prasadtalasila

var argv = require('minimist')(process.argv.slice(2));
var io = require('socket.io-client');

var submit = function(host, id_no, current_lab, commit_hash, language) {
	var req = [id_no, current_lab , commit_hash, language];
	var socket = io.connect(host);

	socket.emit('submission', req);
	socket.on('invalid', function(data) {
		console.log('Access Denied. Please try submitting again');

prasadtalasila

pythoncallgraph is useful for plotting callgraphs of python code base. The software works by default, but has quirky behavior for some of the options.

To reproduce this tutorial, do the following.
(graphviz already installed)
$pip install pycallgraph
$cat > scrapyTest.py <<EOF

import scrapy

class BlogSpider(scrapy.Spider):

prasadtalasila

Snakefood (http://furius.ca/snakefood/) is a python dependency graph generator. The package performs static call sequence analysis on a set of given python files. We can use it to identify static call graph of the project.

As a sample, install snakefood and then the following instructions generated a decent result.
$git clone 
$cd IRCLogParser/IRCLogParser
$sfood lib/* | sfood-graph | dot -Tpdf -o graph.pdf
sfood lib/* | sfood-graph | dot -Tpng -Gsize=9,15\! -Gdpi=300 -o graph.png

The graph generated is available at: http://pasteboard.co/2ENQSGA5j.png

prasadtalasila

# to be run inside tests/functional_tests/ directory after "npm install" command


const argv = require('minimist')(process.argv.slice(2));
const io = require('socket.io-client');

const submit = function submit(host, idNo, currentLab, commitHash, language) {
  const req = [idNo, currentLab, commitHash, language];
  const socket = io.connect(host);

prasadtalasila

To remove restriction on the length of usernames, remove / comment out the lines 311 - 314 of main_server.js. The lines are shown below.

        if(id_number.length!=12)
        {
          flag=0;
        }
        
        
pending submission block is happening on lines 277-282 of main_server.js

prasadtalasila

1) gitlab installation
	https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-gitlab-on-ubuntu-16-04

	generate SSL certs for gitlab and configure gitlab for https
		self-signed certificates are a problem for runners; to overcome this problem, follow the instructions on
			http://moonlightbox.logdown.com/posts/2016/09/12/gitlab-ci-runner-register-x509-error

			a) specify common name default for SSL certs (instruction different from above URL)
				$vi /etc/ssl/openssl.cnf
				[ v3_ca ]

prasadtalasila

sudo: required
dist: trusty

language: node_js
node_js:
  - "6"

cache:
  apt: true

prasadtalasila

As the complexity increases, architecture dominates materials.

each object should be thought of as having a virtual computer inside.

In networked environment, each object must have a URL and an IP address.

Object solutions need a universal interface language using which an object can interact with another object. HTTP-like REST protocols seem like good candidates for this kind of work. SOAP was actually written for this kind of work, but never took off.
It seems Alan Kay's idea of universal interface language was much broader than HTTP/SOAP.

programming in the large and programming in the small are very very different.

prasadtalasila

From paper
An Early History of Smalltalk, Alan Kay
(Ref: http://www.vpri.org/pdf/hc_smalltalk_history.pdf)

Essential principles
1) Everything is an object
2) Objects communicate by sending and receiving messages (in terms of objects)
3) Objects have their own memory (in terms of objects)

Principles that kept on changing between versions of smalltalk

prasadtalasila

Interasting courses
OS using Rust, Prof David Evans  rust-class.org/


Jude Nelson, student of Prof Larry Peterson
http://www.cs.princeton.edu/~jcnelson/index.html    amazing work