Module: Roma::CommandPlugin::PluginAshiatoList

Includes:
Roma::CommandPlugin
Defined in:
lib/roma/plugin/plugin_alist.rb

Instance Method Summary collapse

Methods included from Roma::CommandPlugin

included, plugins

Instance Method Details

#ev_alist_at(s) ⇒ Object

alist_at <key> <index> [forward]rn

( [VALUE <key> 0 <value length>rn <value>rn] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 18

def ev_alist_at(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s)  if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1
  if ddata
    v = Marshal.load(ddata)[0]
    return send_data("END\r\n") if v.length <= s[2].to_i
    ret = v.at(s[2].to_i)
    ret = "" unless ret
    return send_data("VALUE #{s[1]} 0 #{ret.length}\r\n#{ret}\r\nEND\r\n")
  else
    return send_data("END\r\n")
  end        
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_clear(s) ⇒ Object

alist_clear <key> [forward]rn

(CLEARED|NOT_CLEARED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 42

def ev_alist_clear(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward2(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  return send_data("NOT_FOUND\r\n") unless ddata

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump([[],[]]))
  @stats.delete_count += 1


  if ret
    if @stats.wb_command_map.key?(:alist_clear)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_clear], k, ddata)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("CLEARED\r\n")
  else
    send_data("NOT_CLEARED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_delete(s) ⇒ Object

alist_delete <key> <bytes> [forward]rn <data block>rn

(DELETED|NOT_DELETED|NOT_FOUND|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 73

def ev_alist_delete(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid
  
  ddata = @storages[hname].get(vn, k, d)
  return send_data("NOT_FOUND\r\n") unless ddata

  v = Marshal.load(ddata)
  return send_data("NOT_DELETED\r\n") unless v[0].include?(data)
  while(idx = v[0].index(data))
    v[0].delete_at(idx)
    v[1].delete_at(idx)
  end

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.delete_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_delete)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_delete], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("DELETED\r\n")
  else
    send_data("NOT_DELETED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_delete_and_prepend(s) ⇒ Object 



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# File 'lib/roma/plugin/plugin_alist.rb', line 424

def ev_alist_delete_and_prepend(s); ev_alist_swap_and_insert(s); end

#ev_alist_delete_at(s) ⇒ Object

alist_delete_at <key> <index> [forward]rn

(DELETED|NOT_DELETED|NOT_FOUND|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 111

def ev_alist_delete_at(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward2(nodes[0], s) if nodes[0] != @nid
  
  ddata = @storages[hname].get(vn, k, d)
  return send_data("NOT_FOUND\r\n") unless ddata

  v = Marshal.load(ddata)
  dret = v[0].delete_at(s[2].to_i)
  return send_data("NOT_DELETED\r\n") unless dret
  v[1].delete_at(s[2].to_i)

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.delete_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_delete_at)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_delete_at], k, dret)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("DELETED\r\n")
  else
    send_data("NOT_DELETED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("${e} #{$@}")
end

#ev_alist_empty?(s) ⇒ Boolean

alist_empty? <key> [forward]rn

(true|false|NOT_FOUND|SERVER_ERROR <error message>)rn

Returns:

  • (Boolean) 


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# File 'lib/roma/plugin/plugin_alist.rb', line 145

def ev_alist_empty?(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward2(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1

  return send_data("NOT_FOUND\r\n") unless ddata
  
  v = Marshal.load(ddata)
  ret = v[0].empty?
  
  send_data("#{ret}\r\n")
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_expired_swap_and_insert(s) ⇒ Object

alist_expired_swap_and_insert <key> <expire-time> <bytes> [forward]rn <data block>rn

the data expire-time’s ago will be deleated. the unit of the expire-time’s is a second. however,as follows when there is a suffix. ‘h’ as expire-time suffix is hour. ‘d’ as expire-time suffix is day.

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 528

def ev_alist_expired_swap_and_insert(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  et = expired_str_to_i(s[2])
  return send_data("SERVER_ERROR format error in expire-time.\r\n") unless et

  v = to_alist_value_for_write(hname, vn, k, d)
  unless v
    return send_data("SERVER_ERROR data other than alist's format already exist.\r\n")
  end

# @log.debug("#{s[2]} et=#{et}")
  v = expired_swap(v, data, et)

  v[0].insert(0,data)
  v[1].insert(0,Time.now.to_i)

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_expired_swap_and_insert)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_expired_swap_and_insert], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_expired_swap_and_push(s) ⇒ Object

alist_expired_swap_and_push <key> <expire-time> <bytes> [forward]rn <data block>rn

the data expire-time’s ago will be deleated. the unit of the expire-time’s is a second. however,as follows when there is a suffix. ‘h’ as expire-time suffix is hour. ‘d’ as expire-time suffix is day.

