Class: Nuri::Service

Inherits:
WEBrick::HTTPServlet::AbstractServlet
  • Object
show all
Defined in:
lib/naas/naas.rb

Constant Summary collapse

HOME = 
File.expand_path('~/.nuri')
WebDir = 
File.expand_path('.', File.dirname(__FILE__))
WebFiles = 
['index.html', 'index.js', 'index.css', 'jquery.js', 'd3.js']
PIDFile = 
'/tmp/nuri_service.pid'
Log = 
Logger.new(HOME + "/nuri.log")
Port = 
8383
@@enabled = 
false

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server) ⇒ Service

Returns a new instance of Service.



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# File 'lib/naas/naas.rb', line 84

def initialize(server)
	@server = server
	@cache = {}
end

Class Method Details

.pid ⇒ Object 



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# File 'lib/naas/naas.rb', line 80

def self.pid
	(File.exist?(PIDFile) ? File.read(PIDFile).to_i : 1)
end

.start ⇒ Object 



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# File 'lib/naas/naas.rb', line 24

def self.start
	fail "Nuri service is already running with PID #{pid}" if status == :running

	Process.daemon
	Log.info 'starting'
	@@enabled = true

	Signal.trap('HUP') {
		@@enabled = false
		@@server.shutdown if defined?(@@server) and !@@server.nil?
	}

	until not @@enabled do
		begin
			File.open(PIDFile, 'w') { |f| f.write($$.to_s) }

			config = {
				:Port => Port,
				:ServerType => WEBrick::SimpleServer,
				:DirectoryIndex => 'index.html',
				:Logger => Log
			}
			@@server = WEBrick::HTTPServer.new(config)
			@@server.mount "/", Nuri::Service # WEBrick::HTTPServlet::FileHandler, WebDir
			@@server.start

			sleep 1
		rescue Exception => e
			Log.error "#{e}"
			Log.debug e.backtrace.join("\n")
			sleep 10
		end
	end

	Log.info 'stopped'
end

.status ⇒ Object 



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# File 'lib/naas/naas.rb', line 61

def self.status
	begin
		Process.kill 0, pid
		return :running
	rescue
	end
	:stopped
end

.stop ⇒ Object 



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# File 'lib/naas/naas.rb', line 70

def self.stop
	if status == :running
		Log.info 'stopping'
		Process.kill 'HUP', pid
		sleep 5
		system "kill -9 #{pid}" if status == :running
	end
	true
end

Instance Method Details

#do_GET(request, response) ⇒ Object 



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# File 'lib/naas/naas.rb', line 89

def do_GET(request, response)
	status = 404
	content_type = body = ''

	if not trusted?(request)
		status = 403
	else
		case request.path
		when '/'
			status = 200
			content_type = 'text/html'
			@cache[WebFiles[0]] = File.read(WebDir + '/' + WebFiles[0]) if !@cache.has_key?(WebFiles[0])
			body = @cache[WebFiles[0]]
		when '/modules/'
			status, content_type, body = get_modules
		when /^\/.+/
			req = request.path[1, request.path.length-1]
			WebFiles.each do |file|
				if file == req
					status = 200
					case File.extname(file)
					when '.css'
						content_type = 'text/css'
					when '.js'
						content_type = 'application/javascript'
					else
						content_type = 'text/plain'
					end
					@cache[file] = File.read(WebDir + '/' + file) if !@cache.has_key?(file)
					body = @cache[file]
					break
				end
			end
		end
	end

	response.status = status
	response['Content-Type'] = content_type
	response.body = body
end

#get_modules ⇒ Object 



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# File 'lib/naas/naas.rb', line 135

def get_modules
	module_dir = WebDir + '/../../modules'
	modules = Dir.entries(module_dir).select { |entry| File.directory?(File.expand_path(module_dir + '/' + entry)) and !(entry == '.' or entry == '..') }
	[200, 'application/json', JSON.generate({'modules' => modules})]
end

#trusted?(request) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/naas/naas.rb', line 130

def trusted?(request)
	# TODO
	true
end