Systems Engineering 2 - Assignment 1

Task description

Here I try to develop an online document library. Users are presented with an input form, where they can submit documents (e.g., books, poems, recipes) along with metadata (e.g., author, mime type, ISBN). For the sake of simplicity, they can view all stored documents on a single page.

How to run this project

Go to the project root directory (where docker-compose.yml exists) and run from terminal:

docker-compose up

Go to the browser and put the following URL

http://localhost:8080/

Give some data entry at the landing page, then save it and go to the following URL

http://localhost:8080/library

Nginx

1. nginx/Dockerfile completed and verified. It shows the landing page

HBase

1. HBase is working as it was given

ZooKeeper

1. zookeeper is used to communicate between HBase and servers (grproxy and gserv)

grproxy

1. grproxy can create node to hbase zookeeper and set watch on it.
2. if gserve creates ephemeral child node in ZooKeeper's node then grproxy will get notifications

gserve

1. gserve can create ephemeral child node under grproxy's defined node
2. Two instances gserve1 and gserve2 can run and create child nodes and write their own service_name:port as data which is used by grproxy to select gserve and get their addresses to communicate