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 1030

def ev_alist_expired_swap_and_push(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  et = expired_str_to_i(s[2])
  return send_data("SERVER_ERROR format error in expire-time.\r\n") unless et

  v = to_alist_value_for_write(hname, vn, k, d)
  unless v
    return send_data("SERVER_ERROR data other than alist's format already exist.\r\n")
  end

# @log.debug("#{s[2]} et=#{et}")
  v = expired_swap(v, data, et)

  v[0].push(data)
  v[1].push(Time.now.to_i)

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_expired_swap_and_push)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_expired_swap_and_push], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_expired_swap_and_sized_insert(s) ⇒ Object

alist_expired_swap_and_sized_insert <key> <expire-time> <array-size> <bytes> [forward]rn <data block>rn

the data expire-time’s ago will be deleated. the unit of the expire-time’s is a second. however,as follows when there is a suffix. ‘h’ as expire-time suffix is hour. ‘d’ as expire-time suffix is day.

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 577

def ev_alist_expired_swap_and_sized_insert(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[4].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  et = expired_str_to_i(s[2])
  return send_data("SERVER_ERROR format error in expire-time.\r\n") unless et

  v = to_alist_value_for_write(hname, vn, k, d)
  unless v
    return send_data("SERVER_ERROR data other than alist's format already exist.\r\n")
  end

# @log.debug("#{s[2]} et=#{et}")
  v = expired_swap(v, data, et)

  v[0].insert(0,data)
  v[0] = v[0][0..(s[3].to_i - 1)]
  v[1].insert(0,Time.now.to_i)
  v[1] = v[1][0..(s[3].to_i - 1)]

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_expired_swap_and_sized_insert)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_expired_swap_and_sized_insert], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_expired_swap_and_sized_push(s) ⇒ Object

alist_expired_swap_and_sized_push <key> <expire-time> <array-size> <bytes> [forward]rn <data block>rn

the data expire-time’s ago will be deleated. the unit of the expire-time’s is a second. however,as follows when there is a suffix. ‘h’ as expire-time suffix is hour. ‘d’ as expire-time suffix is day.

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 1079

def ev_alist_expired_swap_and_sized_push(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[4].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  et = expired_str_to_i(s[2])
  return send_data("SERVER_ERROR format error in expire-time.\r\n") unless et

  v = to_alist_value_for_write(hname, vn, k, d)
  unless v
    return send_data("SERVER_ERROR data other than alist's format already exist.\r\n")
  end

# @log.debug("#{s[2]} et=#{et}")
  v = expired_swap(v, data, et)

  max = s[3].to_i
  return send_data("NOT_PUSHED\r\n") if v[0].length >= max

  v[0].push(data)
  v[0] = v[0][0..(max - 1)]
  v[1].push(Time.now.to_i)
  v[1] = v[1][0..(max - 1)]

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_expired_swap_and_sized_push)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_expired_swap_and_sized_push], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_first(s) ⇒ Object

alist_first <key> [forward]rn

( [VALUE <key> 0 <value length>rn <value>rn] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 171

def ev_alist_first(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1

  if ddata
    v = Marshal.load(ddata)[0]
    return send_data("END\r\n") if v.length == 0
    ret = v.first
    return send_data("VALUE #{s[1]} 0 #{ret.length}\r\n#{ret}\r\nEND\r\n")
  else
    return send_data("END\r\n")
  end        
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_gets(s) ⇒ Object

alist_gets <key> [index|range] [forward]rn

( [VALUE <key> 0 <length of length string>rn <length string>rn (VALUE <key> 0 <value length>rn <value>rn)* ] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 202

def ev_alist_gets(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, 0)
  @stats.read_count += 1

  if ddata
    v = Marshal.load(ddata)[0]
    if /(?:^(\d+)$|^(\d+)..((?:-)?\d+)$)/ =~ s[2]
      if $1
        if v.length <= $1.to_i
          return send_data("END\r\n")
        end
        buf = v[Range.new($1.to_i,$1.to_i)]
      else
        buf = v[Range.new($2.to_i,$3.to_i)]
      end
    else
      buf = v
    end
    len = v.length
    send_data("VALUE #{s[1]} 0 #{len.to_s.length}\r\n#{len.to_s}\r\n")
    buf.each{|val|
      send_data("VALUE #{s[1]} 0 #{val.length}\r\n#{val}\r\n")
    }
    return send_data("END\r\n")
  else
    return send_data("END\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_gets_with_time(s) ⇒ Object

