Class: Grape::Endpoint
Overview
An Endpoint is the proxy scope in which all routing blocks are executed. In other words, any methods on the instance level of this class may be called from inside a ‘get`, `post`, etc.
Instance Attribute Summary collapse
#inheritable_setting, #top_level_setting
Class Method Summary
collapse
Instance Method Summary
collapse
#body, #content_type, #cookies, #declared, #entity_class_for_obj, #entity_representation_for, #error!, #file, post_filter_methods, #present, #redirect, #return_no_content, #route, #status, #stream, #version
#header
#api_class_setting, #get_or_set, #global_setting, #namespace_end, #namespace_inheritable, #namespace_inheritable_to_nil, #namespace_reverse_stackable, #namespace_reverse_stackable_with_hash, #namespace_setting, #namespace_stackable, #namespace_stackable_with_hash, #namespace_start, #route_end, #route_setting, #unset, #unset_api_class_setting, #unset_global_setting, #unset_namespace_inheritable, #unset_namespace_setting, #unset_namespace_stackable, #unset_route_setting, #within_namespace
Constructor Details
#initialize(new_settings, options = {}) { ... } ⇒ Endpoint
Note:
This happens at the time of API definition, so in this context the
Create a new endpoint. endpoint does not know if it will be mounted under a different endpoint.
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# File 'lib/grape/endpoint.rb', line 75
def initialize(new_settings, options = {}, &block)
require_option(options, :path)
require_option(options, :method)
self.inheritable_setting = new_settings.point_in_time_copy
route_setting(:saved_declared_params, namespace_stackable(:declared_params))
route_setting(:saved_validations, namespace_stackable(:validations))
namespace_stackable(:representations, []) unless namespace_stackable(:representations)
namespace_inheritable(:default_error_status, 500) unless namespace_inheritable(:default_error_status)
@options = options
@options[:path] = Array(options[:path])
@options[:path] << '/' if options[:path].empty?
@options[:method] = Array(options[:method])
@options[:route_options] ||= {}
@lazy_initialize_lock = Mutex.new
@lazy_initialized = nil
@block = nil
@status = nil
@file = nil
@body = nil
@proc = nil
return unless block_given?
@source = block
@block = self.class.generate_api_method(method_name, &block)
end
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Instance Attribute Details
#block ⇒ Object
Returns the value of attribute block.
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# File 'lib/grape/endpoint.rb', line 10
def block
@block
end
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#env ⇒ Object
Returns the value of attribute env.
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# File 'lib/grape/endpoint.rb', line 11
def env
@env
end
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Returns the value of attribute headers.
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# File 'lib/grape/endpoint.rb', line 11
def
@headers
end
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#options ⇒ Object
Returns the value of attribute options.
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# File 'lib/grape/endpoint.rb', line 10
def options
@options
end
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#params ⇒ Object
Returns the value of attribute params.
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# File 'lib/grape/endpoint.rb', line 11
def params
@params
end
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#request ⇒ Object
Returns the value of attribute request.
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# File 'lib/grape/endpoint.rb', line 11
def request
@request
end
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#source ⇒ Object
Returns the value of attribute source.
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# File 'lib/grape/endpoint.rb', line 10
def source
@source
end
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Class Method Details
.before_each(new_setup = false, &block) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 18
def before_each(new_setup = false, &block)
@before_each ||= []
if new_setup == false
return @before_each unless block_given?
@before_each << block
else
@before_each = [new_setup]
end
end
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.generate_api_method(method_name, &block) ⇒ Proc
This method is part of a private API.
You should avoid using this method if possible, as it may be removed or be changed in the future.
Create an UnboundMethod that is appropriate for executing an endpoint route.
The unbound method allows explicit calls to return
without raising a LocalJumpError
. The method will be removed, but a Proc
reference to it will be returned. The returned Proc
expects a single argument: the instance of Endpoint
to bind to the method during the call.
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# File 'lib/grape/endpoint.rb', line 46
def generate_api_method(method_name, &block)
if method_defined?(method_name)
raise NameError.new("method #{method_name.inspect} already exists and cannot be used as an unbound method name")
end
define_method(method_name, &block)
method = instance_method(method_name)
remove_method(method_name)
proc do |endpoint_instance|
ActiveSupport::Notifications.instrument('endpoint_render.grape', endpoint: endpoint_instance) do
method.bind(endpoint_instance).call
end
end
end
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.new(*args, &block) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 14
def new(*args, &block)
self == Endpoint ? Class.new(Endpoint).new(*args, &block) : super
end
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.run_before_each(endpoint) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 28
def run_before_each(endpoint)
superclass.run_before_each(endpoint) unless self == Endpoint
before_each.each { |blk| blk.call(endpoint) if blk.respond_to?(:call) }
end
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Instance Method Details
#call(env) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 219
def call(env)
lazy_initialize!
dup.call!(env)
end
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#call!(env) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 224
def call!(env)
env[Grape::Env::API_ENDPOINT] = self
@env = env
@app.call(env)
end
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#endpoints ⇒ Object
Return the collection of endpoints within this endpoint. This is the case when an Grape::API mounts another Grape::API.
