Two-Phase Commit in Go

Implement the two-phase commit protocol around a replicated key-value store in Go.

To get started:

1. Install Go v1 http://golang.org/doc/install
2. Install Bazaar http://wiki.bazaar.canonical.com/Download (needed for gocheck)
3. git clone git://github.com/ianobermiller/gotwopc.git
4. cd gotwopc
5. go get to install dependencies
6. go test

Some notes:

• Persistent storage uses the filesystem, with the keys just being filenames
• Each replica has a directory under data with two dirs, temp for uncommitted data, and committed for committed data
• Each replica and the master have a log file under logs
• Logs are CSVs, with each entry having the format TransactionId,STATE,OPERATION,Key (some entries don't use all the fields, so they get default values to keep things simple)

TODO:

• Trim the log