Class: Roma::KeyAccess

Inherits:
Object
  • Object
show all
Defined in:
lib/roma/tools/key_access.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ KeyAccess

Returns a new instance of KeyAccess.



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# File 'lib/roma/tools/key_access.rb', line 14

def initialize(argv)
  options(argv)
  
  each_hash(@path){|hname, dir|
    puts "hash : #{hname}"
    st = open_storage(dir)

    vn, last, clk, expt, value = st.get_raw2(@key)
    if vn
      if @sv
        puts "vnode: #{vn}"
        puts "last : #{Time.at(last)}"
        puts "clock: #{clk}"
        puts "expt : #{Time.at(expt)}"
        begin
          puts "value #{Marshal.load(value)}"
        rescue
          puts "value: #{value}"
        end
      else
        puts "exist"
      end
      st.closedb
      return
    end

    st.closedb
  }
  puts "not exist"
end

Instance Method Details

#each_hash(path) ⇒ Object 



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# File 'lib/roma/tools/key_access.rb', line 61

def each_hash(path)
  Dir::glob("#{path}/*").each{|dir|
    next unless File::directory?(dir)
    hname = dir[dir.rindex('/')+1..-1]
    yield hname,dir
  }     
end

#new_storage(ext) ⇒ Object 



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# File 'lib/roma/tools/key_access.rb', line 88

def new_storage(ext)
  case(ext)
  when 'tc'
    return ::Roma::Storage::TCStorage.new
  when 'dbm'
    return Roma::Storage::DbmStorage.new
  when 'sql3'
    return Roma::Storage::SQLite3Storage.new
  else
    return nil
  end
end

#open_storage(path) ⇒ Object 



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# File 'lib/roma/tools/key_access.rb', line 69

def open_storage(path)
  unless File::directory?(path)
    STDERR.puts "#{path} does not found."
    return nil
  end

  # get a file extension
  ext = File::extname(Dir::glob("#{path}/0.*")[0])[1..-1]
  # count a number of divided files
  divnum = Dir::glob("#{path}/*.#{ext}").length
    
  st = new_storage(ext)
  st.divnum = divnum
  st.vn_list = []
  st.storage_path = path
  st.opendb
  st
end

#options(argv) ⇒ Object 



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# File 'lib/roma/tools/key_access.rb', line 45

def options(argv)
  opts = OptionParser.new
  opts.banner="usage:#{File.basename($0)} storage-path key"
  
  @sv = false
  opts.on("-v","--value","show value") { |v| @sv = true }

  opts.parse!(argv)
  raise OptionParser::ParseError.new if argv.length < 2
  @path = argv[0]
  @key = argv[1]
rescue OptionParser::ParseError => e
  STDERR.puts opts.help
  exit 1
end