tbnl-devel May 2005

tbnl-devel@common-lisp.net

3 participants
4 discussions

[tbnl-devel] arbitrary per-request data?
by Zach Beane 17 Sep '05

17 Sep '05

I have an application that has a notion of a current user that is lazily established on a per-request basis. For now, I have been returning a handler that is really a lambda wrapping a real handler that lexically binds the special *current-user*: (defun page-handler (request) (multiple-value-bind (handler foundp) (gethash (script-name request) *handlers*) (when foundp (lambda () (let ((*current-user* *current-user-local-unbound-value*)) (funcall handler)))))) But it occurred to me that there is already the *request* structure. Would it make sense to be able to have a table of arbitrary keys and values in the request structure for application use? I was thinking of an accessor like this: request-data key &optional (request *request*) => value, foundp Then I could write CURRENT-USER something like: (defun current-user () (multiple-value-bind (value foundp) (request-data 'user) (if foundp value (setf (request-data 'user) (cookie-user))))) Right now it's a bit messier than that. What do you think? If this seems reasonable I can work out and submit a patch. Zach

3 5

[tbnl-devel] New version 0.5.0 / Multiple back-ends
by Edi Weitz 17 Aug '05

17 Aug '05

Hi! I've finally found some time to incorporate Bob's changes, test them and document them. I've also changed the logging API and re-factored some of the code. I'm sure I broke something in the process so please test... :) Specifically, I tried to explain in the documentation how TBNL talks with the different back-ends. I also changed the test setup so that it now hopefully adapts to all three back-ends and gives new users a chance to understand how TBNL works. While testing the "stand-alone" version I had some problems with MS Internet Explorer but I /think/ I've nailed them down now. Note that some of the changes in 0.5.0 might break API compatibility with earlier versions so be careful if you use this release for an existing deployment of TBNL and resort to the docs if in doubt. Special thanks to Bob Hutchison who made this all possible! Download: <http://weitz.de/files/tbnl.tar.gz>. Have fun, Edi.

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[tbnl-devel] Problem while starting TBNL
by Peter BARABAS 22 May '05

22 May '05

Greetings, I've upgraded TBNL and SBCL and have faced a problem. This is how I load TBNL: (asdf:operate 'asdf:load-op 'tbnl) (asdf:oos 'asdf:load-op :tbnl-test) (tbnl:start-tbnl) Error while trying to start listener on port 3000 Can't create a new thread I don't even get dropped in the debugger. I'm using SBCL 0.9.0.19 under Linux 2.4.27. *FEATURES*: (:ASDF :SB-FUTEX :SB-THREAD :ANSI-CL :COMMON-LISP :SBCL :UNIX :SB-DOC :SB-TEST :SB-PACKAGE-LOCKS :SB-UNICODE :IEEE-FLOATING-POINT :X86 :ELF :LINUX :GENCGC :STACK-GROWS-DOWNWARD-NOT-UPWARD :C-STACK-IS-CONTROL-STACK :STACK-ALLOCATABLE-CLOSURES :LINKAGE-TABLE :OS-PROVIDES-DLOPEN :OS-PROVIDES-DLADDR) May that be the problem that SBCL doesn't support threading under 2.4.x, however *FEATURES* does contain :SB-THREAD? Thanks for you help. -- '(Yours parenthetically), peter barabas. ((call/cc call/cc) (call/cc call/cc))

2 1

[tbnl-devel] TBNL stream
by Peter BARABAS 06 May '05

06 May '05

Hello, TBNL expects a string to be returned from the dispatch functions, which it will send to the HTTP client. Is there a stream that I can output my HTML to, to avoid consing? Thank you in advance. -- '(Yours parenthetically), peter barabas. ((call/cc call/cc) (call/cc call/cc))

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tbnl-devel May 2005