
  page_struct = @storage.load(id)

  if !page_struct
    id        = ERB::Util.html_escape(id)
     = ERB::Util.html_escape(user(env))
    return [404, {}, ["Request not found: #{id} - user #{}"]]
  end

  if !page_struct[:flamegraph]
    return [404, {}, ["No flamegraph available for #{ERB::Util.html_escape(id)}"]]
  end

  self.flamegraph(page_struct[:flamegraph], page_struct[:request_path], env)
end

#serve_profile_gc(env, client_settings) ⇒ Object 



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# File 'lib/mini_profiler/actions.rb', line 122

def serve_profile_gc(env, client_settings)
  return tool_disabled_message(client_settings) if !advanced_debugging_enabled?

  client_settings.handle_cookie(Rack::MiniProfiler::GCProfiler.new.profile_gc(@app, env))
end

#serve_profile_memory(env, client_settings) ⇒ Object 



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# File 'lib/mini_profiler/actions.rb', line 128

def serve_profile_memory(env, client_settings)
  return tool_disabled_message(client_settings) if !advanced_debugging_enabled?

  unless defined?(MemoryProfiler) && MemoryProfiler.respond_to?(:report)
    message = "Please install the memory_profiler gem and require it: add gem 'memory_profiler' to your Gemfile"
    status, headers, body = @app.call(env)
    body.close if body.respond_to? :close

    return client_settings.handle_cookie(
      text_result(message, status: 500, headers: headers)
    )
  end

  query_params = Rack::Utils.parse_nested_query(env['QUERY_STRING'])
  options = {
    ignore_files: query_params['memory_profiler_ignore_files'],
    allow_files: query_params['memory_profiler_allow_files'],
  }
  options[:top] = Integer(query_params['memory_profiler_top']) if query_params.key?('memory_profiler_top')
  result = StringIO.new
  report = MemoryProfiler.report(options) do
    _, _, body = @app.call(env)
    body.close if body.respond_to? :close
  end
  report.pretty_print(result)
  client_settings.handle_cookie(text_result(result.string))
end

#serve_results(env) ⇒ Object 



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# File 'lib/mini_profiler/actions.rb', line 67

def serve_results(env)
  request     = Rack::Request.new(env)
  id          = request.params['id']
  group_name  = request.params['group']
  is_snapshot = group_name && group_name.size > 0
  if is_snapshot
    page_struct = @storage.load_snapshot(id, group_name)
  else
    page_struct = @storage.load(id)
  end
  if !page_struct && is_snapshot
    id = ERB::Util.html_escape(id)
    return [404, {}, ["Snapshot with id '#{id}' not found"]]
  elsif !page_struct
    @storage.set_viewed(user(env), id)
    id        = ERB::Util.html_escape(id)
     = ERB::Util.html_escape(user(env))
    return [404, {}, ["Request not found: #{id} - user #{}"]]
  end
  if !page_struct[:has_user_viewed] && !is_snapshot
    page_struct[:client_timings]  = TimerStruct::Client.init_from_form_data(env, page_struct)
    page_struct[:has_user_viewed] = true
    @storage.save(page_struct)
    @storage.set_viewed(user(env), id)
  end

  # If we're an XMLHttpRequest, serve up the contents as JSON
  if request.xhr?
    result_json = page_struct.to_json
    [200, { 'Content-Type' => 'application/json' }, [result_json]]
  else
    # Otherwise give the HTML back
    html = generate_html(page_struct, env)
    [200, { 'Content-Type' => 'text/html' }, [html]]
  end
end

#serve_snapshot(env) ⇒ Object 



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# File 'lib/mini_profiler/actions.rb', line 5

def serve_snapshot(env)
  MiniProfiler.authorize_request
  status = 200
  headers = { 'Content-Type' => 'text/html' }
  qp = Rack::Utils.parse_nested_query(env['QUERY_STRING'])
  if group_name = qp["group_name"]
    list = @storage.snapshots_group(group_name)
    list.each do |snapshot|
      snapshot[:url] = url_for_snapshot(snapshot[:id], group_name)
    end
    data = {
      group_name: group_name,
      list: list
    }
  else
    list = @storage.snapshots_overview
    list.each do |group|
      group[:url] = url_for_snapshots_group(group[:name])
    end
    data = {
      page: "overview",
      list: list
    }
  end
  data_html = <<~HTML
    <div style="display: none;" id="snapshots-data">
    #{data.to_json}
    </div>
  HTML
  response = Rack::Response.new([], status, headers)

  response.write <<~HTML
    <!DOCTYPE html>
    <html>
      <head>
        <title>Rack::MiniProfiler Snapshots</title>
      </head>
      <body class="mp-snapshots">
  HTML
  response.write(data_html)
  script = self.get_profile_script(env)
  response.write(script)
  response.write <<~HTML
      </body>
    </html>
  HTML
  response.finish
end