Class: Grok::Pile

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

Overview

A grok pile is an easy way to have multiple patterns together so that you can try to match against each one. The API provided should be similar to the normal Grok interface, but you can compile multiple patterns and match will try each one until a match is found.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Pile

Returns a new instance of Pile.



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# File 'lib/grok/pile.rb', line 9

def initialize
  @groks = []
  @patterns = {}
  @pattern_files = []
end

Instance Method Details

#add_pattern(name, string) ⇒ Object

see Grok#add_pattern



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# File 'lib/grok/pile.rb', line 16

def add_pattern(name, string)
  @patterns[name] = string
end

#add_patterns_from_file(path) ⇒ Object

see Grok#add_patterns_from_file



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# File 'lib/grok/pile.rb', line 21

def add_patterns_from_file(path)
  if !File.exists?(path)
    raise "File does not exist: #{path}"
  end
  @pattern_files << path
end

#compile(pattern) ⇒ Object

see Grok#compile



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# File 'lib/grok/pile.rb', line 29

def compile(pattern)
  grok = Grok.new
  @patterns.each do |name, value|
    grok.add_patterne(name, value)
  end
  @pattern_files.each do |path|
    grok.add_patterns_from_file(path)
  end
  grok.compile(pattern)
  @groks << grok
end

#match(string) ⇒ Object

Slight difference from Grok#match in that it returns the Grok instance that matched successfully in addition to the GrokMatch result. See also: Grok#match



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# File 'lib/grok/pile.rb', line 45

def match(string)
  @groks.each do |grok|
    match = grok.match(string)
    #puts "Trying #{grok.pattern} against #{string}"
    if match
      return [grok, match]
    end
  end
  return false
end