Class: AutoResp::ProxyServer

Inherits:
WEBrick::HTTPProxyServer
  • Object
show all
Includes:
Parser
Defined in:
lib/ar/proxy_server.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Parser

#parse, #parse_header_item

Constructor Details

#initialize(core, config = {}) ⇒ ProxyServer

Returns a new instance of ProxyServer.



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# File 'lib/ar/proxy_server.rb', line 15

def initialize(core, config={})
  @core = core
  super(config.update({
    :AccessLog  => [],
    :Logger     => WEBrick::Log.new("/dev/null")
  }))
  @sessions = []
  @ar_logger = config[:logger] || Logger.new
end

Instance Attribute Details

#sessions ⇒ Object (readonly)

Returns the value of attribute sessions.



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# File 'lib/ar/proxy_server.rb', line 13

def sessions
  @sessions
end

Instance Method Details

#before_filter(&block) ⇒ Object 



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# File 'lib/ar/proxy_server.rb', line 80

def before_filter(&block)
  logger.info "add before_filter".green
  before_filters << block
end

#before_filters ⇒ Object 



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# File 'lib/ar/proxy_server.rb', line 76

def before_filters
  @before_filters ||= []
end

#clear_before_filters ⇒ Object 



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# File 'lib/ar/proxy_server.rb', line 85

def clear_before_filters
  @before_filters.clear
end

#fetch(handler, declare, uri) ⇒ Object 



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# File 'lib/ar/proxy_server.rb', line 107

def fetch(handler, declare, uri)

  case handler
  when nil
    Net::HTTP.get_response(URI(uri)) do |res|
      return [res.to_hash, res.read_body, res.code]
    end
  when Proc
    if Regexp === declare
      mtc = uri.match(declare) 
      fetch( handler.call(*mtc), declare, uri )
    else
      fetch( handler.call, declare, uri )
    end
  when String
    if goto = redirect_path(handler)
      if is_uri?(goto)
        Net::HTTP.get_response(URI(goto)) do |res|
          return [res.to_hash, res.read_body, res.code]
        end
      else
        file = File.expand_path( goto )
        if File.exist?(file)
          content = IO.read file
          if File.binary? file
            return [nil, content, 200]
          else
            return parse(content)
          end
        end
      end
    else
      parse(handler)
    end
  when Fixnum
    [{}, "", handler]
  when Array
    [handler[1], handler[2], handler[0]]
  end
end

#find_auto_res(url) ⇒ Object 



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# File 'lib/ar/proxy_server.rb', line 89

def find_auto_res(url)
  rule = @core.rules.find do |condition, map_to|
    matched? url, condition
  end
      
  @rule = rule
  if rule
    condition, handlers = *rule
    handlers = [handlers] unless handlers.is_a?(Array)
    handlers.each {|proc| proc.call if proc.respond_to?(:call) }
    fetch(handlers.last, condition, url)
  end
end

#matched?(url, rule) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ar/proxy_server.rb', line 103

def matched?( url, rule )
  trim_url(rule) === trim_url(url)
end

#service(req, res) ⇒ Object 



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# File 'lib/ar/proxy_server.rb', line 25

def service(req, res)
  logger.info "[#{req.unparsed_uri}]"
  info = { start: Time.now }

  before_filters.each do |block|
    if block.call( req, res ) == false
      super req, res
      return
    end
  end

  begin
    header, body, status = find_auto_res(req.unparsed_uri)
  rescue => e
    header = {}
    body   = <<-MSG
      ERROR:
        #{e.message}
        #{e.backtrace.join "\n"}
      MSG
    status = 500
  end

  res.status = status if status

  if @rule

    logger.debug "match".ljust(8)   << ": #{req.unparsed_uri}"
    logger.debug "header".ljust(8)  << ": #{header}"
    logger.debug "body".ljust(8)    << ": \n#{body[0..200]}#{'...' if body.size > 200}"
    logger.debug "-"*50

    res['x-auto-response-condition']  = @rule.first.to_s
    res['x-auto-response-with']       = @rule.last.to_s

    if header
      header.each do |k,v|
        v = v.join("\n") if v.respond_to?(:join)
        res[k] = v
      end
    end
    res.body = body
    info[:matched] = true
  else
    super(req, res)
  end

  info[:end] = Time.now
  sessions << [req, res, info]
end