class ChefZero::Endpoints::RestObjectEndpoint

Typical REST leaf endpoint (/roles/NAME or /data/BAG/NAME)

Attributes

identity_keys[R]

Public Class Methods

new(server, identity_keys = [ "name" ]) click to toggle source
Calls superclass method
# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 9
def initialize(server, identity_keys = [ "name" ])
  super(server)
  identity_keys = [ identity_keys ] if identity_keys.is_a?(String)
  @identity_keys = identity_keys
end

Public Instance Methods

delete(request) click to toggle source
# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 42
def delete(request)
  result = get_data(request)
  delete_data(request)
  already_json_response(200, populate_defaults(request, result))
end
get(request) click to toggle source
# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 17
def get(request)
  already_json_response(200, populate_defaults(request, get_data(request)))
end
patch_request_body(request) click to toggle source
# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 48
def patch_request_body(request)
  existing_value = get_data(request, nil, :nil)
  if existing_value
    request_json = FFI_Yajl::Parser.parse(request.body)
    existing_json = FFI_Yajl::Parser.parse(existing_value)
    merged_json = existing_json.merge(request_json)
    if merged_json.size > request_json.size
      return FFI_Yajl::Encoder.encode(merged_json, pretty: true)
    end
  end

  request.body
end
put(request) click to toggle source
# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 21
def put(request)
  # We grab the old body to trigger a 404 if it doesn't exist
  get_data(request)

  # If it's a rename, check for conflict and delete the old value
  if is_rename?(request)
    key = identity_key_value(request)

    begin
      create_data(request, request.rest_path[0..-2], key, request.body, :data_store_exceptions)
    rescue DataStore::DataAlreadyExistsError
      return error(409, "Cannot rename '#{request.rest_path[-1]}' to '#{key}': '#{key}' already exists")
    end
    delete_data(request)
    already_json_response(201, populate_defaults(request, request.body))
  else
    set_data(request, request.rest_path, request.body)
    already_json_response(200, populate_defaults(request, request.body))
  end
end

Private Instance Methods

identity_key_value(request) click to toggle source

Get the value of the (first existing) identity key from the request body or nil

# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 65
def identity_key_value(request)
  request_json = parse_json(request.body)
  identity_keys.map { |k| request_json[k] }.compact.first
end
is_rename?(request) click to toggle source

Does this request change the value of the identity key?

# File lib/chef_zero/endpoints/rest_object_endpoint.rb, line 71
def is_rename?(request)
  return false unless (key = identity_key_value(request))

  key != request.rest_path[-1]
end