Embperl vs. Mason
Hi, I made some pages with Embperl, but I don't know Mason. Yesterday a friend told me of Mason, but he does not know Embperl very well. Now I wonder about the pros and cons of each, not only in respect to performance but also general usability, bugs etc. What do more experienced web programmers than I am think about Embperl or Mason? btw: Is the new EmbperlObject somewhat comparable to Mason's component model? Thanks for your comments, Andre
RE: ANNOUNCE: HTML::Embperl 1.3b2
Yes, that makes sense. Perhaps an optional argument for Execute that lists the variables to export? yes, that's what I want to do Actually, there has to be a way to get variables in both directions. Perhaps an export list and an import list in the params to Execute? one list should be enought, because this variables are actually shared in every page, so whereever you change then doesn't matter. They are really global. Yep. I'm kinda thinking of making templates easy to use for newbie engineers. Although specialized variables tend to duplicate things that are in other variables, they are useful for making things easier to use. Yes, of course. I keep it in mind... I realized this, and I definitely like the way you did it. The only thing it doesn't give me is _per page_ "_top.html" files. If you see my example at the top, you see it looks for y/z_top.html first. Aah, I thought this was a typo (and read it as y/z/_top.html) This functionality isn't supported in the path right now. Just a thought: What if the path somehow supported a prefix on filenames? Like if it was "y/z:y/:./", then you tack on the filename after each element in the path. The only problem is that this would require a trailing "/" on true directory names, but if you changed EmbperlObject to generate conforming paths it wouldn't be so much of a problem (I think). Yes, we could add something like this. I really liked this "action" idea when I found out about it, as it solves multi-state responses to forms (error state, success state, etc.) very elegantly. Out of curiosity, what do you typically do for forms? An example might be a registration form where there are required fields. How does your page flow work? For simple pages I have all (form/confirmation/sucess) in one page with just an IF around. For more complex situations (such like wizards on Windows) I have created an small framework which invokes the the correct page (based on the POSTED form data), call functions to verify and keeps track of the data between invocation (in hidden fields). I hope I can write some documatation on it and release it as HTML::Embperl::Wizard. It works very well together with EMbperlObject (for example see http://www.geoconfoman.unibe.ch/ and click on Preregistration) Gerald - Gerald Richterecos electronic communication services gmbh Internetconnect * Webserver/-design/-datenbanken * Consulting Post: Tulpenstrasse 5 D-55276 Dienheim b. Mainz E-Mail: [EMAIL PROTECTED] Voice:+49 6133 925151 WWW:http://www.ecos.de Fax: +49 6133 925152 -
RE: Embperl vs. Mason
Hi, I made some pages with Embperl, but I don't know Mason. Yesterday a friend told me of Mason, but he does not know Embperl very well. Now I wonder about the pros and cons of each, not only in respect to performance but also general usability, bugs etc. What do more experienced web programmers than I am think about Embperl or Mason? Search the modperl mailinglist archive for discussions about that btw: Is the new EmbperlObject somewhat comparable to Mason's component model? Embperl supports components since a long time (via Execute and [$ sub $]). The EmbperlObject is a new way to put components together. If you want to compare EmbperlObject you must compare it with Masons dhandler and autohandler (see www.masonhq.com) Gerald - Gerald Richterecos electronic communication services gmbh Internetconnect * Webserver/-design/-datenbanken * Consulting Post: Tulpenstrasse 5 D-55276 Dienheim b. Mainz E-Mail: [EMAIL PROTECTED] Voice:+49 6133 925151 WWW:http://www.ecos.de Fax: +49 6133 925152 -
Re: Embperl vs. Mason
Andre Landwehr wrote: Hi, I made some pages with Embperl, but I don't know Mason. Yesterday a friend told me of Mason, but he does not know Embperl very well. Now I wonder about the pros and cons of each, not only in respect to performance but also general usability, bugs etc. What do more experienced web programmers than I am think about Embperl or Mason? btw: Is the new EmbperlObject somewhat comparable to Mason's component model? Hi Andre, I am unbiased in that I do not use either, but know about stuff like this since I wrote my own equivalent to these web application environments, which will go unnamed ;) Embperl seems to be more script centric, and Mason seems more site centric, so mental approaches might differ between top down vs. bottom up. I am not meaning to disparage either environment in creating these very rough generalizations, but I believe that their respective talents lie in these directions, such that you might find yourself better enabled creating particular scripts with Embperl, but in creating a master site of sites, Mason might make things better. I can tell you that Embperl is much easier to get going, and has a very powerful set of objects to work with as well as a rich syntax. But the Mason site architecture is very advanced, and promises other features like a great debugger and application publisher. Also, Embperl is a bit faster on startup execution, but this should not matter on a large complex site. Both environments provide expert modularization caching methodologies with Mason's component architecture and Embperl's new object and Execute() routine. -- Joshua _ Joshua Chamas Chamas Enterprises Inc. NodeWorks free web link monitoring Huntington Beach, CA USA http://www.nodeworks.com1-714-625-4051
Re: Embedded Perl XML Extensions ...
On Mon, 14 Feb 2000, Joshua Chamas wrote: XSLT seems to seriously complicate the XML rendering issue, and perhaps unnecessarily? Has it occurred to anyone that XSLT is just another programming language, and one that looks like an HTML doc? There are those who hold that opinion. But because XSLT is a declarative language, you can do far more in a few lines than you can with other languages. Certainly when manipulating document nodes, anyway. -- Matt/ Details: FastNet Software Ltd - XML, Perl, Databases. Tagline: High Performance Web Solutions Web Sites: http://come.to/fastnet http://sergeant.org Available for Consultancy, Contracts and Training.
Cookies
Hello.
