tbnl-devel

tbnl-devel@common-lisp.net

865 discussions

[tbnl-devel] Bug report: no logging with stand-alone SBCL
by Jason Dunsmore 03 Aug '06

03 Aug '06

I tried setting up logging in TBNL 0.9.10 with stand-alone SBCL 0.9.14 by setting *log-lisp-backtraces-p*, *use-apache-log*, *log-lisp-warnings-p*, and *log-lisp-errors-p* to T and setting (log-file) to "/tmp/tbnl.log", but nothing is logged in the Apache error log file or in /tmp/tbnl.log. After I set *show-lisp-backtraces-p* to T, I am able to see the backtrace in the web browser, but still nothing is logged. When I use this configuration with TBNL and mod_lisp + Apache, backtraces are logged in the Apache error log file. Jason

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[tbnl-devel] customisation
by quasi 07 Jul '06

07 Jul '06

Hey, I have deployed a lisp web site app. :) It runs pretty nicely. I am using CMUCL 19c and TBNL 0.9.10. Some of the dynamic pages service 45pages/sec at concurrency of 1000 (ab benchmark). thanks Edi for TBNL and the CMUCL folks for CMUCL. I need now to customize some things. I need to desperately get rid of the Internal Server Error page. If someone types in a url part of which triggers a prefix dispatcher then we get this simple "Internal Server Error" page with a info string at the bottom. I need to change both of these. Any pointers on how to do these things? I redefined the tbnl::tbnl-info-string in my source. Now I get my output string AND the original tbnl string. thanks, -- quasi Utopia Unlimited!

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[tbnl-devel] Re: Quick Question about Dispatch Handlers in TBNL
by Edi Weitz 06 Jul '06

06 Jul '06

Hi! Please use the mailing list for questions about TBNL. On Wed, 5 Jul 2006 22:55:08 -0500, Cameron Desautels <cam(a)apt2324.com> wrote: > I have a quick question about TBNL that I am hoping you wouldn't > mind helping me with. > > I'm a little surprised to see that TBNL does not contain a function > which creates a dispatcher that matches an exact string (rather than > a prefix or a regexp). Perhaps something like this?: > > (defun create-static-dispatcher (str page-function) > "A convenience function which will return a dispatch function > which will return `page-function' whenever the path portion of > the URI matches the string `str'." > (lambda (request) > (if (string= (script-name request) str) > page-function))) > > I'm somewhat curious what the reason for this omission is. Is it > because the same functionality can be achieved with > create-regex-dispatcher given a string with no wildcards? Certainly > that method would be less efficient and isn't as (logically) clear. > Am I missing something? > > Your enlightening reply is appreciated. I've never needed such a function, but as you demonstrate above it is trivial to build it yourself. I could add it to the next release if people feel that it's a worthwhile contribution. Concerning your remark about efficiency: Do you really think that the speed difference between a regex scan and a string comparison (if there is one) would be noticable in a web application? Cheers, Edi.

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[tbnl-devel] Strange encoding problems with SBCL and TBNL
by Dan Beauchesne 05 Jul '06

05 Jul '06

Hi list, I'm running SBCL 0.9.13.52 (same error with 0.9.13 release) and TBNL 0.9.10. I've got a simple page set up that I need to simply print the return value of an external function. That function returns a list containing UTF-8 characters. I've set *show-lisp-errors-p* to T, here is the error: encoding error on stream #<SB-SYS:FD-STREAM for "standard output" {A6877B9}> (:EXTERNAL-FORMAT :ASCII): the character with code 20170 cannot be encoded. I had done some digging on google and found someone in a similar situation with TBNL, and he tried changing his locale LC_ALL to a utf-8 one. The above (:EXTERNAL-FORMAT :ASCII part was :ASCII only after I set my locale to UTF-8, beforehand it was :LATIN-1, which I do not understand. Here is the code, if it helps: (in-package :tbnl-foo) (setq *dispatch-table* (list (create-prefix-dispatcher "/tbnl/foo" 'foo) 'default-dispatcher)) (defun foo () (let ((foo (jalat::search-hash "hello"))) (with-html-output (*standard-output*) (:h2 (str foo))))) (setq *dispatch-table* (nconc (mapcar (lambda (args) (apply #'create-prefix-dispatcher args)) '(("/tbnl/test/" foo))) (list #'default-dispatcher))) The external function simply returns a list of plists containing UTF-8 characters. I also tried setting *tbnl-default-external-format* to no avail. Thanks guys, -- Dan Beauchesne dbeauchesne -at- gmail -dot- com

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[tbnl-devel] faking *request* for testing
by Austin Haas 14 Jun '06

14 Jun '06

Does anyone know of a way to fake a *request* to test a handler? The browser is crashing on a particular response, so it would be nice to be able to see the response in Slime. Thanks. -austin

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[tbnl-devel] load balancing and TBNL
by quasi 12 Jun '06

12 Jun '06

Hey folks, I know this is not strictly TBNL related. But I guess you folks could have a suggestion. I have Apache2+mod_lisp2+TBNL running on CMUCL. There are several differnt types of page generating functions. Some very heavy computationally, some light. I am able to get ~200req/sec for the lighter ones with concurrency of 10. The heavy ones do about ~10req/sec. (ab2 benchmark) I want to be able to run different lisp images, now, for load balancing. I had asked on this list earlier and got the solution. I now have different url's mapped to different lisps using the <Location></Location> setting in the apache config. But this has several limaitations. What if I want to have requests for one location go to multiple lisps in some load balancing fashion (e.g. round robin) ? What I wanted to know was, is it possible to have the same url mapped to different TBNL's listening on different ports so that requests are load balanced ? I want to be able to run, say, 5 lisp's all handling requests to mydomain.com/xyz, say. One way I thought this might be done was have different location in the apache config like xyz1, xyz2 etc.etc. each mapped to one lisp and then somehow map xyz to xyz1, xyz2 etc. I dont know how, if, this can be done. I dont even know if this is a good solution. thanks, -- quasi Utopia Unlimited!

