https://github.com/joearms/adapter_pattern

adapter pattern for mochiweb misultin and cowboy
https://github.com/joearms/adapter_pattern

Last synced: 3 months ago
JSON representation

adapter pattern for mochiweb misultin and cowboy

• Host: GitHub
• URL: https://github.com/joearms/adapter_pattern
• Owner: joearms
• Created: 2012-02-17T14:09:39.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2012-02-17T14:15:18.000Z (over 12 years ago)
• Last Synced: 2024-07-19T22:44:15.790Z (4 months ago)
• Language: Erlang
• Homepage:
• Size: 126 KB
• Stars: 26
• Watchers: 4
• Forks: 6
• Open Issues: 0
• Metadata Files:
  • Readme: Readme

Awesome Lists containing this project

README

        
This is an experiment in the use of the adapter pattern

   It started off as an experiment in passing JSON terms back and

          forth between a server and the browser - for this I used misultin

          but yesterdays announcement that misultin would cease to be supported

          promoted this work - then I threw in ehe which I've been toying with

          for a while ...

  

I have made simple adapters for misultin/mochiweb and cowboy.

The example assumes that misultin/mochiweb and cowboy have been 

installed and compiled on your machine.

On my machine I have downloaded the latest zip files from github

and built the packages

I have added three lines in ${HOME}.erlang so that the erlang loader

can find these three programs.

  code:add_patha("/Users/joe/nobackup/mochi-mochiweb-af4cb95/ebin").

  code:add_patha("/Users/joe/nobackup/extend-cowboy-e7b6e2a/ebin").

  code:add_patha("/Users/joe/nobackup/installed/mochi-mochiweb-b7f3693/ebin").

There are three adapters

   misultin_adapter.erl

   cowboy_adapter.erl

   mochiweb_adapter.erl

Using these adapters we can write server.erl in a generic manner.

I have also made a simple scripting language ehe.

About ehe

=========

   Ehe is *very* simple.

   Files with the .ehe extension are assumed to be html files containing embedded

   Erlang.

   The syntax  assumes the bit inside the delimiters is a sequence

   or Erlang expressions. The replacement value of the sequence is the

   *last* value in the sequence. Binndings created in the squence are propagated

   to the next block of embedded erlang.

   The Global variable 'Req' inside an embedded Erlang expression is the

   paramterised module which allows the appropriate adapter to be called.

   Thus 'Req:magic()' calls (for example) calls mochiweb_adapter:magic(Req)

   if we are using the mochiweb adapter.

To play with this

=================

   1) install mochiweb, misultin and cowboy

   2) edit your .erlang so that the system can find the mochiweb, misultin and

      cowboy compiled beam files

   3) type

      > make server1

      > make server2

      > make server3

     to test

   4) Take a look at the (generic) server.erl

   5) Take a look at json_round_trip.ehe

    Note: this assumes the script openchrome starts a chrome browser

    you will have to tweak openchrome to start some other browser