I'm trying to write an access handler for Apache -
mod_perl
Inside the handler subI would like to send a
cookie if the access is forbidden. But the following lines doesn't
work:
$r-err_headers_out-add('Set-Cookie'
= $cookie);return FORBIDDEN;
when FORBIDDEN is returned no cookie is sent. I
found this way to send cookies with mod_perl somewhere in the web.
Does anyone know where's the problem? Or is there
another way to send it?
Thx
Francesco
Re: Apache::ASP HTTP's validation model
On Mon, 14 Feb 2000, Joshua Chamas wrote: Aaron Ross wrote: hi Dmitry! Wouldn't it be great it someone came up with a general solution for this... some kind of logical class from which you could inherit and implement the necessary methods. There was an interesting thread about this problem with Mason. I'm sure it's come up before with ASP. The mod_perl guide has a great section on it.. so what's missing for a mod_perl handler? what would it take to make a general solution... Well a general framework. Is that even possible? What if it were just an Apache routine, like the one I proposed for Apache::ASP, $r-last_modified($time) ? Certainly someone could write up a module that defined Apache::last_module like Ken did with his Apache::Filter, it could be Apache::LastModified. Isn't this handled by meets_condition? -- Matt/ Details: FastNet Software Ltd - XML, Perl, Databases. Tagline: High Performance Web Solutions Web Sites: http://come.to/fastnet http://sergeant.org Available for Consultancy, Contracts and Training.
Re: emulating Basic Auth from Mason
On Sun, Feb 13, 2000 at 10:58:40AM -0800, Sean Chittenden wrote:
I'm assuming that you're doing this in an access handler. If
that's the case, set up some condition in your module where it figures out
whether or not the user is authenticated. If the user isn't
authenticated:
return(AUTH_REQUIRED);
That should do it. I don't think that'll return the error page
stating that you need access to continue, instead that should pass a
header (I think two actually) to the browser signaling it to prompt the
user.
Another alternative would be to have the user redirected to a
login page with good old fashion forms. ;) Good luck. --SC
Yes this would be preferable, but I wanted to do this as a mod_perl
understanding exercise.
The required headers to trigger the browser login popup are:
$r-err_header_out('WWW-Authenticate', 'Basic realm="Base de données LNC"');
my ($res, $pw) = $r-get_basic_auth_pw;
and then check for $res and $pw to determine if the user has tried to login
PS If you're really interested in details of this, check out:
http://www.modperl.com/book/chapters/ch6.html
Excellent reference, many thanks for your help!
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.aparima.com
** Hello and Welcome to the Psychiatric Hotline **
If you are paranoid-delusional, we know who you are and what you want
- just stay on the line so we can trace the call.
Re: Cookies
Hi,
I had the same problem the server not sending any cookies.
I don't think it has got to do with the 403 STATUS code:
My Code contains:
# add cookie file to HTTP header
$r-err_headers_out-add('Set-Cookie' = $cookie);
$r-no_cache(1);
# trigger 403 ErrorDocument redirect
return
FORBIDDEN;
My problem was that I tested my handler with the following URL in the
browser:
http://hostname/...
omitting the Domain that I previously set in the cookie.
Altering the URL to
http://hostname.domain/...
does the trick for me.
Ciao
Axel
Re: Embperl vs. Mason
hi, my ignorance on Embperl is about to show;-)) tell me what would one be looking at to write apps for say the casios and Pilot 5s in linux? will embedded perl work? is it the right choice? this to map to web technologies of course:-)) Regards, [EMAIL PROTECTED]
Re: Embperl vs. Mason
One big difference that I would point out is that despite its name HTML::Mason, is _much_ less HTML centric than Embperl. It is a bit mod_perl centric but there is literally nothing HTML specific about it at all. We've been talking recently about how to expand mason so that it can be used in any sort of context where you have a request (from STDIN, email, whatever) for content that you want filled by components. From what I can tell, this is unlikely to be possible (or desirable?) with Embperl. You are incorrect. HTML::Embperl is not HTML specific. It can be used just as easily to process regular text files for anything from email to configuration files. It does have HTML-specific features (such as dynamically generated tables) but you don't have to use these if you are working with plain old text files. --- Jason Bodnar + [EMAIL PROTECTED] + Tivoli Systems I strive for greatness but will settle for mediocrity. -- Jason Bodnar
Re: PerlChildInitHandler
Check to make sure that you compiled in the Init and Exit handlers
into mod_perl.
If you include the following code in a script, you should be able
to figure this out really quick:
require mod_perl;
require mod_perl_hooks;
my @retval = qw(table);
my @list = mod_perl::hooks();
for my $hook (sort @list) {
my $on_off =
mod_perl::hook($hook) ? "bEnabled/b" : "iDisabled/i";
push @retval, "trtd$hook/tdtd$on_off/td/tr\n";
}
push @retval, qw(/table);
print @retval;
Credit goes to Doug MacEachern on the code. Stick that chunket of
code in a script and it should let you know what you have available and
what you don't. ;) --SC
On Mon, 14 Feb 2000, Brendan W. McAdams wrote:
Date: Mon, 14 Feb 2000 12:02:45 -0500
From: Brendan W. McAdams [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: PerlChildInitHandler
I'm having trouble getting apache to even recognise the existance of
PerlChildInitHandler ( and childexithandler it seems as well) .
I've tried declaring my PerlChildInitHandler inside a VirtualHost, in the
main body of the config, and as a push_handler in my startup file [which is,
i know for a fact, being execed].
no matter what I try, apache is compeltely ignoring this directive.
I've put write to log when initialised traps in the modules that are being
handled on init and they never trip.
I've tried this with both Apache 1.39/modperl1.19 and Apache
1.311/modperl1.21 and no luck
Any assistance would be greatly appreciated.
Brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and why.
Then do it."
-Robert A. Heinlein
--
Sean Chittenden
[EMAIL PROTECTED]
(408)530-0001
Re: PerlChildInitHandler
Yup.
