Class: Pf2::Reporter::FirefoxProfilerSer2

Inherits:
Object
  • Object
show all
Defined in:
lib/pf2/reporter/firefox_profiler_ser2.rb

Overview

Generates Firefox Profiler’s “processed profile format” github.com/firefox-devtools/profiler/blob/main/docs-developer/processed-profile-format.md

Defined Under Namespace

Classes: ThreadReport

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(profile) ⇒ FirefoxProfilerSer2

Returns a new instance of FirefoxProfilerSer2.



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# File 'lib/pf2/reporter/firefox_profiler_ser2.rb', line 10

def initialize(profile)
  @profile = profile
end

Class Method Details

.deep_camelize_keys(value) ⇒ Object 



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# File 'lib/pf2/reporter/firefox_profiler_ser2.rb', line 300

def deep_camelize_keys(value)
  deep_transform_keys(value) do |key|
    snake_to_camel(key.to_s).to_sym
  end
end

.deep_transform_keys(value, &block) ⇒ Object 



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# File 'lib/pf2/reporter/firefox_profiler_ser2.rb', line 289

def deep_transform_keys(value, &block)
  case value
  when Array
    value.map {|v| deep_transform_keys(v, &block) }
  when Hash
    Hash[value.map {|k, v| [yield(k), deep_transform_keys(v, &block)] }]
  else
    value
  end
end

.snake_to_camel(s) ⇒ Object 



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# File 'lib/pf2/reporter/firefox_profiler_ser2.rb', line 282

def snake_to_camel(s)
  return "isJS" if s == "is_js"
  return "relevantForJS" if s == "relevant_for_js"
  return "innerWindowID" if s == "inner_window_id"
  s.split('_').inject([]) {|buffer, p| buffer.push(buffer.size == 0 ? p : p.capitalize) }.join
end

Instance Method Details

#emit ⇒ Object 



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# File 'lib/pf2/reporter/firefox_profiler_ser2.rb', line 18

def emit
  grouped_threads = @profile[:samples].group_by {|s| s[:ruby_thread_id] }
  thread_reports = grouped_threads.map do |thread_id, samples|
    ThreadReport.new(@profile, thread_id, samples).emit
  end

  report = {
    meta: {
      interval: 10, # ms; TODO: replace with actual interval
      start_time: 0,
      process_type: 0,
      product: 'ruby',
      stackwalk: 0,
      version: 28,
      preprocessed_profile_version: 47,
      symbolicated: true,
      categories: [
        {
          name: "Logs",
          color: "grey",
          subcategories: ["Unused"],
        },
        {
          name: "Ruby",
          color: "red",
          subcategories: ["Code"],
        },
        {
          name: "Native",
          color: "blue",
          subcategories: ["Code"],
        },
        {
          name: "Native",
          color: "lightblue",
          subcategories: ["Code"],
        },
      ],
      marker_schema: [],
    },
    libs: [],
    counters: [],
    threads: thread_reports,
  }
  FirefoxProfiler.deep_camelize_keys(report)
end

#inspect ⇒ Object 



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# File 'lib/pf2/reporter/firefox_profiler_ser2.rb', line 14

def inspect
  "#<#{self.class.name} (#{@profile[:samples].length} samples)>"
end