Class: Racknga::LogDatabase — racknga - Ranguba

Class: Racknga::LogDatabase

Inherits:
Object
  • Object
show all
Defined in:
lib/racknga/log_database.rb

Overview

This is a log database based on groonga. It is used by Racknga::Middleware::Log.

Normally, #purge_old_responses is only used for log maintenance.

Instance Method Summary (collapse)

Constructor Details

- (LogDatabase) initialize(database_path)

A new instance of LogDatabase

Parameters:

  • database_path (String) —

    the path for log database.



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# File 'lib/racknga/log_database.rb', line 31

def initialize(database_path)
  @database_path = database_path
  @context = Groonga::Context.new(:encoding => :none)
  ensure_database
end

Instance Method Details

- (Object) close_database 



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# File 'lib/racknga/log_database.rb', line 50

def close_database
  @database.close
end

- (Object) ensure_database 



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# File 'lib/racknga/log_database.rb', line 41

def ensure_database
  if File.exist?(@database_path)
    @database = Groonga::Database.open(@database_path, :context => @context)
  else
    create_database
  end
  ensure_tables
end

- (Object) entries 



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# File 'lib/racknga/log_database.rb', line 37

def entries
  @entries ||= @context["Entries"]
end

- (Object) purge_old_entries(base_time = nil)

Purges old responses. To clear old logs, you should call this method. All records created before base_time are removed.

You can call this method by the different process from your Rack application process. (e.g. cron.) It’s multi process safe.

removed. The default value is 1 day ago.

Parameters:

  • base_time (Time) (defaults to: nil) —

    the oldest record time to be



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# File 'lib/racknga/log_database.rb', line 64

def purge_old_entries(base_time=nil)
  base_time ||= Time.now - 60 * 60 * 24
  target_entries = entries.select do |record|
    record.time_stamp < base_time
  end
  target_entries.each do |entry|
    entry.key.delete
  end
end