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Re: Error From "art work" on Vanilla Artanis Project

From: Jaft
Subject: Re: Error From "art work" on Vanilla Artanis Project
Date: Wed, 19 Feb 2020 19:34:52 +0000 (UTC)

Hey, Nala.

Unfortunately, no luck; I pulled the branch you mentioned and, after building it, I see the changes you made installed but get the below error:

;;; note: source file /usr/bin/art
;;;       newer than compiled /home/pi/.cache/guile/ccache/2.2-LE-4-3.A/usr/bin/art.go
;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
;;;       or pass the --no-auto-compile argument to disable.
;;; compiling /usr/bin/art
;;; compiled /home/pi/.cache/guile/ccache/2.2-LE-4-3.A/usr/bin/art.go
Loading conf/artanis.conf...done.
Session with SIMPLE backend init done!
Loading models...
Loading controllers...
Loading restful API...
Regenerating route cache ...
Server core: ragnarok
Anytime you want to quit just try Ctrl+C, thanks!
          11 (apply-smob/1 #<catch-closure 4dcdf0>)
In ice-9/boot-9.scm:
    705:2 10 (call-with-prompt _ _ #<procedure default-prompt-handle…>)
In ice-9/eval.scm:
    619:8  9 (_ #(#(#<directory (guile-user) 4f6910>)))
In /usr/bin/art:
    42:12  8 (_ _ _)
In artanis/commands/work.scm:
    144:8  7 (work . _)
In artanis/server/ragnarok.scm:
   630:10  6 (establish-http-gateway _)
   450:27  5 (ragnarok-http-gateway-run _)
    420:6  4 (get-one-request-from-clients #<r6rs:record:ragnarok-p…> …)
    218:4  3 (fill-ready-queue-from-service _ #<r6rs:record:ragnarok…>)
In ice-9/boot-9.scm:
   260:13  2 (for-each #<procedure 65c2d0 at artanis/server/ragnaro…> …)
In artanis/server/ragnarok.scm:
   245:16  1 (_ (0 . 1))
In artanis/server/epoll.scm:
   211:12  0 (epoll-ctl 15 _ 0 _ #:check-exists? _)

artanis/server/epoll.scm:211:12: In procedure epoll-ctl:
Throw to key `artanis-err' with args `(500 #<procedure epoll-ctl (epfd op fd event #:key check-exists?)> "~a: ~a" (15 2 0 #f "Bad file descriptor") (9))'.


On Wednesday, February 19, 2020, 4:12:15 AM CST, Nala Ginrut <address@hidden> wrote:

Hi Jaft!
I found there's illogical bug in epoll module, please try fix/epoll-exists-check branch:

If it works then I'll merge ASAP.

To someone who wants to learn about this bug, here's a brief

When a new connection event comes in, the server core (Ragnarok) will
check if it's already in epoll event set:
- yes: Then there should be a existing task and we restore it. But if no task, then we
just drop it. This is the part which raised the error by illogical checking.
- no: Create a new task for this connection.

Thanks for the report!

Best regards.

Jaft writes:

>  Hey, Nala!
> I've actually been running that each time, just to be safe.
> But it's not an old codebase I'm trying out; I downloaded the most recent version of Artanis. ran "art create test", then ran "cd test", and then ran "art work --refresh" and keep having this exact behavior.
> I didn't think this could be a cause of anything but, in case it's helpful, I am running it off of a Raspberry Pi, this time.
> Jonathan    On Monday, February 17, 2020, 6:02:10 AM EST, Nala Ginrut <address@hidden> wrote:
> Hi Jaft!
> If you upgrade Artanis then please run `art work --refresh` at least
> once to make sure all your webapp code been recompiled with the latest
> Artanis.
> You may take a look at the NOTE in the manual:
> Best regards.
> Jaft writes:
>>  Actually, it looks like the first call just hangs (sometimes, until it eventually times out) and a second call is what produces the error.
>> I know, in older versions, just generating a project and running it would produce a page that says an index file should be provided but that Artanis was up and running but I don't know if things have changed, on that front, since last I tried out Artanis and I now need to provide initial files for things to work out of the gate.
>> Jonathan
>>    On Saturday, February 15, 2020, 2:45:45 PM CST, Jaft <address@hidden> wrote:
>>  I had recently downloaded the most recent release of Artanis and was just trying to get a generated project to run (no additional edits – other than changing the port –, like enabling database usage or the like).
>> However, trying to hit the running project results in this error:
>> Loading conf/artanis.conf...done.Session with SIMPLE backend init done!Loading models...Loading controllers...Loading restful API...Regenerating route cache ...Server core: ragnarokhttp:// you want to quit just try Ctrl+C, thanks!Backtrace:          11 (apply-smob/1 #<catch-closure ff83d0>)In ice-9/boot-9.scm:    705:2 10 (call-with-prompt _ _ #<procedure default-prompt-handle…>)In ice-9/eval.scm:    619:8  9 (_ #(#(#<directory (guile-user) 1052910>)))In /usr/bin/art:    42:12  8 (_ _ _)In artanis/commands/work.scm:    144:8  7 (work . _)In artanis/server/ragnarok.scm:  630:10  6 (establish-http-gateway _)  450:27  5 (ragnarok-http-gateway-run _)    420:6  4 (get-one-request-from-clients #<r6rs:record:ragnarok-p…> …)    218:4  3 (fill-ready-queue-from-service _ #<r6rs:record:ragnarok…>)In ice-9/boot-9.scm:  260:13  2 (for-each #<procedure 12f0060 at artanis/server/ragnar…> …)In artanis/server/ragnarok.scm:  245:16  1 (_ (0 . 1))In artanis/server/epoll.scm:    220:4  0 (exists-in-epoll? 15 0)
>> artanis/server/epoll.scm:220:4: In procedure exists-in-epoll?:Throw to key `artanis-err' with args `(500 #<procedure epoll-ctl (epfd op fd event #:key check-exists?)> "~a: ~a" (15 2 0 #f "Bad file descriptor") (9))'.
>> I can't make out the cause so I thought I'd ask.
>> Thank you for any help!
>> Jonathan

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