Marsel Shayhin, Sergey Bogdanik Innopolis 2019

In the root directory you will find following files:

• dfs_client.py — The Client part of the project, responsible for CLI and reading user commands, passing them to the Networker Interface;
• libclient.py — the Networker Interface, designed as simple network API, able to send and receive data over the network;
• dfs_nameserver.py — the main Name Server script, used to set up the things as socket creation listening, selectors, storage, etc. As soon as it gets a connection from the Client, the Message Interface is created dedicated specifically for this client;
• libserver.py — the Message Interface. It is responsible for handling received commands and reading/writing data to/from the client socket. Interacts with Storage Interface;
• libstorage.py — the Storage Interface. Middle-man between Name Server and Master Interface. Takes the commands, calls storage and maintains state;
• storage.py — the Master Interface. Acts as the orchestrator, interacts with Slave Interfaces;
• slave.py — the Slave Interface. Every slave corresponds to the Slave Node in the remote location and used to communicate with them;
• storage_node.py — the Slave Node code. Can handle reads/writes/deletes.

There are two main ways to launch our system: through vanilla Python and using Docker containers. Below you will find description of both ways.

1. Run storage_node.py on Slave Node servers.
2. Edit libstorage.py's __init__ method and put IP addresses of Slave Nodes.
3. Run dfs_nameserver.py on Name Server.
4. Run dfs_client.py --host=HOST, where HOST is the IP address of the Name Server. You may also provide --port=PORT, which defaults to 2100.
5. Type in some commands.
6. Type q, quit or exit to stop client.

Use the Dockerfiles to deploy.

Node: https://hub.docker.com/repository/docker/srbgd/dfs-node

Nameserver: https://hub.docker.com/repository/docker/srbgd/dfs-nameserver