feat: support restify v9-v11

[6utt3rfly]

Fixes #1488

(see also #1250 for reference)

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[punya]

@6utt3rfly, thanks for the contribution. Please take a look at the test failures. For example,

  1) Web framework tracing
       Tracing restify@9
         "before all" hook for "accurately measures get time (1 handler)":

      AssertionError [ERR_ASSERTION]: Handler [handler-0 on GET /one-handler] accepts a third argument (the 'next" callback) but is also an async function. Middleware handlers can be either async/await or callback-based. Async handler functions should accept maximum of 2 arguments: (req, res). Non-async handlers should accept three arguments: (req, res, next).
      + expected - actual


      at Chain.add (test/plugins/fixtures/restify9/node_modules/restify/lib/chain.js:91:16)
      at forEach (test/plugins/fixtures/restify9/node_modules/restify/lib/router.js:211:15)
      at Array.forEach (<anonymous>)
      at Router.mount (test/plugins/fixtures/restify9/node_modules/restify/lib/router.js:203:14)
      at Server.serverMethod [as get] (test/plugins/fixtures/restify9/node_modules/restify/lib/server.js:1750:33)
      at _a.addHandler (/home/runner/work/cloud-trace-nodejs/cloud-trace-nodejs/test/web-frameworks/restify.ts:38:19)
      at Context.<anonymous> (/home/runner/work/cloud-trace-nodejs/cloud-trace-nodejs/test/test-trace-web-frameworks.ts:113:22)
      at processImmediate (node:internal/timers:466:21)
      at process.topLevelDomainCallback (node:domain:161:15)
      at process.callbackTrampoline (node:internal/async_hooks:128:24)

Could you confirm whether you've tested this change locally, and with what versions?

[6utt3rfly]

@punya - I had trouble running local unit tests until I saw this PR's build log and realized I needed docker images running (or TRACE_TEST_EXCLUDE_INTEGRATION set). It might be worth adding something to the CONTRIBUTING.md file?

The existing restify plugin works if I manually patch the SUPPORTED_VERSIONS. I've pushed a commit to fix the failing unit test by avoiding async (req, res, next), which breaks in restify 9+

[punya]

Thanks for looking into it @6utt3rfly! I have a couple of small suggestions, but otherwise this looks good to me.

[6utt3rfly]

Thanks for looking into it @6utt3rfly! I have a couple of small suggestions, but otherwise this looks good to me.

I actually hadn't noticed .then accepts both resolve and reject, and thought it was only in new Promise(resolve, reject), so I like your suggestion!

[punya]

I see some lint failures that should be easy to fix:

/home/runner/work/cloud-trace-nodejs/cloud-trace-nodejs/test/web-frameworks/restify.ts
Warning:   20:3   warning  'WebFrameworkResponse' is defined but never used  @typescript-eslint/no-unused-vars
Error:   41:17  error    Replace `(response)` with `response`              prettier/prettier

But there are also several failing tests (starting at https://github.com/googleapis/cloud-trace-nodejs/actions/runs/4694210640/jobs/8322181339?pr=1489#step:7:2986) that I don't understand.

Reading the Restify docs in some more detail, I'm not sure that we're supposed to use 3-argument handlers with Promises (regardless of whether we use async/await syntax to generate the Promise).

I wonder if it might be necessary to have totally different code paths for Restify <= v8 and Restify >= v9.

[6utt3rfly]

@punya - Cannot find node module 'node:process' seems to indicate a node compatibility issue with restify (even though their release notes indicate node 10 and 12 support). Are you okay with restricting the unit tests to node 14+ (see commit)?

[6utt3rfly]

@punya - I'm not sure why the release action hanged (5h 58m!), because it looks like everything passed, but then it didn't get the coverage

vs the PR test:

... maybe worth just retrying that job?