Class: Memcache::SegmentedServer

Inherits:
Server show all
Defined in:
lib/memcache/segmented_server.rb

Constant Summary collapse

MAX_SIZE =

bytes

1000000
PARTIAL_VALUE = 
0x40000000

Constants inherited from Server

Memcache::Server::CONNECT_TIMEOUT, Memcache::Server::DEFAULT_PORT, Memcache::Server::READ_RETRY_DELAY

Instance Attribute Summary

Attributes inherited from Server

#host, #port, #retry_at, #status

Instance Method Summary collapse

Methods inherited from Server

#alive?, #append, #clone, #close, #count, #decr, #flush_all, #gets, #incr, #initialize, #inspect, #name, #prepend, #readonly?, #stats, #strict_reads?

Constructor Details

This class inherits a constructor from Memcache::Server

Instance Method Details

#add(key, value, expiry = 0, flags = 0) ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 62

def add(key, value, expiry = 0, flags = 0)
  value, flags = store_segments(key, value, expiry, flags)
  super(key, value, expiry, flags)
end

#cas(key, value, cas, expiry = 0, flags = 0) ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 57

def cas(key, value, cas, expiry = 0, flags = 0)
  value, flags = store_segments(key, value, expiry, flags)
  super(key, value, cas, expiry, flags)
end

#delete(keys, cas = nil) ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 41

def delete(keys, cas = nil)
  return delete([keys], cas) unless keys.kind_of?(Array)
  return {} if keys.empty?

  results = super_get(keys, cas)
  keys_to_fetch = keys     
  extract_keys(results, keys_to_fetch)
  keys_to_fetch.each{|k| super k}
end

#get(keys, cas = nil) ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 10

def get(keys, cas = nil)
  return get([keys], cas)[keys.to_s] unless keys.kind_of?(Array)
  return {} if keys.empty?

  results = super
  keys = {}
  keys_to_fetch = []

  extract_keys(results, keys_to_fetch, keys)
  
  parts = super(keys_to_fetch)
  keys.each do |key, hashes|
    value = ''
    hashes.each do |hash_key|          
      if part = parts[hash_key]
        value << part
      else
        value = nil
        break
      end
    end

    if value
      value.memcache_cas   = results[key].memcache_cas
      value.memcache_flags = results[key].memcache_flags ^ PARTIAL_VALUE
    end
    results[key] = value
  end
  results
end

#replace(key, value, expiry = 0, flags = 0) ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 67

def replace(key, value, expiry = 0, flags = 0)
  value, flags = store_segments(key, value, expiry, flags)
  super(key, value, expiry, flags)
end

#set(key, value, expiry = 0, flags = 0) ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 51

def set(key, value, expiry = 0, flags = 0)
  delete key if !(super_get(key)).nil?
  value, flags = store_segments(key, value, expiry, flags)
  super(key, value, expiry, flags) && value
end

#super_get ⇒ Object 



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# File 'lib/memcache/segmented_server.rb', line 8

alias :super_get :get