Skip to content

mitchellh/middleware

master
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
lib
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Middleware

Build Status

This is a generalized library for using middleware patterns within your Ruby projects.

To get started, the best place to look is the user guide.

Installation

This project is distributed as a RubyGem:

$ gem install middleware

Usage

Once you create a basic middleware, you can use the builder to have a nice DSL to build middleware stacks. Calling the middleware is simple, as well.

# Basic middleware that just prints the inbound and
# outbound steps.
class Trace
  def initialize(app, value)
    @app   = app
    @value = value
  end

  def call(env)
    puts "--> #{@value}"
    @app.call(env)
    puts "<-- #{@value}"
  end
end

# Build the actual middleware stack which runs a sequence
# of slightly different versions of our middleware.
stack = Middleware::Builder.new do
  use Trace, "A"
  use Trace, "B"
  use Trace, "C"
end

# Run it!
stack.call(nil)

And the output:

--> A
--> B
--> C
<-- C
<-- B
<-- A

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

About

Generalized middleware implementation for Ruby.

Resources

License

Stars

Watchers

Forks

Packages

No packages published

Contributors 4

  •  
  •  
  •  
  •  

Languages