(I knew i did since i compiled with EVERYTHING=1).
All handlers lists as Enabled when this script is run.
So ... whats the next step in debugging here?
-brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and why.
Then do it."
-Robert A. Heinlein
- Original Message -
From: "Sean Chittenden" [EMAIL PROTECTED]
To: "Brendan W. McAdams" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, February 14, 2000 12:17 PM
Subject: Re: PerlChildInitHandler
Check to make sure that you compiled in the Init and Exit handlers
into mod_perl.
If you include the following code in a script, you should be able
to figure this out really quick:
require mod_perl;
require mod_perl_hooks;
my @retval = qw(table);
my @list = mod_perl::hooks();
for my $hook (sort @list) {
my $on_off =
mod_perl::hook($hook) ? "bEnabled/b" : "iDisabled/i";
push @retval, "trtd$hook/tdtd$on_off/td/tr\n";
}
push @retval, qw(/table);
print @retval;
Credit goes to Doug MacEachern on the code. Stick that chunket of
code in a script and it should let you know what you have available and
what you don't. ;) --SC
On Mon, 14 Feb 2000, Brendan W. McAdams wrote:
Date: Mon, 14 Feb 2000 12:02:45 -0500
From: Brendan W. McAdams [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: PerlChildInitHandler
I'm having trouble getting apache to even recognise the existance of
PerlChildInitHandler ( and childexithandler it seems as well) .
I've tried declaring my PerlChildInitHandler inside a VirtualHost, in the
main body of the config, and as a push_handler in my startup file [which
is,
i know for a fact, being execed].
no matter what I try, apache is compeltely ignoring this directive.
I've put write to log when initialised traps in the modules that are being
handled on init and they never trip.
I've tried this with both Apache 1.39/modperl1.19 and Apache
1.311/modperl1.21 and no luck
Any assistance would be greatly appreciated.
Brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and
why.
Then do it."
-Robert A. Heinlein
--
Sean Chittenden
[EMAIL PROTECTED]
(408)530-0001
Re: PerlChildInitHandler
It's a bit harsh, but I'd try something like this just for kicks
to make sure I can get access to the requested Handler.
# In httpd.conf
PerlModule DieOnInit
# In DieOnInit package
package DieOnInit;
sub handler {
warn "Child $$ is going to die in 20 seconds";
sleep(20); # Prevents children from constantly dying and filling up the
# error logs
die "Child dead: $$";
}
1;
#-- End package
I have a variation of this module lying around someplace that
provides me with a sanity check with regards to programming. If the child
dies, then the code is executed and I can plop in my ___ number of lines
of code that weren't being executed earlier. This kind of approach is
pretty top-down, but works when setting apache up... I've had a few
instances where the child _wasn't_ dying because of a config problem
farther up in the conf file.
At any rate, let me know if the handler isn't being executed... and
what you're trying to execute for that matter. Could you use a
PerlRequire directive and place your init stuff in there? --SC
On Mon, 14 Feb 2000, Brendan W. McAdams wrote:
Date: Mon, 14 Feb 2000 12:25:30 -0500
From: Brendan W. McAdams [EMAIL PROTECTED]
To: Sean Chittenden [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Re: PerlChildInitHandler
Yup.
(I knew i did since i compiled with EVERYTHING=1).
All handlers lists as Enabled when this script is run.
So ... whats the next step in debugging here?
-brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and why.
Then do it."
-Robert A. Heinlein
- Original Message -
From: "Sean Chittenden" [EMAIL PROTECTED]
To: "Brendan W. McAdams" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, February 14, 2000 12:17 PM
Subject: Re: PerlChildInitHandler
Check to make sure that you compiled in the Init and Exit handlers
into mod_perl.
If you include the following code in a script, you should be able
to figure this out really quick:
require mod_perl;
require mod_perl_hooks;
my @retval = qw(table);
my @list = mod_perl::hooks();
for my $hook (sort @list) {
my $on_off =
mod_perl::hook($hook) ? "bEnabled/b" : "iDisabled/i";
push @retval, "trtd$hook/tdtd$on_off/td/tr\n";
}
push @retval, qw(/table);
print @retval;
Credit goes to Doug MacEachern on the code. Stick that chunket of
code in a script and it should let you know what you have available and
what you don't. ;) --SC
On Mon, 14 Feb 2000, Brendan W. McAdams wrote:
Date: Mon, 14 Feb 2000 12:02:45 -0500
From: Brendan W. McAdams [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: PerlChildInitHandler
I'm having trouble getting apache to even recognise the existance of
PerlChildInitHandler ( and childexithandler it seems as well) .
I've tried declaring my PerlChildInitHandler inside a VirtualHost, in the
main body of the config, and as a push_handler in my startup file [which
is,
i know for a fact, being execed].
no matter what I try, apache is compeltely ignoring this directive.
I've put write to log when initialised traps in the modules that are being
handled on init and they never trip.
I've tried this with both Apache 1.39/modperl1.19 and Apache
1.311/modperl1.21 and no luck
Any assistance would be greatly appreciated.
Brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and
why.
Then do it."
-Robert A. Heinlein
--
Sean Chittenden
[EMAIL PROTECTED]
(408)530-0001
--
Sean Chittenden
[EMAIL PROTECTED]
(408)530-0001
Re: PerlChildInitHandler
"Sean" == Sean Chittenden [EMAIL PROTECTED] writes:
Sean Check to make sure that you compiled in the Init and Exit handlers
Sean into mod_perl.
