Class: Amber::Server

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(port = 3001, host = '0.0.0.0') ⇒ Server

Returns a new instance of Server.



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# File 'lib/amber/server.rb', line 4

def initialize(port = 3001, host = '0.0.0.0')
  @port = port
  @host = host
  @server_socket
  @server_address
  @fd_set = []
end

Instance Attribute Details

#base ⇒ Object

Returns the value of attribute base.



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# File 'lib/amber/server.rb', line 2

def base
  @base
end

#host ⇒ Object

Returns the value of attribute host.



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# File 'lib/amber/server.rb', line 2

def host
  @host
end

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/amber/server.rb', line 2

def port
  @port
end

Instance Method Details

#communicate(socket) ⇒ Object 



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# File 'lib/amber/server.rb', line 36

def communicate(socket)
  if socket == @server_socket
    begin
      client_socket, client_address = @server_socket.accept_nonblock
      @fd_set << client_socket
    rescue IO::WaitReadable, Errno::EINTR
      retry
    end
    
  else
    @fd_set.delete(socket)
    task = Fiber.new {
      self.transaction(socket)
    }
    task.resume
  end
end

#prepare ⇒ Object 



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# File 'lib/amber/server.rb', line 12

def prepare
  @server_socket = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
  @server_address = Socket.sockaddr_in(@port, @host)

  @server_socket.setsockopt(Socket::SOL_SOCKET, Socket::SO_REUSEADDR, 1)
  @server_socket.bind(@server_address)
  @server_socket.listen(5)

  @fd_set << @server_socket
end

#start ⇒ Object 



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# File 'lib/amber/server.rb', line 23

def start
  loop {
    fd_items = IO.select(@fd_set, [], [], 5)

    if fd_items.is_a?(Array)
      readable_items = fd_items.first
      readable_items.each do |socket|
        self.communicate(socket)
      end
    end
  }
end

#transaction(socket) ⇒ Object 



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# File 'lib/amber/server.rb', line 54

def transaction(socket)
  http_request = Amber::Http::Request.new(socket)
  http_response = Amber::Http::Response.new(socket)

  if http_request.receive
    time = Time.new
    time_string = time.strftime("%Y-%m-%d %H:%M:%S")
    STDOUT.puts "#{time_string} #{http_request.method} #{http_request.url}"
    begin
      if (path = @base.route.find(http_request.url)) && path.can_call?
        if path.method == http_request.method
          result = path.callback.call http_request
          case result
          when Amber::View
            http_response.status = result.code.to_s
            http_response.header = result.header
            http_response.content_type = result.content.type
            http_response.body = result.content.body
          when String
            http_response.status = "200"
            http_response.body = result
          else
            http_response.status = "500"
            http_response.body = "<html><h1>Server Internal Error</h1></html>"
          end
        else
          http_response.status = "301"
          http_response.body = "<html><h1>Moved Permanently</h1></html>"
        end
      else
        http_response.status = "404"
        http_response.body = "<html><h1>Not Found</h1></html>"
      end
    rescue Exception => e
      STDOUT.puts e
    end
  else
    http_response.status = "400"
    http_response.body = "<html><h1>Bad Request</h1></html>"
  end

  http_response.send

  socket.close
end