markdalgleish / keanu

Attempt at the Actor Model in javascript

Lol wat

You create modules of rules with no state. You spawn a process (not an actual process yet) that can be sent messages.

// from the bank_account_example in the tests directory

// BankAccount is the module
// receive is BankAccount.receive
//   - type: message -> state -> state
//   - it gets passed the message and the current state
//   - it returns the new state
// [] is the initial (seed) state
let account = spawn(BankAccount, "receive", [])

send(account, ["deposit", 50])  // send account a message of deposit 50
send(account, ["withdraw", 30]) // send account a message of withdraw 30

// pid_of_other_process will be sent ["balance", 20]
send(account, ["check_balance", pid_of_other_process])

Exampls

In Test Directory

• Simple CQRS style bank account

TODO

• Make send async
• Make send concurrent
• Can subscribe to changes in an actors state
• Can unsubscribe from changes in an actors state
• Supervisor layer for persistence
• actor state is an immutable reference type (maybe something like a bitmap hash tries)

License

keanu is Copyright (c) 2015 James Hunter @cccc00 and licensed under the MIT license. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE file for more details.