Sean If you include the following code in a script, you should be able
Sean to figure this out really quick:
Sean require mod_perl;
Sean require mod_perl_hooks;
Sean my @retval = qw(table);
Sean my @list = mod_perl::hooks();
Sean for my $hook (sort @list) {
Sean my $on_off =
Sean mod_perl::hook($hook) ? "bEnabled/b" : "iDisabled/i";
Sean push @retval, "trtd$hook/tdtd$on_off/td/tr\n";
Sean }
Sean push @retval, qw(/table);
Sean print @retval;
Ewww... Too many pushes. :)
require mod_perl;
require mod_perl_hooks;
print "table",
(map {
"trtd", $_, "/tdtd",
(mod_perl::hook($_) ? "bEnabled/b" : "iDisabled/i"),
"/td/tr\n" } mod_perl::hooks()),
"/table";
map is your friend. Of course, this would have been even simpler with
CGI.pm HTML generators. :)
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
[EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/
Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
Re: PerlChildInitHandler
Lol! I ripped that right out of Apache::Status. Any ideas as to
whether or not its faster with map or push? I may, desire dependent,
benchmark the two formats and report the results.
It looks to me like the reason Doug did the code the way he did
was because he returns an array ref to the calling sub. --SC
PS CGI.pm does not reside on my system because of it's HTML
generation capabilities (and the consiquent memory bloat). ;)
On 14 Feb 2000, Randal L. Schwartz wrote:
Date: 14 Feb 2000 09:35:06 -0800
From: Randal L. Schwartz [EMAIL PROTECTED]
To: Sean Chittenden [EMAIL PROTECTED]
Cc: Brendan W. McAdams [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: Re: PerlChildInitHandler
"Sean" == Sean Chittenden [EMAIL PROTECTED] writes:
Sean Check to make sure that you compiled in the Init and Exit handlers
Sean into mod_perl.
Sean If you include the following code in a script, you should be able
Sean to figure this out really quick:
Sean require mod_perl;
Sean require mod_perl_hooks;
Sean my @retval = qw(table);
Sean my @list = mod_perl::hooks();
Sean for my $hook (sort @list) {
Sean my $on_off =
Sean mod_perl::hook($hook) ? "bEnabled/b" : "iDisabled/i";
Sean push @retval, "trtd$hook/tdtd$on_off/td/tr\n";
Sean }
Sean push @retval, qw(/table);
Sean print @retval;
Ewww... Too many pushes. :)
require mod_perl;
require mod_perl_hooks;
print "table",
(map {
"trtd", $_, "/tdtd",
(mod_perl::hook($_) ? "bEnabled/b" : "iDisabled/i"),
"/td/tr\n" } mod_perl::hooks()),
"/table";
map is your friend. Of course, this would have been even simpler with
CGI.pm HTML generators. :)
--
Sean Chittenden
[EMAIL PROTECTED]
(408)530-0001
Re: PerlChildInitHandler
Nope.
I'm not seeing it initialised.
nothing in my logs...
I _COULD_ do it in startup but it would defeat purpose.
I'm building persistant database connections with mySQL and Apache::DBI
from everything I've read and deduced, optimally EACH CHILD should be
opening a localised persistant database connection (and leaving any scripts
run under the child to have access to $dbh database handler)
To do this I need the $DBH to be opened, or at the least, initialised, when
the Child starts up.
Consequently, I really need to get the ChildInitHandlers working =)
-brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and why.
Then do it."
-Robert A. Heinlein
- Original Message -
From: "Sean Chittenden" [EMAIL PROTECTED]
To: "Brendan W. McAdams" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, February 14, 2000 12:33 PM
Subject: Re: PerlChildInitHandler
It's a bit harsh, but I'd try something like this just for kicks
to make sure I can get access to the requested Handler.
# In httpd.conf
PerlModule DieOnInit
# In DieOnInit package
package DieOnInit;
sub handler {
warn "Child $$ is going to die in 20 seconds";
sleep(20); # Prevents children from constantly dying and filling up the
# error logs
die "Child dead: $$";
}
1;
#-- End package
I have a variation of this module lying around someplace that
provides me with a sanity check with regards to programming. If the child
dies, then the code is executed and I can plop in my ___ number of lines
of code that weren't being executed earlier. This kind of approach is
pretty top-down, but works when setting apache up... I've had a few
instances where the child _wasn't_ dying because of a config problem
farther up in the conf file.
At any rate, let me know if the handler isn't being executed... and
what you're trying to execute for that matter. Could you use a
PerlRequire directive and place your init stuff in there? --SC
On Mon, 14 Feb 2000, Brendan W. McAdams wrote:
Date: Mon, 14 Feb 2000 12:25:30 -0500
From: Brendan W. McAdams [EMAIL PROTECTED]
To: Sean Chittenden [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Re: PerlChildInitHandler
Yup.
(I knew i did since i compiled with EVERYTHING=1).
All handlers lists as Enabled when this script is run.
So ... whats the next step in debugging here?
-brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive| pager: (305)277-4879
http://www.plexmedia.com | cell phone: (305)401-7313
"Always listen to the experts - they'll tell you what can't be done and
why.
Then do it."
-Robert A. Heinlein
- Original Message -
From: "Sean Chittenden" [EMAIL PROTECTED]
To: "Brendan W. McAdams" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, February 14, 2000 12:17 PM
Subject: Re: PerlChildInitHandler
Check to make sure that you compiled in the Init and Exit handlers
into mod_perl.
If you include the following code in a script, you should be able
to figure this out really quick:
require mod_perl;
require mod_perl_hooks;
my @retval = qw(table);
my @list = mod_perl::hooks();
for my $hook (sort @list) {
my $on_off =
mod_perl::hook($hook) ? "bEnabled/b" : "iDisabled/i";
push @retval, "trtd$hook/tdtd$on_off/td/tr\n";
}
push @retval, qw(/table);
print @retval;
Credit goes to Doug MacEachern on the code. Stick that chunket of
code in a script and it should let you know what you have available and
what you don't. ;) --SC
On Mon, 14 Feb 2000, Brendan W. McAdams wrote:
Date: Mon, 14 Feb 2000 12:02:45 -0500
From: Brendan W. McAdams [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: PerlChildInitHandler
I'm having trouble getting apache to even recognise the existance of
PerlChildInitHandler ( and childexithandler it seems as well) .
