Class: MemCache::Server

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

Overview

Extends the MemCache::Server object so that is is able to request stats.

Instance Method Summary collapse

Instance Method Details

#key ⇒ Object

Returns a unique key for the server.



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# File 'lib/memcache_server.rb', line 7

def key
  "#{host}:#{port}"
end

#socket! ⇒ Object

Returns the open socket or raises a MemCache::MemCacheError if one is not available.



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# File 'lib/memcache_server.rb', line 12

def socket!
  socket or raise MemCacheError, "No connection to server"
end

#stats(type = nil) ⇒ Object

Returns a hash of {stat_key => value, ...} for all of the Server stats.



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# File 'lib/memcache_server.rb', line 17

def stats(type = nil)
  unless type.nil? || STAT_TYPES.include?(type)
    raise MemCacheError, "Not a valid stat type.  Valid stat types are: #{STAT_TYPES * ', '}"
  end

  sock = socket!

  stats = {}
  begin
    sock.write "stats#{type ? ' ' + type : nil}\r\n"

    # Loop through the status which are sent back in the format of:
    # STAT <name> <value>\r\n
    # and ends with
    # END\r\n
    while (text = sock.gets)
      break if text =~ /^END/
      
      s, name, value = text.split(/ /)
      stats[name] = value[0..-3]
    end
  rescue SystemCallError, IOError => err
    server.close
    raise MemCacheError, err.message
  end

  stats
end