From c77cf83f8db5acc9377833e32dcd81a0071265ec Mon Sep 17 00:00:00 2001 From: Dave Shawley Date: Mon, 20 Feb 2017 08:00:40 -0500 Subject: [PATCH] Add a little more info to the README. --- README.rst | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/README.rst b/README.rst index ba8d271..d557a01 100644 --- a/README.rst +++ b/README.rst @@ -25,6 +25,10 @@ packages because they are actually more trouble than they are worth. Simplest Example ================ +The simplest example is a JSON payload that contains directly configured +information. The application name and version is passed through the +``URLSpec`` keyword arguments to the status handler. + .. code-block:: python from tornado import ioloop, web @@ -46,6 +50,52 @@ Simplest Example except KeyboardInterrupt: iol.stop() +Running this application and retrieving the ``/status`` resource returns +the following: + +.. code-block:: http + + HTTP/1.1 200 OK + Content-Length: 62 + Etag: "e7bca140bba5af0fdb7b9e4fab6487186d7739d2" + Content-Type: application/json + Server: TornadoServer/4.4.2 + Date: Mon, 20 Feb 2017 12:54:47 GMT + + {"status": "ok", "version": "1.1.1", "name": "my-app-name"} + +Python Packaged Application +=========================== +If your application is a python package, then you can let the status +handler do the work of looking up your application's name and version +number from the python package metadata. + +.. code-block:: python + + from tornado import ioloop, web + import sprockets_status.handlers + + def make_app(**settings): + return web.Application([ + web.url('/status', sprockets_status.handlers.StatusHandler, + {'package': 'my-app'}), + # add your handlers here + ], **settings) + + if __name__ == '__main__': + app = make_app() + iol = ioloop.IOLoop.current() + try: + app.listen(8888) + iol.start() + except KeyboardInterrupt: + iol.stop() + +The status handler will use ``pkg_resources`` to look up the named +distribution and retrieve the package name and version for you. If you +give it a package that doesn't exist, then it will return a server error +so don't do that. + Developer Quickstart ==================== .. code-block:: bash