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#
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require "webrick"
require "webrick/https"
require "rack"
require "singleton"
require "open-uri"
require "chef/config"
module TinyServer
class Manager
# 5 == debug, 3 == warning
LOGGER = WEBrick::Log.new(STDOUT, 3)
DEFAULT_OPTIONS = {
Port: 9000,
Host: "localhost",
Logger: LOGGER,
# SSLEnable: options[:ssl],
# SSLCertName: [ [ 'CN', WEBrick::Utils::getservername ] ],
AccessLog: [], # Remove this option to enable the access log when debugging.
}.freeze
def initialize(**options)
@options = DEFAULT_OPTIONS.merge(options)
@creator = caller.first
end
attr_reader :options
attr_reader :creator
attr_reader :server
def start(timeout = 5)
raise "Server already started!" if server
# Create the server (but don't start yet)
start_queue = Queue.new
@server = create_server(StartCallback: proc { start_queue << true })
@server_thread = Thread.new do
# Ensure any exceptions will cause the main rspec thread to fail too
Thread.current.abort_on_exception = true
server.start
end
# Wait for the StartCallback to tell us we've started
Timeout.timeout(timeout) do
start_queue.pop
end
end
def stop(timeout = 5)
if server
server.shutdown
@server = nil
end
if server_thread
begin
# Wait for a normal shutdown
server_thread.join(timeout)
rescue
# If it wouldn't shut down normally, kill it.
server_thread.kill
server_thread.join(timeout)
end
@server_thread = nil
end
end
private
attr_reader :server_thread
def create_server(**extra_options)
server = WEBrick::HTTPServer.new(**options, **extra_options)
server.mount("/", Rack::Handler::WEBrick, API.instance)
server
end
end
class API
include Singleton
GET = "GET".freeze
PUT = "PUT".freeze
POST = "POST".freeze
DELETE = "DELETE".freeze
attr_reader :routes
def initialize
clear
end
def clear
@routes = { GET => [], PUT => [], POST => [], DELETE => [] }
end
def get(path, response_code, data = nil, headers = nil, &block)
@routes[GET] << Route.new(path, Response.new(response_code, data, headers, &block))
end
def put(path, response_code, data = nil, headers = nil, &block)
@routes[PUT] << Route.new(path, Response.new(response_code, data, headers, &block))
end
def post(path, response_code, data = nil, headers = nil, &block)
@routes[POST] << Route.new(path, Response.new(response_code, data, headers, &block))
end
def delete(path, response_code, data = nil, headers = nil, &block)
@routes[DELETE] << Route.new(path, Response.new(response_code, data, headers, &block))
end
def call(env)
if response = response_for_request(env)
response.call
else
debug_info = { message: "no data matches the request for #{env["REQUEST_URI"]}",
available_routes: @routes, request: env }
# Uncomment me for glorious debugging
# pp :not_found => debug_info
[404, { "Content-Type" => "application/json" }, [ Chef::JSONCompat.to_json(debug_info) ]]
end
end
def response_for_request(env)
if route = @routes[env["REQUEST_METHOD"]].find { |route| route.matches_request?(env["REQUEST_URI"]) }
route.response
end
end
end
class Route
attr_reader :response
def initialize(path_spec, response)
@path_spec, @response = path_spec, response
end
def matches_request?(uri)
uri = URI.parse(uri).request_uri
@path_spec === uri
end
def to_s
"#{@path_spec} => (#{@response})"
end
end
class Response
HEADERS = { "Content-Type" => "application/json" }.freeze
def initialize(response_code = 200, data = nil, headers = nil, &block)
@response_code, @data = response_code, data
@response_headers = headers ? HEADERS.merge(headers) : HEADERS
@block = block_given? ? block : nil
end
def call
data = @data || @block.call
[@response_code, @response_headers, Array(data)]
end
def to_s
"#{@response_code} => #{(@data || @block)}"
end
end
end
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