Class: Rack::Immutable

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/immutable.rb

Constant Summary collapse

DEFAULT_MATCH =

By default, match strings like ‘main.abc123.js’. Assume the fingerprint is a Git SHA value of at least 6 characters, comes before the extension, and has some preceding segment of the path.

/.*\.[A-Za-z\d]{6}[A-Za-z\d]*\.[a-z]+/
IMMUTABLE = 
"public, max-age=604800, immutable"

Instance Method Summary collapse

Constructor Details

#initialize(app, match: nil, cache_control: nil) ⇒ Immutable

Returns a new instance of Immutable.



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# File 'lib/rack/immutable.rb', line 13

def initialize(app, match: nil, cache_control: nil)
  @app = app
  @match = match || DEFAULT_MATCH
  @cache_control = cache_control || IMMUTABLE
end

Instance Method Details

#_matches(path, env) ⇒ Object 



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# File 'lib/rack/immutable.rb', line 26

def _matches(path, env)
  return @match == path if @match.is_a?(String)
  return @match.match?(path) if @match.is_a?(Regexp)
  return @match.call(env)
end

#call(env) ⇒ Object 



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# File 'lib/rack/immutable.rb', line 19

def call(env)
  status, headers, body = @app.call(env)
  headers[Rack::CACHE_CONTROL] = @cache_control if
    self._matches(env["PATH_INFO"], env)
  return status, headers, body
end