Apache::DBILogger - Tracks what's being transferred in a DBI database
# Place this in your Apache's httpd.conf file
PerlSetVar DBILogger_data_source DBI:mysql:httpdlog
PerlSetVar DBILogger_username httpduser
PerlSetVar DBILogger_password secret
PerlSetvar DBILogger_table requests
Create a database with a table named requests like this:
CREATE TABLE requests ( server varchar(127) DEFAULT '' NOT NULL, bytes mediumint(9) DEFAULT '0' NOT NULL, user varchar(15) DEFAULT '' NOT NULL, filename varchar(200) DEFAULT '' NOT NULL, remotehost varchar(150) DEFAULT '' NOT NULL, remoteip varchar(15) DEFAULT '' NOT NULL, status smallint(6) DEFAULT '0' NOT NULL, timeserved datetime DEFAULT '0000-00-00 00:00:00' NOT NULL, contenttype varchar(50) DEFAULT '' NOT NULL, urlpath varchar(200) DEFAULT '' NOT NULL, referer varchar(250) DEFAULT '' NOT NULL, useragent varchar(250) DEFAULT '' NOT NULL, usertrack varchar(100) DEFAULT '' NOT NULL, KEY server_idx (server), KEY timeserved_idx (timeserved) );
Its recommended that you include
use Apache::DBI; use DBI; use Apache::DBILogger;
in your startup.pl script. Please read the Apache::DBI documentation for further information.
This module tracks what's being transfered by the Apache web server in a SQL database (everything with a DBI/DBD driver). This allows to get statistics (of almost everything) without having to parse the log files (like the Apache::Traffic module, just in a "real" database, and with a lot more logged information).
Apache::DBILogger will track the cookie from 'mod_usertrack' if it's there.
After installation, follow the instructions in the synopsis and restart the server.
The statistics are then available in the database. See the section VIEWING STATISTICS for more details.
You need to have compiled mod_perl with the LogHandler hook in order to use this module. Additionally, the following modules are required:
To install this module, move into the directory where this file is located and type the following:
This will install the module into the Perl library directory.
Once installed, you will need to modify your web server's configuration file so it knows to use Apache::DBILogger during the logging phase.
Please see the bin/ directory in the distribution for a statistics script.
Some funny examples on what you can do might include:
select count(id),sum(bytes) from requests
select server,count(id) as hits,sum(bytes) from requests
group by server order by hits desc
select count(id) from requests where useragent like "%Mac%"
This is pretty unoptimal. It would be faster to calculate the dates in perl and write them in the sql query using f.x. Date::Format.
select count(id),sum(bytes) from requests where
server="www.company.com" and dayofweek(timeserved) = 2
It's often pretty interesting to view the referer info too.
See your sql server documentation of more examples. I'm a happy mySQL user, so I would continue on
MySQL 'read locks' the table when you do a select. On a big table (like a large httpdlog) this might take a while, where your httpds can't insert new logentries, which will make them 'hang' until the select is done.
One way to work around this is to create another table (f.x. requests_insert) and get the httpd's to insert to this table.
Then run a script from crontab once in a while which does something like this:
LOCK TABLES requests WRITE, requests_insert WRITE
insert into requests select * from requests_insert
delete from requests_insert
You can use the moverows.pl script from the bin/ directory.
Please note that this won't work if you have any unique id field! You'll get duplicates and your new rows won't be inserted, just deleted. Be careful.
I've experienced problems with 'Packets too large' when using Apache::DBI, mysql and DBD::mysql 2.00 (from the Msql-mysql 1.18x packages). The DBD::mysql module from Msql-mysql 1.19_17 seems to work fine with Apache::DBI.
You might get problems with Apache 1.2.x. (Not supporting post_connection?)
This module is supported via the mod_perl mailinglist (firstname.lastname@example.org, subscribe by sending a mail to email@example.com).
I would like to know which databases this module have been tested on, so please mail me if you try it.
The latest version can be found on your local CPAN mirror or at ftp://ftp.netcetera.dk/pub/perl/
Copyright (C) 1998, Ask Bjoern Hansen <firstname.lastname@example.org>. All rights reserved. This module is free software; you may redistribute it and/or modify it under the same terms as Perl itself.
To install Apache::DBILogger, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell
For more information on module installation, please visit the detailed CPAN module installation guide.