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# File 'lib/grape/endpoint.rb', line 232
def endpoints
options[:app].endpoints if options[:app] && options[:app].respond_to?(:endpoints)
end
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#equals?(e) ⇒ Boolean
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# File 'lib/grape/endpoint.rb', line 236
def equals?(e)
(options == e.options) && (inheritable_setting.to_hash == e.inheritable_setting.to_hash)
end
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#inherit_settings(namespace_stackable) ⇒ Object
Update our settings from a given set of stackable parameters. Used when the endpoint’s API is mounted under another one.
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# File 'lib/grape/endpoint.rb', line 112
def inherit_settings(namespace_stackable)
inheritable_setting.route[:saved_validations] += namespace_stackable[:validations]
parent_declared_params = namespace_stackable[:declared_params]
if parent_declared_params
inheritable_setting.route[:declared_params] ||= []
inheritable_setting.route[:declared_params].concat(parent_declared_params.flatten)
end
endpoints && endpoints.each { |e| e.inherit_settings(namespace_stackable) }
end
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#map_routes ⇒ Object
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# File 'lib/grape/endpoint.rb', line 206
def map_routes
options[:method].map { |method| options[:path].map { |path| yield method, path } }
end
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#merge_route_options(**default) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 202
def merge_route_options(**default)
options[:route_options].clone.merge(**default)
end
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#method_name ⇒ Object
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# File 'lib/grape/endpoint.rb', line 128
def method_name
[options[:method],
Namespace.joined_space(namespace_stackable(:namespace)),
(namespace_stackable(:mount_path) || []).join('/'),
options[:path].join('/')]
.join(' ')
end
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#mount_in(router) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 146
def mount_in(router)
if endpoints
endpoints.each { |e| e.mount_in(router) }
else
reset_routes!
routes.each do |route|
methods = [route.request_method]
if !namespace_inheritable(:do_not_route_head) && route.request_method == Grape::Http::Headers::GET
methods << Grape::Http::Headers::HEAD
end
methods.each do |method|
unless route.request_method.to_s.upcase == method
route = Grape::Router::Route.new(method, route.origin, route.attributes.to_h)
end
router.append(route.apply(self))
end
end
end
end
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#namespace ⇒ Object
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# File 'lib/grape/endpoint.rb', line 215
def namespace
@namespace ||= Namespace.joined_space_path(namespace_stackable(:namespace))
end
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#prepare_default_route_attributes ⇒ Object
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# File 'lib/grape/endpoint.rb', line 184
def prepare_default_route_attributes
{
namespace: namespace,
version: prepare_version,
requirements: prepare_routes_requirements,
prefix: namespace_inheritable(:root_prefix),
anchor: options[:route_options].fetch(:anchor, true),
settings: inheritable_setting.route.except(:saved_declared_params, :saved_validations),
forward_match: options[:forward_match]
}
end
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#prepare_path(path) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 210
def prepare_path(path)
path_settings = inheritable_setting.to_hash[:namespace_stackable].merge(inheritable_setting.to_hash[:namespace_inheritable])
Path.prepare(path, namespace, path_settings)
end
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#prepare_routes_requirements ⇒ Object
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# File 'lib/grape/endpoint.rb', line 176
def prepare_routes_requirements
endpoint_requirements = options[:route_options][:requirements] || {}
all_requirements = (namespace_stackable(:namespace).map(&:requirements) << endpoint_requirements)
all_requirements.reduce({}) do |base_requirements, single_requirements|
base_requirements.merge!(single_requirements)
end
end
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#prepare_version ⇒ Object
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# File 'lib/grape/endpoint.rb', line 196
def prepare_version
version = namespace_inheritable(:version) || []
return if version.empty?
version.length == 1 ? version.first.to_s : version
end
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#require_option(options, key) ⇒ Object
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# File 'lib/grape/endpoint.rb', line 124
def require_option(options, key)
raise Grape::Exceptions::MissingOption.new(key) unless options.key?(key)
end
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#reset_routes! ⇒ Object
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# File 'lib/grape/endpoint.rb', line 140
def reset_routes!
endpoints.each(&:reset_routes!) if endpoints
@namespace = nil
@routes = nil
end
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#routes ⇒ Object
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# File 'lib/grape/endpoint.rb', line 136
def routes
@routes ||= endpoints ? endpoints.collect(&:routes).flatten : to_routes
end
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#to_routes ⇒ Object
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# File 'lib/grape/endpoint.rb', line 166
def to_routes
route_options = prepare_default_route_attributes
map_routes do |method, path|
path = prepare_path(path)
params = merge_route_options(route_options.merge(suffix: path.suffix))
route = Router::Route.new(method, path.path, params)
route.apply(self)
end.flatten
end
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