Class: Acme::FaradayMiddleware

Inherits:
Faraday::Middleware
  • Object
show all
Defined in:
lib/acme/faraday_middleware.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, client:) ⇒ FaradayMiddleware

Returns a new instance of FaradayMiddleware.



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# File 'lib/acme/faraday_middleware.rb', line 4

def initialize(app, client:)
  super(app)
  @client = client
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/acme/faraday_middleware.rb', line 2

def client
  @client
end

#env ⇒ Object (readonly)

Returns the value of attribute env.



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# File 'lib/acme/faraday_middleware.rb', line 2

def env
  @env
end

#response ⇒ Object (readonly)

Returns the value of attribute response.



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# File 'lib/acme/faraday_middleware.rb', line 2

def response
  @response
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/acme/faraday_middleware.rb', line 9

def call(env)
  @env = env
  @env.body = crypto.generate_signed_jws(header: { nonce: pop_nonce }, payload: env.body)
  @app.call(env).on_complete {|env| on_complete(env) }
end

#on_complete(env) ⇒ Object

Raises:



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# File 'lib/acme/faraday_middleware.rb', line 15

def on_complete(env)
  raise Acme::Error::NotFound, env.url.to_s if env.status == 404

  nonces << env.response_headers['replay-nonce']

  content_type = env.response_headers['Content-Type']

  if content_type == 'application/json' || content_type == 'application/problem+json'
    env.body = JSON.load(env.body)
  end

  if env.response_headers.key?('Link')
    link_header = env.response_headers['Link']
    links = link_header.split(', ').map do |entry|
      link = entry.match(/<(.*?)>;/).captures.first
      name = entry.match(/rel="([\w_-]+)"/).captures.first
      [name, link]
    end

    env.response_headers['Link'] = Hash[*links.flatten]
  end

  return if env.success?

  error_name = env.body['type'].gsub('urn:acme:error:', '').classify
  error_class = if Acme::Error.qualified_const_defined?(error_name)
    "Acme::Error::#{error_name}".constantize
  else
    Acme::Error
  end

  message = if env.body.is_a? Hash
    env.body['detail']
  else
    "Error message: #{env.body}"
  end

  raise error_class, env.body['detail']
end