Distributed Backup System for the Internet

Compilation and testing instructions:

Use javac or intellij, compile the entire src/main/java directory. JRE 1.8.0_231 was used.

Run Peers

For running the Peers as the first or following rings, respectively:

java PeerRunner <IP> <Port>
java PeerRunner <IP> <Port> <KnownIP> <KnownPort>

Where KnownIP/Port is the address of any ring member.

Run Test App

java -jar McastSnooper.jar 224.0.0.0:4445 224.0.0.1:4446 224.0.0.2:4447

Test BACKUP

java TestApp <peerID> BACKUP <FILENAME> <REP_DEGREE>

Test RESTORE

java TestApp <peerID> RESTORE <FILENAME>

Test DELETE

java TestApp <peerID> DELETE <FILENAME>

Test RECLAIM

java TestApp <peerID> RECLAIM <DISK_SPACE>

Test STATE

java TestApp <peerID> STATE

When you run a peer, it will create a peers/ folder. Each peer will have its own folder, which it will use to store the backed up files and documents. The root structure will go as something like this:

peers

• peer0
  • Backup
  • Documents
    • document.pdf
• peer1
  • Backup
  • Documents

When backing up a file, you need to specify the path from the peer's root folder. For instance, to back up peer0's pdf file with a replication degree of 1, you'll need to run java TestApp 0 BACKUP Documents/document.pdf 1

To restore it: java TestApp 0 RESTORE Documents/document.pdf

When retrieving the internal state of a peer, it will be printed to a peer{ID}.log file.