Update source code to work with OSGi environment

[Ryo51289]

Hi bigpuritz ! The first , thanks for your public source code ,this very useful to my work .
I've been used this source code to implement the Netty + Servlet API in OSGi environment , it work greate for me with a litlte bit of changes .I will be show you what I need and what I changed with netty-servlet-brigde

• What i need :
  • My project building on OSGi environment and I want to work with Netty + Servlet API , I need a servlet handler that have ability to dynamic adding servlet at runtime (after netty server start ,if you add a new servlet or modified ,it will be re-adding to servlet handler for serve request)
  • With the demo in your repository , I see that the servlet should be loaded and initialized before the server ,servlet brigde handler started ,and if i add new servlet at runtime ,the servlet still available to serve request ,but it come without init parameters or init() function to be invoked
• What did i change ?

  • I change a litle of source code to make it work with my require ,detail is following:

    • Adding getter/setter for 'servlets' in net.javaforge.netty.servlet.bridge.config.WebappConfiguration

    • Update net.javaforge.netty.servlet.bridge.impl.ServletBridgeWebapp constructor visibility to public

      When the server started , if new servlet is added at runtime , you need to initialized it ,so I get the servlets and :

      1.Check if servlet handler contains a servlet which same as new servlet added then remove it
      2.Adding servlet to servlet handler . I'm using :

              WebappConfiguration#addHttpServlet(servletInstance,servletPath) )
      

      3.Initialized servlet using ServletBridgeWebapp

             ServletBridgeWebapp  webServlet = new ServletBridgeWebapp();
             webServlet.init(webapp, channel);
      

    Now ,when you adding new servlet or modified the existence , servlet handler will re-adding and initializing it for you

That's all i need to show you about my change , if you have the greater way to accomplished that ,please show me these
Please consider to this pull issue and sorry about my English
Many thanks !

[hkurohara]

Hi, I'm Kurohara.
To bigpuritz, Thank you for making open this project.

Let me add more comment about this pull reqeust.
He is a member of our "WiperDog"(www.wiperdog.org) development team, and we were looking for useful servlet aid module that works on OSGi + netty framework.
Though we found netty-servlet-bridge(this project), there are some mismatch with OSGi environment.
We choose to change those mismatch by ourselves.

So this pull request is not 'personal' as mentioned in the title.
And I think the changes in this pull request is not for just our project, it's generic enough.

Thanks.

[Ryo51289]

Thanks for your comment , Kurohara . I've changed the pull request title to make it more relate with our change .Sorry about my mistake

[bigpuritz]

Hi @nguyenxuanluong-luvina,

can you please review your pull request due to original sourcecode changes (migration to netty 4.1.x).

Thanks.