Module: LogTool

Defined in:
lib/logtool.rb,
lib/logtool/block.rb,
lib/logtool/query.rb,
lib/logtool/parser.rb

Defined Under Namespace

Classes: Block, Parser, Query

Class Method Summary collapse

Class Method Details

.execute ⇒ Object 



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# File 'lib/logtool.rb', line 59

def self.execute
  options = parse_args
  blocks = Parser.parse_blocks(options[:input_file])

  case options[:mode]
  when 'query' then
    query = Query.new(blocks, options)
    query.run
  else puts "Mode not implemented"; exit 1
  end
end

.fatal_error(err_msg = nil) ⇒ Object 



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# File 'lib/logtool.rb', line 35

def self.fatal_error(err_msg=nil)
  puts err_msg if err_msg
  puts usage
  exit 1
end

.parse_args ⇒ Object 



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# File 'lib/logtool.rb', line 45

def self.parse_args
  fatal_error if ARGV.size < 2

  options = {}
  options[:input_file] = ARGV[0]
  options[:mode] = ARGV[1]
  options[:mode_args] = ARGV[2..-1]

  fatal_error("Invalid mode") unless self.supported_modes.include?(options[:mode])

  return options
end

.supported_modes ⇒ Object 



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# File 'lib/logtool.rb', line 41

def self.supported_modes
  %W(query)
end

.usage ⇒ Object 



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

def self.usage
<<USAGE
	Usage: logtool file mode mode_options

	File is the rails log file that should be parsed. Mode can be either gtk or query. For gtk, a window will open and let you explore the log file. For query, you can write a query that will be executed on the log entries.

	== Query mode ==
 When using the query mode, mode_options should be in the following format: filter information [options]. The first parameter filters the log entries, the second one is the information you want to retrieve. The last one is the only optional one, where you can specify further options.
 ==filter==
 Boolean Operators: and, or, not
 Value Operators ==, <=, >=, <, >
 Values: ip, method, response, asset

 ==information to retrieve==
 ip, head, tail, method, time

 ==options==
 -l num: shows only the last num entries.

 Examples:
 logtool log/production.log query "ip == 127.0.0.1" head
 logtool log/production.log query "(ip == 127.0.0.1) and not asset" head
 logtool log/production.log query "(ip == 127.0.0.1) or (ip == 0.0.0.0) and not asset" head
 logtool log/production.log query "response > 200" ip
USAGE
end