alist_gets_with_time <key> [index|range] [forward]rn

( [VALUE <key> 0 <length of length string>rn <length string>rn (VALUE <key> 0 <value length>rn <value string>rn VALUE <key> 0 <value length>rn <time string>rn)* ] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 250

def ev_alist_gets_with_time(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, 0)
  @stats.read_count += 1

  if ddata
    v = Marshal.load(ddata)
    if /(?:^(\d+)$|^(\d+)..((?:-)?\d+)$)/ =~ s[2]
      if $1
        if v[0].length <= $1.to_i
          return send_data("END\r\n")
        end
        v_buf = v[0][Range.new($1.to_i,$1.to_i)]
        t_buf = v[1][Range.new($1.to_i,$1.to_i)]
      else
        v_buf = v[0][Range.new($2.to_i,$3.to_i)]
        t_buf = v[1][Range.new($2.to_i,$3.to_i)]
      end
    else
      v_buf = v[0]
      t_buf = v[1]
    end
    len = v[0].length
    send_data("VALUE #{s[1]} 0 #{len.to_s.length}\r\n#{len.to_s}\r\n")
    v_buf.each_with_index{|val,idx|
      send_data("VALUE #{s[1]} 0 #{val.length}\r\n#{val}\r\n")
      send_data("VALUE #{s[1]} 0 #{t_buf[idx].to_s.length}\r\n#{t_buf[idx]}\r\n")
    }
    return send_data("END\r\n")
  else
    return send_data("END\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_include?(s) ⇒ Boolean

alist_include? <key> <bytes> [forward]rn <data block>rn

(true|false|NOT_FOUND|SERVER_ERROR <error message>)rn

Returns:

  • (Boolean) 


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# File 'lib/roma/plugin/plugin_alist.rb', line 295

def ev_alist_include?(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1

  return send_data("NOT_FOUND\r\n") unless ddata
  
  v = Marshal.load(ddata)[0]
  ret = v.include?(data)
  
  send_data("#{ret}\r\n")
rescue => e
  send_data("SERVER_ERROR #{e} #{$@}\r\n")
  @log.error("#{e} #{$@}") 
end

#ev_alist_index(s) ⇒ Object

alist_index <key> <bytes> [forward]rn <data block>rn

(<index>|nil|NOT_FOUND|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 319

def ev_alist_index(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1

  return send_data("NOT_FOUND\r\n") unless ddata
  
  v = Marshal.load(ddata)[0]
  ret = v.index(data)
  if ret
    send_data("#{ret}\r\n")
  else
    send_data("nil\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_insert(s) ⇒ Object

alist_insert <key> <index> <bytes> [forward]rn <data block>rn

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 347

def ev_alist_insert(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  v[0].insert(s[2].to_i,data)
  v[1].insert(s[2].to_i,Time.now.to_i)
  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_insert)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_insert], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_join(s) ⇒ Object

alist_join <key> <bytes> [index|range] [forward]rn <separator block>rn

( [VALUE <key> 0 <length of length string>rn <length string>rn VALUE <key> 0 <value length>rn <value>rn] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 681

def ev_alist_join(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward1(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, 0)
  @stats.read_count += 1

  if ddata
    v = Marshal.load(ddata)[0]
    if /(?:^(\d+)$|^(\d+)..((?:-)?\d+)$)/ =~ s[3]
      if $1
        if v.length <= $1.to_i
          return send_data("END\r\n")
        end
        buf = v[Range.new($1.to_i,$1.to_i)]
      else
        buf = v[Range.new($2.to_i,$3.to_i)]
      end
    else
      buf = v
    end
    len = v.length
    ret = buf.join(data)
    send_data("VALUE #{s[1]} 0 #{len.to_s.length}\r\n#{len.to_s}\r\n")
    return send_data("VALUE #{s[1]} 0 #{ret.length}\r\n#{ret}\r\nEND\r\n")
  else
    return send_data("END\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_join_with_time(s) ⇒ Object

alist_join_with_time <key> <bytes> [index|range] [forward]rn <separator block>rn

( [VALUE <key> 0 <length of length string>rn <length string>rn VALUE <key> 0 <value length>rn <value string>rn VALUE <key> 0 <value length>rn <time string>rn] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 631