I've tried declaring my PerlChildInitHandler inside a VirtualHost, in
the
main body of the config, and as a push_handler in my startup file [which
is,
i know for a fact, being execed].
no matter what I try, apache is compeltely ignoring this directive.
I've put write to log when initialised traps in the modules that are
being
handled on init and they never trip.
I've tried this with both Apache 1.39/modperl1.19 and Apache
1.311/modperl1.21 and no luck
Any assistance would be greatly appreciated.
Brendan
-
Brendan W. McAdams| email: [EMAIL PROTECTED]
Programmer/Systems Administrator | office: (305)377-2880
Plexus InterActive
Re: PerlChildInitHandler
"Sean" == Sean Chittenden [EMAIL PROTECTED] writes: Sean Lol! I ripped that right out of Apache::Status. Any ideas as to Sean whether or not its faster with map or push? I may, desire dependent, Sean benchmark the two formats and report the results. Sean It looks to me like the reason Doug did the code the way he did Sean was because he returns an array ref to the calling sub. --SC It's probably more of a style thing. I like "map" because I had a lot of practice with Lispy-stuff in my history. Maybe doug prefers the the other. TIMTWOTDI. As for the array ref, this is easy: return ["table", (map ...), "/table"]; :-) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
Re: Apache::ASP HTTP's validation model
The immediate problem I see with this approach, is that $Response-LastModified() can only be called once per request. Consider a situation when a single asp file has multiple includes and each include is generated from a separate datasource. In this case, each include has to report back with its own last modification time. Dmitry At 11:41 PM 2/13/00, Joshua Chamas wrote: \How about some API extension, like $Response-LastModified($time) that would automatically check the incoming If-Modified-Since incoming header, and if set, and the LastModified time is less, than would automatically call a $Response-End() and send the NOT_MODIFIED status? There would also be a side affect of sending a Last-Modified header if an If-Modified-Since was not sent, or if Last-Modified is greater.
Re: Apache::ASP HTTP's validation model
But meets_condition is a file specific API and will not work for data coming from a database or a subrequest, etc. Dmitry At 01:08 AM 2/14/00, Matt Sergeant wrote: Isn't this handled by meets_condition? On Mon, 14 Feb 2000, Joshua Chamas wrote: What if it were just an Apache routine, like the one I proposed for Apache::ASP, $r-last_modified($time) ? Certainly someone could write up a module that defined Apache::last_module like Ken did with his Apache::Filter, it could be Apache::LastModified.
Re: Apache::ASP HTTP's validation model
Dmitry Beransky wrote: The immediate problem I see with this approach, is that $Response-LastModified() can only be called once per request. Consider a situation when a single asp file has multiple includes and each include is generated from a separate datasource. In this case, each include has to report back with its own last modification time. Dmitry In this case, it seems that $Response-LastModified would only be called once after the developer calculated from all the includes or other data sources what the real mtime was for script in question. What other API would be reasonable in this case ? -- Joshua _ Joshua Chamas Chamas Enterprises Inc. NodeWorks free web link monitoring Huntington Beach, CA USA http://www.nodeworks.com1-714-625-4051
Re: Apache::ASP HTTP's validation model
On Mon, 14 Feb 2000, Dmitry Beransky wrote: But meets_condition is a file specific API and will not work for data coming from a database or a subrequest, etc. I don't think there's anything file specific about meets_condition. Simply call $r-update_mtime() with the time given in your data or subrequest, etc. -- Matt/ Details: FastNet Software Ltd - XML, Perl, Databases. Tagline: High Performance Web Solutions Web Sites: http://come.to/fastnet http://sergeant.org Available for Consultancy, Contracts and Training.
Dynamic pages and ASP solutions - Apache::ASP vs. ChiliSoft ASP
Hello, I am try to get a website up running on debian linux, apache web server, and postgresql database. however, to create dynamic pages, i have been exploring embperl, mason, Apache::ASP, and chilisoft ASP but have been unable to determine which one solution would probably be most optimal. could any knowledgeable programmers out there give me some suggestions? thanks, tim
Re: Dynamic pages and ASP solutions - Apache::ASP vs. ChiliSoft ASP
Tim Lu wrote: Hello, I am try to get a website up running on debian linux, apache web server, and postgresql database. however, to create dynamic pages, i have been exploring embperl, mason, Apache::ASP, and chilisoft ASP but have been unable to determine which one solution would probably be most optimal. could any knowledgeable programmers out there give me some suggestions? Between Embperl, Mason, Apache::ASP, there are significant differences in the features and production styles, but you can't lose any way you go, and there are significant user populations using each. They are all fundamentally embedded perl web production environments. Between these + Chilisoft, you have the difference between using perl vs. VBScript open source vs. commercial and I don't think you will hear anything other than how wonderful perl is on this list ( its quite true ;) -- Joshua _ Joshua Chamas Chamas Enterprises Inc. NodeWorks free web link monitoring Huntington Beach, CA USA http://www.nodeworks.com1-714-625-4051
Re: Embedded Perl XML Extensions ...
