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#
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright 2010-2016, 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 "rubygems"
require "webrick"
require "webrick/https"
require "rack"
#require 'thin'
require "singleton"
require "open-uri"
require "chef/config"
module TinyServer
class Server < Rack::Server
attr_writer :app
def self.setup(options = nil, &block)
tiny_app = new(options)
app_code = Rack::Builder.new(&block).to_app
tiny_app.app = app_code
tiny_app
end
def shutdown
server.shutdown
end
end
class Manager
# 5 == debug, 3 == warning
LOGGER = WEBrick::Log.new(STDOUT, 3)
DEFAULT_OPTIONS = {
:server => "webrick",
:Port => 9000,
:Host => "localhost",
:environment => :none,
:Logger => LOGGER,
:AccessLog => [] # Remove this option to enable the access log when debugging.
}
def initialize(options = nil)
@options = options ? DEFAULT_OPTIONS.merge(options) : DEFAULT_OPTIONS
@creator = caller.first
end
def start
@server_thread = Thread.new do
@server = Server.setup(@options) do
run API.instance
end
@old_handler = trap(:INT, "EXIT")
@server.start
end
block_until_started
trap(:INT, @old_handler)
end
def url
"http://localhost:#{@options[:Port]}"
end
def block_until_started
200.times do
if started? && !@server.nil?
return true
end
end
raise "ivar weirdness" if started? && @server.nil?
raise "TinyServer failed to boot :/"
end
def started?
open(url)
true
rescue OpenURI::HTTPError
true
rescue Errno::ECONNREFUSED, EOFError, Errno::ECONNRESET => e
sleep 0.1
true
# If the host has ":::1 localhost" in its hosts file and if IPv6
# is not enabled we can get NetworkUnreachable exception...
rescue Errno::ENETUNREACH, Net::ReadTimeout, IO::EAGAINWaitReadable,
Errno::EHOSTUNREACH => e
sleep 0.1
false
end
def stop
# yes, this is terrible.
@server.shutdown
@server_thread.kill
@server_thread.join
@server_thread = nil
end
end
class API
include Singleton
GET = "GET"
PUT = "PUT"
POST = "POST"
DELETE = "DELETE"
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" }
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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