def ev_alist_join_with_time(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward1(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, 0)
  @stats.read_count += 1
  if ddata
    v = Marshal.load(ddata)
    if /(?:^(\d+)$|^(\d+)..((?:-)?\d+)$)/ =~ s[3]
      if $1
        if v[0].length <= $1.to_i
          return send_data("END\r\n")
        end
        v_buf = v[0][Range.new($1.to_i,$1.to_i)]
        t_buf = v[1][Range.new($1.to_i,$1.to_i)]
      else
        v_buf = v[0][Range.new($2.to_i,$3.to_i)]
        t_buf = v[1][Range.new($2.to_i,$3.to_i)]
      end
    else
      v_buf = v[0]
      t_buf = v[1]
    end
    len = v[0].length
    v_ret = v_buf.join(data)
    t_ret = t_buf.join(data)
    send_data("VALUE #{s[1]} 0 #{len.to_s.length}\r\n#{len.to_s}\r\n")
    send_data("VALUE #{s[1]} 0 #{v_ret.length}\r\n#{v_ret}\r\n")
    return send_data("VALUE #{s[1]} 0 #{t_ret.length}\r\n#{t_ret}\r\nEND\r\n")
  else
    return send_data("END\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_last(s) ⇒ Object

alist_last <key> [forward]rn

( [VALUE <key> 0 <value length>rn <value>rn] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 763

def ev_alist_last(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1

  if ddata
    v = Marshal.load(ddata)[0]
    return send_data("END\r\n") if v.length == 0
    ret = v.last
    return send_data("VALUE #{s[1]} 0 #{ret.length}\r\n#{ret}\r\nEND\r\n")
  else
    return send_data("END\r\n")
  end        
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_length(s) ⇒ Object

alist_length <key> [forward]rn

(<length>|NOT_FOUND|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 787

def ev_alist_length(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward2(nodes[0], s) if nodes[0] != @nid
  ddata = @storages[hname].get(vn, k, d)
  @stats.read_count += 1

  return send_data("NOT_FOUND\r\n") unless ddata
  v = Marshal.load(ddata)[0]
  ret = v.length
  send_data("#{ret}\r\n")
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_pop(s) ⇒ Object

alist_pop <key> [forward]rn

( [VALUE <key> 0 <value length>rn <value>rn] END |NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 810

def ev_alist_pop(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
    return send_data("END\r\n") if v[0].length ==0
  else
    return send_data("END\r\n")
  end

  retv = v[0].pop
  v[1].pop
  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.read_count += 1
  @stats.write_count += 1

  if ret
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("VALUE #{s[1]} 0 #{retv.length}\r\n#{retv}\r\nEND\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_push(s) ⇒ Object

alist_push <key> <bytes> [forward]rn <data block>rn

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 845

def ev_alist_push(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  if nodes[0] != @nid
    return forward2(nodes[0], s, data)
  end

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  v[0].push(data)
  v[1].push(Time.now.to_i)
  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_push)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_push], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_shift(s) ⇒ Object

alist_shift <key> [forward]rn

( [VALUE <key> 0 <value length>rn <value>rn] END |NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 1169

def ev_alist_shift(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
    return send_data("END\r\n") if v[0].length ==0
  else
    return send_data("END\r\n")
  end

  retv = v[0].shift
  v[1].shift
  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.read_count += 1
  @stats.write_count += 1

  if ret
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("VALUE #{s[1]} 0 #{retv.length}\r\n#{retv}\r\nEND\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_sized_delete_and_prepend(s) ⇒ Object 



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# File 'lib/roma/plugin/plugin_alist.rb', line 470

def ev_alist_sized_delete_and_prepend(s); ev_alist_swap_and_sized_insert(s); end

#ev_alist_sized_insert(s) ⇒ Object

alist_sized_insert <key> <array-size> <bytes> [forward]rn <data block>rn

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 387

def ev_alist_sized_insert(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  v[0].insert(0,data)
  v[0] = v[0][0..(s[2].to_i - 1)]
  v[1].insert(0,Time.now.to_i)
  v[1] = v[1][0..(s[2].to_i - 1)]

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_sized_insert)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_sized_insert], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_sized_prepend(s) ⇒ Object 



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# File 'lib/roma/plugin/plugin_alist.rb', line 381

def ev_alist_sized_prepend(s); ev_alist_sized_insert(s); end

#ev_alist_sized_push(s) ⇒ Object

alist_sized_push <key> <array-size> <bytes> [forward]rn <data block>rn

(STORED|NOT_PUSHED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 885

def ev_alist_sized_push(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  max = s[2].to_i
  return send_data("NOT_PUSHED\r\n") if v[0].length >= max

  v[0].push(data)
  v[0] = v[0][0..(max - 1)]
  v[1].push(Time.now.to_i)
  v[1] = v[1][0..(max - 1)]

