go-fracserv

README

go.fracserv

Homework assignment for the greatest group ever. This task is to create a web server that will generate fractals on the fly.

Requirements

###Package main Should run a webserver
Should take a commandline flag to set the port to listen on
Should print the URL of homepage, i.e. http://computer.example.com:9999/

###Package fractal Should define an interface that is a composition of image.RGBA or image.Paletted something like

type Fractal struct {
	image.Paletted
}

Subpackage fractal/solid which renders a fractal image of the specified size, using only a specific color (this should make a good place holder for the other tasks if you don't want to go crazy learning about fractals)
Create at least one other subpackage that implements a famous fractal
Write at least one unit test to verify your func At(x, y, int) color.Color
Subpackages should register themselves with fractal like the image encoders do. This should provide a single API for calling generating any fractal type
Develop a common framework for any fractal type, that makes adding new fractals easy

###Homepage Links to jump to each fractal type you implement
Each fractals page should have a form to tweak the coefficents for that particular fractal
Form can GET instead of POST to make embedding the images easier
Should provide download links for JPEG and PNG version of the image
This is an exercise in writing Go templates, not testing your Web 2.0 skillz, so if you hit a wall with the HTML, ask, don't fret about it.

Bonus Points

Using pprof what are your three most expensive functions when rendering the fractal
Use multiple go routines to render individual parts of the fractal at the same time
Set the go runtime to use the number the same number of threads as your computer has cores at runtime automatically
Expose an option to limit the iterations of the fractal to speed up rendering at the expense of image quality
Implement an 'X last cool fractals' feature that allows you to 'bookmark' cool parameters and highlight them on the homepage
Provide a 'send via email' feature that sends a link to the currently viewed fractal
Double bonus points if the image is attached to the email instead of just a link
Make your app go get compatible

Modules Used

• http://golang.org/pkg/flag
• http://golang.org/pkg/image
• http://golang.org/pkg/image/jpeg
• http://golang.org/pkg/image/png
• http://golang.org/pkg/net/http
• http://golang.org/pkg/html/template
• http://golang.org/pkg/net/url
• http://golang.org/pkg/testing

Optionally

• http://golang.org/pkg/mime/multipart/
• http://golang.org/pkg/net/http/pprof
• http://golang.org/pkg/net/smtp/
• http://golang.org/pkg/runtime
• http://golang.org/pkg/runtime/pprof

Documentation

Overview

+build !appengine !appenginedev