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[tbnl-devel] tbnl/mod_lisp memory leak ?
by quasi 30 May '06

30 May '06

Hey, I am using tbnl 0.9.10 and sbcl 0.9.11. I have some functions which generate HTML content using cl-who etc. I have run then through heavy testing and they work fine in the REPL (no memory leakage). As soon as I am calling them via tbnl/mod_lisp the lisp memory usage jumps tremendously. I ran the ab2 benchmark (100 requests with concurrency 1) and the memory usage went from 50Mb to 300Mb+. It then starts swapping. Is this a known problem or am I doing something terribly wrong ? -- quasi Utopia Unlimited!

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[tbnl-devel] Re: TBNL newbie question
by Edi Weitz 25 May '06

25 May '06

Hi! Please use the mailing list. On Thu, 25 May 2006 05:54:19 -0400, "Yarek Kowalik" <yarek.kowalik(a)gmail.com> wrote: > I'm really new to lisp, and definitely new to TBNL. I'm having > trouble getting TBLN respond to Apache, I wonder if you can point me > to where I can get some help. I've been tryhing to figure out how to > make this work for hours, and no luck, and it's getting really late > (3:00 AM). So, maybe you can help me? > > Here is what is happening: > > 1. I setup Apache 2 and it seems to be loading the mod_lisp2.so > module fine, but then Apache it times out (I get 500 error) when > trying to load the tbnl test page. Not sure if TBNL is running OK > (see below), or maybe Apache is misconfigured (unlikely - that seems > easy). Have you added the necessary parts for mod_lisp to the Apache configuration? Note that you can always work in TBNL's "stand-alone" mode to make sure that the problem is not with Apache/mod_lisp. > 2. When I start TBNL, I get the following two errors - does that > matter? > > [1]> (asdf:oos 'asdf:load-op :tbnl-test) > ; loading system definition from /usr/share/common-lisp/systems/tbnl- > test.asd into #<PACKAGE ASDF7345> > ;; Loading file /usr/share/common-lisp/systems/tbnl-test.asd ... > > [...] > > ;; Loading file /var/cache/common-lisp-controller/yarek/clisp/kmrcl/os.fas > ... > ** - Continuable Error > INTERN("PROGRAM-ID"): #<PACKAGE SYSTEM> is locked See below. > If you continue (by typing 'continue'): Ignore the lock and proceed > The following restarts are also available: > RETRY :R1 Retry performing #<ASDF:LOAD-OP NIL #x000333CD05E0> > on #<ASDF:CL-SOURCE-FILE "os" #x000333CCB428>. > ACCEPT :R2 Continue, treating #<ASDF:LOAD-OP NIL > #x000333CD05E0> on #<ASDF:CL-SOURCE-FILE "os" #x000333CCB428> as having been > successful. > ABORT :R3 ABORT > Break 1 KL[2]> continue > > [....] > > ;; Loading file > /var/cache/common-lisp-controller/yarek/clisp/tbnl/test/test.fas ... > *** - OPEN: file > #P"/var/cache/common-lisp-controller/yarek/clisp/tbnl/test/fz.jpg" does not > exist This seems to be a problem with the Debian distribution. > The following restarts are available: > RETRY :R1 Retry performing #<ASDF:LOAD-OP NIL #x000333CBA7A0> > on #<ASDF:CL-SOURCE-FILE "test" #x000333CBC380>. > ACCEPT :R2 Continue, treating #<ASDF:LOAD-OP NIL > #x000333CBA7A0> on #<ASDF:CL-SOURCE-FILE "test" #x000333CBC380> as having > been successful. > ABORT :R3 ABORT > Break 1 TBNL-TEST[3]> accept > 0 errors, 0 warnings > NIL > [4]> (tbnl:start-tbnl) > > 3. After typing "(tbnl:start-tbnl)" I get no clisp prompt - is this > expected, or is it hung? TBNL (or rather KMRCL) does not work with CLISP, see the docs. Try LispWorks, AllegroCL, SBCL, or CMUCL. Cheers, Edi.

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[tbnl-devel] New version 0.9.10
by Edi Weitz 24 May '06

24 May '06

ChangeLog: Version 0.9.10 2006-05-24 Prepare for LW 5.0 release Download: http://weitz.de/files/tbnl.tar.gz

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Re: [tbnl-devel] send-headers and slow page generation
by Edi Weitz 14 May '06

14 May '06

[Please use the mailing list.] On Sun, 14 May 2006 15:16:49 -0400, Yannick Gingras <ygingras(a)ygingras.net> wrote: > I know when I finished to generate the fast content, is there a way > to pack and send a mod_lisp chunk? Something like FINISH-OUTPUT > would be great. I don't think so. You'll have to modify mod_lisp to get what you want. See the function FlushLispBuffSocket. > Otherwise using Hunchentoot is doable. Note that Hunchentoot only works with LispWorks.

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