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Hi
Our organization has a lot of IT systems ( OLTP, MIS, Exadata, EMV, noncore ... ) - running diferrent platforms ( AIX, Linux, Sun, Win Server, ...), each system has its own monitoring tool designed by its manufacturer. We also write some shell scripts to do it manually. But we... (3 Replies)
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CGI::Application::Plugin::DBIProfile::Graph::HTML(3pm) User Contributed Perl Documentation CGI::Application::Plugin::DBIProfile::Graph::HTML(3pm)
NAME
CGI::Application::Plugin::DBIProfile::Graph::HTML - VERY basic pure html vertical bar graphing for CAP:DBIProfile.
SYNOPSIS
# in httpd.conf
SetVar CAP_DBIPROFILE_GRAPHMODULE CGI::Application::Plugin::DBIProfile::Graph::HTML
PerlSetVar CAP_DBIPROFILE_GRAPHMODULE CGI::Application::Plugin::DBIProfile::Graph::HTML
DESCRIPTION
This module is provided as a basic implementation of graphing for CAP:DBIProfile. It can be used as an example to develop other, more
sophisticated, graphing solutions.
GRAPH PLUGIN DEVELOPMENT
The graphing plugin must have a method called "build_graph", which must accept options as a hash.
It should return a scalar or scalar ref holding the HTML output needed to generate your graph.
The following options will be passed to the "build_graph" method:
self
The cgiapp object.
mode_param
$self->mode_param - the runmode variable used to determine runmode (useful for creating links back to ourselves).
title
A textual title for your graph. You don't have to use this, but is there if you want it.
ylabel
Label for values we're graphing. Either "Count" or "Seconds".
data
An array of the datapoints to graph.
tags
Labels for each datapoint which match the labels that will be used on the sql statement list (1 to however many items there are).
The easiest graphs to implement are fully inline - ie. it doesn't need to make any external calls (no <image> or <embed> tags and such).
CGI::Application::Plugin::DBIProfile::Graph::HTML is an example of this. Other possible candidates are Plotr and Open Flash Chart (using js
interface to populate data).
Another inline solution is to use the <img src="data:uri"> scheme. An example of this can be found in
CGI::Application::Plugin::DBIProfile::Graph::GDGraphInline. Please note, this isn't supported under MSIE.
In order to generate a graph that isn't inline, you'll need to pass the data to be graphed with your call to the external object. For
example, if you want to use GDGraph, you could create a separate cgi script that returns graphs based on params passed to it, and return an
approapriate image tag to from your graphing module. For example:
<img src="/cgi-bin/graph.pl?data=20,14,42&tags=1,2,3">
Another way, would be to add a runmode in a CGI::Application "init" hook, and pass that runmode in a link back to the same script, and
include your graph module in our script with a use statement. An example of this can be found in
CGI::Application::Plugin::DBIProfile::Graph::SVGTT.
REQUIREMENTS
L<HTML::Template>
SEE ALSO
L<CGI::Application::Plugin::DBIProfile>
L<CGI::Application::Plugin::DBIProfile::Graph::GDGraphInline>
L<CGI::Application::Plugin::DBIProfile::Graph::SVGTT>
AUTHOR
Joshua I Miller, L<unrtst@cpan.org>
COPYRIGHT &; LICENSE
Copyright 2007 Joshua Miller, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.12.4 2011-11-10 CGI::Application::Plugin::DBIProfile::Graph::HTML(3pm)
