pjs/tools/page-loader/README.txt

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#
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is Mozilla page-loader test, released Aug 5, 2001.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 2001
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# John Morrison <jrgm@netscape.com>, original author
# Heikki Toivonen <heikki@netscape.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the provisions above, a recipient may use your version of this file under
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# ***** END LICENSE BLOCK *****
Rough notes on setting up this test app. jrgm@netscape.com 2001/08/05
1) this is intended to be run as a mod_perl application under an Apache web
server. [It is possible to run it as a cgi-bin, but then you will be paying
the cost of forking perl and re-compiling all the required modules on each
page load].
2) it should be possible to run this under Apache on win32, but I expect that
there are *nix-oriented assumptions that have crept in. (You would also need
a replacement for Time::HiRes, probably by using Win32::API to directly
call into the system to Windows 'GetLocalTime()'.)
3) You need to have a few "non-standard" Perl Modules installed. This script
will tell you which ones are not installed (let me know if I have left some
out of this test).
--8<--------------------------------------------------------------------
#!/usr/bin/perl
my @modules = qw{
LWP::UserAgent SQL::Statement Text::CSV_XS DBD::CSV
DBI Time::HiRes CGI::Request URI
MIME::Base64 HTML::Parser HTML::Tagset Digest::MD5
};
for (@modules) {
printf "%20s", $_;
eval "use $_;";
if ($@) {
print ", I don't have that.\n";
} else {
print ", version: ", eval "\$" . "$_" . "::VERSION", "\n";
}
}
--8<--------------------------------------------------------------------
For modules that are missing, you can find them at http://www.cpan.org/.
Download the .tar.gz files you need, and then (for the most part) just
do 'perl Makefile.PL; make; make test; make install'.
[Update: 28-Mar-2003] I recently installed Redhat 7.2, as server, which
installed Apache 1.3.20 with mod_perl 1.24 and perl 5.6.0. I then ran the
CPAN shell (`perl -MCPAN -e shell') and after completing configuration, I
did 'install Bundle::CPAN', 'install Bundle::LWP' and 'install DBI' to
upgrade tose modules and their dependencies. These instructions work on OSX
as well, make sure you run the CPAN shell with sudo so you have sufficient
privs to install the files.
CGI::Request seems to have disappeared from CPAN, but you can get a copy
from <http://stein.cshl.org/WWW/software/CGI::modules/> and then install
with the standard `perl Makefile.PL; make; make test; make install'.
To install the SQL::Statement, Text::CSV_XS, and DBD::CSV modules, there is
a bundle available on CPAN, so you can use the CPAN shell and just enter
'install Bundle::DBD::CSV'.
At the end of this, the output for the test program above was the
following. (Note: you don't necessarily have to have the exact version
numbers for these modules, as far as I know, but something close would be
safest).
LWP::UserAgent, version: 2.003
SQL::Statement, version: 1.005
Text::CSV_XS, version: 0.23
DBD::CSV, version: 0.2002
DBI, version: 1.35
Time::HiRes, version: 1.43
CGI::Request, version: 2.75
URI, version: 1.23
MIME::Base64, version: 2.18
HTML::Parser, version: 3.27
HTML::Tagset, version: 3.03
Digest::MD5, version: 2.24
4) There is code to draw a sorted graph of the final results, but I have
disabled the place in 'report.pl' where its use would be triggered (look
for the comment). This is so that you can run this without having gone
through the additional setup of the 'gd' library, and the modules GD and
GD::Graph. If you have those in place, you can turn this on by just
reenabling the print statement in report.pl
[Note - 28-Mar-2003: with Redhat 7.2, libgd.so.1.8.4 is preinstalled to
/usr/lib. The current GD.pm modules require libgd 2.0.5 or higher, but you
use 1.8.4 if you install GD.pm version 1.40, which is available at
<http://stein.cshl.org/WWW/software/GD/old/GD-1.40.tar.gz>. Just do 'perl
Makefile.PL; make; make install' as usual. I chose to build with JPEG
support, but without FreeType, XPM and GIF support. I had a test error when
running 'make test', but it works fine for my purposes. I then installed
'GD::Text' and 'GD::Graph' from the CPAN shell.]
5) To set this up with Apache, create a directory in the cgi-bin for the web
server called e.g. 'page-loader'.
5a) For Apache 1.x/mod_perl 1.x, place this in the Apache httpd.conf file,
and skip to step 5c.
