Class: Mysqlknife::Replica

Inherits:
Object
  • Object
show all
Defined in:
lib/mysqlknife/replica.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Replica

Returns a new instance of Replica.



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# File 'lib/mysqlknife/replica.rb', line 5

def initialize(options = {})
  @conn   = Connection.new(options)
  @sql    = Sql.new
  @behind = options[:behind]
end

Instance Method Details

#check_status_negative(behind) ⇒ Object 



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# File 'lib/mysqlknife/replica.rb', line 11

def check_status_negative(behind)
  @behind < 0 && behind < 0 && behind <= @behind && behind != 0
end

#check_status_positive(behind) ⇒ Object 



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# File 'lib/mysqlknife/replica.rb', line 15

def check_status_positive(behind)
  @behind > 0 && behind > 0 && @behind <= behind && behind != 0
end

#skip ⇒ Object 



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# File 'lib/mysqlknife/replica.rb', line 19

def skip
  procedure_name  = @sql.show_procedure('rds_skip_repl_error')
  exist_procedure = @conn.execute(procedure_name).first
  slave_status    = @conn.execute(@sql.slave_status).first

  return nil if slave_status.nil?
  return nil unless slave_status.include? 'Seconds_Behind_Master'

  if check_status_negative(slave_status['Seconds_Behind_Master'])
    puts %W(#{Time.now.getutc} : MySQL Skip error replica -
            #{slave_status.map { |k, v| "#{k}: #{v}" }.join(', ')}
            ).join(' ')
    if exist_procedure.nil?
      @conn.execute(@sql.mysql_skip_repl_error)
      while @conn.next_result
        message = @conn.store_result
        puts %W(#{Time.now.getutc} : MySQL Skip error replica -
                Message: #{message}).join(' ')
        sleep(1)
      end
    else
      message = @conn.execute(@sql.rds_skip_repl_error).first['Message']
      puts %W(#{Time.now.getutc} : MySQL Skip error replica -
              Message: #{message}).join(' ')
    end
  # Resolv Positive Lag:
  elsif check_status_positive(slave_status['Seconds_Behind_Master'])
    puts %W(#{Time.now.getutc} : MySQL Skip error replica -
            Not implemented.).join(' ')
  end
end