Class: T2Server::ConnectionFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/t2-server/net/connection.rb

Overview

This is a factory for connections to a Taverna Server. It will return either a http or https connection depending on what sort of uri is passed into it. This class maintains a list of connections that it knows about and will return an already established connection if it can.

Constant Summary collapse

@@connections =

list of connections we know about

[]

Class Method Summary collapse

Class Method Details

.connect(uri, params = nil) ⇒ Object

:call-seq:

ConnectionFactory.connect(uri) -> Connection

Connect to a Taverna Server instance and return either a T2Server::HttpConnection or T2Server::HttpsConnection object to represent it.



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# File 'lib/t2-server/net/connection.rb', line 55

def ConnectionFactory.connect(uri, params = nil)
  # we want to use URIs here
  if !uri.is_a? URI
    raise URI::InvalidURIError.new
  end

  # if we're given params they must be of the right type
  if !params.nil? && !params.is_a?(ConnectionParameters)
    raise ArgumentError, "Parameters must be ConnectionParameters", caller
  end

  # see if we've already got this connection
  conn = @@connections.find {|c| c.uri == uri}

  if !conn
    if uri.scheme == "http"
      conn = HttpConnection.new(uri, params)
    elsif uri.scheme == "https"
      conn = HttpsConnection.new(uri, params)
    else
      raise URI::InvalidURIError.new
    end

    @@connections << conn
  end

  conn
end