PHP

Upon testing some new functionality locally, I noticed that I was getting my favorite error, 502 Bad Gateway.

I had a look at the error logs in ~/.config/valet/Log/nginx-error.log and found this grouping of errors:

2023/11/17 13:42:09 [error] 89485#0: *1 connect() to unix:/Users/jbrayton/.config/valet/valet.sock failed (61: Connection refused) while connecting to upstream, client: 127.0.0.1, server: stripe-sync.test, request: "GET / HTTP/2.0", upstream: "fastcgi://unix:/Users/jbrayton/.config/valet/valet.sock:", host: "stripe-sync.test"
2023/11/17 13:43:21 [error] 89483#0: *12 connect() to unix:/Users/jbrayton/.config/valet/valet.sock failed (61: Connection refused) while connecting to upstream, client: 127.0.0.1, server: stripe-sync.test, request: "GET / HTTP/2.0", upstream: "fastcgi://unix:/Users/jbrayton/.config/valet/valet.sock:", host: "stripe-sync.test"
2023/11/17 13:45:54 [error] 89476#0: *44 connect() to unix:/Users/jbrayton/.config/valet/valet.sock failed (61: Connection refused) while connecting to upstream, client: 127.0.0.1, server: stripe-sync.test, request: "GET / HTTP/2.0", upstream: "fastcgi://unix:/Users/jbrayton/.config/valet/valet.sock:", host: "stripe-sync.test"
2023/11/17 13:51:39 [error] 89471#0: *49 connect() to unix:/Users/jbrayton/.config/valet/valet.sock failed (61: Connection refused) while connecting to upstream, client: 127.0.0.1, server: larajobs-menubar.test, request: "GET / HTTP/2.0", upstream: "fastcgi://unix:/Users/jbrayton/.config/valet/valet.sock:", host: "larajobs-menubar.test"

I performed a generic Google search for nginx "*12 connect()" to unix Nothing hit me directly but it did highlight the excellent primer on Datadog NGINX 502 Bad Gateway: PHP-FPM I ran valet links to get a list of other sites to try to see if this was isolated to a PHP version and it was, PHP 8.2 was the only one having problems. I had tried valet restart and valet restart php but that didn't help. I wanted to check the status of services to make sure they were running and we can do that via valet status:

Checking status...

Valet status: Error

+--------------------------------------+----------+
| Check                                | Success? |
+--------------------------------------+----------+
| Is Valet fully installed?            | Yes      |
| Is Valet config valid?               | Yes      |
| Is Homebrew installed?               | Yes      |
| Is DnsMasq installed?                | Yes      |
| Is Dnsmasq running?                  | Yes      |
| Is Dnsmasq running as root?          | Yes      |
| Is Nginx installed?                  | Yes      |
| Is Nginx running?                    | Yes      |
| Is Nginx running as root?            | Yes      |
| Is PHP installed?                    | Yes      |
| Is linked PHP (php) running?         | No       |
| Is linked PHP (php) running as root? | No       |
| Is valet.sock present?               | Yes      |
+--------------------------------------+----------+

Debug suggestions:
Run `valet restart`.
Uninstall PHP with Brew and run `valet use php@8.2`

I ended up using valet use php@8.2 --force in the end:

⋊> brew uninstall php
Error: Refusing to uninstall /usr/local/Cellar/php/8.2.11
because it is required by composer, php-cs-fixer and wp-cli, which are currently installed.
You can override this and force removal with:
  brew uninstall --ignore-dependencies php
⋊> valet use php@8.2
Valet is already using version: php@8.2. To re-link and re-configure use the --force parameter.

⋊> valet use php@8.2 --force
Unlinking current version: php
Linking new version: php@8.2
Stopping phpfpm...
Stopping php@7.2...
Stopping php@8.1...
Installing and configuring phpfpm...
Updating PHP configuration for php@8.2...
Restarting php@8.1...
Restarting php@7.1...
Restarting php@7.4...
Restarting php@7.2...
Restarting php@7.3...
Restarting php...
Restarting nginx...
Valet is now using php@8.2.

Note that you might need to run composer global update if your PHP version change affects the dependencies of global packages required by Composer.

The stop messages not aligning with the restarts is particularly interesting and likely part of what I was dealing with. I hadn't tried sites tied to each version independently.

Due to a comment on Hacker News (original post here), I thought I would put my money where my mouth was, so to speak, and tackle this problem in a public repository.

My comment could likely be seen as dismissive or arrogant. I get that. My biggest problem is that because people still fail, this is the interview equivalent of patty cake: awkward, childish, and unrewarding (unless you're a 2 year old).
To be quite honest, I don't quite understand my disdain for the problem. It's simple enough that it can be solved a number of ways quickly and gets you to express at least the fundamentals of development in a particular language.

This exercise is an excellent opportunity for a number of things:

1. It'll be a form of code kata and I need practice, even on something I dislike greatly.
2. Much of my work isn't public, as I often rarely see the benefit of my specific ideas being shared. I don't need to prove anything by doing this but I don't see this hurting anything.

3. If you believe my time tracking is accurate, it should demonstrate at least some proficiency in languages I know and how quickly I can at least have a basic understanding of the ones I don't.

   1. My proficiency in order is C#, PowerShell, Javascript, PHP, Pascal, then Ruby. The latter 3 don't rattle around in my brain as much as the former.
   2. F#, Objective-C, CoffeeScript, C/C++, Go, Dart, and Haskell are the planned languages I've mostly touched in passing or know about.
4. This would be a good opportunity to write tests to check the work. A neutral 3rd party would be ideal as the tests could influence the experiment.
5. It'll also give insight into my habits regarding structure and clean, concise code. I prefer readable code with very little comments because I feel the code itself should be the comment. This largely isn't possible in most code bases but it shouldn't really be a problem here.
6. To prove to myself that I don't just take examples from Google and make them my own, that I can start from scratch when I need to.

Note: I'm using https://rosettacode.org/wiki/FizzBuzz as a language guide only. If you see me follow a specific example, punch me in the nuts.

The best description of the problem can be found here, specifically (altered for this example):

Write a program that prints the numbers from 1 to 100. But for multiples of three print "Jazz" instead of the number and for the multiples of five print "Hands". For numbers which are multiples of both three and five print "JazzHands".

This brings up some excellent points. I'm definitely not above FizzBuzz or live coding but I still can't pinpoint why I have beef with this particular problem.

I honestly can't remember the last time I've actually tackled this problem so the potential to look really foolish, at least at the beginning, is pretty high.