According to Joshua Chamas: Will you be able to emulate the IIS/ASP 'transformNode' method that renders html from xml and xsl components? http://www.sci.kun.nl/sigma/Persoonlijk/egonw/xslt/ transformNode XSLT are not on my short list of TODOs for Apache::ASP, though certainly one could be easily made available when the other is too! It looks like the one above is usable if not complete. I don't think anything exactly follows the standard yet. The idea would be to get the calling syntax extablished and simple xsl documents working. However, transformNode is not an ASP method per se but a method of one of Microsoft's COM XML objects. So far I have stayed away from implementing Microsoft's COM objects like the BrowserCap, the AdRotator, and the like, and if I did provided an the XML object, I would be starting a general perl port of as many Microsoft COM objects as I could do. The difference here is that XSL transformations *should* follow vendor-independent standards and I'd like to see it available on as many platforms as possible. A developer here was already complaining about how the MS sdk for xml has MS-specific extensions in all the examples. What is on my short list is providing a developer interface for rendering XML to HTML. Now I have looked at XSLT, and it is pretty scary, even if supposedly necessary for some managing large document sets. Its purpose does seem a bit orthogonal to the ASP style of interleaving code content, with the first goal being simplicity and power, and then maintainability with decomp through includes and modules. It is more geared toward separating data from presentation, although in theory you can transform data to other data just as well. I think it will become extemely useful in cases where you have machine generated data that can be extracted in xml format and you want to present it a number of customized ways. XSLT seems to seriously complicate the XML rendering issue, and perhaps unnecessarily? Has it occurred to anyone that XSLT is just another programming language, and one that looks like an HTML doc? Yes, that is exactly the point, aside from being platform and vendor-independent. Someone who wants to do HTML presentation now has a language designed for that. Plus using IE5, you can push the work out to the browser an let it cache or update the components separately. I'll likely wait this out a bit to see how it shapes up, and would finally need an Apache::ASP user to require this functionality before pursuing it further. Leslie, are you that user ? Our situation may be a lost cause. The data in question (commodity trading stuff) lives on an NT box that has a nice native interactive interface but the web side has been done with a unix mod_perl wrapper to get the speed (maybe 30 price pages a second at peak times) and reliability we need. However we provide custom views of this for brokers and you can't just turn HTML coders loose on production mod_perl scripts even if you only need a slightly different look. So, we've added XML output to the NT server and started using XSL for some of the new variations, so far running under apache jserv. However since nearly everyone else here is an NT developer, the push is to put it all in one box, which is probably going to mean running IIS and MS-asp so we can sell something easier for other people to manage. However, since I haven't completely sold my soul to the dark side (and we aren't sure yet how well it will work...) I'd really like the xsl to be portable, and usable under mod_perl. I've had some problems with memory use running java servlets, although I like the load-balancing feature in the current apache jserv. Les Mikesell [EMAIL PROTECTED]
Re: Embedded Perl XML Extensions ...
i dont know if this is totally relevant but i have a small sample of a linux box w modperl apache setup and the modules for XML::Parser XML::DOMXML::XSL to parse the dtd xml and xsl file into a readable html doc and it works! embedperl could be used but thats just another layer right now ;) i have only spent the weekend on learning xml and this way of parsing and this seemed the easiest way of deploying http://drfrog.fdns.net/perl/xmlxsl.pl?filename=clay
RE: Embperl vs. Mason
On Mon, 14 Feb 2000, Gerald Richter wrote: all. We've been talking recently about how to expand mason so that it can be used in any sort of context where you have a request (from STDIN, email, whatever) for content that you want filled by components. While you are talking, Embperl can already do this for over 3 years :-) What we're talking about is coming up with a framework to provide this. You can pretty much DIY with Mason right now but it would be nice to formalize a lot of the mechanisms into separate classes and such. I think both Mason and Embperl (and Apache::ASP of course) are very powerfull and it's mainly a matter of style what you prefer. I certainly wasn't trying to bash Embperl or anything else (though I freely admit to preferring Mason). If it seemed that way, allow me to apologize. It totally agree, it's largely a matter of style and perhaps needing certain features more than others. -dave /*== www.urth.org We await the New Sun ==*/
re-tieing stdout to caputure subrequest output
Last November somebody sent me some code that demonstrated how to re-tie stdout in order to capture the output from subrequests. I misplaced that email so if the person who sent it to me could resend it I'd be forever greatful. Of course, if somebody who didn't send it to me knows how to do it and would like to send it to me as well, I'd also be forever greatful to that person. Thanks. --- Jason Bodnar + [EMAIL PROTECTED] + Tivoli Systems I swear I'd forget my own head if it wasn't up my ass. -- Jason Bodnar
RE: Embperl vs. Mason
At 15:17 14-2-2000 -0600, Autarch wrote: On Mon, 14 Feb 2000, Gerald Richter wrote: all. We've been talking recently about how to expand mason so that it can be used in any sort of context where you have a request (from STDIN, email, whatever) for content that you want filled by components. While you are talking, Embperl can already do this for over 3 years :-) What we're talking about is coming up with a framework to provide this. You can pretty much DIY with Mason right now but it would be nice to formalize a lot of the mechanisms into separate classes and such. I think both Mason and Embperl (and Apache::ASP of course) are very powerfull and it's mainly a matter of style what you prefer. I certainly wasn't trying to bash Embperl or anything else (though I freely admit to preferring Mason). If it seemed that way, allow me to apologize. It totally agree, it's largely a matter of style and perhaps needing certain features more than others. I don't know anything about XML etc. I know that I wanted something to offer me some sort of templates and embedded Perl - I got kind of desperate writing everything in CGI's. So I hunted down all these options, Like Embperl, ePerl, Apache::ASP, and of course HTML::Mason. I tried them all (one of the great things about Open Source software :), and I picked the one I liked best. Which, in the end, turned out to be Mason. (For example, Embperl's syntax for embedding Perl just doesn't agree with me ... perhaps because it looks too much like you're embedding TCL in StoryServer). If you really want to know what's best for you you'll have to try it all yourself. I guess it varies per person as well, depending on skills and needs. Some systems might offer more features, while others will give you more control. It's what you want and need that matters, not what others think you should use (although I'll wholehartedly recommend Mason to anyone asking :) ... it's exactly because of people's needs that we have more than one such system around. Grtz, Pascal -- Pascal Eeftinck - arcade^planet.nl UIN: 1923806 arcade^xs4all.nl - Perl is not a language, it's a way of life
re-tieing stdout to caputure subrequest output
From _subrequests_? I'm under the impression that this isn't possible, but if it is I definitely want to know about it. I'd use it for Apache::SSI and Apache::Filter. My understanding is that since subrequests don't necessarily use Perl's STDOUT layer, you can't capture the output with tie(). See Apache::Filter for examples of how to capture the STDOUT from subservient Perl routines' print() statements. [EMAIL PROTECTED] (Jason Bodnar) wrote: Last November somebody sent me some code that demonstrated how to re-tie stdout in order to capture the output from subrequests. I misplaced that email so if the person who sent it to me could resend it I'd be forever greatful. Of course, if somebody who didn't send it to me knows how to do it and would like to send it to me as well, I'd also be forever greatful to that person. Thanks. --- Jason Bodnar + [EMAIL PROTECTED] + Tivoli Systems I swear I'd forget my own head if it wasn't up my ass. -- Jason Bodnar ------ Ken Williams Last Bastion of Euclidity [EMAIL PROTECTED]The Math Forum
UN-Authenticating users?
