Class: Munson::Middleware::EncodeJsonApi

Inherits:
Faraday::Middleware
  • Object
show all
Defined in:
lib/munson/middleware/encode_json_api.rb

Constant Summary collapse

CONTENT_TYPE = 
'Content-Type'.freeze
ACCEPT = 
'Accept'.freeze
MIME_TYPE = 
'application/vnd.api+json'.freeze
USER_AGENT = 
'User-Agent'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(app, key_formatter = nil) ⇒ EncodeJsonApi

Returns a new instance of EncodeJsonApi.



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# File 'lib/munson/middleware/encode_json_api.rb', line 9

def initialize(app, key_formatter = nil)
  super(app)
  @key_formatter = key_formatter
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/munson/middleware/encode_json_api.rb', line 14

def call(env)
  env[:request_headers][USER_AGENT] = "Munson v#{Munson::VERSION}"
  env[:request_headers][ACCEPT] ||= MIME_TYPE
  match_content_type(env) do |data|
    env[:body] = encode data
  end
  @app.call env
end

#encode(data) ⇒ Object 



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# File 'lib/munson/middleware/encode_json_api.rb', line 23

def encode(data)
  json = @key_formatter ? @key_formatter.externalize(data) : data
  ::JSON.dump(json)
end

#has_body?(env) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/munson/middleware/encode_json_api.rb', line 40

def has_body?(env)
  body = env[:body] and !(body.respond_to?(:to_str) and body.empty?)
end

#match_content_type(env) ⇒ Object 



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# File 'lib/munson/middleware/encode_json_api.rb', line 28

def match_content_type(env)
  if process_request?(env)
    env[:request_headers][CONTENT_TYPE] ||= MIME_TYPE
    yield env[:body] unless env[:body].respond_to?(:to_str)
  end
end

#process_request?(env) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/munson/middleware/encode_json_api.rb', line 35

def process_request?(env)
  type = request_type(env)
  has_body?(env) and (type.empty? or type == MIME_TYPE)
end

#request_type(env) ⇒ Object 



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# File 'lib/munson/middleware/encode_json_api.rb', line 44

def request_type(env)
  type = env[:request_headers][CONTENT_TYPE].to_s
  type = type.split(';', 2).first if type.index(';')
  type
end