Class: MongoProfiler::Profile

Inherits:
Object
  • Object
show all
Includes:
Mongoid::Document, Mongoid::Timestamps
Defined in:
lib/mongo_profiler/models/profile.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.register(started_at, database, collection, selector, options = {}) ⇒ Object 



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# File 'lib/mongo_profiler/models/profile.rb', line 47

def register(started_at, database, collection, selector, options = {})
  return if collection =~ /mongo_profiler/ || collection =~ /system/
  return if selector['$explain']

  _caller = MongoProfiler::Caller.new(caller)

  group = ProfileGroup.find_or_create_by(name: MongoProfiler.current_group_name)

  group.touch

  profile_md5 = generate_profile_md5(database, collection, selector, _caller)

  return if Profile.where(profile_md5: profile_md5, profile_group_id: group.id).any?

  result = {}
  result[:profile_md5]        = profile_md5
  result[:profile_group_id]   = group.id

  result[:total_time]         = elapsed(started_at)
  result[:command_database]   = database
  result[:command_collection] = collection
  result[:command]            = JSON.dump(selector)
  result[:file]               = _caller.file
  result[:line]               = _caller.line
  result[:method]             = _caller.method

  # TODO do it in background
  result[:explain] = JSON.dump(generate_explain(collection, selector))

  self.create(result)
end

Instance Method Details

#score ⇒ Object 



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# File 'lib/mongo_profiler/models/profile.rb', line 22

def score
  explain = JSON.parse(self.explain)

  n              = explain['n']
  ns_scanned     = explain['nscanned']
  cursor         = explain['cursor']
  scan_and_order = explain['scanAndOrder']

  case
  when cursor == 'BasicCursor'
    :no_index
  when n == 0
    :no_docs_found
  when ns_scanned == n
    :perfect
  when ns_scanned > n
    :scanned_more_than_returned
  when scan_and_order
    :had_to_order
  end
rescue => e
  e.message
end