Class: Racknga::Middleware::InstanceName

Inherits:

Object

• Object
• Racknga::Middleware::InstanceName

show all

Defined in:

lib/racknga/middleware/instance_name.rb

Overview

require "racknga"
use Racknga::Middleware::InstanceName
run YourApplication

Constant Summary

CURRENT_BRANCH_MARKER =

/\A\* /

DEFAULT_HEADER_NAME =

"X-Responsed-By"

Instance Attribute Summary (collapse)

• - (Object) header readonly

  Returns the value of attribute header.

Instance Method Summary (collapse)

• - (Object) application_name
• - (Object) branch
• - (Object) call(environment)

  For Rack.

• - (InstanceName) initialize(application, options = {}) constructor

  A new instance of InstanceName.

• - (Object) revision
• - (Object) ruby
• - (Object) server
• - (Object) user
• - (Object) version

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# File 'lib/racknga/middleware/instance_name.rb', line 32

def initialize(application, options={})
  @application = application
  @options = options

  @header = construct_header.freeze
  @headers = construct_headers.freeze
end

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# File 'lib/racknga/middleware/instance_name.rb', line 31

def header
  @header
end

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# File 'lib/racknga/middleware/instance_name.rb', line 51

def application_name
  @options[:application_name] || @application.class.name
end

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# File 'lib/racknga/middleware/instance_name.rb', line 72

def branch
  current_branch = nil
  `git branch -a`.each_line do |line|
    case line
    when CURRENT_BRANCH_MARKER
      current_branch = line.sub(CURRENT_BRANCH_MARKER, "").strip
      break
    end
  end
  current_branch
end

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# File 'lib/racknga/middleware/instance_name.rb', line 41

def call(environment)
  response = @application.call(environment).to_a

  [
    response[0],
    response[1].merge(@headers),
    response[2],
  ]
end

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# File 'lib/racknga/middleware/instance_name.rb', line 59

def revision
  `git describe --abbrev=7 HEAD`.strip # XXX be SCM-agonostic
end

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# File 'lib/racknga/middleware/instance_name.rb', line 84

def ruby
  RUBY_DESCRIPTION
end

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# File 'lib/racknga/middleware/instance_name.rb', line 63

def server
  `hostname`.strip
end

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# File 'lib/racknga/middleware/instance_name.rb', line 67

def user
  `id --user --name`.strip
end

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# File 'lib/racknga/middleware/instance_name.rb', line 55

def version
  @options[:version]
end