Segmentation Fault: Core dumped..;-)

My first Groovy CGI implementation

Posted : May 5, 2004 at 1:39 pm [America/Los_Angeles]

While writing the actual code was a whole lot of fun, configuring Apache to actually respond to Groovy as CGI programs involved a few hacks (details below). I also wrote a Perl and Python version (along with the Groovy implementation) just to enable folks to get a very high-level comparitive overview. Needless to say, this exercise is purely to get a feel of how “scripty” Groovy is. I have no desire to build Groovy/CGI applications (as the speed difference in the demo links above will show)

So here we go:

Groovy Implementation:

#!/usr/bin/env groovy

stuff = "Hello, Groovy"

# Spitting out standard HTTP Header
println "Content-type: text/htmlnn"

# Using here-docs to generated HTML content
html = <<<OUTPUT
<html>
<head>
<title>Hello, Groovy</title>
</head>
<body background="/images/blue-dash.gif">
<h3>${stuff}</h3>
</body>
</html>
OUTPUT

# Spitting out standard Hello, Groovy
println html

Python Implementation:

#!/usr/bin/env python

stuff = "Hello, Python"

# Spitting out standard HTTP Header
print "Content-type: text/htmlnn"

# Using here-docs to generated HTML content
# Thanks to James for clarifying how to use
# here-docs in Python..:-)
html = """
<html>
<head>
<title>Hello, Python</title>
</head>
<body background="/images/blue-dash.gif">
<h3>%s</h3>
</body>
</html>""" % stuff

# Spitting out standard Hello, Python
print html

Perl Implementation:

#!/usr/bin/env perl

$stuff = "Hello, Perl";

# Spitting out standard HTTP Header
print "Content-type: text/htmlnn" ;

# Using here-docs to generated HTML content
$html = <<OUTPUT;
<html>
<head>
<title>Hello, Perl</title>
</head>
<body background="/images/blue-dash.gif">
<h3>$stuff</h3>
</body>
</html>
OUTPUT

# Spitting out standard Hello, Perl
print $html;

In order to make Groovy CGI Applications work, I had to make two changes:
1. Update the envvars file (in APACHE_HOME/bin) as follows:

# Set JAVA_HOME
JAVA_HOME=”/usr/local/j2sdk1.4.2″
export JAVA_HOME
# Set GROOVY HOME
GROOVY_HOME=”/usr/local/groovy-1.0-beta-4″
export GROOVY_HOME
# PATH
PATH=$PATH:${GROOVY_HOME}/bin:${JAVA_HOME}/bin
export PATH

2. Update the httpd.conf as follows:

PassEnv GROOVY_HOME
PassEnv JAVA_HOME
PassEnv PATH

Enjoy.

Update:

Decided to remove the links to my CGI as it was ‘killing’ my machine

- Anand

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My first Groovy CGI implementation

Posted : May 5, 2004 at 1:39 pm [America/Los_Angeles]

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