--8<--------------------------------------------------------------------
Alias /page-loader/ /var/www/cgi-bin/page-loader/
<Location /page-loader>
SetHandler perl-script
PerlHandler Apache::Registry
PerlSendHeader On
Options +ExecCGI
</Location>
--8<--------------------------------------------------------------------
[MacOSX note: The CGI folder lives in /Library/WebServer/CGI-Executables/
so the Alias line above should instead read:
Alias /page-loader/ /Library/WebServer/CGI-Executables/page-loader
Case is important (even though the file system is case-insensitive) and
if you type it incorrectly you will get "Forbidden" HTTP errors.
In addition, perl (and mod_perl) aren't enabled by default. You need to
uncomment two lines in httpd.conf:
LoadModule perl_module libexec/httpd/libperl.so
AddModule mod_perl.c
(basically just search for "perl" and uncomment the lines you find).]
5b) If you're using Apache 2.x and mod_perl 1.99/2.x (tested with Red Hat 9),
place this in your perl.conf or httpd.conf:
--8<--------------------------------------------------------------------
Alias /page-loader/ /var/www/cgi-bin/page-loader/
<Location /page-loader>
SetHandler perl-script
PerlResponseHandler ModPerl::RegistryPrefork
PerlOptions +ParseHeaders
Options +ExecCGI
</Location>
--8<--------------------------------------------------------------------
If your mod_perl version is less than 1.99_09, then copy RegistryPrefork.pm
to your vendor_perl ModPerl directory (for example, on Red Hat 9, this is
/usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi/ModPerl).
If you are using mod_perl 1.99_09 or above, grab RegistryPrefork.pm from
http://perl.apache.org/docs/2.0/user/porting/compat.html#C_Apache__Registry___C_Apache__PerlRun__and_Friends
and copy it to the vendor_perl directory as described above.
5c) When you're finished, restart Apache. Now you can run this as
'http://yourserver.domain.com/page-loader/loader.pl'
6) You need to create a subdirectory call 'db' under the 'page-loader'
directory. This subdirectory 'db' must be writeable by UID that Apache
executes as (e.g., 'nobody' or 'apache'). [You may want to figure out some
other way to do this if this web server is not behind a firewall].
7) You need to assemble a set of content pages, with all images, included JS
and CSS pulled to the same directory. These pages can live anywhere on the
same HTTP server that is running this app. The app assumes that each page
is in its own sub-directory, with included content below that
directory. You can set the location and the list of pages in the file
'urllist.txt'. [See 'urllist.txt' for further details on what needs to be
set there.]
There are various tools that will pull in complete copies of web pages
(e.g. 'wget' or something handrolled from LWP::UserAgent). You should edit
the pages to remove any redirects, popup windows, and possibly any platform
specific JS rules (e.g., Mac specific CSS included with
'document.write("LINK...'). You should also check that for missing content,
or URLs that did not get changed to point to the local content. [One way to
check for this is tweak this simple proxy server to check your links:
http://www.stonehenge.com/merlyn/WebTechniques/col34.listing.txt)
[MacOSX note: The web files live in /Library/WebServer/Documents, so you will
need to modify urllist.txt to have the appropriate FILEBASE and HTTPBASE.]
8) The "hook" into the content is a single line in each top-level document like this:
<!-- MOZ_INSERT_CONTENT_HOOK -->
which should be placed immediately after the opening <HEAD> element. The script uses
this as the way to substitute a BASE HREF and some JS into the page which will control
the exectution of the test.
9) You will most likely need to remove all load event handlers from your
test documents (onload attribute on body and handlers added with
addEventListener).
10) Because the system uses (X)HTML base, and some XML constructs are not
subject to that (for example xml-stylesheet processing instructions),
you may need to provide the absolute path to external resources.
11) If your documents are tranformed on the client side with XSLT, you will
need to add this snippet of XSLT to your stylesheet (and possibly make
sure it does not conflict with your other rules):
--8<--------------------------------------------------------------------
<!-- Page Loader -->
<xsl:template match="html:script">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
<xsl:for-each select="@*">
<xsl:copy/>
</xsl:for-each>
</xsl:template>
--8<--------------------------------------------------------------------
And near the top of your output rules add:
<xsl:apply-templates select="html:script"/>
Finally make sure you define the XHTML namespace in the stylesheet
with "html" prefix.
12) I've probably left some stuff out. Bug jrgm@netscape.com for the missing stuff.