mini-collaborating-leetcode

About

This project is to build a web app that people can add their coding problems and edit the code on the same page just like google doc.

Click here to see the demo. You can share the problem url with others so that everyone who has the link can editor on the same page.

Progress

A web app with following functions already been added:

• UI components
• Add Problems
• view problem detail.
• create a RESTful API
• communicate with mongoDB hosted on Mlab.
• Use ace editor and socket.io, realize collaborative text editing, show cursors and text changes.
• configure Redis, store session content and delete from memory.
• build python Docker container
• add code execution for API, served with flask,

To-do:

• authorization: only logged users can add problems
• remove problems
• ...

Deployment on AWS

nodejs web app server:

sudo apt-get update
sudo apt-get install git-all
git clone https://github.com/yanyang729/mini-collaborating-leetcode.git
curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -
sudo apt-get install -y nodejs
sudo npm install -g nodemon
wget http://download.redis.io/releases/redis-3.2.6.tar.gz
tar xzf redis-3.2.6.tar.gz
cd redis-3.2.6
sudo apt install make
# install deps for redis
cd deps
make hiredis lua jemalloc linenoise geohash-int
cd ..
sudo make install
cd utils
sudo ./install_server.sh

flask code excutor server:

# setups
wget http://repo.continuum.io/archive/Anaconda3-4.0.0-Linux-x86_64.sh
bash Anaconda3-4.0.0-Linux-x86_64.sh
export PATH=~/anaconda3/bin:$PATH
conda create name oj-executor python=3
sudo apt-get install git-all
git clone https://github.com/yanyang729/mini-collaborating-leetcode.git
source activate oj-executor
cd oj-excutor/
pip install -r requirements.txt 
# add docker groups: https://askubuntu.com/questions/477551/how-can-i-use-docker-without-sudo
sudo groupadd docker
sudo gpasswd -a $USER docker
newgrp docker
python executor_server.py 5000

run server.js in background and exit ssh

npm install pm2 -g
pm2 start app.js

run server.js in background and exit ssh

nohup python3 executor_server.py &

Trouble shotting:

• you need to tell the Flask Dev webserver to run on 0.0.0.0 instead of localhost
• redis need dependencie