Module: Deforest

Defined in:
lib/deforest.rb,
lib/deforest/engine.rb,
lib/deforest/version.rb,
app/models/deforest/log.rb,
app/helpers/deforest/logs_helper.rb,
app/helpers/deforest/application_helper.rb,
app/controllers/deforest/files_controller.rb,
app/controllers/deforest/application_controller.rb

Defined Under Namespace

Modules: ApplicationHelper, LogsHelper Classes: ApplicationController, Engine, FilesController, Log

Constant Summary collapse

VERSION = 
"1.1.1"

Class Method Summary collapse

Class Method Details

.get_app_classes(dir) ⇒ Object 



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# File 'lib/deforest.rb', line 9

def self.get_app_classes(dir)
  Dir["#{Rails.root}#{dir}/**/*.rb"].each do |f|
    idx = f.index(dir)
    models_heirarchy = f[idx..-1].gsub(dir,"")
    exec_str = models_heirarchy.split("/").map(&:camelize).join("::").chomp(".rb")
    begin
      model = exec_str.constantize
      yield model
    rescue
      puts "Deforest warning: could not track #{exec_str}"
    end
  end
end

.initialize! ⇒ Object 



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# File 'lib/deforest.rb', line 57

def self.initialize!
  if block_given?
    yield self
  end
  self.initialize_db_sync_file()
  Deforest.track_dirs.each do |dir|
    self.get_app_classes(dir) do |klass|
      if klass.present?
        klass.prepend(Deforest.inject_tracking_module(klass, dir, 'instance'))
        klass.singleton_class.prepend(Deforest.inject_tracking_module(klass, dir, 'class'))
      end
    end
  end
end

.initialize_db_sync_file ⇒ Object 



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# File 'lib/deforest.rb', line 72

def self.initialize_db_sync_file
  File.open("deforest.#{Process.pid}.log", "w") unless File.exist?("deforest.#{Process.pid}.log")
  if File.exist?("deforest_db_sync.#{Process.pid}.txt")
    Deforest.last_saved_log_file_at = Time.at(File.open("deforest_db_sync.#{Process.pid}.txt").read.to_i)
  else
    File.open("deforest_db_sync.#{Process.pid}.txt", "w") do |f|
      current_time = Time.zone.now
      Deforest.last_saved_log_file_at = current_time
      f.write(current_time.to_i)
    end
  end
end

.inject_tracking_module(klass, dir, method_type) ⇒ Object 



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# File 'lib/deforest.rb', line 23

def self.inject_tracking_module(klass, dir, method_type)
  track_methods = if method_type == 'instance'
    klass.instance_methods(false)
  elsif method_type == 'class'
    klass.singleton_methods(false)
  else
    raise "Unknown method type: #{method_type}"
  end
  Module.new do
    track_methods.each do |mname|
      method_location = if method_type == 'instance'
        klass.instance_method(mname).source_location
      else
        klass.singleton_method(mname).source_location
      end
      if method_location.first.ends_with?("#{klass.to_s.underscore}.rb")
        define_method mname do |*args, &block|
          file_name, line_no = method_location
          if file_name.include?(dir)
            Deforest.insert_into_logs(mname, file_name, line_no)
          end
          if Deforest.last_saved_log_file_at < Deforest.write_logs_to_db_every.ago && !Deforest.saving_log_file
            Deforest.parse_and_save_log_file()
            t = Time.zone.now
            Deforest.last_saved_log_file_at = t
            File.open("deforest_db_sync.#{Process.pid}.txt", "w") { |fl| fl.write(t.to_i) }
          end
          super(*args, &block)
        end
      end
    end
  end
end

.insert_into_logs(method_name, file_name, line_no) ⇒ Object 



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# File 'lib/deforest.rb', line 85

def self.insert_into_logs(method_name, file_name, line_no)
  key = "#{file_name}|#{line_no}|#{method_name}\n"
  log_file_name = Deforest.saving_log_file ? "deforest_tmp.#{Process.pid}.log" : "deforest.#{Process.pid}.log"
  File.open(log_file_name, "a") do |f|
    f.write(key)
  end
end

.least_used_methods(dir, size = 1) ⇒ Object 



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# File 'lib/deforest.rb', line 138

def self.least_used_methods(dir, size=1)
  if size == nil
    self.most_used_methods(dir, nil).reverse
  else
    self.most_used_methods(dir, nil).reverse.take(size)
  end
end

.most_used_methods(dir, size = 1) ⇒ Object 



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# File 'lib/deforest.rb', line 123

def self.most_used_methods(dir, size=1)
  query = Deforest::Log.group(:file_name, :line_no, :method_name)
  if dir.present?
    query = query.where("file_name like '%#{dir}/%'")
  end
  res = query.pluck("file_name, line_no, method_name, SUM(count)")
            .sort_by { |fname, lno, method, cnt| cnt }
            .reverse
  if size == nil
    return res
  else
    return res.take(size)
  end
end

.parse_and_save_log_file ⇒ Object 



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# File 'lib/deforest.rb', line 93

def self.parse_and_save_log_file
  Deforest.saving_log_file = true
  sql_stmt = "INSERT INTO deforest_logs (file_name, line_no, method_name, count, created_at, updated_at) VALUES "
  hash = {}
  File.foreach("deforest.#{Process.pid}.log") do |line|
    line = line.chomp("\n")
    if hash.has_key?(line)
      hash[line] += 1
    else
      hash[line] = 1
    end
  end
  hash.each do |loc, count|
    t = Time.zone.now
    sql_stmt += "(#{loc.split("|").map { |s| "'#{s}'" }.join(",")}, #{count}, '#{t}', '#{t}'),"
  end
  sql_stmt.chomp!(",")
  sql_stmt += ";"
  if hash.present?
    ActiveRecord::Base.connection.execute(sql_stmt)
    if File.exist?("deforest_tmp.#{Process.pid}.log")
      File.delete("deforest.#{Process.pid}.log")
      File.rename("deforest_tmp.#{Process.pid}.log", "deforest.#{Process.pid}.log")
    else
      File.delete("deforest.#{Process.pid}.log")
    end
  end
  Deforest.saving_log_file = false
end