I'm writing some stuff with CGI under mod perl. The users have to authenticate prior to even getting to the script... However, some of my users have more than one login with separate privlidges... (provided by the script). I want them to be able to log out and then log back in as someone else, but I can't quite figure out how to "UN-Authenticate". (DE-Authenticate?) I'm using CGI.pm under Apache::Registry, so I don't have a nice $r object to see if I could do something like $c-user = ""; which I'm guessing would barf anyway. I know they can just close their browsers, but I doubt "they" know this, and its not too elegant anyway. (To say nothing of the dreaded M$ "remember password dialog.) I would welcome any ideas on the topic. John
RE: Embperl vs. Mason
Well, I haven't used Embperl but I've read the docs a bit and I have some idea of how it works. One big difference that I would point out is that despite its name HTML::Mason, is _much_ less HTML centric than Embperl. It is a bit mod_perl centric but there is literally nothing HTML specific about it at all. We've been talking recently about how to expand mason so that it can be used in any sort of context where you have a request (from STDIN, email, whatever) for content that you want filled by components. While you are talking, Embperl can already do this for over 3 years :-) From what I can tell, this is unlikely to be possible (or desirable?) with Embperl. This means that learning Mason for your website could let you leverage this knowledge into creating a generic server, a command line filtering command set, or whatever. As Jason already pointed out Embperl has a lot of features for HTML, but you can use it for all sorts of textfiles. Embperl is highly configurable, if you don't need/like a specific feature for a given problem, you can just disable it. The idea of Embperl was to make life easy and to let Embperl handle as much things as possible for you, but in some sitaution this don't let you do the things like you want to do them, then you simply disable the feature. From my point of view Mason is much more web (site) centric then Embperl (this doesn't mean you can't use it outside a webserver) When Mason came up it's great plus was it componenet model. Embperl has learned a lot from Mason (and as Jonathan told me when we meet in summer on the Perl conference, also Mason learnt form Embperl :-) and now Embperl has also a component model which is as powerfull as the Mason one. The only piece that is really missing, is the output cacheing of sub components (but this is only a matter of time). I think both Mason and Embperl (and Apache::ASP of course) are very powerfull and it's mainly a matter of style what you prefer. Gerald - Gerald Richterecos electronic communication services gmbh Internetconnect * Webserver/-design/-datenbanken * Consulting Post: Tulpenstrasse 5 D-55276 Dienheim b. Mainz E-Mail: [EMAIL PROTECTED] Voice:+49 6133 925151 WWW:http://www.ecos.de Fax: +49 6133 925152 -
Embperl configuration problem
Hi guys, I'm new to using Embperl and ran into a configuration problem which I don't know how to fix. I really appreciate it if you could point me to the right direction :) Here's the setup: I've Apache 1.39 statically compiled with modperl 1.21 and Embperl 1.2.1. I have some pure perl files (.pl) in directory /cgi-bin and embperl files (.ehtml) in /, so the configuration looks something like this: ... ... Alias /cgi-bin/ "/abc/cgi-bin/" Location /cgi-bin SetHandler perl-script PerlHandler Apache::Registry Options ExecCGI PerlSendHeader On /Location Location / SetHandler perl-script PerlHandler HTML::Embperl PerlSetEnv EMBPERL_FILESMATCH "\.ehtml" Options ExecCGI /Location ... ... Here's the problem: this setup works fine for my embperl pages, but the perl files (*.pl) in /cgi-bin fail to run and return as text files to the web browser. If I comment out the embperl section (comment out the whole Location /) then the perl files in /cgi-bin work fine. What am I doing wrong? Comments are greatly appreciated. Thanks in advance. Best Regards, Jasper [EMAIL PROTECTED]
Apache, mod_perl and DBI
hello people me again with the Apache::DBI and apache problems the scenario - a very basic install of redhat 6.1 downloaded mod_perl 1.21 apache-1.3.11 from cpan Apache::DBI v0.87 DBI v1.13 DBD::mysql v2.0218 using the default httpd.conf with mod_perl added as a module I add the line at the end of the config PerlModule Apache::DBI the server refuses to start, no logs, no nothing. running strace on apache shows that it crashes when it spawns the client and loads the DBI modules any ideas? -- Adam Cassar Senior Web Developer ___ NetRegistry http://www.netregistry.com.au Tel: +61 2 9699 6099 | Fax: +61 2 9699 6088 PO Box 270 Broadway NSW 2007 Australia
Re: Embperl configuration problem
Your root Location directives are overriding your cgi-bin Location. You set your embperl to skip all files but the ehtml, but that means it does nothing with the .pl files. Try this instead for the root Location. Location / FilesMatch "\.ehtml$" SetHandler perl-script PerlHandler HTML::Embperl Options ExecCGI /Filesmatch /Location cliff rayman genwax.com Jasper Wong wrote: ... Alias /cgi-bin/ "/abc/cgi-bin/" Location /cgi-bin SetHandler perl-script PerlHandler Apache::Registry Options ExecCGI PerlSendHeader On /Location Location / SetHandler perl-script PerlHandler HTML::Embperl PerlSetEnv EMBPERL_FILESMATCH "\.ehtml" Options ExecCGI /Location ... ... Here's the problem: this setup works fine for my embperl pages, but the perl files (*.pl) in /cgi-bin fail to run and return as text files to the web browser. If I comment out the embperl section (comment out the whole Location /) then the perl files in /cgi-bin work fine. What am I doing wrong? Comments are greatly appreciated. Thanks in advance. Best Regards, Jasper [EMAIL PROTECTED]
Access modPerl Api from CGI??
