Class: Fluent::TailInput::PositionFile

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/plugin/in_tail.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, map, last_pos) ⇒ PositionFile

Returns a new instance of PositionFile.



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# File 'lib/fluent/plugin/in_tail.rb', line 1222

def initialize(file, map, last_pos)
  @file = file
  @map = map
  @last_pos = last_pos
end

Class Method Details

.parse(file) ⇒ Object 



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# File 'lib/fluent/plugin/in_tail.rb', line 1243

def self.parse(file)
  map = {}
  file.pos = 0
  file.each_line {|line|
    m = /^([^\t]+)\t([0-9a-fA-F]+)\t([0-9a-fA-F]+)/.match(line)
    next unless m
    path = m[1]
    pos = m[2].to_i(16)
    ino = m[3].to_i(16)
    seek = file.pos - line.bytesize + path.bytesize + 1
    map[path] = FilePositionEntry.new(file, seek)
  }
  new(file, map, file.pos)
end

Instance Method Details

#[](path) ⇒ Object 



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# File 'lib/fluent/plugin/in_tail.rb', line 1228

def [](path)
  if m = @map[path]
    return m
  end

  @file.pos = @last_pos
  @file.write path
  @file.write "\t"
  seek = @file.pos
  @file.write "0000000000000000\t00000000\n"
  @last_pos = @file.pos

  @map[path] = FilePositionEntry.new(@file, seek)
end