[undertow-dev] Undertow extensions library?

[Bill O'Neil]

I had a few ideas I put together and would appreciate some feedback.  A lot
of it revolves around Java 8 but I kept all of the extensions themselves at
Java 7.  The main goal of Java 8 was to make constructing HttpHandlers
easier when you delegate to other handlers.

Example:

Handlers.routing()
            .add(Methods.GET, "/messages", HandlerBuilder
                .create(CustomHandlers.json(Messages::getMessages))
                .wrap(CustomHandlers::timing, "getMessages")
                .wrap(BlockingHandler::new)

             .build())

Here is my branch https://github.com/billoneil/undertow/tree/feature/ext

Here is the entry point to an example that puts it all together.
https://github.com/billoneil/undertow/blob/feature/ext/ext/examples/src/main/java/io/undertow/ext/examples/rest/RestServer.java

Please excuse the boring example I couldn't think of anything interesting.

If you run it locally


curl -X POST localhost:8080/messages/optional -d '{"title": "Optional",
"message": "Using optional"}'
{"success":true}

curl -X POST localhost:8080/messages/lambda -d '{"title": "Lambda",
"message": "Using Lambda"}'
{"success":true}

curl -X POST localhost:8080/messages -d '{"title": "Method References",
"message": "Using method references"}'
{"success":true}

curl -X GET localhost:8080/messages
[

   -
   {
      - title: "Optional",
      - message: "Using optional"
      },
   -
   {
      - title: "Lambda",
      - message: "Using Lambda"
      },
   -
   {
      - title: "Method References",
      - message: "Using method references"
      }

]

curl -X GET localhost:8080/info/metrics
{

   - version: "3.0.0",
   - gauges: { },
   - counters: { },
   - histograms: { },
   - meters:
   {
      - response.status.code.200:
      {
         - count: 8,
         - m15_rate: 21.787938213503697,
         - m1_rate: 6.5304307794735275,
         - m5_rate: 18.017228623496,
         - mean_rate: 4.457584495510739,
         - units: "events/minute"
         }
      },
   - timers:
   {
      - createMessageLambda:
      {
         - count: 1,
         - max: 1.169,
         - mean: 1.169,
         - min: 1.169,
         - p50: 1.169,
         - p75: 1.169,
         - p95: 1.169,
         - p98: 1.169,
         - p99: 1.169,
         - p999: 1.169,
         - stddev: 0,
         - m15_rate: 0.059490549916151686,
         - m1_rate: 0.1812199126454006,
         - m5_rate: 0.14211865026090975,
         - mean_rate: 0.5343847126926461,
         - duration_units: "milliseconds",
         - rate_units: "calls/minute"
         },
      - createMessageMethodReferences:
      {
         - count: 1,
         - max: 0.648,
         - mean: 0.648,
         - min: 0.648,
         - p50: 0.648,
         - p75: 0.648,
         - p95: 0.648,
         - p98: 0.648,
         - p99: 0.648,
         - p999: 0.648,
         - stddev: 0,
         - m15_rate: 0.05982197273776584,
         - m1_rate: 0.19696865690816925,
         - m5_rate: 0.14450714325124409,
         - mean_rate: 0.5343791108783038,
         - duration_units: "milliseconds",
         - rate_units: "calls/minute"
         },
      - createMessageOptional:
      {
         - count: 1,
         - max: 94.579,
         - mean: 94.579,
         - min: 94.579,
         - p50: 94.579,
         - p75: 94.579,
         - p95: 94.579,
         - p98: 94.579,
         - p99: 94.579,
         - p999: 94.579,
         - stddev: 0,
         - m15_rate: 10.678581251856285,
         - m1_rate: 2.0852873214053433,
         - m5_rate: 8.456257076624562,
         - mean_rate: 0.5343875445806129,
         - duration_units: "milliseconds",
         - rate_units: "calls/minute"
         },
      - getMessages:
      {
         - count: 3,
         - max: 9.809999999999999,
         - mean: 3.6413333333333333,
         - min: 0.514,
         - p50: 0.6,
         - p75: 9.809999999999999,
         - p95: 9.809999999999999,
         - p98: 9.809999999999999,
         - p99: 9.809999999999999,
         - p999: 9.809999999999999,
         - stddev: 5.342395093339066,
         - m15_rate: 0.18767034671569677,
         - m1_rate: 1.2185014871528328,
         - m5_rate: 0.49650226189858143,
         - mean_rate: 1.6030845484157583,
         - duration_units: "milliseconds",
         - rate_units: "calls/minute"
         },
      - getMetrics:
      {
         - count: 0,
         - max: 0,
         - mean: 0,
         - min: 0,
         - p50: 0,
         - p75: 0,
         - p95: 0,
         - p98: 0,
         - p99: 0,
         - p999: 0,
         - stddev: 0,
         - m15_rate: 0,
         - m1_rate: 0,
         - m5_rate: 0,
         - mean_rate: 0,
         - duration_units: "milliseconds",
         - rate_units: "calls/minute"
         }
      }

}






On Thu, Jul 3, 2014 at 9:28 AM, Bill O'Neil <bill at dartalley.com> wrote:

> I have mostly just been getting familiar with undertow for side projects.
>  I would be happy to share anything I come up with though to get some
> feedback.
>
>
> On Wed, Jul 2, 2014 at 10:44 AM, Jason Greene <jason.greene at redhat.com>
> wrote:
>
>> On Jul 2, 2014, at 9:02 AM, Bill O'Neil <bill at dartalley.com> wrote:
>>
>> > Is there any plan to open up an undertow-ext library where the
>> community can make small modules that hook into 3rd party dependencies?
>>  For example, an HttpHandler that uses Jackson/Gson to serialize to json
>> and set appropriate headers, or an HTML templating framework for rendering
>> HTML.
>> >
>> > Would you prefer these to be hosted by 3rd parties instead?
>>
>> I think this is a great idea. Are you interested in being a maintainer of
>> such a thing?
>>
>> --
>> Jason T. Greene
>> WildFly Lead / JBoss EAP Platform Architect
>> JBoss, a division of Red Hat
>>
>>
>
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