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1


  if ret
    if @stats.wb_command_map.key?(:alist_sized_push)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_sized_push], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_spushv(s) ⇒ Object

alist_spushv <hash-name> <vnode-id> src dst

|  ['alist_spushv' <hname> <vn>\r\n]->|
|<-['READY'\r\n]                      |
|                       [<dumpdata>]->|
|                             :       |
|                             :       |
|                    [<end of dump>]->|
|<-['STORED'\r\n]                     |



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# File 'lib/roma/plugin/plugin_alist.rb', line 1251

def ev_alist_spushv(s)
  if s.length != 3
    @log.error("#{__method__}:wrong number of arguments(#{s})")
    return send_data("CLIENT_ERROR Wrong number of arguments.\r\n")
  end
  if @stats.spushv_protection
    @log.info("#{__method__}:In spushv_protection")
    return send_data("SERVER_ERROR In spushv_protection.\r\n")          
  end
  @stats.run_receive_a_vnode["#{s[1]}_#{s[2]}"] = true

  $roma.stop_clean_up

  send_data("READY\r\n")

  count = 0
  loop {
    context_bin = read_bytes(20, 100)
    vn, last, clk, expt, klen = context_bin.unpack('NNNNN')
    break if klen == 0 # end of dump ?
    k = read_bytes(klen)
    vlen_bin = read_bytes(4, 100)
    vlen, =  vlen_bin.unpack('N')
    v = read_bytes(vlen, 100)
    val = to_alist_value(v)
    if val
# @log.debug("listdata #{vn} #{k} #{val.inspect}")
       count += 1 if merge_list(s[1], vn, last, clk, expt, k, v, val)
    else
# @log.debug("not listdata #{vn} #{k} #{val}")
      count += 1 if @storages[s[1]].load_stream_dump(vn, last, clk, expt, k, v)
    end
  }
  if @stats.spushv_protection
    @log.info("#{__method__}:Canceled because of spushv_protection")
    send_data("CANCELED\r\n")
  else
    send_data("STORED\r\n")
  end
  @log.debug("alist #{count} keys loaded.")
rescue Storage::StorageException => e
  @log.error("#{e.inspect} #{$@}")
  close_connection
  if Config.const_defined?(:STORAGE_EXCEPTION_ACTION) &&
      Config::STORAGE_EXCEPTION_ACTION == :shutdown
    @log.error("#{__method__}:Romad will stop")
    @stop_event_loop = true
  end
rescue => e
  @log.error("#{e}\n#{$@}")
ensure
  @stats.run_receive_a_vnode.delete("#{s[1]}_#{s[2]}") if s.length == 3
end

#ev_alist_swap_and_insert(s) ⇒ Object

alist_swap_and_insert <key> <bytes> [forward]rn <data block>rn

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 430

def ev_alist_swap_and_insert(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  idx = v[0].index(data)
  if idx
    v[0].delete_at(idx)
    v[1].delete_at(idx)
  end
  v[0].insert(0,data)
  v[1].insert(0,Time.now.to_i)

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_swap_and_insert)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_swap_and_insert], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_swap_and_push(s) ⇒ Object

alist_swap_and_push <key> <bytes> [forward]rn <data block>rn

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 930

def ev_alist_swap_and_push(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[2].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  idx = v[0].index(data)
  if idx
    v[0].delete_at(idx)
    v[1].delete_at(idx)
  end
  v[0].push(data)
  v[1].push(Time.now.to_i)

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_swap_and_push)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_swap_and_push], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_swap_and_sized_insert(s) ⇒ Object

alist_swap_and_sized_insert <key> <array-size> <bytes> [forward]rn <data block>rn

(STORED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 476

def ev_alist_swap_and_sized_insert(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  idx = v[0].index(data)
  if idx
    v[0].delete_at(idx)
    v[1].delete_at(idx)
  end
  v[0].insert(0,data)
  v[1].insert(0,Time.now.to_i)
  v[0] = v[0][0..(s[2].to_i - 1)]
  v[1] = v[1][0..(s[2].to_i - 1)]

