Ron Savage

NAME

Log::Handler::Plugin::DBI::CreateTable - A helper for Log::Hander::Output::DBI to create your 'log' table

Synopsis

See scripts/create.table.pl and scripts/drop.table.pl.

The programs use these methods: "create_log_table()" and "drop_log_table()".

Description

This module is a customised wrapper for DBIx::Admin::CreateTable, which means it handles a range of database server SQL formats for creating tables and the corresponding sequences.

Likewise for dropping tables and sequences.

The table name defaults to 'log', and it has the correct structure to be compatible with Log::Handler::Output::DBI.

Distributions

This module is available as a Unix-style distro (*.tgz).

See http://savage.net.au/Perl-modules/html/installing-a-module.html for help on unpacking and installing distros.

Installation

Install Log::Handler::Plugin::DBI as you would for any Perl module:

Run:

        cpanm Log::Handler::Plugin::DBI

or run:

        sudo cpan Log::Handler::Plugin::DBI

or unpack the distro, and then either:

        perl Build.PL
        ./Build
        ./Build test
        sudo ./Build install

or:

        perl Makefile.PL
        make (or dmake or nmake)
        make test
        make install

Constructor and Initialization

new() is called as my($app) = Log::Handler::Plugin::DBI::CreateTable -> new(k1 => v1, k2 => v2, ...).

It returns a new object of type Log::Handler::Plugin::DBI::CreateTable.

Key-value pairs accepted in the parameter list (see corresponding methods for details [e.g. "config([$hashref])"]):

o config => $hashref

The keys and values of this hashref are documented below under "config([$hashref])".

Methods

config([$hashref])

Gets or sets the hashref of options used by the other methods.

Here, the [] indicate an optional parameter.

The hashref takes these (key => value) pairs:

o dsn => $string

A typical $string might be 'dbi:SQLite:dbname=/tmp/logger.test.sqlite'.

o username => $string

Supply your database server username, or leave empty for databases such as SQLite.

o password => $string

Supply your database server password, or leave empty for databases such as SQLite.

o table_name => $string

Supply your log table name, or let it default to 'log'.

'config' is a parameter to "new()". See "Constructor and Initialization" for details.

create_log_table()

Creates the table named in the config hashref passed in to new.

drop_log_table()

Drops the table named in the config hashref passed in to new.

FAQ

When would I use this module?

You use scripts/*.pl in preparation for using any class or program which you want to log to a database.

Having create the 'log' table, then you write code using Log::Handler::Plugin::DBI.

For sample code, study CGI::Snapp::Demo::Four.

What is the expected structure of the 'log' table?

In pseudo-code:

        id primary key + (db_vendor-dependent stuff)
        level varchar(255) not null,
        message not null + (db_vendor eq 'ORACLE' ? 'long' : 'text')
        timestamp timestamp not null default current_timestamp +
        (db_vendor =~ /(?:MySQL|Postgres)/i ? '(0) without time zone' : '')

Also, if you're using MySQL, you might want to set the engine=innodb option.

See scripts/create.table.pl and scripts/drop.table.pl for an easy way to do all this.

Can this module be used in any module?

Sure, but it's not a plugin like Log::Handler::Plugin::DBI is.

See Also

CGI::Application

The following are all part of this set of distros:

CGI::Snapp - A almost back-compat fork of CGI::Application

See Also

CGI::Application

The following are all part of this set of distros:

CGI::Snapp - A almost back-compat fork of CGI::Application

CGI::Snapp::Demo::One - A template-free demo of CGI::Snapp using just 1 run mode

CGI::Snapp::Demo::Two - A template-free demo of CGI::Snapp using N run modes

CGI::Snapp::Demo::Three - A template-free demo of CGI::Snapp using the forward() method

CGI::Snapp::Demo::Four - A template-free demo of CGI::Snapp using Log::Handler::Plugin::DBI

CGI::Snapp::Demo::Four::Wrapper - A wrapper around CGI::Snapp::Demo::Four, to simplify using Log::Handler::Plugin::DBI

Config::Plugin::Tiny - A plugin which uses Config::Tiny

Config::Plugin::TinyManifold - A plugin which uses Config::Tiny with 1 of N sections

Data::Session - Persistent session data management

Log::Handler::Plugin::DBI - A plugin for Log::Handler using Log::Hander::Output::DBI

Log::Handler::Plugin::DBI::CreateTable - A helper for Log::Hander::Output::DBI to create your 'log' table

Machine-Readable Change Log

The file CHANGES was converted into Changelog.ini by Module::Metadata::Changes.

Version Numbers

Version numbers < 1.00 represent development versions. From 1.00 up, they are production versions.

Credits

Please read https://metacpan.org/module/CGI::Application::Plugin::Config::Simple#AUTHOR, since a lot of the ideas for this module were copied from CGI::Application::Plugin::Config::Simple.

Support

Email the author, or log a bug on RT:

https://rt.cpan.org/Public/Dist/Display.html?Name=Log::Handler::Plugin::DBI.

Author

Log::Handler::Plugin::DBI::CreateTable was written by Ron Savage <ron@savage.net.au> in 2012.

Home page: http://savage.net.au/index.html.

Copyright

Australian copyright (c) 2012, Ron Savage.

        All Programs of mine are 'OSI Certified Open Source Software';
        you can redistribute them and/or modify them under the terms of
        The Artistic License, a copy of which is available at:
        http://www.opensource.org/licenses/index.html



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