Class: MySlog

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

Instance Method Summary collapse

Instance Method Details

#divide(lines) ⇒ Object 



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# File 'lib/myslog.rb', line 8

def divide(lines)
  records = []

  line = lines.shift

  while line
    record = []

    while line != nil && line.start_with?("#")
      record << line.strip
      line = lines.shift
    end

    sql = []
    while line != nil && !line.start_with?("# Time") && !line.start_with?("# User@Host") && !line.start_with?("# Query_time")
      sql << line.strip
      line = lines.shift
    end
    record << sql.join(" ")

    records << record
  end

  records
end

#parse(text) ⇒ Object 



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# File 'lib/myslog.rb', line 4

def parse(text)
  divide(text.split("\n")).map {|r| parse_record(r) }
end

#parse_record(records) ⇒ Object 



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# File 'lib/myslog.rb', line 34

def parse_record(records)
  response = {}

  while (record = records.shift) != nil

    if record.start_with? "# User@Host:"

      elems = record.split(/ /, 7)
      response[:user]    = elems[2].strip
      response[:host]    = elems[4].empty? ? nil : elems[4].strip
      response[:host_ip] = elems[5].strip[1...-1]
    elsif record.start_with? "#"

      elems = record[2..-1].strip().split " "
      if elems.size == 3 && elems[0] == "Time:"
        response[:date] = Time.parse(elems[1]+" "+elems[2])
      elsif elems.size == 2 && elems[0] == "Time:"
        response[:date] = Time.parse(elems[1][0..9]+" "+elems[1][11..18])
      else
        elems.each_with_index do |elem,i|
          if elem.include?(":") && !elems[i+1].include?(":")
            value = elems[i+1]
            case value
            when /^\d+$/
              value = value.to_i
            when /^\d+\.\d+(?:e[-+]\d+)?$/
              value = value.to_f
            end
            response[elem[0...-1].downcase.to_sym] = value
          end
        end
      end
    else
      if database = record.match(/^use ([^;]+)/)
        response[:db] = database[1]
      end

      if timestamp = record.match(/SET timestamp=(\d+)/)
        response[:date] = Time.at(timestamp[1].to_i)
      end

      response[:sql] = record
    end
  end

  response
end