Class: Embulk::Input::GoogleAnalytics::Plugin

Inherits:
InputPlugin
  • Object
show all
Defined in:
lib/embulk/input/google_analytics/plugin.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.canonicalize_column_name(name) ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 74

def self.canonicalize_column_name(name)
  # ga:dateHour -> date_hour
  name.gsub(/^ga:/, "").gsub(/[A-Z]+/, "_\\0").gsub(/^_/, "").downcase
end

.columns_from_task(task) ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 66

def self.columns_from_task(task)
  [
    task["time_series"],
    task["dimensions"],
    task["metrics"],
  ].flatten.uniq
end

.resume(task, columns, count, &control) ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 42

def self.resume(task, columns, count, &control)
  task_reports = yield(task, columns, count)

  next_config_diff = task_reports.first
  return next_config_diff
end

.task_from_config(config) ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 49

def self.task_from_config(config)
  json_key_content = config.param("json_key_content", :string)
  {
    "json_key_content" => json_key_content,
    "view_id" => config.param("view_id", :string),
    "dimensions" => config.param("dimensions", :array, default: []),
    "metrics" => config.param("metrics", :array, default: []),
    "time_series" => config.param("time_series", :string),
    "start_date" => config.param("start_date", :string, default: nil),
    "end_date" => config.param("end_date", :string, default: nil),
    "incremental" => config.param("incremental", :bool, default: true),
    "last_record_time" => config.param("last_record_time", :string, default: nil),
    "retry_limit" => config.param("retry_limit", :integer, default: 5),
    "retry_initial_wait_sec" => config.param("retry_initial_wait_sec", :integer, default: 2),
  }
end

.transaction(config, &control) ⇒ Object

developers.google.com/analytics/devguides/reporting/core/dimsmets



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 9

def self.transaction(config, &control)
  task = task_from_config(config)
  unless %w(ga:date ga:dateHour).include?(task["time_series"])
    raise ConfigError.new("Unknown time_series '#{task["time_series"]}'. Use 'ga:dateHour' or 'ga:date'")
  end
  columns_list = Client.new(task).get_columns_list

  columns = columns_from_task(task).map do |col_name|
    col_info = columns_list.find{|col| col[:id] == col_name}
    raise ConfigError.new("Unknown metric/dimension '#{col_name}'") unless col_info

    col_type = 
      case col_info[:attributes][:dataType]
      when "STRING"
        :string
      when "INTEGER"
        :long
      when "PERCENT", "FLOAT", "CURRENCY"
        :double
      when "TIME"
        :timestamp
      end

    # time_series column should be timestamp
    if col_name == task["time_series"]
      col_type = :timestamp
    end
    Column.new(nil, canonicalize_column_name(col_name), col_type)
  end

  resume(task, columns, 1, &control)
end

Instance Method Details

#calculate_next_times(fetched_latest_time) ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 116

def calculate_next_times(fetched_latest_time)
  task_report = {}

  if fetched_latest_time
    task_report[:start_date] = fetched_latest_time.strftime("%Y-%m-%d")

    # if end_date specified as statically YYYY-MM-DD, it will be conflict with start_date (end_date < start_date)
    # Or when end_date is nil, only start_date will be filled on next run but it is illegal API request.
    # Modify end_date as "today" to be safe
    if task["end_date"].nil? || task["end_date"].match(/[0-9]{4}-[0-9]{2}-[0-9]{2}/)
      task_report[:end_date] = "today" # "today" means now. running at 03:30 AM, will got 3 o'clock data.
    end

    # "start_date" format is YYYY-MM-DD, but ga:dateHour will return records by hourly.
    # If run at 2016-07-03 05:00:00, start_date will set "2016-07-03" and got records until 2016-07-03 05:00:00.
    # Then next run at 2016-07-04 05:00, will got records between 2016-07-03 00:00:00 and 2016-07-04 05:00:00.
    # It will evantually duplicated between 2016-07-03 00:00:00 and 2016-07-03 05:00:00
    #
    #           Date|        2016-07-03      |   2016-07-04
    #           Hour|    5                   |    5
    # 1st run ------|----|                   |
    # 2nd run       |------------------------|-----
    #               ^^^^^ duplicated
    #
    # "last_record_time" option solves that problem
    #
    #           Date|        2016-07-03      |   2016-07-04
    #           Hour|    5                   |    5
    # 1st run ------|----|                   |
    # 2nd run       #####|-------------------|-----
    #               ^^^^^ ignored (skipped)
    #
    task_report[:last_record_time] = fetched_latest_time.strftime("%Y-%m-%d %H:%M:%S %z")
  else
    # no records fetched, don't modify config_diff
    task_report = {
      start_date: task["start_date"],
      end_date: task["end_date"],
      last_record_time: task["last_record_time"],
    }
  end

  task_report
end

#init ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 79

def init
end

#preview? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/embulk/input/google_analytics/plugin.rb', line 110

def preview?
  org.embulk.spi.Exec.isPreview()
rescue java.lang.NullPointerException
  false
end

#run ⇒ Object 



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# File 'lib/embulk/input/google_analytics/plugin.rb', line 82

def run
  client = Client.new(task, preview?)
  columns = self.class.columns_from_task(task)

  last_record_time = task["last_record_time"] ? Time.parse(task["last_record_time"]) : nil

  latest_time_series = nil
  client.each_report_row do |row|
    time = row[task["time_series"]]
    next if last_record_time && time <= last_record_time

    values = row.values_at(*columns)
    page_builder.add values

    latest_time_series = [
      latest_time_series,
      time,
    ].compact.max
  end
  page_builder.finish

  if task["incremental"]
    calculate_next_times(latest_time_series)
  else
    {}
  end
end