Hi guys, I find it easier to do quick dirty things with CGI without having to restart the server. So I am wondering if it is possible to create/simulate an Apache request object so that I can go on developping my application with pure CGI, and still call the various Apache modules which requires this object. For instance I'd prefer use directy $r-header_out() methods than print header (blah blah blah) I will of course switch completely to mod Perl when my application is sufficiently hashed out.. Please help me as I am missing some insight on mod perl internals. Thanks, -- Serge Barbosa Da Torre - [EMAIL PROTECTED] "It's not easy, being green." -- Kermit the Frog
RE: Embperl configuration problem
... Alias /cgi-bin/ "/abc/cgi-bin/" Location /cgi-bin SetHandler perl-script PerlHandler Apache::Registry Options ExecCGI PerlSendHeader On /Location Location / SetHandler perl-script PerlHandler HTML::Embperl PerlSetEnv EMBPERL_FILESMATCH "\.ehtml" Options ExecCGI /Location ... ... Move the /cgi-bin part after the / part, so it overwrites it and not vice vera Gerald
Re: Access modPerl Api from CGI??
I find it easier to do quick dirty things with CGI without having to restart the server. So I am wondering if it is possible to create/simulate an Apache request object so that I can go on developping my application with pure CGI, and still call the various Apache modules which requires this object. For instance I'd prefer use directy $r-header_out() methods than print header (blah blah blah) I will of course switch completely to mod Perl when my application is sufficiently hashed out.. Please help me as I am missing some insight on mod perl internals. Thanks, RTFM'ing will save you much more time than when you try to reinvent the wheel. You want to look at Apache::PerlRun for dirty CGI scripts: http://perl.apache.org/guide/porting.html#Apache_PerlRun_a_closer_look You want to look at development process techniques to solve the server restart problem: http://perl.apache.org/guide/porting.html#Reloading_Modules_and_Required_F Hope this helps... ___ Stas Bekmanmailto:[EMAIL PROTECTED] http://www.stason.org/stas Perl,CGI,Apache,Linux,Web,Java,PC http://www.stason.org/stas/TULARC perl.apache.orgmodperl.sourcegarden.org perlmonth.comperl.org single o- + single o-+ = singlesheavenhttp://www.singlesheaven.com
Re: Embperl vs. Mason
Nothing really to add here, except that since this seems to be a FAQ, perhaps Stas would be willing to add a section about it that we could just point to whenever this question comes up? A non-partisan page with a focus on similarities and links to each site would be ideal. At 12:39 AM 2/14/00 -0800, Joshua Chamas wrote: Hi Andre, I am unbiased in that I do not use either, but know about stuff like this since I wrote my own equivalent to these web application environments, which will go unnamed ;) Embperl seems to be more script centric, and Mason seems more site centric, so mental approaches might differ between top down vs. bottom up. I am not meaning to disparage either environment in creating these very rough generalizations, but I believe that their respective talents lie in these directions, such that you might find yourself better enabled creating particular scripts with Embperl, but in creating a master site of sites, Mason might make things better. I can tell you that Embperl is much easier to get going, and has a very powerful set of objects to work with as well as a rich syntax. But the Mason site architecture is very advanced, and promises other features like a great debugger and application publisher. Also, Embperl is a bit faster on startup execution, but this should not matter on a large complex site. Both environments provide expert modularization caching methodologies with Mason's component architecture and Embperl's new object and Execute() routine. -- Joshua _ Joshua Chamas Chamas Enterprises Inc. NodeWorks free web link monitoring Huntington Beach, CA USA http://www.nodeworks.com1-714-625-4051
Re: Embperl vs. Mason
Nothing really to add here, except that since this seems to be a FAQ, perhaps Stas would be willing to add a section about it that we could just point to whenever this question comes up? A non-partisan page with a focus on similarities and links to each site would be ideal. Hmm, I hardly cope with the scope of information the guide tries to cover already. I want to insert some more information that I've in my backlogs and on TODO list and then to start working on reconstruction of the guide toward easier navigation thru the available information. That's said, I definitely don't want to enlarge the scope even more at this time. Therefore I think the best solution is to start a separate document that does various comparisons Embperl vs. Mason, VB/ChilySoft vs. Apache::ASP etc. Having a section on each comparison sounds like a great idea. When the reconstruction of the guide will be started, one of the bricks will be the comparisons chapter. Meanwhile please prepare the document or part of it and post it to the list for review and further upload to the perl.apache.org. Text or POD formats should be used. I understand that the review that Joshua has posted seems to be the correct one. Am I right? Thank you. ___ Stas Bekmanmailto:[EMAIL PROTECTED] http://www.stason.org/stas Perl,CGI,Apache,Linux,Web,Java,PC http://www.stason.org/stas/TULARC perl.apache.orgmodperl.sourcegarden.org perlmonth.comperl.org single o- + single o-+ = singlesheavenhttp://www.singlesheaven.com
