Class: EventMachine::Protocols::RedisMethodFactory

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

Instance Method Summary collapse

Constructor Details

#initialize(parent) {|_self| ... } ⇒ RedisMethodFactory

Returns a new instance of RedisMethodFactory.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/joffice_redis/redis_method_factory.rb', line 26

def initialize(parent)
  @class_name='syncronized_redis_protocol'
  #@buffer=['', "require 'em-redis'","require 'active_support'",'module EventMachine', 'module Protocols', 'module Redis']
  @buffer=['']
  yield self if block_given?
  method 'ping' do |m|
    m << 'exists?(0)'
  end
  method('blank?', 'args') do |m|
    m << "args.blank? || args.flatten!.blank?"
  end
  #@buffer << 'end'
  #@buffer << 'end'
  #@buffer << 'end'
  #generate
  parent.class_eval @buffer.join("\n")
end

Instance Method Details

#generate ⇒ Object 



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# File 'lib/joffice_redis/redis_method_factory.rb', line 130

def generate
  dir=File.join(File.absolute_path(File.dirname(__FILE__)),'metadata')
  FileUtils.mkdir_p(dir)
  
  path=File.join(dir, "#{@class_name}.rb")
  f=File.open(path,'w')
  f.write(@buffer.join("\n"))
  f.close
  #require path   
end

#method(name, args = nil) {|buf| ... } ⇒ Object

Yields:

  • (buf) 


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# File 'lib/joffice_redis/redis_method_factory.rb', line 44

def method(name, args=nil)      
  buf=[]
  yield buf
  buf=buf.map{|v| "    #{v}"}.join("\n")
  signature=(args ? "#{name}(#{args})" : name)
  @buffer << ''
  @buffer << "def #{signature}\n#{buf}\nend"
  @buffer << "public :#{name}"
  @buffer << ''
end

#method_alias(name, options = {}) ⇒ Object 



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# File 'lib/joffice_redis/redis_method_factory.rb', line 94

def method_alias(name, options={})      
  em_name="#{name}_real"
  name_sync="#{name}_sync"
  name_async="#{name}_async"        
  @buffer << "alias :#{em_name} :#{name}"
  args = (method_call_args[options[:args_count].to_i || 1] || '*args')
  
  method(name_sync, args) do |m|
    m << "return [] if blank?(args)" if (options[:args_count] || 1)>3
    m << "c=Fiber.current"
    m << "#{em_name}(#{args}) { |a|  c.resume(a); }"
    m << "Fiber.yield"
  end
  
  if options[:cache]
    @buffer << "alias :#{name_sync}_no_cache :#{name_async}"
    method(name_sync, args) do |m|
      m << "@cache_#{name}||=#{name_sync}_no_cache(#{args})"
    end
  end
  
  method(name_async, args) do |m|
    m << "return if blank?(args)" if (options[:args_count] || 1)>3
    m << "#{em_name}(#{args}) { |a| }"
  end
  
  @buffer << "alias :#{name}! :#{name_async}"
  @buffer << "alias :#{name} :#{options[:sync] ? name_sync : name_async}"
  
  if options[:alias]
    options[:alias].each do |alias_name|
      @buffer << "alias :#{alias_name} :#{name}"
    end
  end
end

#method_call(name, options = {}) ⇒ Object 



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# File 'lib/joffice_redis/redis_method_factory.rb', line 59

def method_call(name, options={})
  name_sync="#{name}_sync"
  name_async="#{name}_async"        
  
  args = (method_call_args[options[:args_count] || 1] || '*args')       
  
  call_args = case (options[:args_count] || 1)
    when 2 then "[:#{name}, key, value]"
    when 1 then "[:#{name}, key]"
    when 0 then "[:#{name}]"
  else "args.unshift(:#{name})"
  end
  
  method(name_sync, args) do |m|
    m << "return [] if blank?(args)" if (options[:args_count] || 1)>3
    m << "c=Fiber.current"
    m << "call_command(#{call_args}) { |a|  c.resume(a); }"
    m << "Fiber.yield"
  end
  
  method(name_async, args) do |m|
    m << "return if blank?(args)" if (options[:args_count] || 1)>3
    m << "call_command(#{call_args}) { |a| }"
  end
  
  @buffer << "alias :#{name}! :#{name_async}"
  @buffer << "alias :#{name} :#{options[:sync] ? name_sync : name_async}"
  
  if options[:alias]
    options[:alias].each do |alias_name|
      @buffer << "alias :#{alias_name} :#{name}"
    end
  end
end

#method_call_args ⇒ Object 



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# File 'lib/joffice_redis/redis_method_factory.rb', line 55

def method_call_args
  @method_call_args||=['', 'key', 'key, value']
end