Class: Rack::HttpRouter::Router

Inherits:
Object
  • Object
show all
Defined in:
lib/rack-http_router/router.rb,
lib/rack-http_router/router/route.rb,
lib/rack-http_router/router/build_request.rb

Defined Under Namespace

Classes: BuildRequest, Route, UndefinedNamedRoute

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = {}) ⇒ Router

Returns a new instance of Router.



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# File 'lib/rack-http_router/router.rb', line 12

def initialize(config = {})
  @routes = {}
  %w[GET POST DELETE PUT TRACE OPTIONS PATCH].each do |method|
    @routes[method] = { __instances: [] }
  end
  @route =
    Hash.new do |_hash, key|
      raise(UndefinedNamedRoute, "Undefined named route: '#{key}'")
    end
  @config = config
  @scopes = []
  @befores = []
  @scopes_befores = {}
  @error = proc { |_req, e| raise e }
  @not_found = proc { [404, {}, ['Not found']] }
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/rack-http_router/router.rb', line 10

def config
  @config
end

#not_found=(value) ⇒ Object (writeonly)

Sets the attribute not_found

Parameters:

  • value —

    the value to set the attribute not_found to.



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# File 'lib/rack-http_router/router.rb', line 9

def not_found=(value)
  @not_found = value
end

#route ⇒ Object (readonly)

Returns the value of attribute route.



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# File 'lib/rack-http_router/router.rb', line 10

def route
  @route
end

Instance Method Details

#add(method, path, endpoint, as = nil) ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 64

def add(method, path, endpoint, as = nil)
  method = :get if method == :head

  path_with_scopes = "/#{@scopes.join('/')}#{put_path_slash(path)}"
  @route[as] = path_with_scopes if as

  route_instance = Route.new(path_with_scopes, endpoint, @befores)

  if @scopes.size >= 1
    return push_to_scope(method.to_s.upcase, route_instance)
  end

  @routes[method.to_s.upcase][:__instances].push(route_instance)
end

#add_error(endpoint) ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 83

def add_error(endpoint)
  @error = endpoint
end

#add_not_found(endpoint) ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 79

def add_not_found(endpoint)
  @not_found = endpoint
end

#append_scope(name, befores = []) ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 87

def append_scope(name, befores = [])
  @scopes.push(name)
  befores = [befores] unless befores.is_a?(Array)
  @befores.concat(befores)
  @scopes_befores[name] = befores
end

#call(env) ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 29

def call(env)
  request_builder = BuildRequest.new(env)
  env['REQUEST_METHOD'] = 'GET' if env['REQUEST_METHOD'] == 'HEAD'

  route_instance = match_route(env)

  return render_not_found(request_builder.call) if route_instance.nil?

  rack_request = request_builder.call(route_instance)

  befores = route_instance.befores
  before_result = nil
  i = 0
  while i < befores.size
    before_result = call_endpoint(befores[i], rack_request)
    return before_result unless before_result.is_a?(Rack::Request)

    i += 1
  end

  call_endpoint(route_instance.endpoint, before_result || rack_request)
rescue Exception => e
  @error.call(request_builder.call, e)
end

#call_endpoint(endpoint, rack_request) ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 54

def call_endpoint(endpoint, rack_request)
  return endpoint.call(rack_request) if endpoint.respond_to?(:call)

  if endpoint.include?(Rack::HttpRouter::Action)
    return endpoint.new(route: @route, config: @config).call(rack_request)
  end

  endpoint.new.call(rack_request)
end

#clear_last_scope ⇒ Object 



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# File 'lib/rack-http_router/router.rb', line 94

def clear_last_scope
  @befores -= @scopes_befores[@scopes.last]
  @scopes = @scopes.first(@scopes.size - 1)
end