Class: Lacquer::CacheControl

Inherits:
Object
  • Object
show all
Includes:
CacheUtils
Defined in:
lib/lacquer/cache_control.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from CacheUtils

#clear_cache_for, included, #send_cache_control_headers, #set_cache_ttl, #set_default_cache_ttl

Constructor Details

#initialize ⇒ CacheControl

Returns a new instance of CacheControl.



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# File 'lib/lacquer/cache_control.rb', line 10

def initialize
  self.store = []
end

Instance Attribute Details

#store ⇒ Object

Returns the value of attribute store.



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# File 'lib/lacquer/cache_control.rb', line 8

def store
  @store
end

Instance Method Details

#configure {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/lacquer/cache_control.rb', line 20

def configure
  yield self
end

#purge(group, *args) ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 24

def purge(group, *args)
  clear_cache_for(*urls_for(group, *args))      
end

#register(group, options = {}) ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 14

def register(group, options = {})
  options[:group]  = group
  options[:args]   = Array(options[:args]).compact
  store            << options
end

#to_vcl_conditions(urls = store) ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 33

def to_vcl_conditions(urls = store)
  urls.map { |opt| %Q[req.url ~ "#{(opt[:url] % opt[:args])}"] }.join(" || ")
end

#to_vcl_override_ttl_urls ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 37

def to_vcl_override_ttl_urls
  urls_grouped_by_expires.map do |expires_in, list|
    <<-CODE.gsub(/^[ \t]{4}*/, '')
    if(#{to_vcl_conditions(list)}) {
      unset beresp.http.Set-Cookie;
      set beresp.ttl = #{expires_in};
      return(deliver);
    }
    CODE
  end.join("\n")
end

#to_vcl_pass_urls ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 49

def to_vcl_pass_urls
  <<-CODE.gsub(/^[ \t]{4}*/, '')
  if(#{to_vcl_conditions(urls_by(:pass))}) {
    return(pass);
  }
  CODE
end

#to_vcl_pipe_urls ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 57

def to_vcl_pipe_urls
  <<-CODE.gsub(/^[ \t]{4}*/, '')
  if(#{to_vcl_conditions(urls_by(:pipe))}) {
    return(pipe);
  }
  CODE
end

#urls_for(group, *args) ⇒ Object 



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# File 'lib/lacquer/cache_control.rb', line 28

def urls_for(group, *args)
  args.map! { |arg| arg.to_param }
  urls_by(group).map { |options| options[:url] % args }
end