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_swap_and_sized_insert)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_swap_and_sized_insert], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_swap_and_sized_push(s) ⇒ Object

alist_swap_and_sized_push <key> <array-size> <bytes> [forward]rn <data block>rn

(STORED|NOT_PUSHED|NOT_STORED|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 974

def ev_alist_swap_and_sized_push(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  if ddata
    v = Marshal.load(ddata)
  else
    v = [[],[]]
  end

  max = s[2].to_i

  idx = v[0].index(data)
  if idx
    v[0].delete_at(idx)
    v[1].delete_at(idx)
  else
    return send_data("NOT_PUSHED\r\n") if v[0].length >= max
  end
  v[0].push(data)
  v[0] = v[0][0..(max - 1)]
  v[1].push(Time.now.to_i)
  v[1] = v[1][0..(max - 1)]

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_swap_and_sized_push)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_swap_and_sized_push], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_to_json(s) ⇒ Object

alist_to_json <key> [index|range] [forward]rn

( VALUE <key> 0 <length of json string>rn <json string>rn ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 724

def ev_alist_to_json(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, 0)
  @stats.read_count += 1

  if ddata
    v = Marshal.load(ddata)[0]
    ret = nil
    if /(?:^(\d+)$|^(\d+)..((?:-)?\d+)$)/ =~ s[2]
      if $1
        if v.length <= $1.to_i
          return send_data("END\r\n")
        end
        ret = JSON.generate(v[Range.new($1.to_i,$1.to_i)])
      else
        ret = JSON.generate(v[Range.new($2.to_i,$3.to_i)])
      end
    else
      ret = JSON.generate(v)
    end
    return send_data("VALUE #{s[1]} 0 #{ret.length}\r\n#{ret}\r\nEND\r\n")
  else
    return send_data("END\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_to_s(s) ⇒ Object

alist_to_s <key> [index|range] [forward]rn

( [VALUE <key> 0 <length of length string>rn <length string>rn VALUE <key> 0 <value length>rn <value>rn] ENDrn |SERVER_ERROR <error message>rn)



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# File 'lib/roma/plugin/plugin_alist.rb', line 1209

def ev_alist_to_s(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  return forward1(nodes[0], s) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, 0)
  @stats.read_count += 1

  return send_data("END\r\n") unless ddata
  v = to_alist_value(ddata)
  if v
    ret = nil
    if /(?:^(\d+)$|^(\d+)..((?:-)?\d+)$)/ =~ s[2]
      if $1
        ret = v[0][Range.new($1.to_i,$1.to_i)].to_s
      else
        ret = v[0][Range.new($2.to_i,$3.to_i)].to_s
      end
    else
      ret = v[0].to_s
    end
    len = v[0].length
    send_data("VALUE #{s[1]} 0 #{len.to_s.length}\r\n#{len.to_s}\r\n")
    return send_data("VALUE #{s[1]} 0 #{ret.length}\r\n#{ret}\r\nEND\r\n")
  else
    return send_data("SERVER_ERROR data other than alist's format already exist.\r\n")
  end
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end

#ev_alist_update_at(s) ⇒ Object

alist_update_at <key> <index> <bytes>rn <data block>rn

(STORED|NOT_STORED|NOT_FOUND|SERVER_ERROR <error message>)rn



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# File 'lib/roma/plugin/plugin_alist.rb', line 1127

def ev_alist_update_at(s)
  hname, k, d, vn, nodes = calc_hash(s[1])
  data = read_bytes(s[3].to_i)
  read_bytes(2)
  return forward2(nodes[0], s, data) if nodes[0] != @nid

  ddata = @storages[hname].get(vn, k, d)
  return send_data("NOT_FOUND\r\n") unless ddata

  v = Marshal.load(ddata)

  idx = s[2].to_i
  return send_data("NOT_FOUND\r\n") if idx < 0 || v[0].length <= idx
  v[0][idx] = data
  v[1][idx] = Time.now.to_i

  expt = 0x7fffffff
  ret = @storages[hname].set(vn, k, d, expt ,Marshal.dump(v))
  @stats.write_count += 1

  if ret
    if @stats.wb_command_map.key?(:alist_update_at)
      Roma::WriteBehindProcess::push(hname, @stats.wb_command_map[:alist_update_at], k, data)
    end
    redundant(nodes[1..-1], hname, k, d, ret[2], expt, ret[4])
    send_data("STORED\r\n")
  else
    send_data("NOT_STORED\r\n")
  end  
rescue => e
  msg = "SERVER_ERROR #{e} #{$@}".tr("\r\n"," ")
  send_data("#{msg}\r\n")
  @log.error("#{e} #{$@}")
end