Class: Rackr::Router

Inherits:
Object
  • Object
show all
Defined in:
lib/rackr/router.rb,
lib/rackr/router/route.rb,
lib/rackr/router/errors.rb,
lib/rackr/router/build_request.rb

Defined Under Namespace

Modules: Errors Classes: BuildRequest, Route

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = {}, before: [], after: []) ⇒ Router

Returns a new instance of Router.



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# File 'lib/rackr/router.rb', line 12

def initialize(config = {}, before: [], after: [])
  @routes = {}
  %w[GET POST DELETE PUT TRACE OPTIONS PATCH].each do |method|
    @routes[method] = { __instances: [] }
  end
  @route =
    Hash.new do |_hash, key|
      raise(Errors::UndefinedNamedRouteError, "Undefined named route: '#{key}'")
    end
  @config = config
  @branches = []
  @befores = ensure_array(before)
  @branches_befores = {}
  @afters = ensure_array(after)
  @branches_afters = {}
  @nameds_as = []
  @branches_named_as = {}
  @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/rackr/router.rb', line 10

def config
  @config
end

#not_found=(value) ⇒ Object (writeonly)

Sets the attribute not_found

Parameters:

  • the value to set the attribute not_found to.



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# File 'lib/rackr/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/rackr/router.rb', line 10

def route
  @route
end

Instance Method Details

#add(method, path, endpoint, as: nil, route_befores: [], route_afters: []) ⇒ Object 



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# File 'lib/rackr/router.rb', line 71

def add(method, path, endpoint, as: nil, route_befores: [], route_afters: [])
  Errors.check_path(path)
  Errors.check_endpoint(endpoint, path)
  Errors.check_as(as, path)
  Errors.check_callbacks(route_befores, path)
  Errors.check_callbacks(route_afters, path)

  method = :get if method == :head

  path_with_branches = "/#{@branches.join('/')}#{put_path_slash(path)}"
  add_named_route(path_with_branches, as)

  route_instance =
    Route.new(
      path_with_branches,
      endpoint,
      befores: @befores + ensure_array(route_befores),
      afters: @afters + ensure_array(route_afters)
    )

  return push_to_branch(method.to_s.upcase, route_instance) if @branches.size >= 1

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

#add_error(endpoint) ⇒ Object 



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# File 'lib/rackr/router.rb', line 102

def add_error(endpoint)
  Errors.check_endpoint(endpoint, 'error')

  @error = endpoint
end

#add_not_found(endpoint) ⇒ Object 



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# File 'lib/rackr/router.rb', line 96

def add_not_found(endpoint)
  Errors.check_endpoint(endpoint, 'not_found')

  @not_found = endpoint
end

#append_branch(name, branch_befores: [], branch_afters: [], as: nil) ⇒ Object 



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# File 'lib/rackr/router.rb', line 108

def append_branch(name, branch_befores: [], branch_afters: [], as: nil)
  Errors.check_branch_name(name)
  Errors.check_as(as, @branches.join('/'))
  Errors.check_callbacks(branch_befores, name)
  Errors.check_callbacks(branch_afters, name)

  @branches.push(name)

  branch_befores = ensure_array(branch_befores)
  @befores.concat(branch_befores)
  @branches_befores[name] = branch_befores

  branch_afters = ensure_array(branch_afters)
  @afters.concat(branch_afters)
  @branches_afters[name] = branch_afters

  @nameds_as.push(as)
  @branches_named_as[name] = as
end

#call(env) ⇒ Object 



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# File 'lib/rackr/router.rb', line 33

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)

    rack_request = before_result

    i += 1
  end

  endpoint_result = call_endpoint(route_instance.endpoint, before_result || rack_request)

  afters = route_instance.afters
  i = 0
  while i < afters.size
    call_endpoint(afters[i], endpoint_result)
    i += 1
  end

  endpoint_result
rescue Rackr::NotFound
  render_not_found(request_builder.call)
rescue Exception => e
  @error.call(request_builder.call, e)
end

#clear_last_branch ⇒ Object 



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# File 'lib/rackr/router.rb', line 128

def clear_last_branch
  @befores -= @branches_befores[@branches.last]
  @afters -= @branches_afters[@branches.last]
  @nameds_as -= [@branches_named_as[@branches.last]]
  @branches = @branches.first(@branches.size - 1)
end